Manual
SECTION 4. TECHNICAL DETAILS
4-2
TABLE 4.2-1. Keller-PSI Calibration Report
Customer: Campbell Scientific Test Date: 07-06-92
Model No: 169-110-0051 Text Excitation .5 mA
Serial No: 93907 Test Temperatures: Room = 27ºC
Pressure Range: 0 to 15 PSIG Cold = 0ºC
Excitation: .5 mA
Output: 0-60 mV
Test BFSL ------- Run #1 ------- ------- Run #2 ------- ------- Run #3 -------
Pressure Rm Temp Rm Temp Error Rm Temp Error Cd Temp Error
PSIG Outputs Outputs %FSO Outputs %FSO Outputs %FSO
0.00 0.14 0.176 0.076 0.188 0.101 0.066 -0.006
3.00 9.55 9.519 -0.066 9.522 -0.060 9.449 -0.008
6.00 18.96 18.921 -0.083 18.916 -0.094 18.885 -0.006
9.00 28.37 28.358 -0.025 28.352 -0.038 28.350 -0.002
12.00 37.78 37.801 0.045 37.789 0.020 37.821 0.003
15.00 47.19 47.222 0.069 47.212 0.048 47.265 0.006
12.00 37.78 37.806 0.056 37.796 0.035 37.826 0.004
9.00 28.37 28.361 -0.019 28.356 -0.030 28.352 -0.001
6.00 18.96 18.926 -0.072 18.925 -0.074 18.888 -0.006
3.00 9.55 9.528 -0.047 9.528 -0.047 9.454 -0.008
0.00 0.14 0.189 0.103 0.189 0.103 0.073 -0.005
Maximum Static Error: 0.103 %FSO Maximum Thermal Error @ Cold: -.008 %FSO/C
Maximum Non-Repeatability: -0.26 %FSO
Electrical Termination: Black +Input
Red +Output
Green -Output
White -Input
With 3 wells or more on one PST, the first step
interval will be greater than 0.25 seconds (see
Section 4.4). The elapsed time will be offset by
the increased time required to execute the first
step interval. A change of the execution interval
to 0.5 seconds would result in the following:
Points per
Elapsed Time Interval
Interval
0 - 40 sec. 0.5 sec. 80
40 - 240 sec. 10 sec. 20
4 - 20 min. 1 min. 16
20 - 200 min. 4 min. 45
200 - 2000 min. 20 min. 90
2000 min. plus 120 min.
2 times the value in *4 location 13 (PST3) or 28
(PST8)
If the interval is changed, it must be a multiple
of 0.125 (1/8) seconds. If the execution interval
were changed to 1 second, the following rate of
data collection would result:
Points per
Elapsed Time Interval
Interval
0 - 80 sec. 1 sec. 80
80 - 480 sec. 20 sec. 20
8 - 40 min. 2 min. 16
40 - 400 min. 8 min. 45
400 - 4000 min. 40 min. 90
4000 min. plus 240 min.
NOTE: Never set the base interval greater
than 1 second.
4 times the value in *4 location 13 (PST3) or 28
(PST8)
4.4 DELTA SAMPLING
Time and water level are recorded only when
the water level changes by a user-specified
Delta threshold. When using Delta sampling,
each well in the test must have its own Delta
threshold value set in the *4 Table. The default