WL430 Water Level Sensor

Price$1,817.00 (US Only)



In Stock 0 - Available for Backorder

The Sewage Lift Station Wastewater Level Sensor's "Steel Cage" design offers the highest reliability in level measurement for severe high solids environments such as sewage, sludge level, lift/pump station sewage level, oil and gas industry, storm canals, wet wells, slurry tanks, and more.

  • Overview

    Key Features

    • Enhanced internal surge and lightning protection
    • Life-Time Surge Warranty Replacement Program when partnered with the AP0300 Surge Protector
    • Flush clog-free sensor; 316L SST
    • Enhanced internal EMI and RFI disturbance protection
    • 2.5 inch sensing diaphragm
    • Vented cable for automatic barometric compensation
    • Double-sealed submersible cable exit
    • Corrosion resistant
    • 4-20 mA (0-5 VDC optional upon request)
    • CSA, CE, and/or ATEX/IEC certified. Optional FM/CSA hazardous approvals available upon request.

    The wastewater level transmitter system consists of a submersible pressure sensing element cased in a 316L SST housing. The lift station wastewater level sensor's electronics are capable of withstanding lightning strikes and meet RCTA/DO 160D for lightning direct effects and surge protection for FAA and MIL-STD test and NASA standard electrical surge requirements. All Sewage Lift Station Wastewater Level Sensors are corrosion resistant and clog free.

    The lift station wastewater level transmitter's unique cable venting system allows for barometric pressure differential compensation while keeping the elements out, using a Gortex filter encapsulated tip. The "Steelcage" design gives full protection and allows sensing to sewage levels no matter how much debris/mud/sand or rags build up.      

  • Specifications
    WL430 Wastewater Level Sensor Electrical  
    Supply Voltage 8 - 38 Vdc

    4 - 20 mA

    Zero Balance ± 1% Full Scale Output (FSO)
    FSO Setting

    ± 1% FSO


    Infinite ( ±0.001% FSO usable)

    Response Time < 5 mS

    Insulation Resistance

    1000 MO @ 50 Vdc

    Reverse Polarity


    Warm-Up < 10 mS
    Power Supply Effect = ± 0.002% FSO per V input
    EMI/RFI Internal Filtering
    Lightning Protected MOV and dual gas discharge tube
    Short Circuit Protected Up to 40 Vdc
    Wastewater Level Sensor Performance  
    Static Accuracy ± 0.5% FSO ( BFSL, RSS) (combined effects of non-linearity, hysteresis & repeatability)


    ± 0.1% FSO

    Temperature Effects

    ± 1.5% FSO over comp range (combined effects of Zero & FSO with reference at 70°F)

    Long Term Stability ± 0.25% FSO per year
    Wastewater Level Sensor Performance  
    Pressure Ranges 10psi (23 ft) or 15psi (34 ft)
    Proof Pressure

    2x Full Scale

    Burst Pressure 5x Full Scale

    316L SST plus cable

    Pressure Port

    Flush mount per outline

    Electrical Connector 1/2 inch-NPT Male submersible conduit fitting with 40ft of polyurethane cable


    3 inch diameter x 6 inch long (7.6 cm dia. x 15 cm long)


    Nominal 20 oz (.57 kg)

    Compensated Temp Range 20 to 170°F (-6 to 76°C)
    Operating Temp Range 0 to 200°F (-17 to 93°C)
    StorageTemp Range -20 to 250°F (-28 to 121°C)
  • Accessories
  • FAQs

    What makes the WL430 different from other YSI water level instruments?

    The WL430 is specifically designed and created for sewage lift stations, storm canals, wet wells, pump stations, and slurry tanks, and other wastewater operations.  Its unique design is highly ideal for environments with high solids.

    What type of environmental element protection does the unit have?

    The WL430 is capable of withstanding lightning strikes and meets RCTA/DO 160D for lightning direct effects and surge protection for FAA and MIL-STD test and NASA standard electrical surge requirements. It also comes available with a lifetime surge protection warranty if connected to the global water AP0300 Surge protector.

    What applications is the WL430 best suited for?

    Ideal for wastewater and Industrial applications with areas that have a high concentration of solids.

    Excels in sewage lift stations, storm canals, wet wells, pump stations, and slurry tanks.

    What type of depths and cable lengths are available?

    • Depth ranges: 10PSI and 15PSI
    • Cable lengths: 40’,50’,75’,100’,125’,150’,150’,200’,300’,400’,500’

    Does it have datalogging capability, and how does it connect?

    The Sensor is a 4-20 analog output, with easy integration to a datalogger, Scada, PLC, or telemetry system.

    How is the WL430 calibrated?

    The WL430 is calibrated in the YSI facility and has quality certification upon shipment.

You may also need

WL450 Stainless Steel or Titanium Water Level Transmitters

Submersible Water Level Transmitters with Dual Outputs

Request Pricing

WL16 Water Level Logger

Submersible Pressure Transducer and USB Datalogger Combination

$1,346.00 - $2,132.00

WL400 Water Level Sensor

Submersible Pressure Transducer for Level & Pressure

$922.00 - $1,678.00

WL705 Ultrasonic Water Level Sensor

Non-Contact Water Level Measurement

$1,061.00 - $1,554.00