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Ultrasonic level Transducer

Ultrasonic level Transducer

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Ultrasonic level transducer functionality is the same as the radar system. From ultrasonic profiling to level monitoring, ultrasonic sensors are used in a wide range of applications including converting electrical energy into acoustic waves and vice versa.

The working principle of ultrasonic level indicator

The ultrasonic level sensor works by the “time of flight” principle when it comes to measuring level. Sound waves are sent by the device at a higher frequency of about 20kHz to 1GHz. These sound waves bounce back from the product surface, creating an echo that is redirected to the sensor. Thereafter, the sensor determines the level by calculating the time taken by the echo to return back. The ultrasonic level sensor works in both liquids and solids level measurement.

The main advantage of ultrasonic level transmitter is that the transducer doesn’t make physical contact with the process material since it has no moving parts. This typical property is very useful for measuring tanks’ levels with boiling, corrosive and hazardous chemicals.

On the other hand, the return signal can be affected by things like heavy vapors, powders, foam, surface turbulence and also ambient noise. Moreover, the temperature can limit ultrasonic device functionality – ultrasonic level transducer cannot operate on high-pressure areas or vacuum. Finally, the level transmitter isn’t convenient if the depth of the tank is high or the produced echo is absorbed or dispersed.

Technical Specification of Ultrasonic level Transducer

Level Range:

0-4m, Blank distance : 0.20m

0-6m, Blank distance : 0.25m

0-8m, Blank distance : 0.30m

0-12m, Blank distance : 0.50m

0-20m, Blank distance : 0.80m

0-30m, Blank distance : 1.20m

0-40m,Blank distance : 1.5 m

Accuracy: 0.2% of span

Output: 4-20mA

Output Load: 0-500Ω

Display: 4 Digits LCD(All types have displays)

Temperature compensations: Automatic

Pressure Rating: 0.1Mpa

Cable Gland: PG13.5

Beam Angle: 8°, 5°(3db)

Sensor Material: ABS &PVC or PTFE

Protection level: IP67

Installation: Thread, Flange, Bracket

Parameter setting: 3 Induction buttons

Temperature Range : -40 ~75,HLT1 -20 ~75

Sampling time: 1second (adjustable)

Model Selections

Item

Code

Specifications

General

HL

HL Ultrasonic Level meter

Types

T

2-wire series, compact display version

N

3-wire series, compact display version

R

RS485 series, compact display version

U

4-wire series, compact display version

T1

ExiaIICT6 ,2-wire series, intrinsically safe explosion-proof

F

Standard series, remote display version, standard 10m cable

M

Multi-functional, remote display version, standard 10m cable

VT

2-wire series, no display,24V DC,4-20Ma,cable 10m

VT-T

2-wire series, no display,24V DC, Blue tooth config.cable10m*1

VR

4-wire,no display,RS486,modbus RTU, cable 10m *2

Range

04

0-4m

06

0-6m

08

0-8m

12

0-12m

20

0-20m

30

0-30m

40

0-40m

Housing Colors &Material

P

Plastic all

G

Aluminum, green coloronly for HLT, HLN, HLR series

B

Aluminum, blue colorfor all compact series except HLR series

K

Aluminum, blue & gray only for HLT series

V

Aluminum, white only for HLT series

Wet part Material

S

ABS&PVC ((Simple anti-corrosion)

F

PTFE Strict anti-corrosion

Process connection

2

G2 screw (only for the range less than 8m)

3

DN50 flange (only for the range less than 6m)

4

DN65 flange (only for the range less than 8m

5

DN80 flange (only for the range less than 12m

6

DN100 flange(all)

7

DN150 flange(all

8

DN200 flange(all

Output

C0

4-20mA(All)

C2

RS485-Modbus protocol(only for HLR,HLVR and remote series)

C3

RS485-Profibus-DP protocol(only for HLM series)

C4

Hart protocol (only for HLUHLM series)

Switch Output

0

None

2

2 SPDT (only for HLU HLF HLM HLG series)

4

4 SPDT(only for HLM series

6

6 SPDT (only for HLM series

Power supply

D

DC24V

A

AC220V

*1HLVT-T is can be figured by blue tooth, the software is not free, consult sales for price.

*2 HLVR input power supply can be DC 3.5-5V, DC9-12V,DC 20-32V option

Conclusion

The ultrasonic level meter has a wide range of applications. These devices are simple, cost-friendly and can measure precise data without compromising your products. So they are a good choice for the water, food and beverage industries.

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