Equipment and Calibration

View History

Equipment Entry

Instrument:Multiplexer
Manufacture:Campbell Sci.
Model No:AM25T
Serial No:6767
Tag No:
Acquisition Date:2012-03-12
Project:DWR-Wetland
Location on 2020-07-09:Loaned,
Notes:

Documents

PackingSlip: ps_Campbell_20120312.pdf

History

Rec No.DateLoc FromTitleLoc ToNotes
4592 2020-07-09 Loaned Disposed Disposed Given to Sabina of Hydrofocus. The DWR grant ended at the end of June 2020, and Bryan requested we hand off a tower to Hydrofocus.
4562 2020-07-09 Sherman Barn Multiplexer Thermocouples Removed Loaned none Removed from Sherman Barn with its decommissioning and given to Sabina of Hydrofocus. The DWR grant ended at the end of June 2020, and Bryan requested we hand off a tower to Hydrofocus.
3573 2018-07-11 Lab none Installed Sherman Barn Multiplexer Thermocouples Installed at Sherman Barn on the scaffolding frame in the southwest corner of the cow fence. This is the initial set up of the site.
3515 2018-06-13 Twitchell Alfalfa Multiplexer Thermocouple Removed Lab none Removed with Twitchell Alfalfa site decommissioning.
2223 2016-03-24 Twitchell Alfalfa Multiplexer Thermocouple Moved Twitchell Alfalfa Multiplexer Thermocouple Moved the AM25T from the data logger box at the tower to the soil CO2 data logger box. New SoilT TC profiles will go in out there.
1937 2014-06-05 Lab none Installed Twitchell Alfalfa Multiplexer Thermocouple Reinstalled at Alfalfa after being repaired by Campbell. Removed AM16/32 sn 1164
1331 2014-06-03 Factory Repair Lab none The mux was returned from Campbell where they repaired it:

The unit had a high current drain and would not read input channels properly. Replaced three ICS 4052 analog mux/demux. Calibrated PRT. The multiplexor was probably damaged by a large voltage surge.

Maybe lightening, need to make sure things are properly grounded.
1300 2014-05-16 Lab none Shipped Factory Sent to Campbell on RMA 20029 for a checkup and possible repair.
1299 2014-05-13 Twitchell Alfalfa Multiplexer Thermocouple Removed Lab none Removed from the Alfalfa tower. This multiplexor failed in the field over a couple of weeks. It was replaced with AM16/32 sn 1164
1014 2013-05-24 Lab none Installed Twitchell Alfalfa Multiplexer Thermocouple Installed in the box at the Alfalfa tower to collect data from soil sensors