Ultrasonic Level Meter

Ultrasonic Flow Meter

Ultrasonic flow meter is for liquid flow measurement. Inline or portable ultrasonic flowmeter is available. In stock and...
Hydrostatic liquid level sensor

Hydrostatic level transmitter;For water, oil or corrosive liquid level measurement;Range: 0-100 m level;4-20mA,HART ,Mod...

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 of ultrasonic sensor for level measurement
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

SILVER AUTOMATION INSTRUMENTS 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, 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)
Wet part Material	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
Power supply	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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Hydrostatic liquid level sensor