Ultrasonic level switch Echotel® 910
for liquidsstainless steelthreaded

ultrasonic level switch
ultrasonic level switch
ultrasonic level switch
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Characteristics

Technology
ultrasonic
Medium
for liquids
Material
stainless steel
Mounting
threaded
Other characteristics
custom, ATEX

Description

Echotel® Model 910 ultrasonic level switches utilize ultrasonic contact technology for measuring level in clean liquid applications. These integrally mounted level switches offer either a 8-amp DPDT gold flash relay or a 5-amp DPDT hermetically sealed relay. The 910 level switch is often installed into seal pots found in refineries and chemical plants. Ultrasonic contact switches use a pair of piezoelectric crystals that are encapsulated in epoxy at the tip of the transducer for level measurement. 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. Measures level within 0.25" (6 mm) from the end of the tip-sensitive transducer 10-amp DPDT gold flash or 5-amp DPDT hermetically-sealed relay Field selectable failsafe FM, CSA and ATEX approval for hazardous locations No calibration required 316 stainless steel transducer OPTIONS Available in a wide variety of lengths up to 130 inches NPT, BSP or flanged mounting 10-amp DPDT gold flash relay or a 5-amp DPDT hermetically sealed relay ECHOTEL Model 910 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.

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