Campbell 012 Operator's Manual

Campbell 012 Operator's Manual Manual pdf 27 page image

3-1SECTION 3. PROGRAMMINGThe CR10 Measurement and Control Module begins executing the program stored in its PROM whenpower is connected to the weather station. This "program-on-power-up" function is not found in standardCR10s where users enter their own programs. Users desiring additional sensors or outputs differentfrom this "standard" program may create their own program and overwrite the existing one.The resident program listed in Appendix A measures wind speed, wind direction, air temperature,relative humidity, solar radiation, and rain every 10 seconds. Soil temperature is measured only ifenabled by the user; Flag 1 = 1 (Section 2.9).The program stores hourly, daily and conditional data as shown below.TABLE 3-1. 012 Standard Program OutputsHourly Output 24 Hour Output01: Array ID 129 01: Array ID 13902: Day 02: Day03: Hour, Minute 03: Hour, Minute04: Avg. Temperature (F) 04: Avg. Temperature (F)05: Instantaneous RH (%) 05: Maximum Air Temperature (F)06: Avg. Solar Radiation (kW/m 2) 06: Minimum Air Temperature (F)07: Avg. Wind Speed (mph) 07: Maximum Relative Humidity08: Wind Speed Weighted Avg. Dir. 08: Minimum Relative Humidity09: Standard Deviation of Wind Dir. 09: Avg. Solar Radiation (kW/m 2)optional (Flag 1 set high) 10: Maximum Wind Speed (mph)10: Soil Temperature (F) 11: Avg. Wind Speed (mph)12: Total Rain Fall (inches)Conditional Output 13: Maximum Internal Moisture Index14: Sample Battery Voltage1 Minute Rain Fall Intensity 15: Maximum CR10 Temperature (C)01: Array ID 124 16: Minimum CR10 Temperature (C)02: Hour, Minute optional (Flag 1 set high03: Rain Fall (inches) 17: Maximum Soil Temperature (F)18: Minimum Soil Temperature (F)Appendix A is a listing of the resident program.3.1 PROGRAMMING SENSORMEASUREMENTSThe instructions used to measure and convertsensor signals to the values displayed in InputMemory (*6 Mode) are discussed in thefollowing pages. The standard sensors areassigned fixed CR10 Input Channels andExcitation Ports. These and othermeasurement parameters used in the programare summarized in Table 3-2.