General Guidelines - Siemens ST-H Series Operation Manual

Introduction
The ST-H transducer operates with Siemens Milltronics
ultrasonic level monitoring products.
The transducer converts the electrical energy of the transmit
pulse from the transceiver into acoustical energy. It then
converts the acoustical energy of the echo back into
electrical energy for the controller.
The transducer face emits acoustical energy that radiates
outward, decreasing in amplitude at a rate inversely
proportional to the square of the distance. Maximum power
radiates perpendicularly from the transducer face on the
axis of transmission. Where power is reduced by half (– 3
dB), a conical boundary centered around the axis of
transmission defines the sound beam, the diameter of which
is the beam angle.
The ST-H transducers have an integrated temperature sensor that reports the air temperature
at the transducer to the controller.

General Guidelines

WARNING:
compatibility (or inertness) for general purposes. For exposure to specific
environments, check with chemical compatibility charts before installing.
This product is intended for use in industrial areas. Operation of this equipment in a
Note:
residential area may cause interference to several frequency based communications.
7ML19985QK82
Materials of construction are chosen based on their chemical
ST-H Transducer – OPERATION MANUAL
transducer
transducer face
–3db
boundary
axis of
transmission,
perpendicular to
transducer face
Page EN-3