NH3 Liquid Level Sensor

Technical data: HBLT-A2 / HBSLT-A2

HBLT-A2 capacitive liquid level sensors are used to measure liquid levels in refrigerant vessels. 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 refrigerant vessels. 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).

The difference between the new HBLT-A2 and the HBLT-A1 is the electronic head. We have used the electronic head from our HBLC sensor, which gives more opportunities in the HB Tool for configuration with 3 parameters to set up the sensor. HBLT-A2 has a digital display instead of the bar graph known from HBLT-A1 and HBLT-A2 is an intelligent sensor with a built-in microprocessor. It emits a 4-20 mA signal, which is proportional to the sensor’s set range of measurement.  Apart from the 4-20 mA signal the sensor also has a built-in controller. The controller can be set-up with all the parameters necessary for controlling a modulating motor valve.

The sensor can be delivered with a cable for direct supply to and control of motor valves. The sensor is delivered in a version without integrated cable (named HBLT) and a version with cable for direct control of valves (named HBSLT).

Product features

Digital display
Controller built inside
Advanced setting for controlling modulating valve
3 parameters to set up the sensor
Easy diagnostics
The HBLT-A2 is a perfect solution under turbulent conditions like marine applications
Split design which makes it possible to make easy installation and diagnostics
The electronic part can be easily disconnected by loosening the threaded nut / union nut
Proven and reliable design with process signal output of 4-20 mA
Designed for the industrial refrigeration industry - max pressure up to 100 bar & high protection class

Applications

Use of HBLT-A2

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-A2 or HBLT-A1 rod-style sensor.
  For Stand-pipes with turbulent conditions (a lot of turbulence, cooking, foaming, liquid from the top):
• Use a HBLT-A2 or 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-A2 or 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-A2 or HBLT-A1 rod-style sensor.

 

 

 HBLT A2 U TURN

HBLT/C-A2, here’s a cable connection directly to a modulating fluid valve

such as Siemens MVS661, this will save installations cost because there is built

in a level controller in the sensor head.

Specifications

Connection diagram

HBLT A2 ELECTRICAL INSTALLATION

Drawing

 

Thread: 1" BSPP

HBLT A2 SAM R1 300ppi Web

Thread: 3/4" NPT

 HBLT A2U SAM R1 300ppi web

Power supply
Voltage24 AC/DC + 10%
Current comsumption - sensor only*250 mA
Electrical connectionM12, 5 pins - DIN 0627
Direct valve control
/C: Signal to modulation valve4-20 mA
/S: Integrated controller for stepper motor valve
Alarm output1A (24V DC)
Environmental conditions
Ambient temperature-30...+50°C
Refrigerant temperature-60...+80°C
Max. operational pressure100 bar
Protection degreeIP65
Authorisations
VibrationsIEC 68-2-6 (4g)
EMC EmissionEN61000-3-2
EMC ImmunityEN61000-4-2
EAC Regulation of Conformity
Mechanical specifications
Thread connections¾” NPT & 1” BSPP
Material - mechanical partsAISI304 / PTFE
Material - electronic partsGF BLK Nylon 6 (PA)
House designFront
Configuration & indication
ConfigurationBy HB Tool
LED indicationGreen, yellow, and red
Cable specification
Supply cable, 5 metersHBxC-M12/5 Straight
Cable size5 x 0,34 mm²
Accessories
Modulating valveSiemens MVS 661
Stepper motor valveCarel E2V
Adapter - 3/4” NPT / 1” BSPPHBS/ADAP/8/2
Adapter - 3/4” BSPP / 1” BSPPHBS/ADAP/8/6
* Total consumption is sensor consumption plus output and it depends on ambient temperature.

