Dräger Polytron 5100 Instructions For Use Manual page 23

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Calibration Messages
Display Sequence
Over range
Under range
High calibration
HI GAS
gas concentration
Low calibration
LO GAS
gas concentration
Dräger Polytron 5100
Fault
Zero Cal: Exceeding the lower zero calibration limit
Span Cal: Exceeding the lower span calibration limit
Zero Cal: Exceeding the upper zero calibration limit
Span Cal: Exceeding the upper span calibration limit
Gas concentration exceeds sensor range during span
calibration
Gas concentration too low to perform proper span
calibration
Cause
Maintenance
Remedy
Zero Cal: Press the down key
Span Cal: Press the down key
Zero Cal: Press the up key
Span Cal: Press the up key
Use lower cal gas concen-
tration or press down key
Use higher cal gas concen-
tration or press up key
23