Campbell-scientific Wireless Sensor Network (CWB100, CWS220, and CWS90 Manuel d'utilisateur télécharger pdf (Page 48)

Wireless Sensor Network

Prior to sensor discovery, the numeric monitor will display the name of the

public variable specified in the CWB100 instruction with NAN as the

output. Once the sensor has been discovered, NAN will change to

Undefined.

To view the user-specified Field Names in the numeric monitor, delete the

original Public variables from the display with the Delete All button and

add the Public table again with the Add button. Now the correct Field

Names will be displayed for each sensor with their real-time values.

7. Maintenance

Minimal maintenance is required for the CWS900, CWS220, and CWS655

wireless sensors. If batteries are solar charged, the solar cell battery lid needs

to be periodically cleaned with water to remove dust and debris. Alkaline

batteries need to be replaced periodically as needed. It is good practice to store

the battery voltage of individual sensors in the datalogger to determine when

the sensor power supply needs attention.

It is important to keep the lens and view of the CWS200 clean. Otherwise the

sensor will be measuring the temperature of the obstruction instead of the

surface of interest. Clean the lens gently with a moistened cotton swab.

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Campbell-scientific Wireless Sensor Network (CWB100, CWS220, and CWS90 Manuel d'utilisateur Page 48