Campbell Scientific CS105/CS105MD Barometric Pressure Sensor - Manual (Page 13)

CS105/CS105MD Barometric Pressure Sensor
-Input Locations-
1 P_mb
*
Proper entries will vary with program and datalogger channel, and input location assignments.
** On the 21X use the 5000 mV slow range.
Example 4. 21X Program for Measuring the CS105 Every Execution Interval Using an
Excitation Channel to Turn the CS105 On and Off.
;{21X}
;
*Table 1 Program
01: 2
Execution Interval (seconds)
01: Excite Delay Volt (SE) (P4)
1: 1
Reps
2: 5 SE Channel
4: 1* Excite all reps w/Exchan 1
5: 100 Delay (units 0.01 sec)
6: 5000 mV Excitation
7: 1* Loc [ P_mb ]
8: .184 Mult
9: 600 Offset
02: If time is (P92)
1: 0
Minutes into a
2: 30 Minute Interval
3: 10 Set Output Flag High
03: Real Time (P77)
1: 0110
Day,Hour/Minute
04: Average (P71)
1: 1
Reps
2: 1* Loc [ P_mb ]
-Input Locations-
1 P_mb
* Proper entries will vary with program and datalogger channel, and input location assignments.
5. Long Lead Lengths
There is a 0.06 mV/foot voltage drop in the CS105 signal leads. This voltage
drop, in long lead lengths, will raise the barometric reading by approximately
1.1 mb per 100 feet.
For lead lengths greater than 20 feet, use the differential instruction
(Instruction 2) to measure the CS105.
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