HBProducts | Liquid Level Sensors | IECEx & ATEx Sensors Zone 0 & 1| Ammonia Wire
Technical data: HBLT-W3-Wire & HBSLT-W3-Wire
HBLT-W3-Wire and HBSLT-W3-Wire are the latest version of capacitive wire sensors for liquid level measurement. The sensor is typically used in industrial refrigeration systems and other industrial applications. They are useable in ammonia, HFC/HFO/CFC, and water but not in oil, hydrocarbons, and CO2. For these liquids with a low dielectric constant the HBLT-FLEX must be used.
The sensor has no dead zone and can be used for lengths from 250 mm to 4 or 6 m. It must be installed in a standpipe or in a pipe built into a vessel with a diameter from DN 25 to DN100 (1” to 4 “).
Both sensors have a 4-20 mA analog output signal, which is proportional to the liquid level. Its output signal is 4 mA for an empty container and 20 mA for a full container.
The HBSLT has a built-in controller and a cable output supplementing the M12 output. This cable is used for direct valve control. Alternatively, HBLT-W-Wire can be used in connection with the HBLT-C1 controller or a PLC for controlling pumps and valves.
The sensor element consists of a 1.5mm insulated stainless steel wire. The wire is provided in 4 or 6 m length and can be shortened on site with diagonal cutters or other pliers. When cut to length the sensor must be setup to the actual length by using the HB tool.
This latest version has a new counterweight where the wire pass through without electrical connection. This construction ensures a linear measurement all the way from the end of the wire below the counterweight to the top.
If the sensor must be used in water or other liquid conducting fluids and high accuracy is needed a special kit is needed. The function of the kit is to close the open end of the wire to eliminate the electrical contact.
Product features
- Temperature range: -40...+70°C.
- Max pressure: 150 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
- 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 |
Note: When used in EX-area the installation has to be carried out accourding to standards in force for the country in question.
The equipment must be electrically connected via an approved and certified galvanically isolated interface barrier placed outside the hazardous area.
Specification
| Power supply | Output | ||
| Voltage | 12-28 V DC two wire | Signal output | 4...20 mA (AO) |
| Max. current consumption | Max 20 mA | Mechanical specifications | |
| Plug connections | M12, 5 pins - DIN 0627 | Material liquid parts | AISI 304 / PTFE |
| Ex area | Material electronic parts | Nylon 6 (PA) | |
| IECEx classification | Ex ia IIC T1…T6 Ga | Environmental conditions | |
| Device category | 1G for Zone 0 & 1 | Max pressure | 100 bar |
| Type of protection | ia | Protection degree | IP65 |
| Gas resp. gas group | IIC | Vibrations | IEC 60068-2-6 (4g) |
| Temperature class | T1….T6 | EMC | EN 61000 |
| 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
| Length | Thread type | ATEX/IECEx approval | Ordering code |
|---|---|---|---|
| 250-4000 mm | 3/4" NPT | Zone 1 | HBLT-W3-Wire-2-EX |
| 250-4000 mm | 3/4" BSPP | Zone 1 | HBLT-W3-Wire-6 -EX |
| 250-6000 mm | 3/4" NPT | Zone 1 | HBLT-W3-Wire-6-2-EX |
| 250-6000 mm | 3/4" BSPP | Zone 1 | HBLT-W3-Wire-6-6-EX |
| Electronic part for HBLT-W3-Wire-EX | Zone 1 | HBLT-W3-Wire-EL-EX | |
| Accessories | |||
| 1"BSPP -> 3/4"BSPP adapter with alu gasket | HBS/ADAP/8/6 | ||
| Spareparts | |||
| Weight for HBLT-W3-Wire | HBLT-W3-WIRE-PLUMB |
Download
- IECEx/ATEX Certificate
- Instruction manual - HBLT-Wire
- Drawing - STEP file - HBLT-Wire
- Instruction manual
- Instruction Manual Supplement Ex/ATEX Products
Realated Products
Use: For Tanks and Standpipes
Liquid: NH3, Water & Alchohol | Code: HBLT-A3-EX
Use: For low Installation Heights
Liquid: CO2, HFC, HFO & CFC | Product Code: HBLT-FLEX-EX
Use: For Tanks and Standpipes
Liquid: CO2, butane & Probane |Code:HBLC-CO2-EX
Use: For Tanks and Standpipes | Liquid: HFC, HFO & CFC
Product Code: HBLC-HFC-EX
Use: For Standpipes | Liquid: NH3, Water & Alchohol
Product Code: HBLT-W3-Wire-EX
Use: For Tanks and Standpipes | Liquid: Oil
Product Code: HBLC-OIL-EX
HB Products offers a wide range of capacitive level sensors for refrigeration and industrial use. Due to the capacitive principle the sensors are optimized and calibrated for different groups of liquids and different working conditions. All types are suited for measuring of liquid levels in gas or air.
Liquid Level Sensors Series Products include : Oil level Sensors , HFC, HFO & CFC Sensors , NH3, Water & Alcohol Sensors , CO2 ,Butane , Isobutane & Propane sensors , IECEx & ATEx Sensors -Zone 0&1 , Liquid Level Sensors Accessories etc.
HBProducts Include: Vapor Quality Sensors , Liquid Level Switches , Liquid Level Sensors , Safety/Leakage Detection , Demand Defrost , Pressure & Temperature Sensors , Motorized Control Valves , IECEx & ATEX Sensors , Miscellaneous etc.
For special media : Ammonia , CO2（Carbon Dioxide） , HFC /HFO ,Oil , Defrost and so on.