Ultrasonic Level Sensor for Tanks
Ultrasonic Level Meter Overview
HL Ultrasonic level meter is non contact liquid level sensor for liquids and solids level measurement. Ultrasonic sensor consists of probe and host, both of which are plastic leak-proof structure. The HL series ultrasonic sensor for level measurement can be widely applied to the metallurgical, chemical, electricity and oil industries. It can work as ultrasonic fuel level sensor, ultrasonic oil tank level sensor, and ultrasonic water tank level meter.etc.We are a China ultrasonic level sensor supplier, our ultrasonic level sensor is provided with digital display to indicate level and easy configuration. The ultrasonic level indicator can be integrated with the ultrasonic sensor, or separated with the level sensor. It not only works as ultrasonic liquid level sensor, it can be used as ultrasonic level sensor for tanks. Please specify the medium and level range when buy ultrasonic level sensor.
Principle of Ultrasonic Level Meter
The sensor of the ultrasonic liquid level meter pulses in the direction of the product surface. There, they are reflected back and received by the level sensor. The ultrasonic level sensor measures the time t between pulse transmission and reception. The ultrasonic level 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 distanceD: distance valueL: level valueH: installation heightF: full span valueL=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 for ultrasonic level sensor: 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.HL Series Ultrasonic Level Meter Technical SpecificationsLevel 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 spanOutput: 4-20mAOutput Load: 0-500Ω
Display: 4 Digits LCD(All types have displays)Temperature compensations: AutomaticPressure Rating: 0.1MpaCable Gland: PG13.5Beam Angle: 8°, 5°(3db)LevelSensor Material: ABS &PVC or PTFEProtection level: IP67Installation: Thread, Flange, BracketParameter setting: 3 Induction buttonsTemperature Range :
-40 ~75℃,HLT1 -20 ~75℃Sampling time: 1second (adjustable)
Ultrasonic Level Meter TypesTypeHLT, 2-wire,HLN,3-wireHLU,4-wire,HLT1,2-wire*2
ConstructionCompactCompactCompactCompact
Power
DC20-32V,≥30mADC20-32V,≥60mADC20-32V,≥60mA；AC85-265V≥ 50mA
DC21-27V,≥ 35mA
Explosion ProofNoYes,Exia IICT6
Housing Material
ABS or AluminumAluminum
RelayNo
2 (High &Low)*1NO
DisplayWith integral ultrasonic level indicator
TypeHLR,RS485,HLF StandardHLM Functions
ConstructionCompactRemoteRemote
PowerDC24(±10%),≥ 60mA
DC24(±10%),0.1A;AC85-265V,≥ 50mA
Housing Material
ABS or AluminumABSABS
RelayNo2 (High &Low) *12,4,6 Relays
CommunicationRS485,ModbusRS485 optionRS485/Hart
DisplayWith integral displayWith Remote Display
*1 Relay output specifications: 5V 250VAC/30VDC*2 HLT1 Ultrasonic level sensor only have 0-4m and 0-8m level range.
Ultrasonic level sensor Model SelectionsItemCodeSpecifications
GeneralHLHL Ultrasonic Level meter
TypesT2-wire series, compact version levelsensor
N3-wire series, compact version levelsensor
RRS485 series, compact version levelsensor
U4-wire series, compact version levelsensor
T1ExiaIICT6 ,2-wire series, intrinsically safe explosion-proof
FStandard series, remote version, standard 10m cable
MMulti-functional series, remote version, standard 10m cable
LevelRange040-4m
060-6m
080-8m
120-12m
200-20m
300-30m
400-40m
Housing Colors &MaterialPPlastic（all）
GAluminum, green color（only for HLT, HLN, HLR series）
B
Aluminum, blue color（for all compact series except HLR series）
KAluminum, blue & gray（only for HLT series）
VAluminum, white（only for HLT series）
Wet part MaterialSABS&PVC ((Simple anti-corrosion)
FPTFE（Strict anti-corrosion）
Process connection1G1½ screw (only for the range less than 6m)
2G2 screw (only for the range less than 8m)
3DN50 flange (only for the range less than 6m)
4DN65 flange (only for the range less than 8m）
5DN80 flange (only for the range less than 12m）
6DN100 flange(all)
7DN150 flange(all）
8DN200 flange(all）
OutputC04-20mA(All)
C2RS485-Modbus protocol(only for HLR and remote series)
C3RS485-Profibus-DP protocol(only for HLM series)
C4Hart protocol (only for HLU，HLM series)
Switch Output0None
22 SPDT (only for HLU HLF HLM HLG series)
44 SPDT(only for HLM series）
66 SPDT (only for HLM series）
Power supplyDDC24V
AAC220V