Description
TER Paka Series Wind Direction Meter – Industrial Wind Direction Sensor
The TER Paka Series Wind Direction Meter is a robust industrial wind direction sensing solution designed to provide reliable directional measurement for cranes, lifting equipment, industrial machinery, renewable energy installations and environmental monitoring applications. Using a responsive wind vane and industrial electronic output, the Paka wind direction sensor provides information about the direction of the prevailing airflow for integration with compatible displays, PLCs, monitoring systems and data acquisition equipment.
Developed for demanding industrial environments, the Paka wind direction configuration combines compact dimensions with durable materials and an IP65-rated enclosure. The sensor is designed to withstand the environmental conditions commonly encountered in outdoor and exposed industrial installations while providing a practical method of converting wind vane position into an electrical signal that can be interpreted by other equipment.
The Paka WV4403 wind direction sensor is available with either a 4-20 mA analogue output or RS485 Modbus RTU communication, depending on the selected version. These two interface options provide system designers with flexibility when integrating wind direction information into new or existing monitoring architectures.
Wind direction monitoring can be particularly valuable when used alongside wind speed measurement. While an anemometer indicates how fast the wind is moving, a wind direction sensor provides information about the direction from which that airflow is occurring. Together, these measurements can provide operators and monitoring systems with a more complete picture of environmental wind conditions.
Industrial Wind Direction Measurement
Wind direction can influence the way wind interacts with machinery, structures, suspended loads and other exposed equipment. The effect of a particular wind condition may vary according to the orientation of the equipment, geometry of the load and surrounding structures.
The TER Paka Series Wind Direction Meter is designed to convert the physical orientation of its wind vane into a usable electrical output. As airflow changes direction, the vane aligns with the wind and the sensor generates an output corresponding to its angular position.
This information can then be transmitted to compatible industrial equipment for display, monitoring, data recording or appropriately engineered control functions. Depending on the Paka version selected, the direction signal can be supplied as a 4-20 mA analogue output or digitally through an RS485 Modbus RTU interface.
This makes the Paka wind direction sensor suitable for both relatively straightforward standalone monitoring arrangements and more sophisticated industrial automation systems.
Paka WV4403 Wind Direction Sensor
The wind direction configuration within the Paka family is identified as the WV4403. Unlike the cup-style Paka anemometers used primarily for wind speed measurement, the WV4403 uses a wind vane to determine direction.
The vane rotates around the vertical axis of the sensor as the direction of airflow changes. This mechanical movement is converted into an electrical value representing the angular position of the wind vane.
The resulting measurement can be interpreted according to conventional compass directions. North corresponds to 0 degrees, East to 90 degrees, South to 180 degrees and West to 270 degrees, with intermediate directional positions represented between these principal points.
This provides an intuitive method of representing wind direction while also making the measurement suitable for electronic processing and industrial system integration.
4-20 mA Analogue Wind Direction Output
The analogue version of the Paka WV4403 provides a 4-20 mA output corresponding to wind direction. The current signal changes according to the angular position of the vane, enabling compatible industrial instrumentation to interpret the measured direction.
At North, corresponding to 0 degrees, the analogue output is 4 mA. East at 90 degrees corresponds to 8 mA, South at 180 degrees corresponds to 12 mA and West at 270 degrees corresponds to 16 mA.
Intermediate compass directions are represented by corresponding intermediate current values. For example, Northeast at 45 degrees corresponds to 6 mA, Southeast at 135 degrees corresponds to 10 mA, Southwest at 225 degrees corresponds to 14 mA and Northwest at 315 degrees corresponds to 18 mA.
The resulting analogue signal provides a practical interface for compatible displays, PLC analogue inputs, data acquisition systems and other industrial instrumentation capable of interpreting a 4-20 mA measurement.
Detailed Directional Measurement
The Paka WV4403 provides directional output across the complete rotation of the wind vane. TER’s published output table identifies the relationship between compass direction, vane angle and output signal.
North is represented by 0 degrees, with intermediate points progressing around the compass through North-Northeast at 22.5 degrees, Northeast at 45 degrees, East-Northeast at 67.5 degrees and East at 90 degrees.
The sequence continues through Southeast at 135 degrees, South at 180 degrees, Southwest at 225 degrees, West at 270 degrees and Northwest at 315 degrees before returning toward North.
This provides the monitoring system with substantially more useful information than a simple indication of whether the wind is coming from one broad quadrant. Directional data can instead be interpreted according to the angular position of the vane.
RS485 Modbus RTU Wind Direction Version
For applications requiring digital communication, the Paka WV4403 is also available with an RS485 Modbus RTU interface. This version communicates the measured wind direction digitally, allowing integration with compatible PLCs, industrial controllers and supervisory monitoring equipment.
Modbus RTU is widely used throughout industrial automation and instrumentation, making the RS485 version particularly useful where the wind direction sensor needs to form part of a larger digital monitoring network.
