Teledyne TIENet 350, Инструкция по установке и эксплуатации

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TIENet ® Model 350 Area Velocity Sensor
Section 2 Installation
2-11
Figure 2-11 Sensor Installed on a Spring Ring
Attaching the Sensor to the
Ring
Attach the 350 sensor to the ring either by using two 4-40x
3
/
8
countersink screws or by snapping the optional probe carrier to
the ring. This second method of attaching the sensor allows for
easy removal in case service is needed later.
CAUTION
Make sure the slots on the sensor carrier are completely
pressed into the tabs on the ring. This is particularly important
where there is any possibility of reverse flows, or where flows
are of high velocity. If the AV sensor is not fully pressed into the
mounting ring tabs, it might come loose in the stream, and
could possibly be damaged or lost.
Make sure the sensor cable is securely fastened along the
back (downstream) edge of the ring. Otherwise, the sensor
may provide
inaccurate level readings
under conditions of
high velocity.
To complete the sensor-spring ring assembly procedure, attach
the sensor cable to the downstream edge of the ring. Follow the
cable routing shown in Figure 2-11. Other routing may affect
measurement accuracy. The cable can create a stilling well down-
stream from the sensor, causing the level to read low. Use the
self-locking plastic ties supplied with the ring. Install the ring in
the pipe by compressing it. Press inward on both sides and slide
the ring into the pipe.
Route the sensor cable out of the stream and secure it in position
by placing the ties through the holes in the mounting ring and
then locking them around the cable, as shown in Figure 2-11.