Principle of Ultrasonic solid level meter
Ultrasonic level sensors for solid objects
follow a principle similar to those for liquids but the measuring object, in
this case, is solids. The ultrasonic waves produced by these sensors strike the
level of any solid and get deflected backward. The sensors measure the echo
time taken by these waves and calculate the distance and thus the solid level
accordingly.
Features of Ultrasonic solid level
transmitter
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1- These level sensors can detect the level of a
wide range of solid objects from a distance of up to 20 meters.
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2- No physical contact with the solid is
required.
-
3- Precise level measurement in a wide
range of temperature conditions.
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4- Strong ability of anti-interference.
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Digital level transmitters with output 4-20mA, possible with HART, MODBUS or PROFIBUS-DP
Application of ultrasonic level transmitter
These soild level sensors can be used for bulk solids
and thus find its application for storage tanks, food industries, sumps,
industrial refrigeration, for boreholes and etc. These sensors can be used to
locate the position of fish and scuba divers in seas and the location of
submarines below water level are also possible with these ultrasonic sensors.
Technical Specification of Ultrasonic solid level sensors
|
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)
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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
|
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08
|
0-8m
|
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12
|
0-12m
|
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20
|
0-20m
|
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30
|
0-30m
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40
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0-40m
|
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Housing Colors &Material
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P
|
Plastic （all）
|
|
G
|
Aluminum,
green color（only for HLT, HLN,
HLR series）
|
|
B
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Aluminum, blue color（for all compact series except
HLR series）
|
|
K
|
Aluminum,
blue & gray （only for HLT series）
|
|
V
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Aluminum,
white （only for HLT series）
|
|
Wet part Material
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S
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ABS&PVC
((Simple anti-corrosion)
|
|
F
|
PTFE （Strict
anti-corrosion）
|
|
Process connection
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2
|
G2
screw (only for the range less than 8m)
|
|
3
|
DN50
flange (only for the range less than 6m)
|
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4
|
DN65
flange (only for the range less than 8m）
|
|
5
|
DN80
flange (only for the range less than 12m）
|
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6
|
DN100
flange(all)
|
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7
|
DN150
flange(all）
|
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8
|
DN200
flange(all）
|
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Output
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C0
|
4-20mA(All)
|
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C2
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RS485-Modbus
protocol(only for HLR,HLVR and remote series)
|
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C3
|
RS485-Profibus-DP
protocol(only for HLM series)
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C4
|
Hart
protocol (only for HLU，HLM series)
|
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Switch Output
|
0
|
None
|
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2
|
2
SPDT (only for HLU HLF HLM HLG series)
|
|
4
|
4
SPDT(only for HLM series）
|
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6
|
6
SPDT (only for HLM series）
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Power supply
|
D
|
DC24V
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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
