Siemens ULTRAMAT 23 - Functions; Diagnostics

Maintenance
6-5
Operating instructions ULTRAMAT 23 gas analyzer
C79000-B5276-C216-03
Table 6-1 Fault messages
Fault message RemedyPossible causes
AUTOCAL drift beyond tolerance Sample cell contaminated
Detector faulty
IR source power too low
Fault at EEPROM Checksum not OK
Read character ≠ written
character
IR channel 1 not calibrated Calibration of full-scale value/sag
missing
IR channel 2 not calibrated Calibration of full-scale value/sag
missing
IR channel 3 not calibrated Calibration of full-scale value/sag
missing
Voltage for IR source beyond
t
l
IR source not OK
tolerance
Motherboard faulty
Supply of bridge beyond
t
l
Channel amplifier faulty
tolerance
Motherboard faulty
Half-bridge voltage beyond
t
l
Channel amplifier faulty
tolerance
Motherboard faulty
Lock-in fault Channel amplifier faulty
Motherboard faulty
Sensitivity of O
2
sensor too low O
2
sensor faulty or old Replace the O
2
sensor as
described in Section 6.2.1 .
Overflow of AD converter Electronics faulty
External fault Signaling of an external fault