Campbell KH20 Manuel d'utilisateur télécharger pdf (Page 12)

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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