The wind direction value is made available in degrees through the Modbus registers. This allows a compatible master device to read the directional measurement directly rather than converting an analogue current signal into an angular value.
TER specifies that the analogue and RS485 outputs are separate product configurations. Both output types are not provided simultaneously within the same WV4403 unit, making it important to select the appropriate version when specifying the wind monitoring system.
Wind Direction in Degrees and Compass Points
Representing wind direction in degrees provides a precise and universally understood measurement format. The complete circle is divided into 360 degrees, beginning with North at 0 degrees and progressing clockwise through East, South and West.
This format can be converted by compatible monitoring equipment into conventional compass directions where required. For operators, cardinal and intercardinal descriptions such as North, Northeast, East, Southeast, South, Southwest, West and Northwest can provide an immediately understandable indication.
For automation and data acquisition equipment, the numerical angle provides a convenient value for recording, comparison and processing.
The combination of physical wind vane measurement and electronic output therefore allows the Paka sensor to serve both human monitoring requirements and automated industrial systems.
Wind Direction Measurement at Very Low Wind Speeds
As with mechanical wind vanes generally, sufficient airflow is required to establish a stable direction. TER notes that when wind speed is below approximately 3 km/h, the measured wind angle may be uncertain.
This is an important characteristic to understand when interpreting wind direction information. Under extremely light or effectively static wind conditions, there may not be enough aerodynamic force to maintain the vane in a stable directional position.
Once sufficient airflow is present, the vane responds to the direction of the wind and provides the corresponding electrical output.
Understanding this behaviour helps ensure that operators and system designers interpret the wind direction measurement correctly, particularly where data is being recorded automatically.
Correct North Orientation
Correct physical orientation of the wind direction sensor is fundamental to obtaining meaningful directional measurements. The Paka WV4403 must be installed with its North reference aligned correctly with geographical or site-defined North according to the manufacturer’s installation instructions.
The sensor includes a reference on the base that assists with this orientation. During installation, the vane and base reference are aligned toward North so that the electrical output corresponds correctly with the published angular and compass-direction relationship.
If the sensor is physically installed with an incorrect orientation, the resulting direction values will contain a corresponding offset. Correct alignment should therefore be verified as part of installation and commissioning.
This is especially important where the output is being transmitted to a PLC, display or data logging system because the downstream equipment will interpret the signal according to the sensor’s established North reference.
Wind Speed and Wind Direction Monitoring Together
Wind direction information becomes particularly useful when combined with wind speed measurement. A wind speed anemometer determines the velocity of the airflow, while the Paka wind direction sensor determines its direction.
Together, these two measurements can provide a more complete description of environmental wind conditions around cranes, lifting machinery and exposed industrial equipment.
For example, the same measured wind speed may interact differently with an exposed structure or load depending on whether the airflow is approaching from the front, side or another angle. Wind direction information provides additional context that cannot be obtained from wind speed alone.
A complete TER wind monitoring installation can therefore incorporate suitable wind speed sensing, wind direction measurement and a compatible display or industrial control interface according to the requirements of the application.
Integration with TER Wind Displays
The Paka wind direction sensor can form part of a wider TER wind monitoring solution incorporating compatible indication and monitoring equipment. This is particularly relevant to applications requiring wind information to be presented clearly to operators.
Systems can be configured around appropriate sensor outputs and display inputs so that measured wind conditions are available at a convenient operator location. Depending on the overall system configuration, wind information may also be used for alarm indication, historical data recording or transmission to other industrial equipment.
The correct combination of sensor, output type and display should be selected according to the requirements of the installation.
4-20 mA for Industrial Automation
The 4-20 mA version is particularly well suited to conventional industrial instrumentation systems. Current-loop signalling is widely used for transmitting process measurements between field devices and control equipment.
When connected to a compatible PLC analogue input, the Paka WV4403 output can be scaled so that the measured current corresponds to the appropriate wind direction. The control system can then display, record or process that information according to the requirements of the application.
The analogue signal can also be used with compatible panel meters, industrial displays and data acquisition equipment.
Correct scaling is important because the current represents an angular position rather than a conventional linear process measurement such as pressure or temperature. System programming should therefore reflect TER’s specified relationship between wind direction and analogue output.
RS485 Modbus for Digital Monitoring Networks
The RS485 Modbus RTU version provides an alternative for installations based around digital industrial communication. RS485 is particularly suitable for industrial environments and allows compatible field equipment to communicate over a serial network.
The Paka WV4403 provides the measured wind direction in degrees through its Modbus registers. This enables compatible equipment to request and process the measurement digitally.
TER specifies Modbus RTU communication at 19200 baud with even parity, one start bit, eight data bits and one stop bit. The WV4403 has a configurable slave address, allowing the device to be incorporated into an appropriately designed Modbus network.
This can be particularly valuable for larger industrial installations where wind information needs to be integrated with existing automation or supervisory systems.
IP65 Environmental Protection
Wind direction sensors are commonly installed outdoors or in exposed industrial locations, making environmental protection an important consideration. The Paka WV4403 features IP65 protection for use in demanding applications.
