Datasheet

F.A.Q.

The temperature of my thermocouple seems to be backwards! If I heat up the probe the reported temperature goes

down

This is likely caused by the thermocouple wires being labled incorrectly. Try swapping the two thermocouple leads,

even if yellow and red wires are in the right slots - we've seen some thermocouple where the wire colors are wrong.

My MAX31855 output is really unstable and noisy - If I touch or move the probe the temperature output goes crazy

The MAX31855 is surprisingly sensitive, we've found a good way to fix this is to place a 0.01uF to 0.1uF capacitor

across the thermocouple leads (that is, place the capacitor into the blue terminal block, or solder to the bottom as

shown below).

My thermocouple output has an offset / I have multiple thermocouples and they dont 'agree' on a temperature

K thermocouples are not precision temperature measurement devices! There will be offsets & differences between