Hall effect current loop

Current loop speed sensor with straight line output

DWG 04

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DWG-EM 04

At a glance

Product properties

  • Operating temperature range -70°C to +125°C
  • Insensitive to interference voltages
  • Reverse polarity protection
  • Quick, easy installation
  • Shock and vibration resistant as per DIN 61373 Cat. 3
  • No wear, no maintenance

Description

Speed sensors measure rotational movements on involute or rectangular geared sensor wheels in 1 and 2 channel versions. They are available for cog wheel modules from 1.0 to 3.0. They have a max. switching frequency of 20,000 Hz, or 25,000 Hz in special implementations. The speed sensor is also suitable for zero speed. Data transmission using a current loop is used especially in tough environments. It enables use over longer distances, as it is not sensitive to changes in resistance or interference voltages. The DWG 04 in current loop design is therefore ideal for use in rail applications.

Assembly variants

DWG 04 with straight line output

Construction DWG 04 with hose line

DWG 04 with cable protection (corrugated tube hose)

The supply line can also be protected against adverse environmental influences with a corrugated tube hose. In this example, the cable connection port has an additional shrinking tube.

DWG 04 with cable protection (rubber fabric hose)

To protect against extreme environmental influences, the supply line can also be designed with rubber fabric hose. The ??? from Harting is used as the plug in this example.

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