PN T900-014, Rev B
Connecting FID Hydrogen
Hydrogen quality can also dramatically affect instrument performance. See gas
specifications under “FID Hydrogen” in Chapter 5 for details. The instrument
connection is made at the “FID H2” 1/16-inch VICI port on the ta7000F Rear
Panel. Pressurize this external line to 50 PSIG (minimum 50 PSIG, maximum 60
PSIG).
An external FID H
2
shut-off valve has to be installed. This external
valve controls Hydrogen flow to the ta7000F Monitor. Hydrogen will
not actually flow throughout the instrument until the
Warm-up Cycle
is initiated and completed successfully.
The actuation pressure is set at 57 PSI (3.9 BAR) and is available at FID H2 shut-
off 1/8-inch VICI port on the ta7000F Rear Panel.
Connecting Span Gas
The ta7000F Monitor uses span gas for calibration purposes. The instrument
connection is made at the “
AUX
” 1/16-inch VICI port on the ta7000F Rear Panel.
Pressurize this external line to 80 PSIG (minimum 80 PSIG, maximum 90 PSIG).
Making the Vent Connections
All vent ports must be connected to a vent that is connected to a safe area. The
vent should be at atmospheric pressure.
2-14 | ta7000F Gas Purity Monitor
