Campbell-scientific Q7_1-L REBS Net Radiometer Bedienungsanleitung PDF herunterladen (Seite 6)

Q-7.1 NET RADIOMETER

4

3.2 PROGRAMMING EXAMPLE WITH FIXED

WIND SPEED CORRECTION

The following CR10(X) program measures the

output of a Q-7.1. A static wind correction is

applied to each measurement.

Example 1. CR10(X) Program with the

Static Wind Speed Correction

;Measure the Q7.1.

;

01: Volt (Diff) (P2)***

1: 1 Reps

2: 24** ± 250 mV 60 Hz

Rejection Range

3: 1* DIFF Channel

4: 3* Loc [ Rn_W_m2 ]

5: 1 Mult

6: 0 Offset

02: IF (X<=>F) (P89)

1: 3* X Loc [ Rn_W_m2 ]

2: 3 >=

3: 0 F

4: 30 Then Do

;Enter the positive multiplier (p.ppp).

;

03: Z=X*F (P37)

1: 3* X Loc [ Rn_W_m2 ]

2:

p.ppp

F

3: 3* Z Loc [ Rn_W_m2 ]

04: Z=X*F (P37)

1: 3* X Loc [ Rn_W_m2 ]

2: 1.045 F

3: 3* Z Loc [ Rn_W_m2 ]

05: Else (P94)

;Enter the negative multiplier (n.nnn).

;

06: Z=X*F (P37)

1: 3* X Loc [ Rn_W_m2 ]

2:

n.nnn

F

3: 3* Z Loc [ Rn_W_m2 ]

07: End (P95)

* Proper entries will vary with program, and

datalogger channel and input location

assignments.

** On the 21X and CR7 use 500 mV input

range.

*** For a Single-Ended measurement use

Instruction 1.

3.3 PROGRAMMING EXAMPLE WITH DYNAMIC

WIND SPEED CORRECTION

The following CR10(X) program measures an

R. M. Young wind sentry anemometer model

03101 and a Q-7.1. The wind speed is used to

give a real-time wind correction to net

radiation. The wind speed must be measured

before the wind corrections are applied.

Example 2. CR10(X) Program with the

Dynamic Wind Speed Correction

;Measure the 03101 wind sentry.

;

01: Pulse (P3)

1: 1 Reps

2: 1* Pulse Channel 1

3: 21 Low Level AC, Output Hz

4: 1* Loc [ ws_m_s ]

5: .75 Mult

6: .2 Offset

02: IF (X<=>F) (P89)

1: 1* X Loc [ ws_m_s ]

2: 1 =

3: .2 F

4: 30 Then Do

03: Z=F (P30)

1: 0 F

2: 0 Exponent of 10

3: 1* Z Loc [ ws_m_s ]

04: End (P95)

;Measure the Q7.1.

;

05: Volt (Diff) (P2)***

1: 1 Reps

2: 24** ± 250 mV 60 Hz

Rejection Range

3: 1* DIFF Channel

4: 2* Loc [ Rn_mV ]

5: 1 Mult

6: 0 Offset

06: IF (X<=>F) (P89)

1: 2* X Loc [ Rn_mV ]

2: 3 >=

3: 0 F

4: 30 Then Do

;Apply the positive calibration and

;wind speed correction.

;

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