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Useful info

Liquid Level Sensor - Wire

Technical data: HBLT-W3-Wire & HBSLT-W3-Wire

The HBLT-W3-Wire and HBSLT-W3-Wire are innovative capacitive Wire Sensors designed for accurate liquid level measurement in industrial refrigeration systems. Built with a 1,5 mm insulated stainless steel wire, they can withstand high pressure and low temperatures, providing a reliable and durable solution.

Key features

  • Liquid temperature range: Operate across a temperature range of -60°C to 60°C (-76°F to 140°F).
  • Pressure tolerance: Rated for pressures up to 100 bar (1450 psi).
  • Power supply: The sensor operates on a 24 V DC power supply.
  • Flexible length: The sensor wire can be adjusted from 250 mm to 6000 mm, providing flexibility for various applications
  • LED indicators: Provides clear visual indicators for power supply and alarm status.
  • Split design: Simplifies installation and diagnostics; electronic parts can be removed with two screws.
  • Easy configuration: Configuration with a PC using HB Tool software.

Please be aware: If the sensor is to be used in water or other liquid-conducting fluids where high accuracy is crucial, a special kit is required. This kit serves to seal the open end of the wire, thereby eliminating electrical contact.

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Product features

Flexible sensor wire, which is adjustable to a length of 250 to 6000 mm.
Sturdy and reliable design with a standard 4-20 mA output signal.
Designed for the refrigeration industry – max. pressure up to 100 bar.
Split design which makes the sensor easy to install and service. The electronic part can easily be separated from the mechanical part by loosening the threaded union.
Simple calibration for the specified length.
Alarm output can be set in a range from 10% to 100%.
Compact design that minimises shipment costs.
Can be used for marine applications, since measurement is not affected by contact with the metal surface of the overflow pipe.
Measures NH3 & HFC/HFO refrigerants.

Applications

When using a level sensor for measuring Ammonia in a compact plate and shell heat exchanger or other systems with turbulent conditions, we have new recommendation based on recent experience:

For Stand-pipes with stable conditions (smooth changes in the level):

• Use a HBLT-Wire or a HBLT-A3 probe sensor.

For Stand-pipes with turbulent conditions (a lot of turbulence, boiling, foaming, and receiving liquid from the top):

• Use a HBLT-A3 sensor, or

• Use only a HBLT-Wire sensor when you have it mounted in an inner guide-tube of e.g. DN25 as illustrated. 
The guide-tube will reduce the turbulence and the foaming so you will have a good measurement.

• If the HBLT-Wire sensor is already mounted under these conditions WITHOUT a guide-tube,
you can set the filter time between 60-120 seconds to dampen the signal from the turbulent conditions.

For Alfa Laval U-turn evaporator: Use a HBLT-A3 sensor.

Specifications

Standard versions

All sensors has an analog output

Sensor with M12 connector

Spec 1

 

Control versions

Spec 2

  • /C for modulating valve
  • /S for stepper motor
  • /PWM for pulse modulating valve

 

Drawing

HBLT Wire measure

Power supply
Voltage24 AC/DC + 10%
Max. possible resistance500 ohm
Max consumption600 mA
Plug connectionDIN 0627 - 5 pins
Output
Analog output 4-20 mA, 1 A
Transsistor output - alarmPNP, 1 A
Contact function - alarmNO/NC (Programmable)
Environmental conditions
Ambient temperature-30...+50°C
Refrigerant temperature-60...+60°C
Max. pressure100 bar
Protection degreeIP65
VibrationsIEC 60068-2-6 (4g)
RefrigerantsR22, R134A, R404A, R410A, R507, R717 & R718, R1234 and others, but not suited for R744, R290 and R600a
Mechanical specifications
Thread connections3/4” NPT 
Adapter - 3/4" NPT / 1" BSPP (option)HBS/ADAP/8/2
SizeSe dimensional drawing
Material - liquid partsAISI 304 / PTFE
Material - electronic partsDifferent plastics
House typeAngle
Approvals
EMC-EmissionEN 61000-3-2
EMC-ImmunityEN 61000-4-2
Cable
HBxC-M12/5 5 m - 5 wire
Indication
LED indicationGreen, yellow & Red LED
Configurations
ConfigurationPC tool

Ordering code

LengthThread typeValve typeOrdering code
250-4000 mm 3/4" NPTHBLT-W3-Wire-2
250-4000 mm 3/4" BSPPHBLT-W3-Wire-6
250-6000 mm 3/4" NPT HBLT-W3-Wire-6-2
250-6000 mm 3/4" BSPPHBLT-W3-Wire-6-6
Electronic part for HBLT-W3-Wire HBLT-W3-Wire-EL
250-4000 mm 3/4" NPTModulatingHBSLT-W3-Wire/C-2
250-4000 mm 3/4" BSPPModulatingHBSLT-W3-Wire/C-6
250-6000 mm 3/4" NPT ModulatingHBSLT-W3-Wire/C-6-2
250-6000 mm 3/4" BSPPModulatingHBSLT-W3-Wire/C-6-6
Electronic part for HBSLT-W3-Wire/C ModulatingHBSLT-W3-Wire/C-EL
250-4000 mm 3/4" NPTStepperHBSLT-W3-Wire/S-2*
250-4000 mm 3/4" BSPPStepperHBSLT-W3-Wire/S-6*
250-6000 mm 3/4" NPT StepperHBSLT-W3-Wire/S-6-2*
250-6000 mm 3/4" BSPPStepperHBSLT-W3-Wire/S-6-6*
Electronic part for HBSLT-W3-Wire/S StepperHBSLT-W3-Wire/S-EL*
250-4000 mm 3/4" NPTPWMHBSLT-W3-Wire/PWM-2*
250-4000 mm 3/4" BSPPPWMHBSLT-W3-Wire/PWM-6*
250-6000 mm 3/4" NPT PWMHBSLT-W3-Wire/P-6-2*
250-6000 mm 3/4" BSPPPWMHBSLT-W3-Wire/P-6-6*
Electronic part for HBSLT-W3-Wire/PWM PWMHBSLT-W3-Wire/PWM-EL*
250-4000 mm 3/4" NPT HBLT-W3-Wire-2-IP* **
250-4000 mm 3/4" BSPP HBLT-W3-Wire-6-IP* **
Electronic part for HBLT-W3-Wire HBLT-W3-Wire-EL-IP* **
Accessories
1"BSPP -> 3/4"BSPP adapter with alu gasket HBS/ADAP/8/6
Spare Parts
Weight for HBLT-W3-Wire HBLT-W3-WIRE-PLUMB
*Stepper motor, PWM & IP versions are without display.
**HBLT-W3-WIRE-IP is a low temperature version.

Downloads

Instruction manual - HBLT-Wire

Drawing - STEP file - HBLT-Wire

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