AMI Analyzer Manual
Maintenance and troubleshooting
15
Maintenance and troubleshooting
Maintenance:
The model 2001LC is virtually maintenance free other than for periodic calibration and
occasional sensor replacement.
Periodic Calibration:
The analyzer should be calibrated about once every month to obtain the best accuracy.
The sensor typically declines in sensitivity by about 1% per month, so a monthly
calibration is usually satisfactory. Use in a particularly aggressive environment may
degrade the sensor faster: in this case calibrate more often.
Sensor Replacement:
This should be done based on the Span Factor feature, rather than as a response to a
dead sensor. See the chart below for recommended sensor replacement.
Sensor
Part
number
Description
Expected life
T2
4SEN09-1
Trace oxygen - CO2 background
9 months to 2 years
P2
4SEN03-1
0-50% Percent oxygen - inert gas
9 to 12 months
P3
4SEN04
0-25% Percent oxygen - CO2 background
9 to 12 months
P4
4SEN08
100% oxygen - inert impurity
6 to 9 months
Table 1. AMI sensor types
