LVU700-Series

Supported Applications

The Omega LVU700 Series is a reflective ultrasonic level transmitter designed for continuous measurement in large tanks. The series utilizes proprietary Reflective Technology™ to provide reliable distance or range measurements between the transducer and process media, specifically engineered for condensing environments.

Documented applications include bulk storage, neutralization tanks, clarifiers, and waste sumps. The sensor is suitable for measuring chemicals, water, wastewater, and oil (non-foaming and/or highly vaporous liquids).

Operating Conditions & Performance

The LVU700 Series operates within an ambient temperature range of -35 to 60 °C (-31 to 140 °F) and a process temperature range of -40 to 80 °C (-40 to 176 °F). The unit features automatic temperature compensation. Pressure rating is specified as 30 psi (2 bar), derated at 1.667 psi per degree C above 25 °C.

Performance specifications vary by model:

• Lvu706 Series: Measurement range of 8" to 19.6' (20cm to 6m) with a resolution of 0.079" (2mm). The dead band is 20cm (8 inches), and the beam width is 7.6cm (3 inches).
• Lvu712 Series: Measurement range of 18" to 39.3' (45.7cm to 12m) with a resolution of 0.196" (5mm). The dead band is 45.7cm (18 inches), and the beam width is 15.2cm (6 inches).

Accuracy for both models is ± 0.2% of range in air at 20 °C.

Voltage & Signal Specifications

• Power Supply: 14-28 VDC (Load resistance: 500 ohms @ 24 VDC).
• Output Signal: 4 to 20 mA current loop, two-wire; supports fail-safe output of 20-4 mA.

Mechanical & Environmental Ratings

• Housing Material: Polypropylene head with skirt to support transducer w/ conduit.
• Transducer Material: Black, PVDF (Polyvinylidene fluoride) with FKM gasket.
• Gasket: FKM (G thread only).
• Enclosure Rating: NEMA 6P / Type 6P (IP68).

Configuration Options

The series offers configurable process connections, display options, and programming interfaces to accommodate specific installation requirements.

Process Connections & Mounting

• Lvu706 Models: Available with 2" NPT or 2" G (BSPP) threads.
• Lvu712 Models: Available with 3" NPT or 3" G (BSPP) threads. Note: The ordering table lists LVU712 variants as "2" NPT Level Transmitter," but the specification tables and dimensional data confirm a 3" thread diameter for the LVU712 Series.

Display & Configuration Options

• LCD Display: Models with an integrated display feature a removable module via short cable and plug. The LCD shows 6 characters (10 mm / 0.394" height) with three buttons for UP, OK, and DN navigation.
• No-Display Versions (-B): Variants designated with "-B" are supplied without the FOB USB Interface or display module. The electrical connection block is optional on these versions (FOB Non-Display version).
• Software Programming: Models equipped with a removable display allow for LVCN414-SW software capability when the open connection permits.

Electrical Connections

• Power & Return: 2-pin removable terminal block.
• Display Connect: 4-pin removable terminal pins (for display models).
• Conduit Connection: Single, ½" NPT.

Accessories

• Lvu500-USB: FOB for programming LVU500 or LVU700 series level transmitters (required for non-display models).

Key Product Differences

The primary distinction between the two model families is measurement range and physical dimensions.

• Lvu706 Series: Designed for shorter ranges up to 19.6 ft (6m). The unit features a head angle of 25°, an overall height of 6.96" (176.7mm), and a thread diameter of 2.15" (54.6mm).
• Lvu712 Series: Designed for extended ranges up to 39.3 ft (12m). The unit features a head angle of 25°, an overall height of 6.93" (175.9mm), and a thread diameter of 3.33" (84.5mm).

Both series share the same accuracy class, operating temperature limits, enclosure rating, and wetted materials.