INTRODUCTION

TECHNICAL DETAILS

	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).

SPECIFICATIONS

Connection diagram

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

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 Alpha Laval U-turn evaporator:

• Use a HBLT-A1 rod-style sensor.

DISCLAIMER