The IP65 classification provides protection against dust ingress and water jets under the applicable test conditions. This helps protect the internal sensing and electronic components from environmental contamination encountered during normal industrial use.
As with any IP-rated device, the performance of the complete installation also depends on correct mounting, cable entry and electrical installation practices. Installation should follow the manufacturer’s instructions to maintain the intended degree of environmental protection.
Designed for Demanding Industrial Environments
The Paka Series has been developed around the requirements of industrial wind monitoring rather than general consumer weather measurement. TER describes the range as simple, reliable and robust, with compact dimensions and aerodynamic construction suited to demanding applications.
The wind direction sensor incorporates aluminium and high-quality technical plastic components together with corrosion and UV-resistant construction. The design is intended to provide dependable operation in exposed installations while maintaining a compact overall form.
These characteristics make the Paka wind direction sensor particularly relevant to industrial equipment where a conventional domestic weather vane would not provide an appropriate level of mechanical or environmental protection.
Operating Temperature for Industrial Applications
The Paka WV4403 is specified for operation across a broad industrial temperature range. The wind direction version can operate from -20°C to +60°C under ice-free conditions, with a specified storage temperature range extending from -35°C to +80°C.
This enables the sensor to be considered for a variety of outdoor and industrial environments subject to significant seasonal temperature changes.
The reference to ice-free operation is important. Ice accumulation can physically restrict the movement of a wind vane and prevent accurate measurement, regardless of the electrical capabilities of the sensor.
Environmental conditions at the intended installation should therefore be considered when selecting and positioning the wind direction sensor.
Compact Wind Direction Sensor Design
The compact construction of the Paka WV4403 makes it suitable for installation on machinery, structures and monitoring masts where available space may be limited. Its aerodynamic vane responds to changes in airflow direction while the sensor base provides the mechanical and electrical interface required for industrial installation.
An optional stainless-steel mounting bracket can simplify installation and anchoring of the sensor. The lower section also incorporates provision to facilitate cable entry for wired configurations.
Correct mounting should provide a secure installation while allowing the vane to rotate freely and remain exposed to representative airflow.
A Flexible Industrial Wind Direction Solution
The TER Paka Series Wind Direction Meter provides a practical solution for applications requiring reliable directional information in an industrial environment. Its dedicated wind vane converts airflow direction into an electrical value that can be transmitted to compatible displays, PLCs and monitoring equipment.
The availability of 4-20 mA analogue and RS485 Modbus RTU configurations allows the system designer to choose between established analogue instrumentation and digital industrial communication.
Combined with IP65 environmental protection, durable construction, broad operating temperature capability and compatibility with industrial monitoring systems, the Paka WV4403 provides a strong foundation for wind direction measurement on cranes, lifting equipment, industrial machinery and environmental monitoring installations.
Electrical Integration of the Paka Wind Direction Meter
The TER Paka Series Wind Direction Meter is designed to provide straightforward integration with industrial monitoring, automation and display equipment. Depending on the selected WV4403 version, wind direction information is transmitted using either a 4-20 mA analogue signal or RS485 Modbus RTU digital communication.
These two interface options allow the Paka wind direction sensor to be incorporated into a wide variety of systems. A 4-20 mA version can be connected to compatible analogue instrumentation, PLC inputs and displays, while the RS485 version is suitable for digital networks based on the widely used Modbus RTU protocol.
Selection between the two versions should be made during system design. The analogue and RS485 outputs are separate configurations rather than simultaneous outputs from the same sensor. The required interface should therefore be established according to the equipment that will receive and process the wind direction information.
Understanding the 4-20 mA Direction Signal
In the analogue WV4403 configuration, the position of the wind vane is converted into a current signal. Unlike a wind speed transmitter where increasing current normally represents increasing velocity, the WV4403 uses the current value to represent angular position around the compass.
TER establishes a direct relationship between vane angle and output current. North at 0 degrees corresponds to 4 mA, East at 90 degrees corresponds to 8 mA, South at 180 degrees corresponds to 12 mA and West at 270 degrees corresponds to 16 mA.
Intermediate angles produce corresponding intermediate current values. This provides a continuous electrical representation of the vane position that can be interpreted by compatible industrial equipment.
The result is a simple method of transmitting directional information using the same established 4-20 mA signalling technology commonly found throughout industrial automation and instrumentation.
4-20 mA Compass Direction Mapping
The relationship between compass direction, angular position and analogue output allows the receiving equipment to convert the measured current into a meaningful directional value.
North at 0 degrees corresponds to approximately 4 mA. North-Northeast at 22.5 degrees corresponds to approximately 5 mA, Northeast at 45 degrees to 6 mA and East-Northeast at 67.5 degrees to 7 mA.
East at 90 degrees corresponds to 8 mA, East-Southeast at 112.5 degrees to approximately 9 mA, Southeast at 135 degrees to 10 mA and South-Southeast at 157.5 degrees to approximately 11 mA.
