Ultrasonic Non-invasive level switch (for closed container)

Ultrasonic non-invasive level switch is a new type of liquid level measurement and alarm device. It is mainly used to detect the liquid level of the closed container, realize the upper and lower limit alarms or monitor whether there is liquid in the pipeline, this technology is not affected by factors such as medium density, dielectric constant, conductivity, reflection coefficient, pressure, temperature, precipitation, etc. It is suitable for liquid level process control in medicine, petroleum, chemical industry, electric power, food and other industries, especially suitable for applications with sanitary requirements, high pressure, radioactivity, toxicity, corrosion and other special occasions.

Product Description

Working principle

The liquid level sensor couples high-frequency ultrasonic pulses to the container wall, the pulses penetrate container wall to propagate in the liquid, and are reflected by the inner surface of the container, detect and calculate the characteristics of the reflected signal, and transmit the measured data to the on-site secondary instrument in real time through the RS485 interface, it can be judged whether the liquid level has reached the position where the level sensor is installed.

Product features

Type

Feature

UNI200-LC01

lc1 suo

● Wide range of applications: can be used for toxic, highly corrosive, high pressure, various complex working conditions, and various liquid media measurement in explosive gas environments.
● When installation not need stop production, not need clear tank, no need fire; easy installation and simple operation.
● Operate the controller with the magnetic pen.

UNI200-LC02

lc2 suo

● Advanced signal processing method, can overcome the influence of temperature drift, stronger ability of anti-interference.
● The new installation method, adsorption type + adhesive type, can improve the stability of the probe work.
● Built-in temperature sensor, 24-hour monitoring temperature changes, temperature compensation can also be performed.
● Adopt single-probe mode, which is more convenient for installation and avoids repeated calibration.
● Operate the controller with the magnetic pen.

 

Application conditions

  • Applicable medium: Pure liquid, emulsion liquid, suspension liquid, etc. Measurable medium list as follow:

C3,  Acetone, Propylene, Oxalic acid, Diesel, Nitromethylaniline, Butadiene, xylene, sulfuric acid, vinyl chloride, kerosene, unsymmetrical dimethyl hydrazine, gasoline, light hydrocarbons, light oil, caustic soda solution, liquid ammonia, Liquefied carbon dioxide, liquefied gas, liquid chlorine, Ethanol, ether, vinyl, crude oil, ethylene oxide, methylamine,Toluene, methanol, Methyl tert-butyl ether, dimethyl ether, Phenol water, Freon, Banana water, Nitric acid, Bromine, salt brine, hydrochloric acid, edible oil, Tetrachloroethylene, Anhydrous hydrogen fluoride, vegetable oil.

  • Material of container: carbon steel, stainless steel, various hard metals, glass fiber reinforced plastic, epoxy resin, hard plastic, ceramics, glass, hard rubber or other composite material.
  • Measurable wall thickness of tank: 2 ~ 70 mm.
  • Applicable tank’s shape: Horizontal tank, spherical tank, trough tank, vertical tank, etc.

Dimension of level controller UNI200-LC01

uni200 lc01 dimension

 

Dimension of level controller UNI200-LC02

uni200 lc02 dimension

 

Dimension of double probe

double probe dimension

 

Dimension of Single probe

single probe dimension

 

Technical specification

Model UNI200-LC01 UNI200-LC02
Type ●Ordinary explosion-proof type
●Explosion-proof type (Two monitoring points)
●Intrinsically Safe
●Intrinsically safe (Two monitoring points)
Accuracy ±2 mm
Measurable wall thickness of tank ≤ 70 mm
Output signal Liquid level alarm, 4 ~ 20 mA ( for Intrinsically Safe)
Relay capacity DC30V 6A / AC250V 6A
Power supply DC24V
Power 1 W 2 W
Electrical connection Configure according to the model selection
Diameter of threading hole φ8 mm (φ6 ~ 8 mm )
Adapter cable diameter
Explosion-proof Exd IICT6 Gb Ex ia IICT Ga
Shell material cast aluminium alloy
IP grade IP67
Applicable place Other explosive gas environment except for coal mine
Ambient temperature -50 ~ +70℃
Ambient humidity 15% ~ 100%RH
Operation temperature of Ultrasonic level sensor Ordinary type: -50 ~ +80℃, High type temperature type: up to 200℃
Size of converter 236 / 186 * 125 * 171.5 mm 155 * 241 * 129.4 mm
Weight of converter 2.5 Kg 2.6 Kg
Communiction distance of Handle controller NA 3 m
Intrinsically safe parameter Ui: 28VDC  Li:93Ma  Pi:0.65W  Ci:44Nf   Li: 11uH

