Detcon P-1000 - Manual (Page 24)

P-1000
Portable Model 1000 H2S Analyzer Rev. 1.0 Page 20 of 24
Memory Fault
If new data points cannot successfully be retrieved from memory, the display will indicate: “Memory Fault”.
Comm Error
If the ISM and UTM are not communicating properly, then the UTM will report “Comm Error”.
6.0 Exchanging ISM Modules
A key feature of the UniTox™ product is its complete universality (exchangeability) between any combination
of ISM and UTM. The ISM carries all necessary identification and parameter data stored in permanent
memory, which allows any ISM to instantly begin seamless operation with any UTM.
6.1 Physical Exchange
To remove an ISM, disconnect the swag lock tube fittings at the flow adapter and unthread the flow through
chamber. Twist the retaining collar on the ISM in a counter clockwise direction until the threads are cleared.
The ISM should be pulled straight down and out. To reinstall the ISM, align the gold pins with the receptacle
and press the ISM in until completely seated. Move the retaining collar up and thread clockwise until snug.
Reconnect the flow through chamber, and re-attach the swag lock tube fittings.
NOTE: Remember to twist the retaining collar tight after successful ISM/UTM communication is established.
The collar should tighten snugly up to the mating surface in order to create a watertight seal. Never grab the
ISM main housing and attempt to twist. This may damage the gold pin connections.
6.2 Establishing Communication
The UTM will display "Missing Sensor" during time when the ISM is not connected. When an ISM is
disconnected from a UTM, the user must wait approximately 7 seconds before another ISM can be plugged
into the UTM. This 7-second period is the time required by the UTM to reach the "ready-to-receive" state.
After plugging an ISM into the UTM, within 1-3 seconds, the ISM identification/parameter information will
be displayed and at the conclusion of the data string, a "Returning to Normal Operation" message will be
shown. If for some reason the ISM identification/parameter information does not come up after 10 seconds,
then unplug the ISM and repeat the process again after 10 seconds.
7.0 Trouble Shooting Guide
7.1 UniTox™ Error Messages
Error messages from the UniTox™ Sensor are displayed on the LCD in the P-1000 Analyzer and are not
forwarded to the Data Logger or a connected PC/Laptop.
7.1.1 "Missing Sensor" Message
Probable Cause: ISM not being registered by UTM.
1. Reinstall ISM after waiting 10 seconds.
2. Re-power UniTox sensor.
7.1.2 "Comm Error" Message
Probable Causes: Faulty wiring/connection, UTM or ISM microprocessor failure.