Equipment and Calibration

View History

Equipment Entry

Instrument:Precipitation
Manufacture:Texas Electronics
Model No:TR-525M
Serial No:50229-112
Tag No:
Acquisition Date:2012-03-12
Project:DWR-Wetland
Location on 2021-10-21:East End,
Notes: 0.1mm tip, 9.6 inch orifice

Documents

Calibration: cal_TexasElec_TR-525M_sn50229-112_20111215.pdf
PackingSlip: ps_Campbell_20120312.pdf

History

Rec No.DateLoc FromTitleLoc ToNotes
5540 2021-10-21 East End Precipitation Tested East End Precipitation We dripped 240ml of water through the bucket using a peristaltic pump powered with a lithium battery. This should result in 50 tips in about 20 minutes. We got 54 tips and adjusted its set screws 1.5 turns CCW (1/2 turn of both screws is a 2-3% adjustment).
5021 2020-12-03 East End Precipitation Tested East End Precipitation Plugged tipping bucket into the calibration CR23x and dripped 475ml of water through the bucket (1/2 of the bottle at a time) which should result in 100 tips. Got 110 tips. Did not adjust - will retest with better water metering system.
4979 2020-11-19 East End Precipitation Tested East End Precipitation After cleaning the tipping bucket we connected it to a CR23x and dripped 475ml of water through the bucket which should result in 100 tips. We got 104 tips and did not adjust it. Might test again.
4121 2019-10-22 East End Precipitation Calibration East End Precipitation After cleaning the tipping bucket we connected it to a CR23x and dripped 475ml of water through the bucket which should result in 100tips. We got 96 tips – we did not adjust it.
3749 2018-10-18 East End Precipitation Calibration East End Precipitation Got 94 of 100 tips - adjusted screws a total of 0.5 turns CW.

2018-10-28: Got 98 of 100 tips and adjusted set screws 0.5 turn CW.
2018-11-01: Got 93 of 100 tips - no adjustment and need to retest
2018-12-18: 98 of 100 tips - no adjustment.
1716 2015-01-20 Lab none Installed East End Precipitation Reinstalled after being removed when the scaffolding fell over. Still needs mounting on the boardwalk railing.
1701 2015-01-05 East End Precipitation Removed Lab none Removed from the site due to the tower falling over in the wind on 2014-12-30. The tipping bucket was in the water and had a dent, but seems okay.
1166 2013-11-25 DWR Corn Precipitation Moved East End Precipitation The DWR Corn / Construction tower was decommissioned and rechristened at its new permanent location at the Twitchell East End Wetland
614 2012-05-21 Lab none Installed DWR Corn Installed at the edge of the field at the DWR Corn site