H-25C Instruction Manual
Instruction 3015-0216
51
(2) Air is leaking into the probe through the probe seal ( 0 -ring or gasket Check whether or not the nut
(rod) is loose. For the L-type probe, check whether or not the 0 -ring is in place.
(3) Contamination deposited on manifold internal flow path surfaces. Return to Bacharach for repair
(component replacement).
6.2.4 Measured Value is Too High
The three most likely causes are:
(1) Not properly calibrated. Re-calibrate.
(2) Activated charcoal filter has reached end of life. Replace with new activated charcoal filter.
(3) Tubing not connected to activated charcoal filter.
6.2.5 “AIR FLOW" on Steady
The most likely five causes are
(1) Probe filter clogged. Replace with new filter.
(2) Clogged disk filter. Replace with new filter.
(3) Pump not working, or performing poorly. Replace with good pump.
Note - No adjustment required after replacement.
(4) Manifold internal flow path clogged. Return to Bacharach for repair (component replacement).
(5) Flow sensor failure Return to Bacharach for repair (component replacement).
6.2.6
Frequent Calibration Requests
The most likely two causes are:
(1) Instrument is reacting to some gas in the surrounding air. Improve the operating environment.
Decrease the search mode sensitivity (sensitivity multiplier). (See Subsection 2.2.9)
(2) Calibration request interval time setting is too short. Set longer interval. (See Subsection 2.2.8)
6.2.7 Very Short Sensor Life
The most likely three causes are:
(1) Sensor sensitivity set too high. Lower sensor sensitivity. (See Subsection 3.1.3)
(2) Activated charcoal filter not drawing in gas. Replace with new activated charcoal filter. (activated-
charcoal pack)
(3) Liquid has been sucked into the instrument.
6.2.8 "CAL FAIL" on Steady
The most likely five causes are:
Содержание H-25C
Страница 14: ...H 25C Instruction Manual Instruction 3015 0216 14 1 6 Internal Flow Paths Measured Gas Internal Flow Path...
Страница 22: ...H 25C Instruction Manual Instruction 3015 0216 22 When power is applied the display will appear as shown below...
Страница 27: ...H 25C Instruction Manual Instruction 3015 0216 27 BACHARACH...
Страница 58: ...H 25C Instruction Manual Instruction 3015 0216 58 Notes...