Oct 17. At S15 soil site 12:50 EDT. Water depth about 6". I believe the TP01 at this site is SN:200241.
ID:7 type: TP01 SN:200241 BD:7 I2C:2e TIMERS (sec): SLEEP: 900 HEAT: 180
calibration coefficients:
R = 1.620000E+1 E = 1.415000E-4 L = 6.000000E-2
board calibration:
GAIN:1 (heater) A0 = 1.999278E+0 A1 = 1.278517E+5 A2 = 9.991097E-1 A3 = 3.701623E-7 A4 = -3.788151E-11
GAIN:8 (sensor) A0 = 2.504106E-1 A1 = 1.278132E+5 A2 = 9.991050E-1 A3 = 3.703467E-7 A4 = -3.769054E-11
The following measurements were taken at 12:55, 13,10 and 13:25:
7 1212182 376 0 139 1663 569
7 1212575 376 0 139 1640 569
7 1211994 376 0 139 1635 568
At S1 soil site: 14:52 EDT. Water depth about 1-2 inches. Note that the coefficients are for SN:200241. I'm not sure what TP01 SN is at this site
ID:7 type: TP01 SN:200241 BD:7 I2C:2e TIMERS (sec): SLEEP: 900 HEAT: 180
calibration coefficients:
R = 1.620000E+1 E = 1.415000E-4 L = 6.000000E-2
board calibration:
GAIN:1 (heater) A0 = 1.999278E+0 A1 = 1.278517E+5 A2 = 9.991097E-1 A3 = 3.701623E-7 A4 = -3.788151E-11
GAIN:8 (sensor) A0 = 2.504106E-1 A1 = 1.278132E+5 A2 = 9.991050E-1 A3 = 3.703467E-7 A4 = -3.769054E-11
Power clip fell off at 14:59. Second measurement 15:02, third 15:17
7 1233700 313 0 115 2003 707
7 1233712 313 0 115 2180 707
7 1233478 313 0 115 2157 707
From the above measurements I get the following values:
| site | Vheat, V | Vpile.on, uV | Vpile.off, uV | Vpile.37%, uV | Tau63, s | Lambda, W/(m*K) | |
|---|---|---|---|---|---|---|---|
| s15 | 1.212 | 376 | 0 | 139 | 16.5 | 0.569 | |
| s1 | 1.233 | 313 | 0 | 115 | 21.1 | 0.707 | Incorrect coefficients? |
1 Comment
Steve Oncley
Oct 17, 2016GREAT! Thanks guys!...Steve
Yes, s1 would have used S/N 200591, for which R=16.7, E=140e-6. This means that Lambda should be 0.679, rather than 0.707. So, we can compute the rest of the values:
These measurements, along with the gravimetric measurements, confirm that our VERTEX staff have walked on water (in addition to through water) while working on this project...