South at 180 degrees corresponds to 12 mA. South-Southwest at 202.5 degrees corresponds to approximately 13 mA, Southwest at 225 degrees to 14 mA and West-Southwest at 247.5 degrees to approximately 15 mA.
West at 270 degrees corresponds to 16 mA. West-Northwest at 292.5 degrees corresponds to approximately 17 mA, Northwest at 315 degrees to 18 mA and North-Northwest at 337.5 degrees to approximately 19 mA.
As the vane approaches the North position again, the output approaches the upper end of the current range before transitioning back to the North reference. The receiving system should therefore be configured specifically for circular directional measurement rather than treating wind direction as an ordinary linear process variable.
Scaling the Paka Sensor in a PLC
The 4-20 mA output makes the Paka wind direction sensor suitable for integration with compatible PLC analogue inputs. Correct scaling allows the PLC to convert the measured current into an angular value or compass direction.
The PLC program can then use the resulting value for operator indication, data logging or other appropriately engineered monitoring functions. For example, an HMI may present the numerical angle alongside a compass-style directional indication.
Because wind direction wraps around at North, system programming should account for the transition between the upper end of the measurement range and 0 degrees. This is different from a conventional linear measurement where the minimum and maximum values represent two completely separate endpoints.
Programming and electrical integration should be carried out by suitably qualified personnel using the TER documentation for the exact sensor version being installed.
Benefits of 4-20 mA in Industrial Applications
The 4-20 mA current loop is widely used throughout industrial instrumentation because it provides a practical and familiar interface between field sensors and monitoring equipment.
For wind direction measurement, this allows the Paka WV4403 to be incorporated into systems that already use analogue input modules for pressure, temperature, position and other process measurements.
This can simplify integration into existing PLC architectures because system designers can use established industrial instrumentation practices rather than introducing a separate proprietary communications interface.
The actual cable length, wiring method, electrical protection and receiving equipment requirements should be assessed for the installation according to the manufacturer’s specifications and applicable electrical requirements.
RS485 Modbus RTU Version
Where digital communication is preferred, the Paka WV4403 is available with an RS485 Modbus RTU interface. This configuration allows compatible industrial controllers and monitoring systems to read the measured wind direction digitally.
Modbus RTU is a widely adopted industrial communications protocol commonly used with PLCs, instrumentation, remote I/O and supervisory systems. Its widespread adoption makes the digital Paka version particularly suitable for industrial installations where wind direction needs to become part of an existing automation network.
Rather than measuring an analogue current and scaling that signal into degrees, the receiving Modbus master can retrieve wind direction information through the appropriate device registers.
This can simplify data integration in applications already using Modbus communications and can allow additional device information to be exchanged according to the capabilities defined in the manufacturer’s protocol documentation.
RS485 Communication Parameters
TER specifies Modbus RTU communication for the digital Paka wind direction sensor. Published communication settings include a transmission speed of 19200 baud, even parity, one start bit, eight data bits and one stop bit.
The device operates as a Modbus slave and communicates with a compatible master such as a PLC, industrial computer, data logger or supervisory controller.
The slave address can be configured so that the Paka sensor can be identified correctly on the communication network. Correct addressing is particularly important where multiple Modbus devices share the same RS485 bus.
Network design should follow appropriate RS485 practices, including consideration of topology, termination, cable type, shielding and electrical environment.
Reading Wind Direction Through Modbus
In the RS485 configuration, wind direction information is available digitally in degrees. The receiving system can read the relevant Modbus register and use the returned value for display, recording or processing.
This digital representation can be particularly convenient where the final system already works with numerical engineering values. A PLC or supervisory system can use the directional value directly rather than first converting an analogue signal.
The information may then be presented on an HMI as a numerical degree value, translated into cardinal and intercardinal directions or incorporated into a graphical wind indication.
When implementing the communication interface, the register definitions and scaling specified in the current TER technical documentation should be followed.
Power Supply Requirements
Correct electrical supply is essential for dependable operation of the Paka wind direction sensor. The required supply range differs according to the selected output configuration.
The analogue 4-20 mA WV4403 version is designed for a 12-30 Vdc power supply. This range is compatible with many common industrial DC control systems, including installations based around nominal 24 Vdc supplies.
The RS485 Modbus version provides a broader specified supply range of 9-30 Vdc. This also makes it well suited to typical industrial low-voltage DC systems.
The actual power supply should provide suitable voltage regulation and capacity for the complete installation. Wiring should also be appropriately protected and installed according to applicable requirements.
Integrating Wind Speed and Wind Direction Sensors
A complete wind monitoring system will often measure both wind speed and direction. TER’s Paka range allows appropriate sensors to be selected for these separate measurements and integrated into the broader monitoring system.
The wind speed sensor determines airflow velocity, while the WV4403 wind vane determines the direction of that airflow. Together, the measurements provide a more complete representation of the wind conditions affecting the machinery or site.
