Ultrasonic Level Sensor Ultrasonic Level Transmitter Non Contact Contactless Water Tank Level Meter for Liquid Oil Fuel Sewage 4-20mA RS485 Modbus

Product Description

Product Description

Programmable Ultrasonic Level Meter for Tank, Water, Wastewater and Industrial Liquids

The HHD Programmable Ultrasonic Level Meter is designed for continuous, non-contact level measurement of water, wastewater, sewage, chemical liquids, storage tanks, reservoirs and industrial process vessels.

Using ultrasonic non-contact measurement technology, the sensor does not directly contact the liquid, helping reduce maintenance and making it suitable for applications involving dirty water, corrosive liquids and difficult-to-access tanks.

The measurement range can be programmed and adjusted according to the actual tank or application, allowing one transmitter configuration to meet different level-monitoring requirements.

Two Output & Wiring Modes

Mode 1 - 2-Wire 4-20mA

Designed for simple level transmission and PLC connection.

• Output: 4-20mA

• Wiring: 2-Wire

• Power Supply: 24VDC

• Simple wiring and easy installation

• Suitable for PLC, indicator, data acquisition and standard control systems

Mode 2 - 4-Wire Multifunction Version

Designed for more advanced industrial automation applications.

• Output: 4-20mA + RS485

• Communication: RS485 Modbus

• Relay Output: 2 Relays

• Power Supply: 24VDC

• Optional 85-265VAC power supply

This version can simultaneously provide continuous level output, digital communication and high/low level alarm or pump-control signals, making it suitable for PLC, DCS and SCADA systems.

Flexible Configuration

Different options are available according to the installation environment:

• Standard Ultrasonic Probe

• IP68 Waterproof Probe

• PTFE Anti-Corrosion Probe

• Mounting Bracket

• Flange Connection

• 24VDC or Optional 85-265VAC Power Supply

• Programmable measuring range and parameters

The PTFE anti-corrosion probe is suitable for applications involving corrosive liquids, acid/alkali environments and chemical tanks, while the IP68 probe is recommended for humid, outdoor or harsh installation environments.

Main Applications

• Water tanks and storage tanks

• Wastewater and sewage tanks

• Pump stations

• Chemical liquid tanks

• Reservoirs, channels and water-treatment systems

• Industrial process vessels

• High / low level alarm

• Pump start / stop control

• PLC / DCS / SCADA level-monitoring systems

Why Choose HHD

HHD is a leading Chinese manufacturer of industrial flow measurement and automation instruments, supplying flow, pressure and level measurement products for industrial projects worldwide.

We provide OEM/ODM customization for measuring range, probe material, power supply, output signal, communication, connection, logo and packaging.

We also provide local technical support for model selection, installation, parameter programming, RS485 communication and troubleshooting. Selected specifications are available from local warehouses, helping shorten delivery time for urgent projects.

HHD is actively recruiting distributors, agents, engineering companies, system integrators and channel partners for long-term cooperation in global industrial automation markets.

For correct model selection, please provide the medium + measuring range + tank height + installation environment + power supply + required output + connection + order quantity.

Product Parameters

Ultrasonic sensor	Low power-sensor	Middle power-sensor		Large power-sensor
The Max. range	≤5m	≤7m	≤10m	≤10m	≤12m	≤15m
Blind area	Standard: 300mm	350mm	500mm	500mm	600mm	800mm
	OEM:200mm
Power supply	Standard: DC24V	DC24V	DC24V	DC24V	DC24V	DC24V
	OEM:DC12V, AC220V		/	OEM:DC12V, AC220V		/
Beam angle	15°	12°		9°
Operating frequency	38K±10Khz	55K±10Khz		40K±5Khz
Accuracy	Standard: ±0.25%FS or ±3mm; (at 25ºC, Absolutely flat target under the condition of standard) OEM: FS≤1m, accuracy can be ±1mm FS≤2m, accuracy can be ±3mm FS≤15m, accuracy can be ±0.25% FS
Output signal	Standard: 4-20mA (3 wires) OEM: 4-20mA(4 wires), 0-20mA, 0-5v, 1-5v 0-10v, 1-10v (both signal can not be customized DC12v) RS485(MCU protocol as default, Address=01, bps=9600) 4-20mA+RS485; 1-5V+RS485, 1~2NPN 1-10V, 0-10V, 4-20mA(two wire) - Power supply 24VDC can not be OEM
Measuring mode	Standard: Distance mode, the distance of ultrasonic sensor surface to measuring target surface OEM: Level mode; the distance of level surface to level bottom(the bottom of tank) NOTE: Ensuring the distance of sensor surface to the level bottom is the actual mounting height, otherwise might be have installation error.
Working temp.	Standard: 0~50ºC OEM: Negative Temp. -10ºC,-20ºC,-30ºC; Positive Temp. 60ºC,70ºC,80ºC
Wiring Mode	Quick connect type terminal(can be customized cable outlet about 1m)
Installation	Screw type or sifter clamping ; screw size: M68*2.0mm
Protection class	IP65, OEM of IP66, IP67, IP68
Working environment	Normal pressure, non-explosion-proof; non-corrosive environment OEM: Anti-explosion symbol Exia II AT3 (DC12 V,range≤10m ) The material sensor housing: PTFE for large power sensor Strong in corrosion resistance
NOTES	1.When level range ≥15m, equip with other type ultrasonic sensors 2.Users no need to set the address, bps, installation height, so please verify to factory before ordering 3.For RS485-PC product, users can adjust the parameter by software(the default software) The max measure range depends on the smooth level surface, so please confirm the real using environment and level surface when ordering.