Campbell 229 Specifications download pdf (Page 30)

229 Heat Dissipation Matric Water Potential Sensor

FIGURE 6-4. Datalogger and Peripheral Connections for 229 Calibration

7. Maintenance

The 229 does not require maintenance after it is installed in the soil. The

datalogger, current excitation module, and multiplexer, if used, should be kept

in a weatherproof enclosure. Periodic replacement of the desiccant in the

enclosure is required to keep the electronics dry and free of corrosion.

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Campbell 229 Specifications Page 30