This can be particularly useful for cranes, lifting equipment and exposed industrial structures where both the strength and direction of the wind may be relevant to operational assessment.
System architecture should be designed around the required sensor outputs and receiving equipment. Depending on the application, measurements may be displayed locally, transmitted to a PLC, recorded by a data acquisition system or incorporated into a compatible TER wind display arrangement.
Integration with the TER WM44 Wind Display
The Paka wind direction sensor can be considered as part of a TER wind monitoring system incorporating compatible WM44 display equipment. The correct combination depends on the input and output technologies selected for the installation.
A dedicated display can provide personnel with clear local access to measured wind information, allowing wind speed and direction to be viewed without requiring direct access to a PLC or supervisory system.
Depending on the selected display configuration, the wider monitoring system may also provide alarm outputs, analogue signalling and data logging functions.
The WM44 family therefore provides a useful interface where Paka sensing equipment needs to form part of an operator-focused wind monitoring solution.
Importance of Correct Sensor Orientation
Correct orientation is one of the most important aspects of installing a wind direction sensor. The electrical output can only represent a meaningful compass direction if the sensor’s mechanical North reference has been aligned correctly during installation.
The Paka WV4403 includes a North reference on the sensor base. During installation, this reference should be aligned according to the manufacturer’s instructions.
An orientation error will produce a corresponding error throughout the entire directional measurement range. For example, if the sensor base is installed with a significant rotational offset, every displayed wind direction will contain approximately the same offset.
Alignment should therefore be verified carefully during installation and again during commissioning.
Selecting the Sensor Mounting Position
The location of the wind direction sensor can significantly influence the quality and relevance of the measurement. Nearby structures can alter airflow, creating turbulence, shielding or localised changes in direction.
The sensor should be installed in a position where the vane can rotate freely and where the measured airflow is representative of the conditions relevant to the machinery or site.
Large structural members, walls, buildings, machinery and other obstructions should be considered when selecting the mounting position. On cranes, the crane structure itself can influence airflow depending on where the sensor is installed.
The objective is to obtain a useful measurement of the wind conditions affecting the application rather than simply selecting the easiest physical mounting point.
Mounting on Cranes and Lifting Equipment
Crane installations can present unique challenges for wind sensor mounting. The sensor may need to be installed at an elevated position where it is exposed to representative airflow while remaining mechanically protected from crane movement and other equipment.
The mounting arrangement should provide sufficient rigidity to maintain the sensor’s orientation. Movement of the mounting bracket itself could introduce errors into the directional reference.
The vane must also have unrestricted rotational movement. Cables, structural components and other equipment should not interfere with its travel.
For moving crane systems, cable routing should account for machinery movement and should provide appropriate mechanical protection. Where wind information is incorporated into crane controls or alarms, the complete system should be designed according to the requirements of the crane and application.
Optional Stainless-Steel Mounting Bracket
TER provides an optional stainless-steel mounting bracket for the Paka sensor. This accessory can assist with securing the device to an appropriate support structure while maintaining a stable installation.
Stainless steel is particularly suitable for exposed industrial mounting hardware because of its corrosion resistance and mechanical durability.
The bracket arrangement should be installed so that the sensor remains correctly oriented and the vane is unobstructed. Fasteners and supporting structures should also be appropriate for the environmental and mechanical conditions of the installation.
Commissioning the Wind Direction Sensor
After installation, commissioning should confirm that the mechanical orientation, electrical connections and displayed or transmitted values are correct.
The North reference should be checked first. The sensor output can then be observed while the vane is positioned through known directions to confirm that the receiving equipment interprets the measurement correctly.
For an analogue system, this can include confirming that the measured current corresponds to the expected direction values. For an RS485 system, communication parameters, device address and register interpretation should be checked.
If the sensor is connected to a display, PLC or HMI, the final operator indication should also be checked to confirm that compass directions and numerical values correspond correctly with the physical vane position.
Accounting for Low Wind Conditions
TER notes that wind direction measurements may become uncertain when wind speed falls below approximately 3 km/h. This behaviour results from the physical operating principle of the wind vane.
At very low air velocities there may not be sufficient aerodynamic force to establish and maintain a stable vane position. Small local air movements or mechanical effects can therefore influence the indicated direction.
Monitoring software and operators should take this characteristic into account when interpreting direction information during calm conditions.
Where both wind speed and direction are available to the monitoring system, software can potentially use the measured wind speed to provide context for the directional value.
Environmental Installation Considerations
The Paka WV4403 is designed for industrial outdoor use and provides IP65 environmental protection. Nevertheless, the installation environment should be considered carefully.
The sensor is specified for operation from -20°C to +60°C under ice-free conditions. Ice formation can restrict the movement of the vane and prevent correct directional measurement even if the electronic components remain within their specified temperature range.
Heavy contamination or physical obstruction can similarly affect vane movement. The installation should therefore allow inspection and maintenance where environmental conditions make accumulation of dirt or other material possible.
