DIN KOS203P Temperature Converter In-Head

The KOS203P in-head transmitter incorporates the latest digital technology to ensure accurate drift free linearisation. It connects to any standard RTD Temperature sensor and converts the output to a linear 4-20mA output signal, providing a level of performance at a cost that was not possible with early analogue types.

A simple push button operation ranges and calibrates the KOS203P 4-20mA temperature transmitter, eliminating the need for soldering links, potentiometers or PCB’s.

High accuracy and stability coupled with the flexibility of reduced stock holding and the quick and easy way of bench re-arranging makes the KOS203P the ideal choice for the majority of RTD sensing requirements.

The KOS203P is linearised to comply with all common RTD sensor standards without affecting accuracy as the Zero & SPAN are se to a particular sensor type.

An on board LED indicates the successful completion of the range programming and also provides an instant indication of sensor health.

 

INPUT
Sensor Type pt100 100 Ohm @ 0ºC 2 or 3 wire
Sensor Range (-200 to 850)ºC (18 to 390) Ohm
Sensor Connection Screw Terminal
Minimum Span (See note 1) 25ºC
Linearisation BS EN 60751 (IEC 751) Standard / JISC 1604
Accuracy (See note 2) ±0.1ºC ±0.05% of Reading
Thermo Drift 0.0025% /ºC
Excitation Current <200μA
Lead resiitance effect 20Ω per leg
Maximum Lead Resistance 0.002ºC/Ω
Note 1 Any span may be selected, full accuracy is only guaranteed for spans greater than the minimum recommended Span.
Note 2 Basic measurement accuracy includes the effects of calibration linearisation and repeatability.
OUTPUT
Type Two wire (4 to 20 mA) Sink
Limits Low 3.8mA; High 21.5mA
Accuracy ±0.1ºC ±0.05% of Reading
Loop effects ±0.2μA / V measured @ 50Hz 1 V (peak to peak)
Thermal Drift ±1μA/ºC Typical; ±1.5μA Max.
Max Load [(Vsupply-10)/20]KΩ
Update Time 0.5 Seconds
Response Time 1 second to reach 90% of the final value
start up time From power up typically 5 seconds
Filter Factor Adaptive
Ambient Temperature -40ºC to +85ºC
Connection Screw Terminal
Approvals BN EN 61326; 1998 - Electrical equipment for measurement and control ANNEX A; ANNEX F
Factory Default 0 to 100ºC upscale burnout (0.0ºC user trim)