NH3 SENSORS
AMMONIA LEVEL SENSOR HBLT-A2



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INTRODUCTION

HBLT-A2 capacitive liquid level transmitters 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 PC 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.

HBLT-A2 provides new possibilities but has the same price as HBLT-A1.

TECHNICAL DETAILS

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

SPECIFICATIONS

Connection diagram

HBLT A2 ELECTRICAL INSTALLATION

Drawing

HBLT A2 MEKANISKE DIMENSIONER TIL SIDE

 

Power supply
Voltage 24 AC/DC + 10%
Plug connection M12, 5 pins - DIN 0627
Output
Analog output  4-20 mA
Environmental conditions
Ambient temperature -30...+50°C
Refrigerant temperature -60...+80°C
Max. pressure 100 bar
Protection class IP65
Vibrations IEC 68-2-6 (4g)
Mechanical specifications
Thread connections 3/4” NPT / BSP
Material - mechanical parts AISI 304 / PTFE
Material - electronic parts Nylon 6 (PA)
House type Angle
Approvals
EMC test EN 61000-2
Indication
LED indication Green, yellow, and red

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 Alpha 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.

DISCLAIMER

Length / thread Valve type Ordering code with LED
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" BSP Modulating HBLT/C-A2-2.8
500 mm / 1" BSP Modulating HBLT/C-A2-5
800 mm / 1" BSP Modulating HBLT/C-A2-8
1000 mm / 1" BSP Modulating HBLT/C-A2-10
1200 mm / 1" BSP Modulating HBLT/C-A2-12
1500 mm / 1" BSP Modulating HBLT/C-A2-15
1700 mm / 1" BSP Modulating HBLT/C-A2-17
2200 mm / 1" BSP Modulating HBLT/C-A2-22
3000 mm / 1" BSP Modulating HBLT/C-A2-30
6" / 3/4” NPT Modulating HBLT/C-A2-6U
8" / 3/4” NPT Modulating HBLT/C-A2-8U
12" / 3/4” NPT Modulating HBLT/C-A2-12U
15.3" / 3/4” NPT Modulating HBLT/C-A2-15.3U
19.2" / 3/4” NPT Modulating HBLT/C-A2-19.2U
23.1" / 3/4” NPT Modulating HBLT/C-A2-23.1U
30" / 3/4” NPT Modulating HBLT/C-A2-30U
35" / 3/4” NPT Modulating HBLT/C-A2-35U
45" / 3/4” NPT Modulating HBLT/C-A2-45U
55" / 3/4” NPT Modulating HBLT/C-A2-55U
65" / 3/4” NPT Modulating HBLT/C-A2-65U
85" / 3/4” NPT Modulating HBLT/C-A2-85U
105" / 3/4” NPT Modulating HBLT/C-A2-105U
120" / 3/4” NPT Modulating HBLT/C-A2-120U
Electronic part for HBLT/C-A2 Modulating HBLT/C-A2-EL
     
280 mm / 1" BSP Stepper HBLT/S-A2-2.8
500 mm / 1" BSP Stepper HBLT/S-A2-5
800 mm / 1" BSP Stepper HBLT/S-A2-8
1000 mm / 1" BSP Stepper HBLT/S-A2-10
1200 mm / 1" BSP Stepper HBLT/S-A2-12
1500 mm / 1" BSP Stepper HBLT/S-A2-15
1700 mm / 1" BSP Stepper HBLT/S-A2-17
2200 mm / 1" BSP Stepper HBLT/S-A2-22
6" / 3/4” NPT Stepper HBLT/S-A2-6U
8" / 3/4” NPT Stepper HBLT/S-A2-8U
12" / 3/4” NPT Stepper HBLT/S-A2-12U
15.3" / 3/4” NPT Stepper HBLT/S-A2-15.3U
19.2" / 3/4” NPT Stepper HBLT/S-A2-19.2U
23.1" / 3/4” NPT Stepper HBLT/S-A2-23.1U
30" / 3/4” NPT Stepper HBLT/S-A2-30U
35" / 3/4” NPT Stepper HBLT/S-A2-35U
45" / 3/4” NPT Stepper HBLT/S-A2-45U
55" / 3/4” NPT Stepper HBLT/S-A2-55U
65" / 3/4” NPT Stepper HBLT/S-A2-65U
85" / 3/4” NPT Stepper HBLT/S-A2-85U
105" / 3/4” NPT Stepper HBLT/S-A2-105U
120" / 3/4” NPT Stepper HBLT/S-A2-120U
Electronic part for HBLT/S-A2 Stepper HBLT/S-A2-EL

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