Accuracy Check Intervals; Accuracy Check Tolerances; Inspection And Routine Maintenance - Intoximeters Alco-Sensor FST Operator's Manual

ALCO-SENSOR FST

Accuracy Check Intervals

Unless stated otherwise by your programs protocol, if an accuracy check has not occurred within the past 31 days,
it is recommended that an accuracy check be run in conjunction with a subject test to ensure the instrument has
maintained proper calibration.

Accuracy Check Tolerances

The result of an accuracy check should not differ from the expected value by more than the tolerances prescribed
by the program guidelines under which the test is being administered. Usually these tolerances range from ± .005
g/210L or 5% whichever is greater, to ± .010 g/210L or ± 10% whichever is greater.
Intoximeters has set a factory standard for accuracy checks run directly following a calibration. The factory
standard states: the tolerance range for the expected value of the required accuracy check run directly following a
calibration should be no greater than ± .003 g/210L of the expected value if the calibration is to be considered
successful.
Refer to your policy to determine the guidelines for your testing program.

Inspection and Routine Maintenance

The instrument should be calibrated when the displayed result of an accuracy check differs from the expected
result of the standard gas sample by more than the accepted tolerances established by the protocols of the
specific program under which the instrument is being utilized.
The instrument should be taken out of service if:
• the instrument repeatedly fails to maintain its calibration, (i.e. if after two successive attempts to calibrate
the device a successful accuracy check was not obtained);
• the instrument fails to maintain its calibration on three consecutive, properly performed, monthly accuracy
checks;
• the instrument consistently takes more than two minutes to perform a breath analysis on a sample with a
concentration less than .100 grams per 210 liters of breath.
IF THE INSTRUMENT EXHIBITS ANY OF THE ABOVE CHARACTERISTICS CALL INTOXIMETERS SERVICE
DEPARTMENT AT (314) 429-4000 OR (800) 451-8639.
Alco-Sensor FST Operator Manual, Page 24 of 33, 11/30/2017