Increasing demands for compliance with safety systems and overfill protection has mandated more reliable point level measurement. Echotel® Model 961 Ultrasonic Level Switches meet these demands with advanced transducer designs, extensive hazardous location approvals, and a new self-test technology.

Model 961 offers the ultimate solution to reliable single point liquid level measurement. This advanced switch uses pulsed signal technology for superior performance in difficult process conditions, and to provide excellent immunity from sources of electrical noise interference. Extensive self-testing of the electronics and transducer make this advanced switch suitable for use in Safety Integrity Level (SIL) 2 loops.

The Echotel 961 is equipped with advanced diagnostics that continuously check the sensor and electronics.The diagnostics also alarm for electrical noise interference from external sources.

 

No calibration

Loop current or relay output

Advanced diagnostics: sensor, electronics and electrical noise interference

LED indication for alarm status and error

Pushbuttons for manual testing of output

Metal and plastic sensors