Difference between revisions of "TPS"
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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. | 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: | + | ====Testing goals:==== |
See that accumulated precipitation is consistent between drip sessions. | 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 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 syringe with known volume | ||
# A water source | # A water source | ||
| − | Procedure: | + | ====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. | |
<pre> | <pre> | ||
/R Reset precip total? (Y/N): Y | /R Reset precip total? (Y/N): Y | ||
Total reset to zero. | Total reset to zero. | ||
</pre> | </pre> | ||
| − | + | * Put the sensor in automatic output mode by typing ''''/L<Enter>'''' followed by the output interval rate in seconds ''''60<Enter>'''' | |
| − | 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). | + | * 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: | Some results from the Barrow TPS 4/14/2009: | ||
<pre> | <pre> | ||
Revision as of 08:59, 14 April 2009
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 10 0.9
