Bacharach HI FLOW Sampler, Instruction, Page: 67 / 72

Hi Flow Sampler Troubleshooting
Instruction 0055-9017
63
TABLE 6-1. TROUBLESHOOTING GUIDE (Cont.)
“ Check Background Offset ” message
appears at bottom of display.
The background-gas sensor did not zero
properly during start-up. Switch OFF
instrument and restart in an area with clean
air. Replace sensor if necessary.
“ Check Leak Offset ” message appears at
bottom of display.
The leak-gas sensor did not zero properly
during start-up. Switch OFF instrument and
restart in an area with clean air. Replace
sensor if necessary.
“ Check Leak Rate Difference ” message
appears at bottom of display.
The calculated difference between leak rates 1
and 2 was greater than 10%.
“ Check Zeroing Bypass ” message appears
at bottom of display.
The ESC key was pressed during startup,
thus bypassing the normal sensor zeroing
process. Although the instrument will operate
under this condition, no leak rate tests
should be made because of the potential
inaccuracy of the sensor channels.
“ Check Background Greater Than Leak ”
message appears at bottom of display.
The measured background gas level is greater
than the measured leak gas concentration.
Make sure the background gas sample hose
is not positioned too close the leak source.
“ Low Battery ” message appears at bottom
of display.
Battery voltage is below 4.0 volts. Recharge
battery pack per Section 5.2.
6.3 Error Codes in Saved Test Records
When saved test records are sent to a personal computer and later
viewed in a spreadsheet program (refer to Section
3.16 Importing Saved
Data into a Spreadsheet ), Field 18 “Error Codes” in the saved records
contains letter-codes that identify problems that have occurred during
that particular test. Refer to Table 6-2 for a listing and description of
these codes:
TABLE 6-2. FIELD 18 ERROR CODES
Error
Code
Description
A Background gas sample pump blocked.
B Leak gas sample pump blocked.
C The background gas sensor needs calibrated at 2.5% and/or 100% CH
4
.
D The leak gas sensor needs calibrated at 2.5% and/or 100% CH
4
.
E The instrument failed to zero the background gas sensor during start up.
F The instrument failed to zero the leak gas sensor during startup.
G The user pressed the ESC key during start up before the sensors had a chance to
completely zero.
H The leak rate measurement #1 – #2 calculation failed.
I The measured background gas level was greater than the measured leak source gas
level. (This is an indication of improper equipment setup.)