Low DP Transducer Output Issues

If the unit seems to be "reading" the opposite of what is expected, check that it is plumbed correctly:

• The space to be monitored is plumbed to the HI port and the reference space is plumbed to the LO port.

If the output seems to be twice or half of what it should be, check the range of the unit: is it bi-directional or uni-directional?

• The output signal is proportional to the pressure range

Where are you reading the signal from?

• Check the output directly from the transducer
  

  • There might be a issue with how the PLC/BAS system is reading the signal

  
  

Try to zero the instrument

• Pull the instrument off the system and let it hang in the air

• Leave both ports open to atmosphere or with place a jumper tube over the high and low port and put a little pin prick in the tube

• Follow the "adjust zero" instructions in the operating instructions for that transducer
  

  • All operating instructions can be found on the website