Teledyne TIENet 310 Ex, Инструкция по установке и эксплуатации

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TIENet® Model 310 Ex Ultrasonic Level Sensor
Section 2 Installation and Setup for Signature
2-7
If you intend to measure flow by some other means, such as a
gravity flow equation (Manning) or by calibrating a section of the
flow channel, you must locate the measuring point based on the
hydraulic characteristics of the channel, as well as the
level-to-flow conversion method.
In most open channel installations where the level may exceed
one-half of full pipe, mount the sensor as near as possible to the
midpoint between the entrance and exit to measure over the
least turbulent flow.
2.3.1 Dead Band Mount the sensor as close as possible to one foot (0.3 m) above
maximum expected level. The sensor cannot measure within the
foot of space directly below it, called the
dead band .
2.3.2 Submersion and
Fouling
Fouling by grease or solids can cause the sensor to malfunction.
The sensor is sealed, so unless it was exposed to corrosive sub-
stances, temporary accidental submersion should not harm it.
Upon retrieval, ensure that the sensor’s surface is clean. Clean
the bottom surface very gently with running water and a soft
cloth.
2.3.3 Mounting Options The 310 Ex sensor can be mounted over the flow stream in
various ways, depending on which method best fits the appli-
cation.
Optional equipment is available from Teledyne Isco for wall,
floor, suspension, and horizontal mounting (see Section 1.5
Accessories ). The sensor has a
3
/
4
" NPT male pipe thread with a
conduit lock nut to connect it to a mounting bracket or cable
stiffener. The sensor cable can be routed through user-provided
conduit back to the Signature Flow Meter.
Regardless of the mounting method you select, always place the
sensor over the center of the stream, and always use a circular
bubble level for vertical alignment.