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External Ultrasonic Liquid Level Controller

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HS-ULC External Ultrasonic Liquid Level Controller

INTRODUCE

External ultrasonic liquid level controller (referred to as "external liquid level switch") is a new type of liquid level measurement alarm device. It is mainly used to detect the liquid level of the tank, realize the upper and lower limit alarm or monitor whether there is liquid in the pipeline (dry state protection). The tank material can be all kinds of metal, non-metal or non foaming plastic, and the wall thickness can reach 70mm. This technology is not affected by medium density, dielectric constant, conductivity, reflection coefficient, pressure, temperature, precipitation and other factors, so the level controller is suitable for all kinds of liquid level engineering control in medicine, petroleum, chemical industry, power, food and other industries. This product is an ideal choice for the detection of toxic, strong corrosion and dangerous goods.

Working Principle

未标题-2

The sensor of the liquid level controller couple the high frequency ultrasonic pulse to the container wall through the coupling agent. The pulse will propagate in the container wall and the liquid, and will be reflected by the inner surface of the container. Through the detection and calculation of the reflected signal characteristics, it can be determined whether the liquid level is at the installation position of the controller. The liquid level controller can output relay signal, which is convenient for the detection and control of liquid level.

Advantages

  • Wide Application: It can be used to measure all kinds of liquid medium in highly toxic, highly corrosive, high pressure, various complex working conditions and explosive gas environment.

  • It can be installed without stopping production, tank cleaning and no fire, easy to install and operate.

  • Reliable operation, stable performance and strong anti-interference ability.

  • The instrument does not need to be maintained by the user and has a long service life.

Application Conditions

  • Medium: Pure liquid, emulsion liquid, suspension liquid, etc.

  • Vessels: The wall of the vessel where the ultrasonic probe is installed shall be made of hard materials which can transmit signals well. For example: carbon steel, stainless steel, various metals, FRP, epoxy resin, hard plastic, ceramics, glass, hard rubber and other materials or other conforming materials. The internal and external surfaces of the vessel walls shall be flat. If the vessel wall is multi-layer material, each layer shall be in close contact without bubbles or other interlayer. For example: Vulcanized hard rubber lining, epoxy resin lining, stainless steel lining, titanium lining, etc.

Technical Parameters

Item

Standard Explosion-proof Type

Two Point Monitoring Explosion-proof Type

Intrinsically Safe Type

Two Point Monitoring Intrinsically Safe Type

Accuracy

 ±2mm

 ±2mm

 ±2mm

 ±2mm

Measurable Wall Thickness

Max. 70mm

Max. 70mm

Max. 70mm

Max. 70mm

Output Signal

Relay Output(1组单刀双掷,触点为无源节点)

继电器输出(2组单刀双掷,触点为无源节点)



Relay Capacity

DC 30V 6A/AC 250V 6A

DC 30V 6A/AC 250V 6A

/

/

Power Supply

DC 24V(AC 220V Optional)

DC 24V(AC 220V Optional)

DC 24V

DC 24V

Power

1w

1w

1w

1w

Electrical Interface Specifications

Configuration according to actual selection

根据实际选型配置

根据实际选型配置

根据实际选型配置

Diameter of Threading Hole

Φ8mm(Adapter cable diameterΦ6~8mm)

Φ8mm(适配电缆直径Φ6~8mm)

Φ8mm(适配电缆直径Φ6~8mm)

Φ8mm(适配电缆直径Φ6~9mm)

Explosion-proof Mark

Ex d II CT6 Gb

Ex d II CT6 Gb

Ex ia II C T6 Ga

Ex ia II C T6 Ga

Shell Material

Cast aluminum

铸铝

铸铝

铸铝

Protection Level

IP67

IP67

IP67

IP67

Applicable Site

Explosive gas environment other than coal mine

除煤矿外的其他爆炸性气体环境

除煤矿外的其他爆炸性气体环境

除煤矿外的其他爆炸性气体环境

Applicable Ambient Temperature of Main Engine

 -50℃~+60℃

 -50℃~+60℃

 -50℃~+60℃

 -50℃~+60℃

Applicable Ambient Humidity of Main Engine

 15%~100%RH

 15%~100%RH

 15%~100%RH

 15%~100%RH

Working Temperature of Ultrasonic Probe

Common Type:-50℃~+80℃;High temperature type:Up to 250℃

Main Engine Size

186L*125W*171.5Hmm

186L*125W*171.5Hmm

236L*125W*171.5Hmm

236L*125W*171.5Hmm

Main Engine Weight

2.5kg

2.5kg

2.5kg

2.5kg

Intrinsically Safe Parameter

Ui:28VDC   Ii:93mA   Pi:0.65W   Ci:44nF   Li:11uH