Sensor Replacement Message - Scott PORTABLE GAS DETECTION INSTRUMENT User Manual

Note: SCOTT INSTRUMENTS supplies Teflon®-lined tubing with all
chlorine and ammonia calibration kits. Sticky gases such as chlorine
and ammonia require this tubing be used for calibration. Using tub-
ing of another type may inhibit the automatic calibration of a MINI-SA
and lead to improper readings or a false failed sensor message. All
other calibration kits are supplied with Tygon (R-3603) Tubing.
SCOTT INSTRUMENTS also recommends that the tubing and cylinder
regulator used with a specific toxic gas not be used with other gases.

6.5 SENSOR REPLACEMENT MESSAGE

If a successful "AUTO CALIBRATION" reveals that the gas sensor is near the
end of its service life, the MINI-SA will display one of the following REPLACE-
MENT MESSAGE:
For Toxic Gases
For O
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The user must "ACKNOWLEDGE" this message by depressing either
pushbutton.
THIS SCREEN IS FOR INFORMATION ONLY AND IS NOT INTENDED TO
BE AN EXACT DETERMINATION OF WHEN A SENSOR WILL FAIL AND
REQUIRE REPLACEMENT. THE TIME REMAINING UNTIL A SENSOR
FAILS AFTER A REPLACEMENT MESSAGE IS DISPLAYED IS BASED
ON MANY FACTORS SUCH AS FREQUENCY OF CALIBRATION, LAST
CALIBRATION, FREQUENCY OF USE AND LEVEL OF GAS TO WHICH
SENSOR IS EXPOSED. A SENSOR MAY FAIL PRIOR TO DISPLAY OF
THE REPLACEMENT MESSAGE.
WARNING <gas> SENSOR
APPROACHING FAILURE
REPLACE SOON!
ACKNOWLEDGE
WARNING OXYGEN SENSOR
APPROACHING FAILURE
REPLACE SOON!
ACKNOWLEDGE
WARNING
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