Campbell Scientific TE525, TE525WS, and TE525MM Texas Electronics Rain Gages User Manual
Page 19
TE525 Tipping Bucket Rain Gage
(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
at front of manual).
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