Cable Routing and Protection
Wired Paka installations require appropriate routing and protection of the sensor cable. Industrial sites can expose wiring to vibration, abrasion, moisture and mechanical damage, particularly when the sensor is installed on machinery.
Cables should be supported appropriately and protected from sharp edges, moving components and other potential sources of damage. Cable entry into enclosures and junction points should preserve the required environmental protection.
For RS485 installations, cable selection and routing should also consider communication integrity. Industrial electrical environments can contain motors, drives and other equipment capable of generating electromagnetic interference.
Appropriate industrial wiring practices can help maintain dependable sensor communication and measurement performance.
Analogue or Modbus – Selecting the Right Paka Version
Choosing between the 4-20 mA and RS485 Modbus versions depends primarily on the architecture of the monitoring system.
The 4-20 mA version is a strong choice for systems using conventional analogue instrumentation, standalone displays or PLC analogue input modules. It provides a straightforward current signal representing the wind vane position.
The RS485 Modbus version is particularly attractive for digital automation systems where multiple devices communicate with a central controller. Wind direction can be read digitally in degrees and incorporated directly into PLC, SCADA or data acquisition systems.
Neither interface is universally superior. The most appropriate choice depends on cable infrastructure, receiving equipment, system complexity and integration requirements.
Reliable Integration for Industrial Wind Monitoring
The TER Paka Series Wind Direction Meter provides system designers with two established methods of integrating wind direction information into industrial equipment. The 4-20 mA version provides compatibility with traditional analogue instrumentation, while the RS485 Modbus RTU version supports digital industrial communication.
Combined with correct sensor positioning, North alignment and system configuration, these interfaces allow the WV4403 to provide useful directional information to operators and automation systems.
Whether installed on a crane, lifting system, industrial structure or environmental monitoring station, the Paka wind direction sensor can form an important part of a complete wind monitoring solution when paired with appropriate wind speed sensing, display and data acquisition equipment.
Industrial Applications for the TER Paka Wind Direction Meter
The TER Paka Series Wind Direction Meter is designed for industrial applications where accurate information about airflow direction can contribute to equipment monitoring, operational decision-making and environmental awareness. Its robust construction, IP65 protection and choice of 4-20 mA analogue or RS485 Modbus RTU output make the Paka WV4403 suitable for integration across a diverse range of industrial installations.
TER identifies applications for the broader Paka range including overhead travelling cranes, gantry cranes, tower cranes, harbour cranes, loading and unloading docks, wind turbines, photovoltaic systems and hangars. These applications can involve equipment that is exposed to changing wind conditions and where reliable environmental information is useful to operators or monitoring systems.
The Paka wind direction sensor can be used independently where directional information alone is required or combined with an appropriate wind speed sensor to create a more comprehensive wind monitoring solution.
Overhead Travelling Crane Applications
Overhead travelling cranes used in exposed or partially open industrial environments can encounter changing wind conditions. This may be particularly relevant for outdoor crane installations, large manufacturing facilities with open access areas and other locations where airflow can affect equipment or loads.
The Paka WV4403 provides directional information that can complement wind speed measurement. When both parameters are available, operators or monitoring systems can obtain a clearer picture of the wind conditions affecting the crane.
Depending on the system architecture, directional information can be transmitted to a compatible display, PLC, data acquisition system or other industrial monitoring equipment. The 4-20 mA and RS485 Modbus RTU versions allow the sensor interface to be selected according to the existing control infrastructure.
Any wind-related crane operating limits should be established from the crane manufacturer’s instructions, engineering requirements and site-specific procedures. The Paka sensor provides measurement information rather than independently determining whether a lifting operation is safe.
Gantry Crane Wind Monitoring
Gantry cranes frequently operate outdoors in industrial yards, manufacturing facilities, storage areas, ports and material handling environments. Their exposed structures and large operating areas make wind monitoring particularly relevant in many applications.
A Paka wind direction sensor can be positioned at an appropriate location on the crane or associated structure to provide directional measurement. When combined with wind speed sensing, the resulting system can provide information about both the velocity and direction of the airflow.
Correct positioning is important because structural members can affect local airflow. The wind vane should be installed where it can rotate freely and where the measured conditions are representative of the wind relevant to the equipment.
Tower Crane Applications
Tower cranes operate at elevated heights where wind conditions may differ substantially from those experienced at ground level. Wind direction information can provide additional context alongside the wind speed measurement available to the crane operator or site monitoring system.
The Paka WV4403 can provide an industrial wind direction measurement using either its 4-20 mA analogue configuration or RS485 Modbus RTU version. This enables integration with a range of monitoring architectures according to the crane and site requirements.
Sensor mounting should take account of the crane structure, potential airflow disturbance, cable routing and the need to maintain correct North orientation. Where the sensor is installed at an elevated or difficult-to-access location, the mounting arrangement should also allow appropriate inspection and maintenance.
Harbour Cranes and Port Applications
Ports and terminals can be highly exposed environments where wind conditions change considerably throughout the working day. Harbour cranes and other large material handling equipment may therefore benefit from continuous measurement of environmental conditions.
