Casella CEL Airborne particulate monitoring system - Manual (Page 16)

HB3256-03 Page 14
System wiring.
The basic system wiring is simple providing the manual is studied carefully and care is taken.
Wiring should only be carried out by qualified personnel who are familiar with the procedures
and precautions necessary when wiring such electronic devices.
Warning:
INCORRECT WIRING MAY RESULT IN DAMAGE TO THE SYSTEMS OR
SENSORS. SUCH DAMAGE WILL BE THE CUSTOMERS RESPONSIBILITY AND
IS EXCLUDED FROM THE CONDITIONS OF WARRANTY.
Wind Speed and Direction Sensor Wiring.
The sensors are generally fitted to a cross arm assembly and interconnected to the APM950
system via a small junction box.
Wiring between wind sensors, junction box and APM system is detailed below.
Sensor
connection Wire colour from
sensor to junction
box Wire colour
from junction
box to APM
system APM system
connection
Supply +ve RED RED 12 volt supply
(on terminal strip)
Supply 0v BLACK/WHITE BLUE 0 volt reference
(on terminal strip)
Windspeed
Signal
GREEN GREEN COUNTER 1 input
Wind direction
Signal
GREEN YELLOW CH2 + input
Screens Yellow/Green Yellow/Green Chassis earth points