Fluid Components International GF90_GF92 User Manual
Page 60
FLUID COMPONENTS INTERNATIONAL LLC
http://www.fluidcomponents.com
GF Series Flow Meter Models GF90/GF92
56
Doc. No. 06EN003229 Rev. H
All standard safety procedures must be followed during the verification process. The verification
process should be performed at normal operation conditions.
1.
Loosen the packing nut on the packing gland assembly until the internal packing is lose enough to
allow the probe assembly to be retracted out of the process and is recessed completely into
packing gland assembly. Retracted the probe assembly completely. The process ball valve remains
in the open position throughout the entire process.
2.
Level the orientation flat on the probe assembly using a standard bubble level and tighten the
packing nut to secure the assembly. To optimize the repeatability of the verification process, the
position and orientation of the probe assembly should be identical every time the process is
performed.
3.
Attach the regulator assembly with the interconnecting hose to the VeriCal ball valve, in the closed
position, on the probe assembly if it is not permanently installed.
4.
Attach the calibration gas source, typically nitrogen, to the inlet side of the regulator assembly.
5.
Determine VeriCal calibration group from the VeriCal calibration sheet. If the VeriCal calibration
group is different than the normal operation group, change to the VeriCal calibration group
through Menu 4.1.1, pass code 942.
6.
The instrument is now in the calibration verification configuration.
7.
Slowly apply 125 psig to the verification setup and check that the system is leak free using a liquid
leak detection fluid on all junction points. Turn off Nitrogen source gas.
8.
Open the VeriCal ball valve on the probe assembly, turn on Nitrogen source, adjust the pressure
regulator until the pressure guage indicates 100.00 psig +/- 0.20 psig. The Regulator Assembly will
bleed about 2 psig of the source gas in to the assembly enclosure.
9.
Allow the instrument to stabilize by sustaining the pressure for a minimum of 5 minutes.
Observing the flow and temperature reading stability on the electronic display will indicate when
the instrument has come to equilibrium.
10. Record the Indicated pressure, from the pressure guage, and flow and temperature readings from
the electronic display.
Calibration Verification Configuration