Teledyne TIENet 310 Ex, Инструкция по установке и эксплуатации

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TIENet® Model 310 Ex Ultrasonic Level Sensor
Section 1 Introduction
1-2
This non-contact measurement method reduces the frequency of
maintenance, and is ideal for applications where the flow may
contain chemicals, grease, silt, or suspended solids.
1.2 310 Ex Sensor Design
The ultrasonic level sensor consists of a housing with a single
transducer that is both pulse transmitter and echo receiver. A
temperature sensor within the housing measures the ambient
temperature, and a microprocessor automatically compensates
for speed-of-sound changes due to any changes in air temper-
ature.
The 310 Ex is available with a 10m, 23m, and special order to
150m or less cable lengths with or without connectors. For
greater distances, external connection via conduit, and con-
nection of additional TIENet devices, the TIENet Expansion Box
is available. Bulk TIENet cable may also be used for greater dis-
tances.
Figure 1-2 310 Ex Ultrasonic TIENet Sensor with
unterminated leads (l) or TIENet plug (r)
1.3 Operation
The sensor emits multiple ultrasonic pulses per second. Between
pulses, the transducer switches from transmitter to receiver.
When the transducer receives the echo from the water’s surface,
the sound energy is converted into an electrical signal. The
signal is then amplified and processed by the Signature flow
meter into an “echo-received” signal. The time between the trans-
mitted pulse and the echo-received signal is proportional to the
distance between the transducer and the liquid surface. This dis-
tance in turn determines the liquid level used to calculate flow.