Liquid Level Sensor - ATEX

Technical data: HBLT-A2

HBLT-A2 capacitive liquid level sensors are used to measure liquid levels in industrial systems. The sensor transmits a current signal from 4 to 20 mA (4 mA when the transmitter does not register liquid - and 20 mA when the entire transmitter is surrounded by liquid).HBLT-A2 capacitive liquid level sensors are used to measure liquid levels in vessels.

The sensor is designed in stainless steel and can be used in corrosive environments. The sensor must be supplied with 24 V DC through an Ex-barrier, which must be an approved and certifided galvanically isolated interface barrier placed outside the hazardous area. The sensor is a 2-wire design with analog output with 4 mA (empti tank) and 20 mA (full tank). The analog output shall be connected to the Ex-barrier. The Ex-barrier is not sccope of supply.

The sensor can be set-up for liquid type in the HB-Tool which can be downloaded from our web-page. See HB-Tool. Diagnostic is as well a possibility with the tool. The programming must be carried out in an non hazardous area.

The sensor range include sensors for zone 0 and 1 according to ATEX/IECEx. The sensors can be used in device category 1G and temperature class T1...T6.

A 5 m cable with M12 plug type IEC61076-2-101 is included.

Product features
Applications
Specifications
Ordering code
Downloads

Product features

Temperature range: -40...+70°C.
Max pressure: 100 bar
ATEX / IECEx: Ex ia IIC T1…T6 Ga (Ta = -40°C to +70°C)
Excellent liquid and gas compatibility
Cost effective alternative to ultrasonic & radar sensor technologies
Works with reflective liquids
Will not fail due to vapor
No galvanic corrosion
Split design which makes it easy to install and make diagnostic.

Applications

Applications

Process plants
Storage tanks

Intrinsically Safe design:

Intrinsically Safe (IS) sensors are designed and wired to work on such a low current and voltage that it cannot possibly ignite flammable material. By limiting the energy available within the defined hazardous area, electrical equipment can operate safely even amid hazardous mixtures of gasses.

The HBLC sensor is designed for many kinds of liquidsbased on the dielectric constant. The liquid type is selected in the HB-Tool.

The measuring principle and the influence of the dielectric constant:

Capacitors are designed with minimum two conductors, where one of them is electric isolated. The dielectric constant are key for operation of capacitors, the capacity size is measured in pF.

Dielectric constant (Relative permittivity) is a unique value on a scale of 1 to 100. The value can be seen as a media’s DNA, because it`s unique and related to the molecular structure and polarization.

The Dielectric Constant is always greater than or equal to 1. The larger the dielectric constant, the more charge can be stored (like a battery).

The dielectric constant changes with temperature and pressure, the sensor comes with automatic temperature compensation calibrated/adapted to the measured media.

Type of sensors:

Sensor type Liquid type Dielectric constant

HBLC-CO2 CO2(R744), Butane (R600), Isobutane (R600A), Propane (R290) 1.5-2.0
HBLC-OIL PAO oil, Mineral oil, POE oil, PAG oil 2.0-4.0
HBLC-HFC R507, R410a, R407c, R404a, R22, R32, R134a, R1234yf, R1234ze 4.0-10.0
HBLT-A2 NH3, Water, R717, R718, Alchohol 10.0-80.0

Specifications

Connection diagram

Diagram sensor

Drawing

Thread: 1" BSPP

HBLT A2 ex

Thread: 3/4" NPT

HBLT A2U ex

Power supply
Voltage	12-28 V DC two wire
Max. current consumption	Max 20 mA
Plug connections	M12, 5 pins - DIN 0627
Output
Signal output	4...20 mA (AO)
Mechanical specifications
Material liquid parts	AISI 304 / PTFE
Material electronic parts	Nylon 6 (PA)
Environmental conditions
Max pressure	150 bar
Protection degree	IP65
Vibrations	IEC 68-2-6 (4g)
EMC	EN 61000
Ex area
IECEx classification	Ex ia IIC T1…T6 Ga
Device category	1G for Zone 0 & 1
Type of protection	ia
Gas resp. gas group	IIC
Temperature class	T1….T6
Ambient temperature	-40...+50°C/+70°C
When used in Ex-area the installation has to be carried out according to standards in force for the country in question.
The Equipment must be installed via an approved and certified galvanically interface barrier placed outside the hazardous area.