The Paka wind direction sensor provides a compact industrial solution for incorporating directional measurement into port equipment or site monitoring systems. Its IP65 protection and industrial construction are well suited to exposed applications within the limitations specified by TER.
When integrated with appropriate wind speed measurement, the Paka system can provide operators with both the strength and direction of the measured wind. This information may be displayed locally or incorporated into a central monitoring system.
Loading and Unloading Areas
TER also identifies loading and unloading docks among the applications for the Paka range. These areas may involve cranes, lifting equipment, large doors, exposed structures and material handling operations where environmental conditions can influence normal activities.
A wind direction sensor can provide additional information about changing airflow around these areas, particularly where wind speed monitoring is already being used.
The compact construction of the Paka WV4403 allows it to be mounted on an appropriate structure while its industrial output options make integration with existing instrumentation practical.
Wind Turbine Applications
Wind direction is naturally an important environmental measurement in wind energy applications. TER identifies wind turbines among the potential applications for the Paka series.
The WV4403 wind vane provides a directional signal that can be transmitted to suitable monitoring or data acquisition equipment. The RS485 Modbus version can be particularly useful where digital environmental information needs to be incorporated into a broader industrial communication network.
Application suitability should be assessed according to the specific installation, environmental requirements and required measurement performance.
Photovoltaic and Solar Installations
Photovoltaic installations can cover large exposed areas and may incorporate environmental monitoring equipment for operational or engineering purposes. TER includes photovoltaic systems among the applications for the Paka range.
The Paka wind direction sensor can form part of an environmental monitoring station alongside wind speed sensing and other instrumentation. The resulting information can be recorded or communicated to compatible site monitoring equipment.
The choice between 4-20 mA and RS485 Modbus RTU provides flexibility when integrating the sensor into either conventional analogue instrumentation or a digital monitoring architecture.
Hangars and Large Industrial Buildings
Hangars and large industrial buildings can experience significant airflow around large openings, doors and exposed external areas. TER identifies hangars as another potential application for Paka wind monitoring equipment.
Wind direction information can provide facility operators with additional environmental data where changing wind conditions are relevant to site operations.
The sensor can be mounted externally in a suitable location and connected to compatible monitoring equipment inside the facility, allowing personnel to view or record wind direction information remotely.
Combining Wind Speed and Direction Measurement
One of the strongest applications for the Paka WV4403 is as part of a complete wind monitoring system that also measures wind speed. The two measurements provide complementary information.
Wind speed indicates the velocity of the airflow, while wind direction indicates where that airflow is coming from. Together, they provide a substantially more complete description of the conditions affecting machinery, structures and exposed loads.
This combined information can be particularly useful where the orientation of equipment or loads changes during operation. A particular wind speed may interact differently with a structure depending on the direction of the airflow.
Where both measurements are required, appropriate TER sensors and compatible display or monitoring equipment can be selected to create an integrated system.
Integration with the TER WM44-EV011 V3 Wind Display
The Paka wind direction sensor can form part of a broader TER wind monitoring solution incorporating compatible WM44 display equipment. This provides an opportunity to bring wind information together in a clear operator interface.
The TER WM44 family provides wind monitoring capabilities including graphical indication, alarm functionality, analogue signalling and, on appropriate versions, data logging. A correctly configured wind monitoring system can therefore combine field sensing with local operator information and external system integration.
Compatibility should always be checked between the selected Paka output version and the specific display or monitoring equipment used in the installation.
Choosing Between 4-20 mA and RS485 Modbus RTU
Selection of the correct WV4403 configuration depends largely on the architecture of the wind monitoring system.
The 4-20 mA version is well suited to installations based on conventional industrial analogue instrumentation. It can interface with compatible PLC analogue inputs, panel instrumentation and data acquisition equipment capable of scaling the current signal into a directional value.
The RS485 Modbus RTU version is suited to digital industrial networks where measurement information is communicated directly between field devices and a central controller. This can reduce the need for individual analogue input channels and enables the wind direction value to be read digitally.
The correct choice will depend on the receiving equipment, cable infrastructure, network architecture and requirements of the application.
Considerations When Selecting a Wind Direction Sensor
Several factors should be considered when specifying the Paka wind direction sensor. These include the required output type, available power supply, receiving equipment, installation environment, sensor mounting location, cable distance and whether wind speed measurement will also be incorporated.
The analogue WV4403 requires a 12-30 Vdc supply, while the RS485 Modbus configuration operates from 9-30 Vdc. The available industrial DC supply should therefore be confirmed during system design.
Environmental conditions should also be considered. The Paka wind direction sensor is specified for operation from -20°C to +60°C under ice-free conditions and provides IP65 environmental protection.
Correct North Alignment During Installation
Accurate wind direction measurement depends on correct orientation of the sensor. The North reference on the Paka WV4403 base should be aligned according to TER’s installation instructions.
