User Manual VS2k-UMB / VS20k-UMB
V 2.3 / 28.01.2020
16
Chapter 12 Possible failures
12 Possible failures
Description
Reason / Steps to resolve
The instrument always measures the
maximum visibility
- Transport protection is still in place
→ Remove protection caps
The device does not respond
- Check power supply
- Check interface connection
- wrong device ID
→ check ID
The device does not allow adjustment
- check if device is very dirty
„Calibration error 0“
during calibration with the UMB Config
Tool
Startup of the VS2k-UMB / VS20k-UMB not
finished. Waiting time between switching on /
resetting and start of the calibration must be at
least 90 s
13 Service and maintenance
In order to have the instrument work smoothly we suggest to regularly carry out the following
checks and maintenance jobs:
•
Check if the optics is dirty and cleanse it if necessary using a lintless cloth, possibly
with alcohol or demineralised water
•
Check cables and housing for damages and have them changed if necessary
•
Recalibrate the sensor in the recommended interval. Make sure to take account of
the environmental preconditions for a recalibration.
During maintenance works, the instrument has to be disconnected from the power supply.
Service and maintenance jobs which require the instrument to be opened must only be
carried out by trained specialist personnel.
