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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:
WARNING <gas> SENSOR
For Toxic Gases APPROACHING FAILURE
REPLACE SOON!
ACKNOWLEDGE
WARNING OXYGEN SENSOR
For O
2
APPROACHING FAILURE
REPLACE SOON!
ACKNOWLEDGE
The user must “ACKNOWLEDGE” this message by depressing either
pushbutton.
WARNING
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.