Cylindrical distance sensor LRS 3
ultrasonic4-20 mAvoltage output

Cylindrical distance sensor - LRS 3 - Format Messtechnik GmbH - ultrasonic / 4-20 mA / voltage output
Cylindrical distance sensor - LRS 3 - Format Messtechnik GmbH - ultrasonic / 4-20 mA / voltage output
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Characteristics

Configuration
cylindrical
Technology
ultrasonic
Output
4-20 mA, voltage output, RS-232, 2-wire
Other characteristics
non-contact, programmable, long-range, short-range, for automation, for level measurement, with digital display
Range

Max.: 2,000 mm
(79 in)

Min.: 30 mm
(1 in)

Description

The ultrasonic distance sensor LRS 3 comprises the ultrasonic sensor head and the basic unit with integrated display and function key. The new circuit technology and its programmable functions make the LRS 3 a perfect sensor for all kinds of non-tactile distance and thickness measurements. LRS 3 combines a large measuring range with high accuracy at the physical limits. Ranging is performed by emitting and detecting ultrasonic wave packages in air. The traveling time of the ultrasound from the sensor to the object and back is determined by using a fast responding foil transducer. The resolution of the sensor LRS 3 is better than 0,01 mm. The precision of the measurement is only depending on the homogeneity of the air. The sensor-head has an integrated temperature-sensor for measuring the mean air temperature. From this the velocity of the ultrasound is calculated. The measured distances are displayed on the LED-display of the basic unit and are transmitted to a PC or other devices via a serial interface. By the function key the user can switch between relative and absolute measurement. All kinds of objects made of concrete, stone, metal, plastic, wood, paper and glass can be measured. Even highly sound absorbing materials like foams, textiles and insulation mats can be detected not regarding their surface structure. The measurement is independent of the colour and other optical effects. A typical application is the on-line thickness measurement of products made of rubber, canvas, felt and concrete during the production process.

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