P138 Linear Position Sensor

P138  is an affordable, durable, accurate position sensor designed for a wide range of industrial applications. It is particularly suitable for OEMs seeking good sensor performance in situations where a small diameter, short-bodied sensor is needed and cost is important. The unit is compact and space-efficient, being responsive along almost its entire length, and like all Positek® sensors provides a linear output proportional to displacement.

Each unit is supplied with the output calibrated to the travel required by the customer, from 0-51mm to 0-100mm and with full EMC protection built in.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor has a compact 19 mm diameter stainless steel body, is easy to install and set up. Mounting options include body clamps or a stainless steel mounting flange with two 3.2 mm by 30 degree wide slots on a 25 mm pitch. The stainless steel plunger can be supplied free or captive, with female M4 thread, or spring-loaded with a ball end. The P138 also offers a range of mechanical options, environmental sealing is to IP67.

 

Description

Positek P138 Slim-line Mid Stroke Linear Position Sensor is an affordable, durable, accurate position sensor designed for a wide range of industrial applications. It is particularly suitable for OEMs seeking good sensor performance in situations where a small diameter, short-bodied sensor is needed and cost is important. The P138 Slim-line Mid Stroke Linear Position Sensor unit is compact and space-efficient, being responsive along almost its entire length, and like all Positek® sensors provides a linear output proportional to displacement.

Each unit is supplied with the output calibrated to the travel required by the customer, from 0-51mm to 0-100mm and with full EMC protection built in.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor has a compact 19 mm diameter stainless steel body, is easy to install and set up. Mounting options include body clamps or a stainless steel mounting flange with two 3.2 mm by 30 degree wide slots on a 25 mm pitch. The stainless steel plunger can be supplied free or captive, with female M4 thread, or spring-loaded with a ball end. The P138 also offers a range of mechanical options, environmental sealing is to IP67.

All of Positek’s position sensors are manufactured to the highest quality and use our very own patented non-contact technology. This helps to ensure the highest levels of accuracy and reliability, even in the harshest of environments. Every position sensor that Positek manufactures uses their inductive sensor technology to ensure high-precision results, and is fully customisable to meet the unique requirements of your business.

With over 25 years’ experience as a sensor manufacturer and using our onsite production facility, Positek has the flexibility to manufacture and customise any industrial position sensor, including tilt sensors and inclinometers, to any size or specification.

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Positek offers a range of options for its standard sensors. Each sensor is manufactured to suit each customer's preferences. If your requirement is outside the options given below, Positek can modify/ redesign a sensor to suit your specific requirement. Standard options are available as below:

 

Measurement Range

Factory set to any length from 0-51mm to 0-100mm in increments of 1mm. For example, if your application requires 3" (76mm) measurement, then Positek will manufacture the sensor specifically for this length. The mechanical length and calibration will be set up for 76mm.

 

Electronic Options

Output Signal Supply Input Option Code
Standard    
0.5V to 4.5V DC ratiometric +5V DC nom. ±0.5V A
0.5V-4.5V DC +9 - 28V DC nom 24V G
0.5V-9.5V DC +13 - 28V DC nom 24V C

 

Connector/Cable Options

Option Option Code
Connector, Axial, IP67, M8 4 pin J
Cable, Axial Gland IP67 L
Cable length - The standard length of cable supplied with a Positek position sensor is 50cm although you can specify any length you require. Specified in cm after the L or I e.g. L200 for 200cm cable from axial cable gland

 

Mounting Options

Option Option Code
Front flange mount N
Body Clamps
See Drawing
P

 

Plunger Options

Option Option Code
Spring loaded (extended) R
Dome end on plunger T
Non captive plunger (not with options "R" or "T") V

 

<+/-0.1% FSO Linearity error (10mm minimum stroke length) Option Code
Z650

Dimensions

Body Diameter 19mm
Travel Any stroke from 0-51mm to 0-100mm (e.g. 76mm)
Independent Linearity <±0.25% at 20°C
<±0.1% available on request
Temperature Coefficient <±0.01%/°C Gain & <±0.01%FS/°C Offset
Resolution Infinite
Noise

<0.02% FSO

Frequency Response

>10KHz (-3dB)

 

Output Signal and Output Load

Output Signal Output Load
0.5 to 4.5 V DC ratiometric 5k Ohms min
0.5 to 4.5 V DC 5k Ohms min
0.5 to 9.5 V DC 5k Ohms min
Supply Current 10 mA Typical 20 mA max

 

Temperature Limits

Operating -40 to +125°C (5V input only)
-20 to +85°C
Storage -40 to +125°C

 

Other

EMC Susceptibility EN 61000-6-2
EMC Radiated EN 61000-6-3
Vibration IEC 68-2-6: 10g
Shock IEC 68-2-29: 40g
MTBF 350,000 hrs 40°C Gf
Sealing IP67
Electrical Connections Screened cable or integral connector