SS2100 H
2
S TDLAS Gas Analyzer BA02191C
B-22 Endress+Hauser
Symptom Response
Front panel display is not lit and no char-
acters appear
Check for correct voltage on terminal
block input. Observe polarity on DC
powered units.
Check for correct voltage after fuse(s)
are replaced.
Check for 5 VDC on red wires, 12 VDC
on yellow wires, and 24 VDC on orange
wires from power supply.
Check connections on display
communication and power cables.
System stuck in Fit Delta Exceeds Limit
restart for greater than 30 minutes
Refer to “Service” on page B-25 for
service information.
Not getting enough flow to the sample cell Check both the micro filter and mem-
brane separator for contamination.
Replace if necessary. Refer to
"Replacing the Membrane Separa-
tor" or “Replacing the Filter” on
page B-8.
Check if supply pressure is sufficient.
No reading on device connected to
current loop
Make sure that connected device can
accept a 4-20 mA signal. The analyzer
is set to source current. Refer to
“Changing the 4-20 mA Current
Loop Mode” on page 3-13.
Make sure the device is connected to
the correct terminals (see Table 3–1 on
page 3–13).
Check the open circuit voltage
(35-40 VDC) across the current loops
terminals (see Table 3–1 on
page 3–13).
Replace the current loop device with a
milliampere meter and look for current
between 4 mA and 20 mA. A voltmeter
connected across a 249 ohm resistor
can be used instead of the milliampere
meter; it should read between 1 and 5
volts.
Capture diagnostic data and send the
file to Endress+Hauser (see “To read
diagnostic data with HyperTermi-
nal” in the Description of Device
Parameters for this analyzer).
Table B-1 Potential instrument problems and their solutions (Continued)
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