Copyright 2019 Baker Hughes Company.
English–137M7122 DPI 705E / DPI 705E IS User Manual | 3
2. The instrument will measure temperature in Degrees Celsius by default as shown below.
3. To change the temperature unit, press the
key. The temperature reading is then
shown in Degrees Fahrenheit.
4. To change the measurement unit, press the
key again. The reading is then shown in
Ohms.
1.4 ZERO
A zero should be performed on a Gauge or Differential pressure instrument before measuring
pressure. The zero function is not available on absolute pressure sensors (because absolute
vacuum would have to be applied to them to make it valid) and is not available on RTD
-
Interface.
To perform a zero:
1. Open all pressure ports to atmospheric pressure.
2. Press the
and
keys together.
CAUTION
Zero is a function that causes a non-reversible adjustment of the
zero reading and effectively adjusts the calibration of the sensor. Do not confuse
zero with tare - please read both sections if uncertain.
