SS2100 H
2
S TDLAS Gas Analyzer BA02191C
B-24 Endress+Hauser
Table B-1 Potential instrument problems and their solutions (Continued)
Symptom Response
Reading goes to “0”
If 4-20 mA Alarm Action is set to 2,
look on display for an error message
(see “To change parameters in
Mode 2” in the Description of Device
Parameters for this analyzer).
Gas concentration is equal to zero.
Reading goes to full scale
If 4-20 mA Alarm Action is set to 1,
look on display for an error message
(see “To change parameters in
Mode 2” in the Description of Device
Parameters for this analyzer).
Gas concentration is greater than or
equal to full scale value.
Serial output is displaying garbled data Make sure the computer COM port is
set for 19200 baud, 8 data bits, 1 stop
bit, no parity, and no flow control.
Make sure the connections are good.
Verify the correct pin connections with
an ohmmeter.
Serial output is providing no data Make sure the computer COM port is
set for 19200 baud, 8 data bits, 1 stop
bit, no parity, and no flow control.
Be sure no other programs are using
the COM port selected.
Make sure the connections are good.
Verify the correct pin connections with
an ohmmeter.
Make sure to select the correct COM
port into which the cable is plugged.
LCD does not update. Unit is locked up for
more than 5 minutes
Switch off power, wait 30 seconds, and
then switch power back on.
Not getting enough flow to the sample cell Check both the micro filter and
membrane separator for contamina-
tion. Replace if necessary. Refer to
“Replacing the Membrane Separa-
tor” on page B-7 or “Replacing the
Filter” on page B-8.
Check if supply pressure is sufficient.
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