Campbell CS475 Manual de usuario descargar pdf (Pagina 34)

CS475, CS476, and CS477 Radar Water Level Sensor

8.2 Diagnostics and Repair

The radar sensor is extremely reliable, but problems can occur during operation.

Most of these problems are caused by the following:

• Sensor

• Environmental conditions

• Power supply

• Signal processing

When you encounter a problem with the radar sensor, check the error messages

from the aM!, followed by the aD0! command to help evaluate the issue.

1. During the initial power up or resumption of supply voltage to the

sensor, some SDI-12 commands, such as the I command, will not

yield the expected responses.

2. A typical response to the aD0! command results in a response of

108003 where approximately 80 seconds is the required time to

complete the BIST (Built In Self Test) of the instrument. After power

up is complete, normal SDI-12 communication starts.

8.2.1 No Measured Value Available — Error E013

If you are unable to find a measured value, check the following:

• Sensor in boot phase

• Update the Start False Echo Learn (aXSFEL).

8.2.2 No Measured Value Available — Error E041, E042, E043

If you have a hardware error or have defective electronics, try cycling the power to

the sensor. If the sensor recovers, no further steps are required. If the sensor does

not recover, do one of the following:

• Exchange the electronics module (see Section 8.2.2.1, Exchange Electronics

Module)

• Return the equipment for repair (an RMA number is required)

8.2.2.1 Exchange Electronics Module

If you do not have an electronics module onsite, order one from Campbell

Scientific.

NOTES

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 47 48

Sin comentarios

Campbell CS475 Manual de usuario Pagina 34