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Troubleshooting & Service Teledyne API - T100 UV Fluorescence SO2 Analyzer
238
Table 12-1: Warning Messages - Indicated Failures
Warning Message Fault Condition Possible Causes
ANALOG CAL
WARNING
The instruments A/D
circuitry or one of its analog
outputs is not calibrated
A parameter for one of the analog outputs, even one not currently being used,
has been changed and the analog output calibration routine was not re-run
A/D circuitry failure on motherboard
Other motherboard electronic failure
BOX TEMP WARNING
Box Temp is < 5°C or >
48°C.
NOTE: Box temperature typically runs ~7
o
c warmer than ambient temperature.
Poor/blocked ventilation to the analyzer.
Stopped exhaust-fan
Ambient temperature outside of specified range
CANNOT DYN SPAN
Dynamic Span operation
failed
Measured concentration value is too high or low.
Concentration slope value too high or too low
CANNOT DYN ZERO
Dynamic Zero operation
failed
Measured concentration value is too high.
Concentration offset value too high.
CONFIG INITIALIZED
Configuration and
Calibration data reset to
original Factory state.
Failed disk on module
User erased data
DARK CAL WARNING The Dark Cal signal is
higher than 200 mV.
Light leak in reaction cell
Shutter solenoid is not functioning
Failed relay board
I
2
C bus failure
Loose connector/wiring
PMT preamp board bad or out of cal
DATA INITIALIZED Data Storage in DAS was
erased
Failed disk on module
User cleared data
HVPS WARNING High voltage power supply
output is <400 V or >900 V
High voltage power supply is bad
High voltage power supply is out of cal
A/D converter circuitry is bad
IZS TEMP WARNING On units with IZS options
installed: The permeation
tube temperature is Sample
chamber temperature is
< 45°C or > 55°C
Bad IZS heater
Bad IZS temperature sensor
Bad relay controlling the IZS heater
Entire relay board is malfunctioning
I
2
C bus malfunction
Failure of thermistor interface circuitry on motherboard
PMT DET WARNING PMT detector output is >
4995 mV
Failed PMT
Malfunctioning PMR preamp board
A/D converter circuitry failure
PMT TEMP WARNING PMT temperature is
< 2°C or > 12°C
Bad PMT thermo-electric cooler
Failed PMT TEC driver circuit
Bad PMT preamp board
Failed PMT temperature sensor
Loose wiring between PMT temperature sensor and PMT Preamp board
Malfunction of analog sensor input circuitry on motherboard
RCELL TEMP
WARNING
Sample chamber
temperature is
< 45°C or > 55°C
Bad reaction cell heater
Bad reaction cell temperature sensor
Bad relay controlling the reaction cell heater
Entire relay board is malfunctioning
I
2
C bus malfunction
REAR BOARD NOT
DET
Mother Board not detected
on power up.
Warning only appears on serial I/O COMM port(s)
Front panel display will be frozen, blank or will not respond.
Massive failure of mother board.
SAMPLE FLOW WARN
Sample flow rate is < 500
cc/min or > 1000 cc/min.
Failed sample pump
Blocked sample inlet/gas line
Dirty particulate filter
Leak downstream of critical flow orifice
Failed flow sensor/circuitry
SAMPLE PRES WARN
Sample Pressure is <10 in-
Hg or
> 35 in-Hg
1
If sample pressure is < 10 in-hg:
o Blocked particulate filter
o Blocked sample inlet/gas line
o Failed pressure sensor/circuitry
If sample pressure is > 35 in-hg:
o Blocked vent line on pressurized sample/zero/span gas supply
o Bad pressure sensor/circuitry
06807C DCN6650