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13
CALIBRATION
continued from page 12
Step 3: Attach the adapter to the sensor cap assembly.
Step 4: Press the TICK/CAL button (B) and the cal icon will flash
and numbers will change on the display. Upon completion, the
working display will appear with the gas reading.
A reading of “bAd” indicates unsuccessful calibration. Repeat
process if “bAd” appears. Press the POWER/MUTE button (A)
to clear the “bAd” display reading and go to the working display.
Continued unsuccessful calibrations may indicate faulty sensor.
Any instrument that will not calibrate or continues to indicate
“bAd” on the display, should be taken out of service. Please
contact Sensit Technologies for further assistance.
CALIBRATION CHECK
To verify the accuracy of any Sensit® HXG-2d it must be ex-
posed to a known concentration of test gas. Any sensor that
does not meet the specifications listed in this manual may re-
quire calibration or replacement.
Any time it is suspected the Sensit® HXG-2d is not working properly,
has read “OL” or has been exposed to silicone, check calibration.
Calibration is the process of setting the readings of the instru-
ment to equal the value of the certified calibration gas. The in-
strument should operate for 5 minutes before calibrating.
NOTE: Use of calibration kits other than those offered or ap-
proved by SENSIT TECHNOLOGIES may cause inaccurate read-
ings. Repairs may be required if the instrument fails to calibrate.
Use only sensors supplied by SENSIT TECHNOLOGIES or their
authorized representative.
NOTE: During the calibration process the numbers on the dis-
play are not the actual gas concentration.
Step 1: Prepare 50%LEL or 10% LEL Methane/Air, depending
on what calibration point the unit calls for, and proper regulator
and adapter.
Step 2: Press the TICK/CAL button (B) for 6 seconds until “GAS”
is displayed.
CALIBRATION
(Continued on page 13)
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