Pressure Calibration - Seametrics PT2X Instructions Manual

SETTINGS AND CALIBRATION
Under the Communications tab you can change your
Modbus communication settings. Typically you will only
need to change the address range to connect to sensors
outside of Modbus address 1-10. In certain cases we
may need to change the Retry and Timeout settings to
overcome communication issues on very long, or corroded
cabling. See Troubleshooting section or contact Seametrics
Tech Support for details.
To restore factory default settings click
Seametrics • 253.872.0284

Pressure Calibration

To perform a calibration setup on the pressure channel
first connect to the sensor and ensure all data has been
uploaded and erased from the sensor. Next select the
calibration button (example images can be found under
conductivity calibration page 12).
Next select the calibration setup you'd like to perform:
Comfirm desired measurement units and click Continue.
Submergence:
One Point/Zero Point Calibration:
To zero pressure output to atmospheric pressure position
the sensor in air in its desired installation position (typically
vertical, if sensor will be installed horizontally position as
such during 0 point calibration). Select 1 point Calibration
under Calibration Type.
For PSIG sensors use 0 as the reference value and click
Measure.
For PSIA sensors enter current barometric pressure from
a known accurate barometer set to matching units. Enter
your reference value in the Ref. Point box and click Measure.
Page 12
PT2X INSTRUCTIONS
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