Global Water WL705 Ultrasonic Water Level Sensor

The WL 705 Ultrasonic Water Level Sensor uses the latest ultrasonic distance measuring technology for accurate non-contact water level monitoring. The sensor contains a rugged transducer in a stainless steel sealed housing for long life and provides an industry standard 4-20 mA output. 

  • Features
  • Specifications
  • Options
  • Long range, short dead band
  • Unaffected by optical factors like color and transparency
  • 4-20 ma Transmitter
  • Durable sealed housing for wet or dirty applications
  • For monitoring water level in tanks and open channel

There are three ultrasonic water level sensor ranges available including 3 ft, 12 ft, and 48 ft to meet a wide variety of applications. The unique 3 ft range ultrasonic water level sensor is ideal for measuring flow in small flumes and weirs. The 12 ft and 48 ft ultrasonic water level sensor ranges are best for measuring river, lake and tank levels and for measuring open channel flow in larger flumes. Ultrasonic water level sensor installation is simple and requires no programming or calibration. No maintenance is required for the ultrasonic water level sensors.

The WL705 Ultrasonic Level Sensors are rugged, reliable and completely weatherproof - ideal for sewer or wastewater applications. The sensors are easy to mount, come with a 6 ft standard cable and complete instructions. The ultrasonic water level sensors are easy to interface to all PLC's, SCADA and telemetry systems with its simple 3-wire 4-20 mA output. The WL705 Ultrasonic Water Level Sensor is compatible and provided optionally with the Global Water FC220 Open Channel Flow Monitor and the PC320 Process Controller (for water level control).

Ranges: 0.33 to 3 ft; 0.33 to 12 ft; and 1 to 48 ft
Resolution: 0.009 in, 0.035 in, and 0.141 in
Repeatability: Greater of ±0.03 inches (0.76 mm) or 0.1% of range @ constant temperature
Accuracy: Better than 0.5% of range @ constant temperature; affected by temperature gradients, target echo strength, and speed of sound in vapors
Transducer Type: Ruggedized piezoelectric
Beam Angle: 12° conical shaped pattern
Power: 3 and 12 ft rng: 10 to 30 VDC @70 mA max
48 ft range: 10 to 30 VDC @40 mA max
Output: 4-20 mA (4 mA is minimum water level and 20 mA is maximum water level)
Update Rate: 50 ms
Warm Up Time: 15 seconds
Operating Temperature Range: -40° to 158°F (-40° to 70°C)
Humidity: 0-100% (avoid heavy condensation)
Housing Material: 303 stainless steel
Mounting: 3 and 12 ft rng: 30x1.5 mm threaded housing
48 ft range: 2.5 inch Male NPT threads
Dimensions: 3 and 12 ft rng: 4.062 in. long x 1.05 in. dia. (103.2 L x 26.7 Dia mm)
48 ft range: 4.75 inch long x 2.375 inch dia. (121 L x 60 Dia mm)
Weight: 3 and 12 ft rng: 12.7 oz (0.36 g)
48 ft range: 25.9 oz (0.73 kg)
IP rating: IP 68, Nema 4X
Certifications: CE

Ultrasonic Water Level Sensor Options

WL705-003 Ultrasonic Water Level Sensor (PN# AQS003)
Water Level Range: 3 ft. Includes 6 ft cable. 

WL705-012 Ultrasonic Water Level Sensor (PN# AQS012)
Water Level Range: 12 ft. Includes 6 ft cable. 

WL705-048 Ultrasonic Water Level Sensor (PN# AQS048)
Water Level Range: 48 ft. Includes 6 ft cable. 

Extra Cable (PN# 01-842)
Standard ultrasonic water level sensors include 6 ft of cable, but can be purchased with up to 500 ft of cable.