Phone: 888-206-4108
Email: sales@levelandflowonlinesales.com
Fax: 636.537.1405

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EchoSwitch Multi-Point Ultrasonic Level Switch

-Data Sheet-



The EchoSwitch ultrasonic level switch features three relays, providing non-contact detection for up to 8m. Each relay can be configured on a single set point alarm, two latched set points for automatic fill or empty including lead-lag, or two independent set points for out-of-bounds alarms. In addition, relays 1 and 2 can be interlocked for a relay alternation or duplex operation.

The Echo Switch is most often selected for atmospheric day tank, pump lift station and waste sump applications (corrosive, waste, or slurry media). Its 7.6cm beam diameter is ideal for applications with restricted space and an amazing 5cm dead band optimizes filling capacity of small vessels.



Range: LU75: 2" to 4' (5 cm to 1.2m)
LU72: 4" to 9.8' (10 cm to 3m)
LU71: 4" to 16.4' (10 cm to 5m)
LU73: 8" to 26.2' (20 cm to 8m)
Contact logic: Single point: alarm
Two point: latching or out-of-bounds alarms
Relay interlock: Relays 1 & 2 only; alternation or duplexing
Repeatability: 0.25" (6mm) Contact fail-safety: De-energizes during echo signal loss
Adjustability: Over entire range Process temp: F: -4° to 140°
C: -20° to 60°

LU72/LU75: 0.5" (1.2 cm)
(single set point)
LU71/LU73: 1" (2.5 cm)
(single set point)

Temperature comp: Automatic
Electronics temp: F: -40° to 160°
C: -40° to 71°
Beam width: LU72/LU75: 2" (5 cm) dia.
LU71/LU73: 3" (7.6 cm) dia.
Pressure: 30psi (2 bar) @ 25°C, derated @ 1.667psi (.113 bar) per °C above 25° C
Dead band: LU75: 2" (5 cm)
LU71/LU72: 4" (10 cm)
LU73: 8" (20 cm)
Enclosure rating: NEMA 4X (IP65)
Enclosure vent: Watertight membrane
LED indication: Power, relay, and echo status Enclosure material: PC/ABS FR
Calibration: Target, push button Transducer material: PVDF Kynar
Memory: Non-volatile Process mount: LU72/LU75: 1" NPT (1" G)
LU71/LU73: 2" NPT (2" G)
Supply voltage: 50_5: 95-250 VAC
58_5: 12-28 VDC
Mount gasket: Viton
Consumption: 50_5: 20 watts max.
58_5: 100 mA @ 24 VDC
Conduit entrance: Dual, 1/2" NPT
Contact type: (3) SPDT relays Classification: General purpose
Contact rating: 60 VA CE compliance: (pending) EN 61326 EMC
EN 61010 safety


Call toll-free: 888.206.4108--- Email: sales@levelandflowonlinesales.com --- Fax: 636.537.1405