HLS Series Liquid Level Sensor

Advanced Submersible Pressure Level Transmitter — CPVC Construction

The Hayward HLS Series liquid level sensor provides highly accurate and repeatable measurement for industrial tank applications. Its all-CPVC body, alumina diaphragm and triple-sealed cable entry make it a reliable choice for a wide range of process fluids.

The physical location of the sensor marks the lowest measurable liquid level in the tank — the sensor will not read below its own elevation. Because the pressure reading is referenced to water, simply divide the sensor output (feet of water) by the specific gravity of your fluid to obtain the true liquid height above the sensor.

Key Features

• Unaffected by surface foaming, waves or headspace vapors
• All-CPVC housing (ASTM D1784, cell classification 23447)
• Alumina (Al₂O₃) diaphragm
• Triple-sealed cable entry into the body
• Available with FPM or EPDM seals
• Two standard ranges: 0–15 ft and 0–33 ft of water column
• Standard FEP-coated cable: 30 ft (0–15 ft sensor) or 50 ft (0–33 ft sensor); lengths up to 1,000 ft available
• 10–35 VDC power, direct 4–20 mA analog output
• 0.25% full-scale accuracy
• Laser-printed sensor details on the body
• HLSMP11 moisture-protection desiccant pack included as standard

Technical Specifications

A full range of accessories is available to support installation and long-term reliability. Contact us with your tank depth, fluid specific gravity and chemical compatibility requirements and we will configure the correct HLS sensor and cable length for your application.