Campbell TE525 Instrukcja Obsługi Pobierz pdf (Strona 19)

TE525 Tipping Bucket Rain Gage

9.2 Maintenance

The funnel and bucket mechanism must be kept clean. Routinely check for and

remove any foreign material, dust, insects, etc.

9.3 Calibration

A field calibration check is advised every 12 months.

Field Calibration Check:

1. Secure a metal can that will hold at least one quart of water.

2. Punch a very small hole in the bottom of the can.

3. Place the can in the top funnel of the rain gage and pour 16 fluid ounces (1

pint) of water into the can. (A 16 oz. soft drink bottle filled to within 2.5

inches of the top may be used for a rough field calibration. An exact

volume will allow for a more precise calibration.)

4. If it takes less than 45 minutes for this water to run out, the hole in the can

is too large.

5. The following number of tips should occur:

TE525, TE525MM 100 ± 3

TE525WS 57 ± 2

6. Adjusting screws are located on the bottom adjacent to the large center

drain hole. Adjust both screws the same number of turns. Rotation

clockwise increases the number of tips per 16 oz. of water; counter

clockwise rotation decreases the number of tips per 16 oz. of water. One

half turn of both screws causes a 2% to 3% change.

7. Check and re-level the rain gage lid.

Factory Calibration:

If factory calibration is required, contact Campbell Scientific to obtain an RMA

(see Warranty and Assistance at front of manual).

10. Attributions and References

Santoprene

is a registered trademark of Exxon Mobile Corporation.

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Campbell TE525 Instrukcja Obsługi Strona 19