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 rod-style sensor.
For Stand-pipes with turbulent conditions (a lot of turbulence, cooking, foaming, liquid from the top):
• Use a HBLT-A2 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 the 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 rod-style sensor.
Stromanschluss
Der Sensor kann auf die Ausgabe eines dem Behälterfüllstand entsprechenden linearen Signals programmiert oder für die Steuerung eines Ventils zur Aufrechterhaltung eines konstanten Füllstandes im Tank (Schwimmerventil) konfiguriert werden.
Zeichnung
| Power supply |
|---|
| Voltage | 24 AC/DC + 10%
|
| Current consuption - sensor only* | Max 600 mA
|
| Plug connection | M12, 5 pins - DIN 0627
|
| Output |
|---|
| Analog output | 4-20 mA
|
| Alarm output | 1A (24V DC)
|
| LED indication | Green, yellow, and red
|
| Max. possible resistance | 500 ohm
|
| Environmental conditions |
|---|
| Ambient temperature | -30...+50°C (IP version: -60...+50°C)
|
| Refrigerant temperature | -60...+80°C
|
| Max. pressure | 100 bar
|
| Protection degree | IP65
|
| Vibrations | IEC 68-2-6 (4g)
|
| Mechanical specifications |
|---|
| Thread connections | 3/4” NPT/BSPP
|
| Material – mechanical parts | AISI 304 / PTFE
|
| Material - electronic parts | Nylon 6 (PA)
|
| Dimensions | See drawing
|
| Approvals |
|---|
| CE | EN 61000-2
|
| EAC Regulation of Conformity |
|
| Cable specification (power supply) |
|---|
| Cable size | 5 m - 3 x 0.25 mm2
|
| Cable glands | PG7 / M8
|
| Cable resistance | 500 Ω/Km
|
| Configurations |
|---|
| Type of configuration | HB Tool/HMI
|
| Tool to be used | HBLT-Wire software
|
| Accessories |
|---|
| Adapter - 3/4” NPT / 1” BSPP | HBS/ADAP/8/2
|
| Adapter - 3/4” BSPP / 1” BSPP | HBS/ADAP/8/6
|
| Configuration tool | HBxC-Splitbox
|
| Plug converter | HBxC-M12/DIN
|
| * Total consumption is sensor consumption plus output and it depends on ambient temperature. | |
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