CS230/CS231 Temperature Profiler
12
9. Maintenance, Calibration, and Troubleshooting
The CS230/CS231 probe requires no maintenance nor calibration. The
following are symptoms and possible corrections.
Symptom: –9999 or NAN for temperature
1. Verify the green wire is connected to the control port specified by the
SDI12 measurement instruction.
2. Verify the red power wire is connected to a 12V terminal; check the
voltage with a digital volt meter. If a switched 12V terminal is used,
temporarily connect the red wire to a 12V terminal (non-switched) for test
purposes.
Symptom: Sensor won’t respond to command
1. Expected address not used or has been changed.
a. Confirm all addresses in use with the
aI!
command to determine the
individual addresses of each temperature sensor.
2. Expected sensor address has been to match another sensor address already
in use.
a. When readdressing temperature sensors, you must avoid giving
multiple sensors the same address. If this does occur, you will no
longer be able to communicate with these sensors. Use the
aA{!
command, where
a
is the affected address. This will reset the affected
sensors to their factory configured address value. For example, if two
sensors have address 2, sending
2A{!
will reset both sensors to the
original addresses.