 

Installation diagram for UNI200-LC01   ( Spherical tank, Double probe, one alarm point )

uni200 lc01 mtdr

Item Part Name Connection
specification
QTY Remark
Cable entry Configure according to Model selection 3 Contain mounting bracket and “U” type clamp
1 Local controller Configure according to Model selection 1
2 Galvanized tube User configure User provide
3 Explosion-proof wiring box 1 Probe and cable assembly
4 Explosion-proof flexible tube G 1/2 3
5 Right angle connector 2
6 Ultrasonic probe and sucking disc 2
7 Explosion-proof flexible tube User configure 3 User provide

Installation attentions for UNI200-LC01:

1)on the tank body, the area which the probe contacts shall be polished to smooth and no rust. When installing the suction cup, the wave-emission face of the probe must be coated with silicone grease.
2) The ultrasonic probe and cable assembly (including item 3, 4, 5, and 6) have been assembled before leaving factory. Items 2 and 7 need to be provided by the user.
3) On the vertical tank, the high-level alarm ultrasonic probe is recommended to be installed near the spiral ladder for easy installation and maintenance. The ultrasonic probe signal line is inserted into the galvanized pipe and then connected to the controller along the spiral ladder.
4)After the wiring is completed, the explosion-proof packing culvert at the instrument’s cable entry must be sealed with the configured explosion-proof cement.
5)Explosion-proof flexible pipes are respectively connected to the cable entry of the controller. After installation, the controller shall be higher than the horizontal galvanized pipes on its both sides.
6)The connection specifications of the explosion-proof flexible pipe and the galvanized pipe shall be consistent with the actual selection requirements (cable entry is reserved on the instrument), and the joints between the pipe fitting and the instrument must be done treatment of waterproof and explosion-proof.

 

Installation diagram for UNI200-LC02 ( Horizontal tank, single probe, one alarm point )

uni200 lc02 mtdr

Item Part Name Connection
specification
QTY Remark
1 Controller 1
Cable entry 4
2 Galvanized tube User configure User provided
3 Digital Probe components M20*1.5 (F) 1
4 Explosion-proof flexible tube User configure User provided
5 Probe cable User configure User provided

 

Installation attentions for UNI200-LC02:

1) The digital ultrasonic probe provides adapter specification, adapter need to be equipped by the customer, When wiring, remove the adapter first, then re-install and tighten it after threading.
2) Items 2, 4 and 5 need to be provided by the user.
3) On the tank, the high-level alarm ultrasonic probe is recommended to be installed near the spiral ladder for easy installation and maintenance. The ultrasonic probe signal line is inserted into the galvanized pipe and then connected to the controller along the spiral ladder.
4) Explosion-proof flexible pipes are respectively connected to the cable entry of the controller. After installation, the controller shall be higher than the horizontal galvanized pipes on its both sides.
5) The connection specifications of the explosion-proof flexible pipe and the galvanized pipe shall be consistent with the actual selection requirements (cable entry is reserved on the instrument), and the joints between the pipe fitting and the instrument must be done treatment of waterproof and explosion-proof.
6) The meter body must be well grounded.

 

Wiring diagram of Level controller ( one alarm point, 4-wire system )

wiring terminal 01

 

Wiring diagram of Level controller (with convertor )

wiring terminal 02

 

Wiring diagram of Level controller ( 2 alarm points)

wiring terminal 03

 

Wiring diagram of Level controller ( for UNI200-LC02 )

wiring terminal 04

 

Application case

uni200 lc mt

uni200 lc01 mt        uni200 lc02 mt

 

 

 

 

FAQ

Answer : Please send your question or enquiry to our email: sales@hginstrument.com, we will forward the questions to the related engineer.

Answer :  Please communicate with the sales about the return procedure before returning product.

Answer :  The delivery time depends on the order quantity and product specification.  If the product’s specification is conventional ( not special ),  delivery time is 5 or 7 working days for order quantity ≤ 10 pieces;  delivery time is 2 or 3 working weeks for order quantity 15 ~ 30 pieces. 

Answer :  by Courier,  by Sea or by Air

Answer :  Yes,  Generally warranty is one year.

Answer :  From year 2015  to year 2021,  average annual sales is RMB 350 million ( about USD 54.7 million )

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