Check whether the thermocouple is disconnected or broken. Also, with no input connected, try shorting plus and minus. If the input terminal temperature is displayed, the problem is not with the µR.
Related Products & Solutions
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µR10000 & µR20000
The μR series are the compact industrial recorders with the recording widths of 100 mm (μR10000) and 180 mm (μR20000). Measured data can be saved to an SD memory card while recording on chart paper.