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The pulse collection and transmission circuits have been designed with historical and practical experience, and are designed to create high reliability for a low cost, within known engineering principles.

A major feature is the 'Grab Circuit' specfically designed to improve operational life in 'difficult operational areas'

It offers major benefits to the products reliability model,

Provides higher safety levels

Pulse Data

Maximum Operating Voltage 45vdc
Clamp circuit interjection 65vdc       
500watt Power Dissaption Limit - Max Current 10amp       
Reverse Connection Protection 6vdc       
Pulse Width 50  mSecs       
DC Forward Current 0.6v       
Rise And Fall Max 18 micro Secs        
Isolation Resistance 5 x 10/10 ohms       
Isolation Voltage 5 kV       
Collector Remitter Satuation Voltage 0.4volts 

Pulse Smoothing

HCM4’s have a unique software, that smoothes out the pulses received making them into square wave output pulses This greatly improves reading reliability for Building Management Systems and Automatic Meter Reading Systems

Operating temperature range -55c to 130c