Place the temperature/RH sensor inside the shield.

Thread the “Protective Cap and Filter” onto the sensor.

Only touch the chip’s plastic housing during replacement. Set the old chip aside.Ĭaution: Do not touch the shiny metal part of the new RH chip with your fingers, as this will damage the chip and result in inaccurate RH measurements.

The RH chip is plugged into the sensor.

On the sensor, thread off the “Protective Cap and Filter,” as labeled in the diagram.

Gently pull the temperature/RH sensor out from inside the shield.

All of these probes contain a pn 9598 replacement RH chip that should be replaced once a year.

Reassemble the shield onto the temperature/RH sensor and crossarm by screwing in the two screws.Īn ET station may use an HMP50-ET, HMP60-ETS,or HMP60-ETR temperature/RH probe.

Clean the shield in a bucket of soapy water using a soft brush.

Allow the sensor to hang from the crossarm.

Remove the two screws that hold the shield to the bottom of the crossarm, and gently lower the assembly.

If the shield is very dirty, follow these steps:

Once every three months, clean the temperature/RH (radiation) shield using a soft, clean, damp cloth. #4 - Air Temperature and Relative Humidity (RH) Shield

Reinstall the funnel by sliding it down onto the white bucket.

Slide the funnel up and off the white bucket.

Once a week, inspect the rain gage funnel and clean it as needed. To acquire the necessary Returned Material Authorization (RMA), follow the steps on the Repair and Calibration page. You will need to remove the sensor and return it to Campbell Scientific for calibration. Once every five years, have the rain gage sensor (for example, the TE525-ET) calibrated. Recommended for You: To check your solar radiation measurements and see if your sensor needs calibration, read the “How to Check the Accuracy of Your Solar Radiation Measurements” blog article. To obtain an RMA, follow the steps on the Repair and Calibration page. For this calibration service, you will need to remove the sensor and send it to Campbell Scientific, which requires a Returned Material Authorization (RMA). Once every three years, have the solar radiation sensor calibrated. If necessary, adjust the sensor to ensure it is level. As needed, clean it using a soft, clean, damp cloth.

Once a month, inspect the solar radiation sensor (for example, the CS305-ETM). Based on general recommended intervals, this article highlights eight common components of your ET106 or ET107 evapotranspiration weather station that should be regularly maintained or calibrated. A weather station designed to calculate evapotranspiration (ET) for commercial agriculture and irrigation scheduling has a number of components that require maintenance and calibration. Like most machines, automated weather stations require regular maintenance to provide you with better performance and longer life expectancy.

Weather stations for commercial use