NH3 Refrigerant Level Sensor (wire)

Technical data: HBLT-Wire

HBLT-wire is a capacitive sensor for level measurement of NH3 refrigerant in industrial refrigeration systems.The sensor has an output signal of 4-20 mA, which is proportional with 0 and 100%.Its output signal is 4 mA for an empty container and 20 mA for a full container.HBLT-wire can be adjusted in length to the current application.The sensor element consists of a 2mm steel wire as well as a Teflon tube.Both parts are provided with a length of 4 m and can be shortened with diagonal cutters or other pliers.HBLT-wire can be used in connection with the HBLT-C1 controller for controlling pumps.

 

Product features

Flexible sensor wire, which is adjustable to a length of 600 to 4000 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 refrigerants (R22, R134A, R404A, R410A, R507, R717 & R718).

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-A1 rod-style sensor. For Stand-pipes with turbulent conditions
(a lot of turbulence, cooking, foaming, liquid from the top):

• Use a HBLT-A1 rod-style 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 dampen the turbulence and the foaming and you will have a good
measurement.

• If HBLT-Wire sensor is already mounted under these conditions WITHOUT a guide-tube,
do eventually set the filter time function between 60-120 seconds to dampen the signal from the
turbulent conditions. For tank/drum installation:

• Use a HBLT-A1 rod-style 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 dampen the level and the foaming and you will have a good
measurement.

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

For Alfa Laval U-turn evaporator:

• Use a HBLT-A1 rod-style sensor.

Specifications

Connection diagram

HBLC web 1

The sensor can be programmed to either emit a linear signal, which is identical to the tank level, or to regulate a valve for the purpose of obtaining the same level in the tank (float valve).

Drawing

HBLT Wire measure

Power supply
Voltage24 AC/DC + 10%
Max. possible resistance500 ohm
Max consumption50 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 68-2-6 (4g)
RefrigerantsR22, R134A, R404A, R410A, R507, R717 & R718, R1234
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 partsPlast
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

Thread typeValve typeOrdering code
3/4" NPT HBLT-Wire-2
3/4" BSPP HBLT-Wire-6
Electronic part for HBLT-Wire HBLT-Wire-EL
3/4" NPTModulatingHBLT/C-Wire-2
3/4" BSPPModulatingHBLT/C-Wire-6
Electronic part for HBLT/C-WireModulatingHBLT/C-Wire-EL
3/4" NPTStepperHBLT/S-Wire-2
3/4" BSPPStepperHBLT/S-Wire-6
Electronic part for HBLT/S-WireStepperHBLT/S-Wire-EL
3/4" NPT HBLT-Wire-2-IP
3/4" BSPP HBLT-Wire-6-IP
Electronic part for HBLT-Wire HBLT-Wire-EL-IP
*Stepper motor & IP versions are without display

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