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Campbell Scientific KH20 Krypton Hygrometer User Manual

Page 12

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KH20 Krypton Hygrometer


'*** Variables ***
Public panel_temp
Public batt_volt
Public kh(2)
Public rho_w
Alias kh(1) = kh_mV
Alias kh (2) = ln_kh
Units panel_temp = deg_C
Units batt_volt = volts
Units kh_mV = mV
Units ln_kh = ln_mV
Units rho_w = g/m^3

'*** Data Output Tables ***
'Processed data
DataTable (stats,True,-1)
DataInterval

(0,OUTPUT_INTERVAL,Min,10)

Minimum

(1,batt_volt,FP2,False,False)

Average

(1,panel_temp,FP2,False)

Average

(2,kh(1),IEEE4,False)

EndTable

'Raw time-series data.
DataTable (ts_data,True,-1)
DataInterval

(0,SCAN_INTERVAL,mSec,100)

Sample

(1,kh_mV,IEEE4)

EndTable

'*** Program ***

BeginProg

Scan

(SCAN_INTERVAL,mSec,3,0)

'datalogger

panel

temperature.

PanelTemp

(panel_temp,250)


'Measure

battery

voltage.

Battery

(batt_volt)


'Measure

KH20.

VoltDiff

(kh_mV,1,mV5000,1,TRUE,200,250,1,0)

ln_kh = LOG(kh_mV)

rho_w = ln_kh/xkw


CallTable

stats

CallTable

ts_data


NextScan
EndProg

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