Vaisala WMS302 Betriebsanweisung PDF herunterladen (Seite 178)

User's Guide ______________________________________________________________________

176 __________________________________________________________________M210630EN-B

2. Check that the gauge is still level. It is surprisingly easy for an

apparently immovable gauge to become tilted as a result of small

ground movements, vandalism, or just an inquisitive finger.

3. Clean the spoon from dust and dirt once or twice a year to ensure

precise measuring.

Periodic Maintenance of QMR102

To ensure reliable and accurate measurements, Vaisala recommends

that the following checks be carried out at each visit to the rain gauge.

1. Inspect the funnel and filter for any damage or blockage. At certain

times of the year leaves may have accumulated in the funnel, dirt

and dust can also block the filter preventing or reducing the flow

rate to a slow drip into the buckets beneath. The leaves can easily

be removed from the funnel and the filter can be cleaned by

removing the end cap from the filter tube. Remove the filter

material carefully, clean and replace the filter and cap.

2. Check that the gauge is still level. It is surprisingly easy for an

apparently immovable gauge to become tilted as a result of small

ground movements, vandalism or just an inquisitive finger.

3. Remove and clean any dirt from the bucket.

4. There will be times when the rain gauge will not log or will be

disconnected from the logger. In such cases, it is a good idea to

check the balance arm of the bucket for stiffness. The easiest way

to do this in the field is to try to balance the bucket in its center

position. It should be very difficult, if not impossible, to achieve

this. If the bucket balances easily then examine the bucket closely

for any dirt or wear on the pivot pin and bucket tubes.

NOTE

If the gauge is connected to the AWS logger and the logger is

operating, avoid tipping the cup assembly.

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Vaisala WMS302 Betriebsanweisung Seite 178