Ordering code

280 mm 1" BSPZone 1HBLT-A2-2.8-Z1 500 mm 1" BSPZone 1HBLT-A2-5-Z1 800 mm 1" BSPZone 1HBLT-A2-8-Z1 1000 mm 1" BSPZone 1HBLT-A2-10-Z1 1200 mm 1" BSPZone 1HBLT-A2-12-Z1 1500 mm 1" BSPZone 1HBLT-A2-15-Z1 1700 mm 1" BSPZone 1HBLT-A2-17-Z1 2200 mm 1" BSPZone 1HBLT-A2-22-Z1 3000 mm 1" BSPZone 1HBLT-A2-30-Z1 6” 3/4” NPTZone 1HBLT-A2-6U-Z1 8” 3/4” NPTZone 1HBLT-A2-8U-Z1 12” 3/4” NPTZone 1HBLT-A2-12U-Z1 15.3” 3/4” NPTZone 1HBLT-A2-15.3U-Z1 19.2” 3/4” NPTZone 1HBLT-A2-19.2U-Z1 23.1” 3/4” NPTZone 1HBLT-A2-23.1U-Z1 30” 3/4” NPTZone 1HBLT-A2-30U-Z1 35” 3/4” NPTZone 1HBLT-A2-35U-Z1 45” 3/4” NPTZone 1HBLT-A2-45U-Z1 55” 3/4” NPTZone 1HBLT-A2-55U-Z1 65” 3/4” NPTZone 1HBLT-A2-65U-Z1 85” 3/4” NPTZone 1HBLT-A2-85U-Z1 105” 3/4” NPTZone 1HBLT-A2-105U-Z1 120” 3/4” NPTZone 1HBLT-A2-120U-Z1 280 mm 1" BSPZone 0HBLT-A2-2.8-Z0 500 mm 1" BSPZone 0HBLT-A2-5-Z0 800 mm 1" BSPZone 0HBLT-A2-8-Z0 1000 mm 1" BSPZone 0HBLT-A2-10-Z0 1200 mm 1" BSPZone 0HBLT-A2-12-Z0 1500 mm 1" BSPZone 0HBLT-A2-15-Z0 1700 mm 1" BSPZone 0HBLT-A2-17-Z0 2200 mm 1" BSPZone 0HBLT-A2-22-Z0 3000 mm 1" BSPZone 0HBLT-A2-30-Z0 6” 3/4” NPTZone 0HBLT-A2-6U-Z0 8” 3/4” NPTZone 0HBLT-A2-8U-Z0 12” 3/4” NPTZone 0HBLT-A2-12U-Z0 15.3” 3/4” NPTZone 0HBLT-A2-15.3U-Z0 19.2” 3/4” NPTZone 0HBLT-A2-19.2U-Z0 23.1” 3/4” NPTZone 0HBLT-A2-23.1U-Z0 30” 3/4” NPTZone 0HBLT-A2-30U-Z0 35” 3/4” NPTZone 0HBLT-A2-35U-Z0 45” 3/4” NPTZone 0HBLT-A2-45U-Z0 55” 3/4” NPTZone 0HBLT-A2-55U-Z0 65” 3/4” NPTZone 0HBLT-A2-65U-Z0 85” 3/4” NPTZone 0HBLT-A2-85U-Z0 105” 3/4” NPTZone 0HBLT-A2-105U-Z0 120” 3/4” NPTZone 0HBLT-A2-120U-Z0

Downloads

Instruction manual - HBLT-A2

IECEx/ATEX Certificate - Zone 0

IECEx/ATEX certificate - Zone 1

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