RTD Emulator

About RTD Emulator

Resistor Temperature Detectors (RTD) are sensors used to measure temperature. The detector is based on material with accurate relationship between resistance and temperature as resistance is easy to measure.

This device is intended to serve as emulator of RTDs by allowing to set desired resistance or temperature on each port. Such a device is very useful for testing of systems that measure temperature using RTD, for instance heating systems. Programmable and possibly very high temperature slew rate of this device allows for automatic boundary-condition and fault testing, emulation of which is otherwise very cumbersome.

Parameters

Parameter	Value
Mounting	35/7,5 DIN
Width	3 modules
Number of emulated RTDs	4
Resistance step	1.953 Ohm
Temperature accuracy NTC 10k 25 °C	+- 0.25 °C
Nominal resistance	120 to 100225 Ohm

Functions and Benefits

4 channels isolated from power and RS-485
Direct resistance settings
Emulate NTC using coefficients and temperature
Platinum sensors are supported (low absolute accuracy, can be used for dynamic response testing)
Programmable temperature slew rate
1 Digital output Modbus RTU with address switch
Remote firmware update over Modbus

Download

pdf

RtdEmul-datasheet

Software

Softwar tools are available on Github supporting:

Graphical visualization of all registers
Read and write register operations
Update firmware of the device

Photography