Siemens SITRANS 7ML1100, Краткое руководство по эксплуатации

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Introduction
1.6 About Siemens' Transducers
Transducers
Compact Operating Instructions, 09/2018, A5E43390688-AB
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1.6 About Siemens' Transducers
Note
This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based communications.
The transducers operate in association with Siemens' ultrasonic level monitoring products by
converting electrical pulses that are provided by the transceiver into ultrasonic pulses. When
transmitted, these ultrasonic pulses reflect from the material surface and echo back to the
transducer. The echo is converted back to an electrical signal, and is interpreted by the
Siemens transceiver using our proven Sonic Intelligence™ algorithms.
The effective acoustical energy is emitted from the transducer face and radiated outward,
decreasing in amplitude at a rate inversely proportional to the square of the distance.
Maximum power is radiated axially (perpendicular) from the transducer face in a line referred
to as the axis of transmission. Where power is reduced by half (– 3 dB), a conical boundary
defining the sound beam, centered about the axis of transmission, is established. The
diametric measurement of the cone in degrees defines the beam angle. Impedance
matching techniques are used to optimize the transfer of power from the transducer into air
and vice versa.
All transducers incorporate an integral temperature sensor that reports the air temperature at
the transducer to the transceiver. The connection is transparent, in that both the ultrasonic
and temperature components of the transducer use the same leads.