Teledyne T200, Руководство по эксплуатации, Страница: 283 / 425

Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual Troubleshooting & Service
281
QUESTION ANSWER
How long does the sample pump
last? The sample pump should last one to two years and the pump head should
be replaced when necessary. Use the
RCEL
pressure indicator on the front
panel to see if the pump needs replacement.
If this value goes above 10 in-Hg-A, on average, the pump head needs to
be rebuilt.
Why does my RS-232 serial
connection not work? There are several possible reasons:

The wrong cable: please use the provided or a generic “straight-
through” cable (do not use a “null-modem” type cable) and ensure the
pin assignments are correct (Sections 3.3.1.8 and 6.3).

The DCE/DTE switch on the back of the analyzer is not set properly;
ensure that both green and red lights are on (Section 6.1).

The baud rate of the analyzer’s COM port does not match that of the
serial port of your computer/data logger (Section 6.2.2).
How do I make the instrument’s
display and my data logger
agree? This most commonly occurs when an independent metering device is used
besides the data logger/recorder to determine gas concentration levels
while calibrating the analyzer. These disagreements result from the
analyzer, the metering device and the data logger having slightly different
ground levels.
Use the data logger itself as the metering device during calibration
procedures.
Do the critical flow orifices of my
analyzer require regular
replacement? No. The o-rings and the sintered filter associated with them require
replacement once a year, but the critical flow orifices do not.
See Section 11 for instructions.
How do I set up and use the
Contact Closures (Control Inputs)
on the Rear Panel of the
analyzer? See Section 3.3.1.6.
06858E DCN7057