ADS Environmental Services Model 3600 530002 A2 - Manual (Page 47)

4-14 ADS 3600 Flow Monitor O&M Manual
l Position the spreader assembly handle facing you. On the right-hand side of
the ring, begin to secure the velocity cable along the trailing edge of the ring in
a clockwise direction. Attach the sensor cables to the ring with cable ties that
are 4 in. (10 cm) long and 0.08 in.(2 mm) wide. Pull the ties until they are taut.
Continue this process until you reach the ultrasonic sensor. Cut off the excess
portion of the cable ties.
l Be careful to secure the velocity cable to the outside trailing edge of the ring to
prevent debris from accumulating around the cable.
Mounting a Pressure Depth Sensor
l Orient the ring so that the ultrasonic sensor is directly on top. If an ultrasonic
sensor is not being used, orient the ring so that the spreader assembly is
directly on top.
l Place the pressure depth sensor on the bottom of the ring with the front of the
sensor (the pointed end) facing upstream and away from the spreader
mechanism handle (downstream). If a velocity sensor is present, the pressure
sensor should be about 5 cm (2 in.) to the left or right of the velocity sensor.
l Point the dryer tube downward when installing (see the following figure).
Place the pressure depth sensor on the inside of the ring. The pressure sensor is
secured to the ring in the same manner as the velocity sensor.
ENVIRONMENTAL SERVICES, INC.
3600 MONITOR
AIR TUBE
DESSICANT
IN DRYER
CHAMBER
DRYER
TUBE
SENSOR CABLE
PRESSURE DEPTH SENSOR
AIR TUBE
ELECTRONICS
CROSS-SECTION
OF
PRESSURE DEPTH SENSOR CABLE
Dryer Tube and Air Tube as Incorporated into the Pressure Depth Sensor Cable
l Secure the pressure depth cable to the outside of the ring to prevent debris
from accumulating around the cable. The pressure depth cable sheathes two
components: the electrical cables required to operate the sensor and an air
tube that ventilates the sensor. If you tighten the cable ties too much, you will
pinch the air tube and cause incorrect pressure depth readings.
l Because of the air tube in the sensor's cable, be sure that the connector-end of
the sensor is not kinked, contains no moisture, and has a pressure dryer that is
attached and filled with active blue desiccant.