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Fuel Level Sensor With Submersible Type For Fuel Tank In Model HPT604-LT

Fuel level sensor(oil tank level sensor) is designed based on the "submersible" shape, it is mainly used to measure the level, volume, fuel storage and fuel temperature of fuel tanks (underground storage tanks). With wireless terminals, remote monitoring solutions can be realized.

Application :

●Fuel tank or diesel tank

●Underground oil storage tank at gas station

●Diesel generators


●Irregular shape oil tank

01It can measure the liquid level, volume, oil storage and oil temperature of the oil tank.
02Compatible to measure the level of fuel tanks with different shapes.
03The problem of temperature drift and poor accuracy in the full temperature range is solved.
04"Investment type" design, low maintenance cost in later period.
05Free technical support, liquid level sensor manufacturer.

Fuel level sensor for fuel tanks in Holykell manufacturer

Technical Data


HPT604 (LT Type)

Pressure Range

0-0.1Bar…..5 Bar / 0-1M……..50m H2O Optional (See P1 page description)


200% F.S.

Burst Pressure

400% F.S.


≤ ±0.5%F.S (≥2m level range and between0-50 degree C);

≤ ±1.0%F.S (0.5m≤Level Range<2m level range and between0-50 degree C)

(Linearity Hysteresis

Including non-lin., rep. and hys.



Long Stability

≤ ±0.2 % of span/year

Temperature Range

-30 to +70 degree C

Temperature Accuracy

±1%F.S. (± 1 ℃)

Working Temp


Storage Temp


Temperature Compensation

0-50℃ (Range<100kPa);  -10℃~60℃(Range≥100kP)

Medium compatible

Compatible with SUS304 Stainless Steel

Electronic Wire

2 Wires          3 wires                                            4 wires


4~20mA        Double 4-20mA Level&Temp        RS485 Modbus RTU

Power Supply

10~30 V DC           12~30 Vdc                7~30 Vdc

Overload Voltage 

32Vdc                        32Vdc                   36Vdc

Polarity protection

Available for signal wires or Power wires each other reverse, unavailable signal and power wire reverse!  

Insulate resistance

>100M Ω@100V

Zero Temp. Drift

0.75%FS/℃(≤100kPa); 0.5%FS/℃(>100kPa)

FS Temp. Drift

0.75%FS/℃(≤100kPa); 0.5%FS/℃(>100kPa)

Electronic connection

Fixed cable and water proof IP68

Response time


Data overtime interval


Material of Housing

304 Stainless Steel

Material of Cells

316L Stainless Steel

Blind Zone of Probe

5 mm

Pressure Type

Gauge pressure

Certificate approving

ATEX intrinsic safety or ExdIICT6, TUV RoHS and CE Certificate approving

EMC Standard

EN 61326-1:2013; EN 61326-2-3:2013

EN 61000-6-2:2005; EN61000-6-4:2007+A1

Lighting Protection(optional functions)

Air conduction more than 8000V; external sensor more than 4000 Voltage protection.

Cable optional

Cable materials are optional according request, we offer 3 type special cable as follow:

PE Cable(Water Proof); PU Cable(Diesel Proof); FEP Cable(Anti-Corrosive for gasoline)


Net weight is about 0.35KG, Full Packing weight is about 1.0 KG (Excluding Cable)


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