Non-Contact Water Level Measurement
ultrasonic water level sensor FEATURES:
  • Non-Contact Measurement
  • Rugged and Fully Encapsulated
  • 4-20 mA Transmitter
  • Easy Installation/No Programming
  • Cost Effective
  • Great for Wastewater
  • Great for Flumes and Weirs
  • Temperature Compensated
  • 1, 3, 6, and 35 ft Ranges
  • For Monitoring Water Level and Open Channel Flow
Ultrasonic Water Level Sensor Product Description
The WL700 Ultrasonic Water Level Sensor uses the latest ultrasonic distance measuring technology for accurate non-contact water level monitoring.  The fully encapsulated sensor/transmitter is temperature compensated and provides an industry standard 4-20 mA output.  There are four ranges available including 1, 3, 6, and 35 ft to meet a wide variety of applications.  The unique 1 ft range Ultrasonic Water Level Sensor is ideal for measuring flow in small flumes and weirs.  The 3 ft and 6 ft Ultrasonic Water Level Sensor ranges are best for measuring river, lake and tank levels and for measuring open channel flow in larger flumes.  Installation is simple and requires no programming or calibration.  No maintenance is required.


The WL700 Ultrasonic Level Sensor is rugged, reliable and completely weatherproof. It is ideal for sewer or wastewater applications.  The sensor is easy to mount, comes with a 10 cable and complete instructions.  It is easy to interface to all PLCs, SCADA and telemetry systems with its simple 3-wire 4-20 mA output.  The WL700 Ultrasonic Water Level Sensor is compatible and provided optionally with the Global Water FC220 Open Channel Flow Monitor and the PC300 Process Controller (for water level control).

Ultrasonic Water Level Sensor Specifications
Ranges: 0.17 to 1.00 ft; 0.67 to 3.00 ft; 0.84 to 6.00 ft, and 1.5 to 35 ft
Supply Voltage: 18VDC to 30VDC
Current Draw: 100 mA
Output: 4-20 mA (4 mA is minimum water level and 20 mA is maximum water level)
Averaging: 15 second running average (to smooth out water turbulence).
Warm Up Time: 15 seconds
Resolution: Continuous Analog
Operating Temperature Range: -40 to 185F (-40 to 85C) (1, 3, and 6 ft range)
     -40 to +145F (-40 to 62.8C) (35 ft range only)
Temperature Compensated Range: -20 to 120F (-28 to 48C)
Accuracy: +1.0% of Range, +2.0% of 35 ft Range
Beam Angle: 12
     1 ft range: aluminum
     3, 6, and 35 ft ranges: PVC
     1x2x4 inches (2.5 x 5.1 x 10.2 cm) rectangular (1 ft range)
     1 inch id pipe thread x 4 inches long (2.5 cm ID x 10.2 cm long) (3 ft and 6 ft range)
     2-1/2 inches id pipe thread x 4 inches long (6.3 cm ID x 10.2 cm long) (35 ft range)
Weight: 1.5 lbs (0.68 kg)
Ultrasonic Water Level Sensor Options
WL700 Ultrasonic Water Level Sensor
Specify Water Level Range: 1 ft (PN# AQA000), 3 ft (PN# AQB000), or 6 ft (PN# AQC000). Includes 10 ft cable.
WL700-035 Ultrasonic Water Level Sensor (PN# AQD000)
35 ft water level range. Includes 10 ft cable.
Extra Cable (PN# 01-842)
Standard level sensors include 10 ft of cable, but can be purchased with up to 500 ft of cable.
BR100 Boost Regulator (PN# FNA000)
12 to 24 Volt boost regulator. For use with 12V battery operated systems.
WL750 Ultrasonic Level Transmitter
Includes integrated display and user interface.
WL400 Water Level Sensor
When ordering, specify water level range that will cover the maximum water level change for your application (this is not necessarily the total depth of water): 0-3, 0-15, 0-30, 0-60, 0-120, 0-250, 0-500 ft.  Selecting the smallest water level range possible will ensure the greatest accuracy.  Includes 25 feet of cable.
FC220 Open Channel Flow Monitor
Includes total and flow rate display with multiple relay outputs.
PC300 Process Controller
Process control meter and industrial control system.
WL16 Water Level Logger
Submersible pressure transducer and datalogger for recording water level data.

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