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  1. jrcagle

    Thermocouple troubleshooting

    There are three ungrounded, 1/8" OD type J thermocouples in a single pipe well operating at ~690 degF. One of them is reading ~15 degF lower than the other two. We're being asked to troubleshoot the coolest thermocouple to see if the temperature deviation is real or not. There is no...
  2. jrcagle

    Erratic draft pressure indication o a heater due to wind

    I have several pressure transmitters monitoring very low (trasmitters have -3 to 3 inWC range) differential pressure. One side is tubed to the heater box and the other side is reading atmosphere. The DP reading gets erratic at times and I can correlate this to high wind speed. The...
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