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Ultrasonic Level Switches

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  • Ultrasonic level switch / for liquids / housed / fail-safe
  • Ultrasonic level switch / for liquids / housed / fail-safe

LU74-78

Article: 00137916

Ultrasonic level switch / for liquids / housed / fail-safe

The general purpose ultrasonic level sensor provides continuous level detection up to 26.2’ (8m) with 3 programmable relays for level switch or control functions, and a 4-20mA signal output. The sensor is programmed via the integral push button display module. Each relay can be configured on a single set point (high level alarm or low level alarm) or latched on two set points for automatic fill or empty in simplex (one pump or valve), duplex (two pumps) or triplex (three pumps) level control modes with selectable time delay and fail-safe logic. The embedded level controller can lower cost by replacing external control hardware. This non-contact liquid level sensor is ideally suited for corrosive, sticky or dirty liquids, and is broadly selected for pump lift station, sump and day tank level applications.
Features

Offered in 3 level detection ranges from 9.8’ (3m) to 26.2’ (8m)

Configuration is simple via integral push button display module

Three programmable relays for switch, pump control and fail-safety
? 1 pump or valve with 2 alarms
? 2 pumps (lead-lag) with 1 alarm
? 2 pumps (duplexing) with 1 alarm
? 3 independent switch point alarms

4-20 mA output can be used to provide local or remote level indication

LCD display indicates level height in engineering units and relay status

Narrow 2" or 3" beam width for applications with limited measurement space

Short 4" or 8" dead band maximizes the measureable filling capacity of the tank

PVDF transducer and NEMA 4X polycarbonate enclosure for corrosive liquids

Automatic temperature compensation for accurate measurement

Specifications

  • Technology: ultrasonic
  • Measured material: for liquids
  • Mounting: housed
  • Protection level: fail-safe
  • Level range: 8 m (26' 2")
  • Process pressure: 2 bar (29.01 psi)
  • Process temperature: Min.: -20 °C (-4 °F)

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