A-1
Appendix A. Basic Weather Station
Program
The CR200X Series Datalogger, which is part of your Basic Weather Station, is pre-loaded
with an appropriate program, ready for immediate use. A backup copy of this program is
supplied on CD.
This Appendix gives details of the ‘standard’ program, along with guidance on how to modify
it to suit an alternative set of sensors or measurements.
A.1 Standard Program
The basic program supplied with the Basic Weather Station covers the standard
sensors – the 03002-5 Wind Sentry measuring Wind Direction and Wind Speed,
and the CS215 measuring Temperature and Relative Humidity.
The program also includes instructions for the optional ARG100 Raingauge,
CS100 Barometric Pressure Sensor, and CS300. If those sensors are not fitted
then the values should be disregarded.
The CS300 is required for ETo calculations.
The program executes and takes measurements every 10 seconds, calculating
statistics based on that sample rate.
A.2 Wiring of Sensors
The program within the logger relies on the sensors being wired to the correct
locations. If the program is modified in any way then the program generator will
output a new wiring diagram. The program that the BWS-200 is pre-loaded with
requires the following wiring:
CS215 Temperature & Relative Humidity Sensor
B: Red
C1/SDI-12: Green
G: White
G: Black
G: Clear
03002-5 “Wind Sentry” Wind Speed & Direction Sensor
EX1: Blue
G: Screen
G: Black
P_LL: Red
SE1: Green
Ground: White
ARG100 Rain Gauge (Optional)
G: Clear
P_SW: Black
