Model 2180A
35
7.5 Sample Calibration Schedule and Checklist
Sensor Serial Number Location
___________________ _____________________
1. Installation and Preliminary calibration.
Record date after preliminary calibration is
done.
Date: __________________
2. 24-hour calibration. Record date after 24-
hour calibration is done.
Date: __________________
3. 7-day calibration check. Record date and
reading of calibration check. Repeat after 7
days if reading deviates more than ±20% or 2
ppm, whichever is greater. Otherwise go to
step 4.
Date/Reading Date/Reading Date/Reading
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
4. 14-day calibration check. Record date and
reading of calibration check. Repeat after 14
days if reading deviates more than ±20% or 2
ppm, whichever is greater. Otherwise go to
step 5.
Date/Reading Date/Reading Date/Reading
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
5. 30-day calibration check. Record date and
reading of calibration check. Repeat after 30
days if reading deviates more than ±20% or 2
ppm, whichever is greater. Otherwise go to
step 6.
Date/Reading Date/Reading Date/Reading
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
6. 60-day calibration check. Record date and
reading of calibration check. Repeat after 60
days if reading deviates more than ±20% or 2
ppm, whichever is greater.
Date/Reading Date/Reading Date/Reading
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
7. 90-day calibration check.
Date/Reading Date/Reading Date/Reading
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
____ ____ ____ ____ ____ ____
Table 11: Calibration Schedule