Table 9-2: Front Panelw - Teledyne 200A Instruction Manual

Nitrogen oxides analyzer
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Teledyne API Model 200A NO
Table 9-2: Front Panel Warning Messages
Message
SYSTEM RESET
RAM INITIALIZED
SAMPLE FLOW WARN
OZONE FLOW WARNING
RxCELL PRESS WARNING
BOX TEMP WARNING
RCELL TEMP WARNING
IZS TEMP WARNING
(table continued)
Analyzer Instruction Manual, 02246, Rev. F1
X
Description
Analyzer was reset/powered on. This warning occurs every
time the instrument is powered up, as in a power failure. It can
also occur if the RAM or EEPROM is reset.
RAM was erased. The RAM contains the DAS averages which
get erased when the RAM is initialized. It also contains
temporary data used by the M200A to calculate concentrations.
No setup variables are stored in the RAM.
The calculated sample flow is outside the hi/low limits. Since
the flow is calculated, it probably means the pressure has
gotten too low. This can be caused by a plugged sample inlet,
or water in ozone line into the reaction cell.
Ozone flow out of spec. warnings occur most often because of
loss of vacuum, which causes the ozone flow to go to zero.
They also can occur due to a flow sensor failure.
Vacuum out of spec. warnings are caused by leaks, pump
failure or disconnected pump.
Box temp. out of spec. Instrument fan failure, enclosure
temperature failure. Operation of the M200A in a too warm or
cold environment will cause degradation of data quality and
shorten the life of the instrument.
Reaction cell temp. out of spec. The warning message is most
often present during initial warm-up or if the connector to the
heaters is not plugged in after dis-assembly. It has also
occurred if the thermistor is not in position in the reaction cell.
IZS temp. out of spec. The warning message is most often
present during initial warm-up or if the connector to the
heaters is not plugged in after dis-assembly. Also check the
position of the thermistor in permeation tube heater block.
Check to see if there is a good seal at the top of the heater
block.
9-9

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