Teledyne MODEL T703 Manual Do Utilizador
T703 Calibration and Verification
Teledyne API T703 Calibrator Operation Manual
142
8.3. T703 GAS PRESSURE SENSOR CALIBRATION
The T703 Calibrator has two 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 test functions:
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 test functions:
Table 8-1: T703 Pressure Sensors
SENSOR
ASSOCIATED
TEST FUNCTION
UNITS
PRESSURE MONITOR
MEASUREMENT POINT
Regulator Pressure Sensor
REG PRESSURE
PSIG
Capped fitting on backside of regulator
assembly. See Figure 8-4
assembly. See Figure 8-4
Photometer Sample Gas
Pressure Sensor
PHOTO SPRESS
IN-HG-A
Use monitor to measure ambient
atmospheric pressure at the calibrator’s
location.
8.3.1.1. Gas Pressure Sensor Calibration Set Up
The procedures described in this section require an independent, calibrated pressure meter/monitor be attached
at the following location.
at the following location.
PHOTOMETER
PRESSURE SENSOR
O
3
GEN / PHOTOMETER
PRESSURE / FLOW SENSOR PCA
O
3
GAS INPUT
PRESSURE SENSOR
O
3
FLO
W
SENS
O
R
O
3
Generato
r A
ssem
b
b
ly
O
3
GEN
E
RA
TO
R
TO
R
Flo
w
w
C
ont
ro
ro
l
(10
0 cm
0 cm
3
)
REF/MEAS
Valve
On Back Panel
Chassis
GAS OUTPUT MANIFOLD
PHOTOMETER
OUTLET
TO ANALYZER
VENT
TO ANALYZER
DRY AIR
IN
ZERO AIR
IN
PHOTOMETER
INLET
EXHAUST
PHOTOMETER
ZERO OUT
PHOTOMETER
ZERO IN
PHOTOMETER BENCH
PUMP
Flow Control
(800 cm
(800 cm
3
)
INTERNAL
VENT
Flo
w
w
Co
nt
nt
rol
(5.0 lp
m)
Pressure
Regulator
CHA
R
COA
L
SC
RUB
RUB
B
ER
Filter
PUMP
Flo
w
w
Co
nt
nt
rol
(1.0
LP
M)
M)
Pressure
Monitor
Figure 8-3:
Pressure Calibration Monitor Points
07223B DCN6378