Milltronics PL-521 Manual de instrucciones descargar pdf (Pagina 3)

ABOUT THE TRANSDUCER

The Echomax XPS / XCT series of transducers

operates in association with 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

transceiver receive period.

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.

The XPS / XCT 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.

GENERAL GUIDELINES

This equipment may be used in all hazardous zones and with all gases with temperature

classes T1, T2, T3 and T4 for the XPS series (XPS-10, XPS-15, XPS-30 and XPS-40) and T1,

T2 and T3 for the XCT series (XCT-8 and XCT-12). The XPS series is only certified for use in

ambient temperatures in the range of - 40°C to 95°C and the XCT series is only certified for

use in ambient temperatures in the range of -40°C to 145°C. Neither should be used outside

of their respective temperature ranges.

Installation shall be carried out in accordance with the applicable code of practice, and by

suitably trained personnel.

These devices should only be supplied from a circuit containing a suitably-rated fuse that has

a breaking capacity of 4000A. This fuse in included in Milltronics’ transceivers.

Repair of this equipment shall be carried out in accordance with the applicable code of

practice.

The certification of this equipment relies on the following materials used in their construction:

Material XPS Series XCT Series

Enclosure Kynar 710 Kynar 710

Encapsulant LA-9823-76 Durapot 861-F3 & 864

Manual override can be accomplished by using the disconnect switch provided in the building

installation of the associated controller.

transducer

transducer face

– 3 db

boundary

axis of

transmission,

perpendicular to

transducer face

PL-521 3

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Milltronics PL-521 Manual de instrucciones Pagina 3

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