Ultrasonic Contact Level Switches

Increasing demands for compliance with safety systems and overfill protection have mandated more reliable point level measurement. Echotel® Models 961 and 962 ultrasonic level switches meet these demands with advanced transducer designs, extensive hazardous location approvals, and a new self-test technology.

Single Point

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

Dual Point

Echotel Model 962 is a dual-point switch that can be used as a level controller, or to control pumps in an auto fill or auto empty mode. The tip sensitive lower gap performs well in aerated or foamy liquids, and can measure to within 1.4" of the vessel bottom. The rigidity of the unique flow-through upper gap allows separations of up to 125" (318 cm) between the upper and lower transducer gaps.

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.

Echotel® Model 940 and 941 Ultrasonic Level Switches are compact integral units that utilize pulsed signal technology to perform high or low level measurement in a wide variety of liquid applications. These switches feature a 316 stainless steel tip-sensitive transducer that is offered in a variety of NPT, flanged, and sanitary process connections. The compact electronics are completely encapsulated just above the process fitting.

The Model 940 offers a 1-amp SPDT relay output. The Model 941 has a mA current shift output.

The U00X Solid-State Level Switch is a reliable, low-cost liquid level control for use in installations where mechanical float-type switches are impractical. The U00X is compatible with many liquids, regardless of the fluid’s density or conductivity. The unit requires no calibration, withstands pressures up to 2,000 PSIG, and its compact, 7/8″ diameter probe installs in any orientation. The U00X is constructed from durable and easy-to-clean 316 stainless steel with probe lengths available up to 100″. Optional materials include CPVC, PVDF and Hastelloy C.

The U00XE Solid-State Level Switch is a reliable, low-cost liquid level control for use in hazardous locations. The U00XE is compatible with many liquids, regardless of the fluid’s density or conductivity. The unit requires no calibration, withstands pressures up to 2000 PSIG, and its compact, 7/8″ diameter probe installs in any orientation. The U00XE is constructed from durable and easy-to-clean 316 stainless steel with probe lengths available up to 100″. Optional material: Hastelloy C.