Campbell Scientific RDP500 Remote Data Platform - Manual (Page 29)

Appendix A. CRBasic Program for
Version 18
'CR1000 Series Datalogger
'FISCHER & PORTER/BELFORT WEIGHING RAINGAUGE RETROFIT.
'VERSION: RDP500_V18.CR1
'Note: The PRT is not needed to achieve the specification, however it is included in this
' system in an effort to create a sensor-temperature dataset that can be analized by
' any questioning party.
'Change Log:
' 2008-08-08
' Program released for manual
' 2010-04-20
' Changed data record interval from 5 min to 15 min.
' Added rounding of precip to 1/100th of inch
' Expanded information available through keypad display
' Added PreserveVariables program modifier
'------------------------------------------------------------------------------------
'Wiring Setup.
'S shape load cell INTERFACE SSM-AJ-100
'Red +
--- V_Ex1
'Black - --- V_G
'Green Sig + --- 1H
'White Sig - --- 1L
'Shield ---
V_G
'PRT
'Red --- TIM_G
'ReD --- TIM_H
'TIM
'H ---
7H
'L --- 7L
'G --- V_G
'Black --- V_Ex2
PreserveVariables
'Declare Public Variables
Public PTemp_C 'degrees. Temperature of datalogger wiring panel
Public PTemp_F 'degrees. Temperature of datalogger wiring panel
Public batt_volt 'Volts. external power supply voltage
Public PRT_raw
'millivolts. Raw mV reading from PRT
Public PRT_C 'deg C. PRT temp in Celcius
Public PRT_F 'deg F. PRT temp in Fahrenheit
Public LC_mV
'millivolts. Raw mV reading from the load sell
Public LC_mV_Avg 'millivolts. Averaged raw mV reading from the load cell
Public Lc_mV_Ofst 'millivolts. Load cell mV offset with no load (TARE)
Public LC_mV_Diff 'millivolts. Absolute difference between LC_mV_Avg and LC_mV
Public mVtoGram 'grams/millivolts. Conversion factor
Public LC_gr 'grams. weight applied to load cell
A-1