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Calibration and Verification Teledyne API – Model T700 Dynamic Dilution Calibrator
218
7.5. T700 GAS PRESSURE SENSOR CALIBRATION
Note
The procedures described in this section require a separate pressure
meter/monitor.
The T700 Dynamic Dilution Calibrator has several sensors that monitor the pressure of
the gases flowing through the instrument. The data collected by these sensors is used to
compensate the final concentration calculations for changes in atmospheric pressure and
is stored in the CPU’s memory as various test functions:
Table 7-2: T700 Pressure Sensor Calibration Setup
SENSOR
ASSOCIATED
TEST FUNCTION
UNITS
PRESSURE MONITOR
MEASUREMENT POINT
Diluent Pressure Sensor
DIL PRESSURE PSIG
Insert monitor just before the inlet port of the
diluent MFC
Cal Gas Pressure Sensor
CAL PRESSURE PSIG
Insert monitor just before the inlet port of the
cal gas MFC
O
3
Regulator Pressure
Sensor
(Optional O
3
Generator)
REG PRESSURE PSIG
Insert monitor in line between the regulator
and the O
3
gas pressure sensor located on
the O
3
generator / photometer pressure /
flow sensor PCA
Sample Gas Pressure
Sensor
(Optional O
3
Photometer)
PHOTO SPRESS IN-HG-A
Use monitor to measure ambient
atmospheric pressure at the calibrator’s
location.
06873B DCN6388