Ordering code

Length / threadValve typeOrdering code
280 mm / 1" BSP HBLT-A2-2.8
500 mm / 1" BSP HBLT-A2-5
800 mm / 1" BSP HBLT-A2-8
1000 mm / 1" BSP HBLT-A2-10
1200 mm / 1" BSP HBLT-A2-12
1500 mm / 1" BSP HBLT-A2-15
1700 mm / 1" BSP HBLT-A2-17
2200 mm / 1" BSP HBLT-A2-22
3000 mm / 1" BSP HBLT-A2-30
6" / 3/4” NPT HBLT-A2-6U
8" / 3/4” NPT HBLT-A2-8U
12" / 3/4” NPT HBLT-A2-12U
15.3" / 3/4” NPT HBLT-A2-15.3U
19.2" / 3/4” NPT HBLT-A2-19.2U
23.1" / 3/4” NPT HBLT-A2-23.1U
30" / 3/4” NPT HBLT-A2-30U
35" / 3/4” NPT HBLT-A2-35U
45" / 3/4” NPT HBLT-A2-45U
55" / 3/4” NPT HBLT-A2-55U
65" / 3/4” NPT HBLT-A2-65U
85" / 3/4” NPT HBLT-A2-85U
105" / 3/4” NPT HBLT-A2-105U
120" / 3/4” NPT HBLT-A2-120U
Electronic part for HBLT-A2 HBLT-A2-EL
280 mm / 1" BSPModulatingHBSLT/C-A2-2.8
500 mm / 1" BSPModulatingHBSLT/C-A2-5
800 mm / 1" BSPModulating HBSLT/C-A2-8
1000 mm / 1" BSPModulating HBSLT/C-A2-10
1200 mm / 1" BSPModulating HBSLT/C-A2-12
1500 mm / 1" BSPModulating HBSLT/C-A2-15
1700 mm / 1" BSPModulating HBSLT/C-A2-17
2200 mm / 1" BSPModulating HBSLT/C-A2-22
3000 mm / 1" BSPModulating HBSLT/C-A2-30
6" / 3/4” NPTModulatingHBSLT/C-A2-6U
8" / 3/4” NPTModulatingHBSLT/C-A2-8U
12" / 3/4” NPTModulatingHBSLT/C-A2-12U
15.3" / 3/4” NPTModulatingHBSLT/C-A2-15.3U
19.2" / 3/4” NPTModulatingHBSLT/C-A2-19.2U
23.1" / 3/4” NPTModulatingHBSLT/C-A2-23.1U
30" / 3/4” NPTModulatingHBSLT/C-A2-30U
35" / 3/4” NPTModulatingHBSLT/C-A2-35U
45" / 3/4” NPTModulatingHBSLT/C-A2-45U
55" / 3/4” NPTModulatingHBSLT/C-A2-55U
65" / 3/4” NPTModulatingHBSLT/C-A2-65U
85" / 3/4” NPTModulatingHBSLT/C-A2-85U
105" / 3/4” NPTModulatingHBSLT/C-A2-105U
120" / 3/4” NPTModulatingHBSLT/C-A2-120U
Electronic part for HBSLT/C-A2ModulatingHBSLT/C-A2-EL
280 mm / 1" BSPStepperHBSLT/S*-A2-2.8
500 mm / 1" BSPStepperHBSLT/S-A2-5
800 mm / 1" BSPStepperHBSLT/S-A2-8
1000 mm / 1" BSPStepperHBSLT/S-A2-10
1200 mm / 1" BSPStepperHBSLT/S-A2-12
1500 mm / 1" BSPStepperHBSLT/S-A2-15
1700 mm / 1" BSPStepperHBSLT/S-A2-17
2200 mm / 1" BSPStepperHBSLT/S-A2-22
3000 mm / 1" BSPStepperHBSLT/S-A2-30
6" / 3/4” NPTStepperHBSLT/S-A2-6U
8" / 3/4” NPTStepperHBSLT/S-A2-8U
12" / 3/4” NPTStepperHBSLT/S-A2-12U
15.3" / 3/4” NPTStepperHBSLT/S-A2-15.3U
19.2" / 3/4” NPTStepperHBSLT/S-A2-19.2U
23.1" / 3/4” NPTStepperHBSLT/S-A2-23.1U
30" / 3/4” NPTStepperHBSLT/S-A2-30U
35" / 3/4” NPTStepperHBSLT/S-A2-35U
45" / 3/4” NPTStepperHBSLT/S-A2-45U
55" / 3/4” NPTStepperHBSLT/S-A2-55U
65" / 3/4” NPTStepperHBSLT/S-A2-65U
85" / 3/4” NPTStepperHBSLT/S-A2-85U
105" / 3/4” NPTStepperHBSLT/S-A2-105U
120" / 3/4” NPTStepperHBSLT/S-A2-120U
Electronic part for HBSLT/S-A2StepperHBSLT/S-A2-EL
280 mm / 1" BSPPWMHBSLT/PWM-A2-2.8
500 mm / 1" BSPPWMHBSLT/PWM-A2-5
800 mm / 1" BSPPWMHBSLT/PWM-A2-8
1000 mm / 1" BSPPWMHBSLT/PWM-A2-10
1200 mm / 1" BSPPWMHBSLT/PWM-A2-12
1500 mm / 1" BSPPWMHBSLT/PWM-A2-15
1700 mm / 1" BSPPWMHBSLT/PWM-A2-17
2200 mm / 1" BSPPWMHBSLT/PWM-A2-22
3000 mm / 1" BSPPWMHBSLT/PWM-A2-30
6" / 3/4” NPTPWMHBSLT/PWM-A2-6U
8" / 3/4” NPTPWMHBSLT/PWM-A2-8U
12" / 3/4” NPTPWMHBSLT/PWM-A2-12U
15.3" / 3/4” NPTPWMHBSLT/PWM-A2-15.3U
19.2" / 3/4” NPTPWMHBSLT/PWM-A2-19.2U
23.1" / 3/4” NPTPWMHBSLT/PWM-A2-23.1U
30" / 3/4” NPTPWMHBSLT/PWM-A2-30U
35" / 3/4” NPTPWMHBSLT/PWM-A2-35U
45" / 3/4” NPTPWMHBSLT/PWM-A2-45U
55" / 3/4” NPTPWMHBSLT/PWM-A2-55U
65" / 3/4” NPTPWMHBSLT/PWM-A2-65U
85" / 3/4” NPTPWMHBSLT/PWM-A2-85U
105" / 3/4” NPTPWMHBSLT/PWM-A2-105U
120" / 3/4” NPTPWMHBSLT/PWM-A2-120U
Electronic part for HBSLT/PWM-A2PWMHBSLT/S-A2-EL
*The /S & /PWM versions is without display

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