Magnetrol Echotel® 961/962 Single- And Dual-point Ultrasonic Level Switches

 

Increasing demands for compliance with safety systems and overfill protection has mandated more reliable point level measurement. Echotel ® Models 961 & 962 Ultrasonic Level Switches meet these demands with reliable transducer designs, extensive hazardous location approvals, and an advanced 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.

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 127" (322 cm) between the upper and lower transducer gaps.

Features

Features

• No calibration required
• Performance independent of liquid type or properties such as density (SG)
• Single or dual point liquid level measurement
• Advanced self-test and diagnostics
• Adjustable time delay for turbulent or aerated liquids
• Relay output or mA current shift with separate malfunction indication
• Integral or remote mount electronics
• Pulsed signal technology
• FM, CSA, ATEX and IEC agency approvals
• Suitable for Safety Integrity Level (SIL) 1 and 2 loops

Applications

• Overfill protection
• Seal pot level
• High/low level alarm
• Chemical Tanks
• Pump protection/control
• Low density/low dielectric
• Cryogenic liquids
• Level with spray balls
• Fill lines

Specifications

Supply Voltage

12 to 35 VDC, or 100 to 265 VAC, 50/60 Hz

Relay Outputs

961:

One DPDT level relay and one SPDT malfunction relay

962:

Two SPDT level relays and one SPDT malfunction relay

Relay Ratings

DPDT:

5 amps @ 120 VAC, 250 VAC, and 30 VDC, 0.4 amp @ 110 VDC

SPDT:

5 amps @ 120 VAC, 250 VAC, and 30 VDC, 0.15 amp @ 125 VDC

Fail-safe

Selectable for high or low level

Power Consumption

961/962:

Less than 3 watts

Ambient Temperature

-40 to +160 °F (-40 to +70 °C)

Download Datasheet: Magnetrol Echotel® 961/962 Single- And Dual-point Ultrasonic Level Switches

Reference: magnetrol.com