Ultrasonic Liquid Level Switches - Discontinued

LVU-230/260 Series

1000:1 Wet-to-Dry Ratio with 316SS Machined Body Sensor
Epoxy Painted Enclosure
No Calibration or Special Installation Requirements
LVU-260 Has 9 Vdc to 30 Vdc Input Power
Standard 3 /4 " NPT

Description

The LVU-230/260 Series has been discontinued. Please see the LVSW-701 Series as a possible alternative or contact our Flow Engineering department.

The LVU-230 and LVU-260 liquid level switches are the ideal solution to a host of liquid-level sensing and control applications. Their small size and standard ¾NPT fittings make them suitable for new or existing applications. The LVU-230 models have a relay output along with a 316 SS or PVDF^® sensor and an integral miniaturized, encapsulated electronic control unit mounted in a cast aluminum, explosion-proof, watertight enclosure. The LVU-260 is a 2-wire, 4 or 20 mA output system.

Both use an ultrasonic wave propagation sensor mounted in the liquid medium. The electronics generates a continuous wave ultrasonic signal that completely illuminates the liquid-sensing area. The absence of liquid in the sensing area causes the ultrasonic signal to dissipate, which the electronics senses as a "dry" condition (and provides a 4 mA output signal in the LVU-260). When liquid is present, the amplitude of the ultrasonic signal increases, indicating a "wet" condition. This signal is converted by the electronics and energizes the 10 A relay (LVU-230) or a 20 mA output signal (LVU-260). The LVU-230 electronics may be set to provide the control output to an alarm, pump, or other device on either a dry or wet condition.

SPECIFICATIONS
Repeatability: 2 mm (0.08") typical
Delay (On): 0.5 s
Input Power:
    LVU-230: 115 Vac 50/60 Hz standard; 230 Vac 12 Vdc, or 24 Vdc (optional)
    LVU-260: 9 to 30 Vdc
Outputs:
    LVU-230: 10 A DPDT
    LVU-260: Low-level fail-safe: 4 ±1 mA dry; 20 ±1 mA wet; high level: 20 ±1 dry, 4 ±1 wet
Housing: NEMA 4/NEMA 7 watertight, explosion-proof enclosure, cast aluminum Class I, Group C and D, Class II, Groups E, F and G; and Class III, Division I and 2
Sensor Material:
    LVU-230S, LVU-260S: 316 LSS
    LVU-230K, LVU-260K: PVDF
Temperature:
    Sensor: -40 to 148°C (-40 to 300°F)
    Electronics: -29 to 77°C (-20 to 170°F)
Operating Pressure: Up to 1000 psig
Mounting: ¾ NPT standard
Weight: 453g (1lb)

Place Order(Specify Model Number)

Part Number/ Desc.

Qty

Description

4 or 20mA Output, PVDF Body

LVU-264K

Consult Sales

Availability:

24" Immersion Length, 4 or 20 mA Output, PVDF

† All amounts shown in AUD
Note: * Immersion Length is from bottom of thread to start of gap. The top of gap to tip of probe is 1.5 inches additional.

Comes complete with operator's manual.

Other materials and lengths (up to 120") available. Consult OMEGA Flow Engineering.

For 230 Vac operation, add "suffix "-230V" to model number, add $50.
For 24 Vdc operation, add "suffix "-24V" to model number, no additional cost.
For 12 Vdc operation, add "suffix "-12V" to model number, add $50.