TPS
Revision as of 11:11, 14 April 2009 by imported>Bob (→Testing goals:)
TPS is short for Total Precipitation Sensor. This page is the result of a few notes Bob put together while testing out one of the ARM TPS's from Barrow.
Testing goals:
See that accumulated precipitation is consistent between drip sessions.
Supplies
- A computer with a serial port. Choose a computer program or set up that allows received data to be redirected from the port to a file.
- A syringe with known volume
- A water source
Procedure:
- When the current precipitation rate is zero before any liquid has been poured on the sensor type '/R<Enter>' to reset the accumulated precipitation total.
/R Reset precip total? (Y/N): Y Total reset to zero.
- Put the sensor in automatic output mode by typing '/L<Enter>' followed by the output interval rate in seconds '60<Enter>'
- Add water. Be careful when sprinkling water on the sensor to keep all water in the center circle and be careful that the syringe doesn't squirt extra water out on its own (easy to do towards the end of the squirting operation).
Results from a Barrow TPS
Some results from the Barrow TPS 4/14/2009:
Water Added Accumulation miliLiters milimeters of water 6 0.55 * an air bubble in this one 10 0.9 6 0.57
Here's what the rate looks like for example (adding all the water, 6mL, to the sensor in two doses, not letting the sensor become dry):
0 1 1239737100 0 0 0 23.7 32.5 00.0*0743 1.0 1 1239737160 0 1.94 0.01 23.7 32.5 00.0*EEF7 2.0 1 1239737220 0 1.02 0.03 23.7 32.5 00.0*51F0 3.0 1 1239737280 0 0.92 0.05 23.7 32.5 00.0*5A17 4.0 1 1239737340 0 0.95 0.07 23.7 32.6 00.0*C097 5.0 1 1239737400 0 1.01 0.08 23.7 32.6 00.0*82F7 6.0 1 1239737460 0 0.99 0.1 23.7 32.6 00.0*D5AC 7.0 1 1239737520 0 1.02 0.11 23.7 32.6 00.0*A321 8.0 1 1239737580 0 1.06 0.13 23.7 32.6 00.0*826C 9.0 1 1239737640 0 1.05 0.15 23.7 32.6 00.0*12D7 10.0 1 1239737700 0 2.15 0.18 23.7 32.6 00.0*4772 11.0 1 1239737760 0 1.02 0.2 23.7 32.7 00.0*8244 12.0 1 1239737820 0 0.98 0.22 23.7 32.7 00.0*785E 13.0 1 1239737880 0 1.02 0.24 23.6 32.7 00.0*A244 14.0 1 1239737940 0 1.02 0.25 23.6 32.7 00.0*03CB 15.0 1 1239738000 0 1.01 0.27 23.6 32.7 00.0*8300 16.0 1 1239738060 0 1 0.29 23.6 32.7 00.0*E492 17.0 1 1239738120 0 1.04 0.3 23.5 32.7 00.0*83B1 18.0 1 1239738180 0 1.07 0.32 23.5 32.7 00.0*EE03 19.0 1 1239738240 0 1.05 0.34 23.5 32.7 00.0*FC46 20.0 1 1239738300 0 1.05 0.36 23.5 32.7 00.0*CED0 21.0 1 1239738360 0 1.06 0.37 23.5 32.7 00.0*FB8E 22.0 1 1239738420 0 1.05 0.39 23.5 32.8 00.0*6655 23.0 1 1239738480 0 1.07 0.41 23.5 32.8 00.0*278F 24.0 1 1239738540 0 1.08 0.43 23.5 32.8 00.0*D9F0 25.0 1 1239738600 0 1.14 0.45 23.5 32.8 00.0*05A1 26.0 1 1239738660 0 1.15 0.47 23.5 32.8 00.0*31F0 27.0 1 1239738720 0 1.16 0.48 23.5 32.8 00.0*6BF5 28.0 1 1239738780 0 1.2 0.5 23.5 32.8 00.0*E95F 29.0 1 1239738840 0 1.18 0.52 23.5 32.8 00.0*D140 30.0 1 1239738900 0 1.11 0.54 23.5 32.8 00.0*0796 31.0 1 1239738960 0 0.43 0.56 23.5 32.8 00.0*A4CE 32.0 1 1239739020 0 0.09 0.56 23.5 32.8 00.0*A325 33.0 1 1239739080 0 0.12 0.56 23.5 32.8 00.0*A1CA 34.0 1 1239739140 0 0.1 0.56 23.5 32.8 00.0*B9EB 35.0 1 1239739200 0 0.08 0.57 23.5 32.8 00.0*9BF5 36.0 1 1239739260 0 0 0.57 23.5 32.8 00.0*C204 37.0 1 1239739320 0 0 0.57 23.5 32.7 00.0*B733
