High-density thermocouple simulation module has 32 channels in single PXI slot

12-02-2020 | Pickering | Subs & Systems

Pickering Interfaces has launched a low voltage output module excellent for simulating the operation of a thermocouple. The 41-761 uses a single PXI slot yet can offer up to 32 independently isolated channels of thermocouple simulation. With ranges of +/-20mV, +/-50mV and +/-100mV it is ideal for simulating any thermocouple type.


Offered with a selection of 32, 24, 16 or eight channels, the device is part of a developing family of thermocouple simulators from the company. Each channel offers a low voltage output over two connector pins able to provide ±20mV with 0.7µV resolution, ±50mV with 1.7µV resolution and ±100mV with 3.3µV resolution, comprising most thermocouple types. The usage of two-wire outputs and isolation from ground assures that the device can be employed to accurately simulate low voltages even in the presence of common-mode voltages in the system. Each simulation channel can offer an open circuit setting to simulate faulty wiring connections to a sensor. For enhanced accuracy, each channel of the Low Voltage Output carries precise calibration data stored in EEPROM on the module. Regular calibration of the channels is not required.


“The accurate and reliable simulation of thermocouples is required by customers in demanding markets such as defence, aerospace and automotive”, said Keith Moore, CEO at Pickering Interfaces. “This new, high-density solution can be supported in PXI and Pickering’s modular LXI/USB chassis.”

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