Servicing the Weather Station

 

Servicing the Weather Station

Autumn is definitely here—the heating came on this morning as the temperature dipped. After clearing the guttering to prepare for the heavier rains, I noticed our Davis weather station’s rain gauge was looking suspicious. The readings had been off for a few days, and when I climbed up to take a look, the gauge was full of water and clearly blocked.

My son and I dismantled the unit, brought it down, and gave it a proper clean. The filter had done its best, but the small drainage hole was clogged. After a careful wash-out and reassembly, the station was back in place—just in time to record a passing thunderstorm, which gave it a thorough test of accuracy!

✅ Key Areas to Check

1. Rain Gauge

• Clear leaves, moss, and dirt from funnels and filters.

• Make sure the drainage hole isn’t blocked—standing water gives false low readings.

• Test after cleaning with a small measured pour of water to confirm it tips correctly.

2. Temperature & Humidity Sensors

• Check the radiation shield (radiator) is clean and not blocked by spiders or cobwebs.

• Ensure airflow around the shield—no debris or overgrown plants nearby.

• Wipe the shield gently with a damp cloth; avoid harsh cleaners.

3. Anemometer & Wind Vane

• Confirm they spin freely and aren’t catching on dirt, twigs, or bird droppings.

• Lightly check for play in the bearings; stiff movement means poor readings.

4. Batteries & Power Supply

• Replace or recharge batteries before the cold weather reduces capacity.

• If solar-powered, check panels are clean and facing the right direction.

• Inspect wiring and connectors for corrosion.

5. General Maintenance

• Tighten loose mounts or poles before winter storms test them.

• Make sure your data logger or Wi-Fi unit is still connected and recording properly.

• Run a quick calibration check by comparing readings with a reliable nearby source (e.g., local Met Office station).

It’s a good reminder that all scientific equipment needs regular servicing to stay reliable. Whether it’s checking sensors, unclogging filters, or simply replacing batteries, maintenance makes sure the data you collect is dependable.