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116
Teledyne API – Model T400 O
3
Analyzer
083730400A DCN8130
ALERT
FAULT CONDITION
POSSIBLE CAUSES
SAMPLE PRES WARN
Sample Pressure is <15
in-Hg or > 35 in-Hg
Normally 29.92 in-Hg at
sea level decreasing at 1
in-Hg per 1000 ft of
altitude (with no flow –
pump disconnected).
If Sample Pressure is < 15 in-HG:
•
Blocked Particulate Filter
•
Blocked Sample Inlet/Gas Line
•
Failed Pressure Sensor/circuitry
If Sample Pressure is > 35 in-HG:
•
Bad Pressure Sensor/circuitry
SAMPLE TEMP WARN
Sample temperature is <
10
°
C or > 50
°
C.
•
Ambient Temperature outside of specified range
•
Failed Sample Temperature Sensor
•
Relay controlling the Bench Heater
•
Failed Relay Board
•
I
2
C Bus
PHOTO REF WARNING
Occurs when Ref is
<2500 mVDC or
>4950 mVDC.
•
UV Lamp
•
UV Photo-Detector Preamp
O3 GEN TEMP
WARNING
IZS Ozone Generator
Temp is outside of control
range of 48
°
C
±
3
°
C.
•
No IZS option installed, instrument improperly configured
•
O
3
generator heater
•
O
3
generator temperature sensor
•
Relay controlling the O
3
generator heater
•
Entire Relay Board
•
I
2
C Bus
SYSTEM RESET
The computer has
rebooted.
•
This message occurs at power on.
•
If it is confirmed that power has not been interrupted:
•
5 VDC power
•
Fatal Error caused software to restart
•
Loose connector/wiring
A failure of the analyzer’s CPU or Motherboard can result in any or all of the preceding messages.
5.7.2 F
AULT
D
IAGNOSIS WITH
D
ASHBOARD
F
UNCTIONS
Besides being useful as predictive diagnostic tools, the functions viewable from the front
panel can be used to isolate and identify many operational problems when combined with
a thorough understanding of the analyzer’s Theory of Operation (see Section 6).
The acceptable ranges for these test functions are listed in the “Nominal Range” column
of the analyzer
Final Test and Validation Data Sheet
that was shipped with the
instrument. Values outside these acceptable ranges indicate a failure of one or more of
the analyzer’s subsystems. Functions whose values are still within the acceptable range
but have significantly changed from the measurement recorded on the factory data sheet
may also indicate a failure.
Содержание T400
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