ECHOTEL 910 PDF

Page 2 Incorporated. All rights reserved. Notes do not normally contain product described in this manual at any time without actions. They follow the procedural steps to which notice.

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Page 2 Incorporated. All rights reserved. Notes do not normally contain product described in this manual at any time without actions. They follow the procedural steps to which notice.

Page 3: Principle Of Operation Introduction Echotel Model Level Switches utilize ultrasonic contact technology for measuring level in clean liquid applications. Principle of Operation The Model Level Switch uses ultrasonic energy to detect the presence or absence of liquid in a transducer gap.

The basic principle behind ultrasonic contact tech- Ultrasonic nology is that high-frequency sound waves are easily transducer These instruments use electronic components that may be damaged by static elec- tricity present in most work environments. The following steps are recommended to reduce the risk of component failure due to electrostatic discharge. Page 6 Wiring 2. Use of 14—22 AWG twisted shielded pair wire is recommended. NOTE: Observe all applicable electrical codes and proper wiring procedures.

Make sure the power is turned off. Page 7 2. The table below lists the relay contact positions for all possible combinations of power failure, condition of the transducer gap, and fail-safe jumper position. The user must decide which combinations constitute fail-safe and alarm conditions, and then select the appropriate relay wiring and fail-safe position.

Page 8: Reference Information Reference Information Troubleshooting Caution: In hazardous areas, do not remove housing cover until power is disconnected and atmosphere is deter- mined to be safe. Verify power and control circuit wiring. Make sure liquid is filling the transducer gap.

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Echotel® 961/962 single- and dual-point ultrasonic level switches

View industry details Operating principle ECHOTEL Model switches utilize ultrasonic energy to detect the presence or absence of liquid in a single point, tip-sensitive transducer. Ultrasonic contact level technology uses high frequency sound waves that are easily transmitted across a transducer gap in the presence of a liquid media, but are attenuated when the gap is dry. Model switches use an ultrasonic frequency of 3 MHz to perform this liquid level measurement in a wide variety of process media and application conditions. The transducer uses a pair of piezoelectric crystals that are encapsulated in epoxy at the tip of the transducer. The crystals are made of a ceramic material that vibrates at a given frequency when subjected to an applied voltage. The transmit crystal converts the applied voltage from the electronics into an ultrasonic signal. When liquid is present in the gap, the receive crystal senses the ultrasonic signal from the transmit crystal and converts it back to an electrical signal.

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Magnetrol ECHOTEL 910 Installation And Operating Manual

Measures level within 0. Add to my manuals Add. Also See for Echotel Installation and operating manual — 8 pages. Every industry has different applications and relevant models. Remove transducer from the liquid.

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