Maintenance, 1 desiccant – Campbell Scientific Q7_1-L REBS Net Radiometer User Manual
Page 7
Q-7.1 NET RADIOMETER
5
07:
Do (P86)
1:
1*
Call Subroutine 1*
08:
Else (P94)
;Apply the negative calibration and
;wind speed correction.
;
09:
Do (P86)
1:
2*
Call Subroutine 2*
10:
End (P95)
*Table 3 Subroutines
;Positive calibration and wind
;speed correction.
;
01:
Beginning of Subroutine (P85)
1:
1*
Subroutine 1
02:
Z=X*F (P37)
1:
1*
X Loc [ ws_m_s ]
2:
.2
F
3:
6*
Z Loc [ C ]
03:
Z=X*F (P37)
1:
6*
X Loc [ C ]
2:
.066
F
3:
4*
Z Loc [ A ]
04:
Z=X+F (P34)
1:
6*
X Loc [ C ]
2:
.066
F
3:
5*
Z Loc [ B ]
05:
Z=X/Y (P38)
1:
4*
X Loc [ A ]
2:
5*
Y Loc [ B ]
3:
7*
Z Loc [ Corr_Fact ]
06:
Z=Z+1 (P32)
1:
7*
Z Loc [ Corr_Fact ]
;Enter the positive multiplier (p.ppp).
;
07:
Z=X*F (P37)
1:
2*
X Loc [ Rn_mV ]
2:
p.ppp
F
3:
3*
Z Loc [ Rn_W_m2 ]
08:
Z=X*Y (P36)
1:
3*
X Loc [ Rn_W_m2 ]
2:
7*
Y Loc [ Corr_Fact ]
3:
3*
Z Loc [ Rn_W_m2 ]
09:
End (P95)
;Negative calibration and wind
;speed corrections
;
10:
Beginning of Subroutine (P85)
1:
2*
Subroutine 2*
11:
Z=X*F (P37)
1:
1*
X Loc [ ws_m_s ]
2:
.00174 F
3:
4*
Z Loc [ A ]
12:
Z=X+F (P34)
1:
4*
X Loc [ A ]
2:
.99755 F
3:
7*
Z Loc [ Corr_Fact ]
;Enter the negative multiplier (n.nnn).
;
13:
Z=X*F (P37)
1:
2*
X Loc [ Rn_mV ]
2:
n.nnn
F
3:
3*
Z Loc [ Rn_W_m2 ]
14:
Z=X*Y (P36)
1:
3*
X Loc [ Rn_W_m2 ]
2:
7*
Y Loc [ Corr_Fact ]
3:
3*
Z Loc [ Rn_W_m2 ]
15:
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.
4. MAINTENANCE
4.1 DESICCANT
The Q-7.1 is supplied with heavy duty
polyethylene windshields (approximately 0.25
mm thick); no pressurization is required.
Air spaces inside the windshields are
connected to a dryer filled with silica gel
(referred to as the desiccant tube) to prevent
internal condensation. The desiccant tube is
located in the support arm and is accessible by
removing the end plug and vinal cap.