This establishes the mechanical reference used by the electrical output. If the base is incorrectly aligned, every measured direction will contain a corresponding rotational error.
North alignment should therefore be checked carefully during commissioning. Where the output is connected to a PLC, display or data logger, the physical vane position should also be compared with the reported direction to confirm correct system scaling.
Inspection and Maintenance
Periodic inspection can help maintain dependable operation of the wind direction measurement system. The sensor should be checked for physical damage, contamination and anything that could restrict free movement of the vane.
The mounting arrangement should remain secure so that the North reference does not shift over time. A change in the orientation of the complete sensor assembly could introduce a systematic error even if the sensor itself continues to operate correctly.
Wiring and cable entries should also be inspected where appropriate, particularly in installations exposed to weather, vibration or machinery movement.
Maintaining Free Movement of the Wind Vane
The Paka WV4403 relies on mechanical movement of the vane to determine wind direction. Maintaining unrestricted rotation is therefore fundamental to measurement performance.
Accumulated contamination, physical obstruction or ice can interfere with vane movement. TER specifies operation under ice-free conditions, and installations where icing is possible should take this limitation into account.
Routine inspection intervals should reflect the actual operating environment. A sensor installed in a clean environment may require different maintenance attention from one exposed to heavy industrial contamination.
Understanding Wind Direction at Low Air Speeds
TER notes that directional measurement may become uncertain when wind speed is below approximately 3 km/h. At very low wind speeds, there may not be sufficient aerodynamic force to hold the vane in a stable position.
This should be considered when interpreting recorded or displayed wind direction values during calm conditions. A changing direction indication when there is almost no measurable wind does not necessarily represent significant changes in the prevailing airflow.
Where wind speed and direction are monitored together, the wind speed value provides useful context for determining how much significance should be placed on the corresponding directional reading.
Benefits of the Paka WV4403 Wind Direction Sensor
The Paka WV4403 combines a straightforward wind vane measurement principle with industrial electronic interfaces and robust construction.
The availability of both 4-20 mA analogue and RS485 Modbus RTU configurations makes the product adaptable to different industrial architectures. Existing analogue systems can use the established current-loop interface, while modern digital installations can select Modbus communication.
IP65 environmental protection, compact construction and an operating temperature range suitable for many industrial environments further support installation on exposed machinery and structures.
When combined with suitable wind speed sensing, the WV4403 can form part of a comprehensive system that provides operators and automation equipment with a clearer understanding of changing wind conditions.
Why Choose TER Paka Wind Monitoring Equipment?
TER develops industrial control and monitoring equipment for lifting, material handling and machinery applications. The Paka range reflects this industrial focus by providing wind sensing equipment designed around the requirements of cranes and other demanding installations.
Rather than relying on general-purpose weather instrumentation, users can select a wind direction sensor designed for integration with industrial electrical and automation systems.
The choice of 4-20 mA and RS485 Modbus RTU outputs also allows the Paka sensor to integrate with a wide variety of established industrial equipment.
TER Paka Wind Direction Meter from Control Devices
Control Devices supplies TER wind monitoring products for Australian crane, lifting, material handling and industrial applications. The Paka Series Wind Direction Meter provides a robust option for customers requiring directional wind measurement as part of a standalone or integrated monitoring system.
Control Devices can assist with product selection when determining whether the 4-20 mA or RS485 Modbus RTU version is most appropriate for the intended application. Assistance can also be provided when selecting compatible TER wind speed sensors and display equipment for a complete wind monitoring solution.
When enquiring about the Paka WV4403, useful application information includes the type of machinery or installation, required output signal, available DC supply, receiving equipment, proposed sensor mounting position, cable requirements and whether wind speed measurement is also required.
TER Paka Series Wind Direction Meter – Reliable Industrial Wind Monitoring
The TER Paka Series Wind Direction Meter provides a practical and robust solution for measuring airflow direction in demanding industrial applications. Using a responsive wind vane and industrial electronic interface, the WV4403 converts physical wind direction into a signal that can be displayed, recorded or processed by compatible equipment.
The 4-20 mA version provides straightforward integration with conventional industrial instrumentation, with the current signal corresponding to the angular position of the vane. The RS485 Modbus RTU version provides digital wind direction information in degrees for integration with compatible industrial communication networks.
With IP65 environmental protection, durable industrial construction, compact dimensions and a broad operating temperature range under ice-free conditions, the Paka WV4403 is suitable for a diverse range of exposed industrial installations.
Applications can include overhead travelling cranes, gantry cranes, tower cranes, harbour cranes, loading and unloading areas, wind turbines, photovoltaic installations, hangars and other industrial systems requiring reliable wind direction information.
When combined with appropriate wind speed sensing and compatible TER monitoring equipment, the Paka wind direction sensor can form part of a comprehensive system providing operators and industrial control equipment with valuable information about changing environmental conditions.
Contact Control Devices for further information, technical assistance and product selection support for the TER Paka Series Wind Direction Meter, Paka wind speed sensors and compatible TER wind monitoring equipment.
