MU Thermocouple1 CAN - not constant offset

[Piotr]

Hallo,

I have MU Thermocouple1 CAN with calibrated thermocouples type K. When I am making a cross check in temperature bath, by water 20degC via PCAN I see 30degC, and by water 10degC I see 12degC. So the offset is not constant but I know that water temperature and thermocouples are ok.

Could you help to identify the problem? Am I missing some another configuration?

Thanks in advance.

[PEAK-Support]

When you did not change any of the default settings, the unit send out the Temprature
CAN bit rate 500 kbit/s , in CAN IDs 100h, 101h, 102h, 2 Data Bytes per measuring channel/reference sensor (8 per CAN message)

Contents per measuring channel: 16-bit value: 1/16 °C
Data mode: Intel (Little Endian) signed
Transmission period 300 ms

[Piotr]

Hello,

Can be a reason that I am not using Reference sensor (default ID 102h)? For what is this sensor and how to use it? Is this sensor on the PCB?

Piotr

[PEAK-Support]

When you have nothing changed on the Config it works as i wrote.
The reference Sensor is inside the module - every measuring unit pcb in the housing have a own reference on board.
There are 4 measuring units, 1 CPU unit and the backplane in the housing.