SILVER AUTOMATION INSTRUMENTS LTD.

Ultrasonic Level Meter

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HL Ultrasonic level meter for continuous non-contact level measurement in liquids and solids. It consists of probe and host, both of which are plastic leak-proof structure. The HL series can be widely applied to the metallurgical, chemical, electricity and oil industries.

Principle
The sensor of the meter pulses in the direction of the product surface. There, they are reflected back and received by the sensor. The meter measures the time t between pulse transmission and reception. The meter uses the time t (and the velocity of sound c) to calculate the distance D between the sensor membrane and the product surface: d = c •t/2. As the device knows the installation height H from a user entry, it can calculate the level as follows: L = H – D .

B: blacking distance
D: distance value
L: level value
H: installation height
F: full span value
L=H-D

An integrated temperature sensor compensates for changes in the velocity of sound caused by temperature changes. Calibration Enter the empty distance H and the span F to calibrate the device.

Blanking distance: Span F may not extend into the blanking distance B.  Level echo from the blanking distance cannot be evaluated due to the transient characteristics of the sensor.

Technical Specifications

LevelRange:

0-4m, Blankdistance : 0.20m

0-6m, Blankdistance : 0.25m

0-8m, Blankdistance : 0.30m

0-12m, Blankdistance : 0.50m

0-20m, Blankdistance : 0.80m

0-30m, Blankdistance : 1.20m

0-40m,Blankdistance : 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

PressureRating:   0.1Mpa

Cable Gland:   PG13.5

Beam Angle:   8°, 5°(3db)

SensorMaterial:   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)


Meter Types

Type

HLT, 2-wire,

HLN,3-wire

HLU,4-wire,

HLT1,2-wire*2

Construction

Compact

Compact

Compact

Compact

Power

DC20-32V,

≥30mA

DC20-32V,

≥60mA

DC20-32V,≥60mA;AC85-265V≥50mA

DC21-27V,≥35mA

Explosion Proof

No

Yes,Exia IICT6

Housing Material

ABS orAluminum

Aluminum

Relay

No

2  (High &Low)*1

NO

Display

With integral display


Type

HLR,RS485,

HLF Standard

HLM Functions

Construction

Compact

Remote

Remote

Power

DC24(±10%),≥60mA

DC24(±10%),0.1A;AC85-265V,≥50mA

Housing Material

ABS orAluminum

ABS

ABS

Relay

No

2  (High &Low) *1

2,4,6 Relays

Communication

RS485,Modbus

RS485 option

RS485/Hart

Display

With integral display

With Remote Display

*1 Relay output specifications: 5V 250VAC/30VDC
*2 HLT1 only have 0-4m and 0-8m level range.

Type

HLVT

HLVT-T

HLVR

Construction

Compact

Compact

Compact

Power

DC24(±10%),≥30mA

DC3.5-5V,DC9-12V,DC20-32V

Relay

No

Communication

No

Blue Tooth

RS485 MODBUS RTU

Display

No display


Model Selections

Item

Code

Specifications

General

HL

HL Ultrasonic Level meter

Types

T

2-wire series, compactdisplayversion

N

3-wire series, compactdisplayversion

R

RS485 series, compactdisplayversion

U

4-wire series, compactdisplayversion

T1

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

F

Standard series, remotedisplayversion, 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

HousingColors &Material

P

Plastic(all)

G

Aluminum, green color(only for HLT, HLN, HLR series)

B

Aluminum, blue color(for 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)

Processconnection

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 HLU,HLM 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.


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