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.

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

  • 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 24V 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.

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*
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.

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