Maintenance & Troubleshooting
Hardware Installation and Maintenance Manual B
–27
Table B-1 Potential instrument problems and their solutions (Continued)
Service Contact
For Service, refer to our website for the list of local sales channels in your area
(https://www.spectrasensors.com/contact).
Service repair order
If returning the analyzer or components is required, obtain a Service Repair
Order
(SRO) Number from Service before returning to the factory. Service
can determine whether the analyzer can be serviced on site or should be
returned to the factory. All returns should be shipped to:
SpectraSensors, Inc.
An Endress+Hauser Company
11027 Arrow Route
Rancho Cucamonga, CA 91730
United States
Symptom Response
Reading goes to “0” If 4-20 mA Alarm Action is set to 1,
look on display for an error message.
Refer to “To change parameters in
Mode 2”, then “4-20mA Alarm
Action” in the firmware operations
chapter of the Firmware manual.
Gas concentration is equal to zero.
Reading goes to full scale
If 4-20 mA Alarm Action is set to 2,
look on display for an error message.
Refer to “To change parameters in
Mode 2”, then “4-20mA Alarm
Action” in the firmware operations
chapter of the Firmware manual.
Gas concentration is greater than or
equal to full scale value.
Serial output is displaying garbled or no
data
Make sure the computer COM port is
set for 9600 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 ohm meter.
Make sure to select the correct COM
port into which the cable is plugged.
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