Campbell-scientific CS431 Submersible Pressure Transducer Manual do Utilizador descarregar pdf (Página 14)

CS431 Submersible Pressure Transducer

5.2.1 Example Edlog Programs

The following two examples are for the CR10X but other Edlog dataloggers

are programmed similarly.

5.2.1.1 Example CR10X P

ROGRAM – STANDARD – One Sensor

In the following example

Vr = differential voltage at diff channel 1

Vo = differential voltage at diff channel 2

L = pressure measurement in nominal units

P = pressure measurement in psi units using provided calibration values m

and b from calibration data sheet for the specific sensor being used

T = temperature measurement in degrees C

1: Ex-Del-Diff (P8)

1: 2 Reps

2: 3 25 mV Slow Range

3: 1 DIFF Channel

4: 1 Excite all reps w/Exchan 1

5: 1 Delay (units 0.01 sec)

6: 800 mV Excitation

7: 1 Loc [ Vr ]

8: 1.0 Mult

9: 0.0 Offset

; Calculate L factor

L=100*(Vo/Vr)

; Measure Temperature

2: Temp (107) (P11)

1: 1 Reps

2: 5 SE Channel

3: 2 Excite all reps w/E2

4: 4 Loc [ T ]

5: 1.0 Mult

6: 0.0 Offset

; L can be translated to a pressure measurement using the following formula,

; where m and b (in psi) are determined from device calibration sheet.

P=(m)*L + (b)

; Now data can be further processed or written to data storage memory.

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Campbell-scientific CS431 Submersible Pressure Transducer Manual do Utilizador Página 14