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IST-H MICROPROCESSOR BASED PROGRAMMABLE ISOLATED TRANSMITTER

A Programmable & user-friendly transmitter , IST-H was born. Microprocessor Based Programmable lsolated Signal Transmitter

 

Feature:
Programmable for various input signals and
   measuring ranges.
Configurable without Loop Power Connected.
Suitable for mounting in a "KN" thermocouple head box.
Inputs :
User configurable for
Resistance thermometer (PT100 / RTD)
Thermocouple (J,K,T,E,B,R,S,N,C)
Also available for Voltage, Current and mV

Output :
2-wire loop-power technology, 4 to 20 mA or 20 to 4 mA    analog output.
High accuracy in total ambient temperature range.
Sensor break fault signal level pre-setable.

   
 
The IST-H is user configurable using our software on your PC/notebook or our dedicated handheld programmer. The easy to use software is available free from your supplier or can be downloaded from our web site and should be used in conjunction with the URC-1020 USB cable which incorporates an interface converter necessary for communications.The IST-H transmitter can be configured without any loop or power connected making it easy to configure in the workshop before installation.
 
 
Specification:
   
 
Input Thermocouple (T/C) : industry standard thermocouple types J, K, T, E, B, R, S, N, C (ITS-90).
Pt100: Excitation 180uA. 2 or 3 wire connection (ITS-90 a =0.00385).
Voltage: -60mVdc to 60mVdc or 10Vdc to 10Vdc.
Current : 0-24mAdc
Accuracy Refer to Table 1 Input Signal

A/D Resolution

 16 bits

Input Sampling Rate

<200ms
Power supply DC 10 to 36V
Max. Load (V-10)/0.02 ( O )
Output Resolution 0.6 A(15 bits)
Output Response time <200ms
Common Mode Rejection Ratio(CMRR) >80dB
Electromagnetic compatibility En 50081-2, En 50082-2
Galvanic isolation 3.75 KV. between input and output
Operating Temperature -40 to 85 ° C
Humidity 0 to 90% RH
 
Table 1 Input Signal
Input signal Maximum Range Accuracy
Thermocouple J -50 to 1000 ° C (-58 to 1832 ° F ) ± 1 ° C
Thermocouple K -50 to 1370 ° C (-58 to 2498 ° F ) ± 1 ° C
Thermocouple T -270 to 400 ° C (-454 to 752 ° F ) ± 1 ° C
Thermocouple E -50 to 700°C (-58 to 1292°F) ± 1 ° C
Thermocouple B 0 to 1750 ° C (32 to 3182 ° F ) ± 2 ° C (Note1)
Thermocouple R -50 to 1750 ° C (-58 to 3182 ° F ) ± 2 ° C
Thermocouple S -50 to 1750 ° C (-58 to 3182 ° F ) ± 2 ° C
Thermocouple N -50 to 1300 ° C (-58 to 2372 ° F ) ± 2 ° C
Thermocouple C -50 to 1800 ° C (-58 to 3272 ° F ) ± 2 ° C
Pt100 -200 to 600 ° C (-328 to 1112 ° F ) ± 0.2 ° C
mV -60mVto 60mV ± 0.01m V
Voltage (Note2) -10 to 10Vdc ± 1m V
Current (Note2) 0 to 24mAdc ± 10A
 
Note 1 : Accuracy is not guaranteed between 0 and 400°C (0 and 752°F) for type B
Note 2 : If you require either mV V or mA please specify with order.
 
 
Dimension:
 
 
 
Wiring Diagram:
 
 
 
Ordering Information:
 

The standard unit is supplied set for thermocouple/PT100 inputs.
If you require mV, voltage or current you must please specify clearly with order.
The transmitters are otherwise user configurable.
Should you require that the factory set the inputs and ranges the full code must be specified
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