Digi HygroClip DI digital interface Benutzerhandbuch

Rotronic AG 
Bassersdorf, Switzerland 

Document code 

Unit 

Document Type 

Document title 

Page  24 of 24 

 

 

The following points should also be observed: 
 

•  Close the parasitic circuit  

•  Connect all devices to the potential equalizing cable as often as possible. Electrical 

conductors such as machine elements, metal tubes or supporting constructions should 
be integrated into the system. 

•  Protect the potential-equalization cable and connections against corrosion.  

•  Select the cross-section of the potential equalization cable according to the maximum 

equalization current.  

 
If these different measures do not correct the problem, a galvanic separation according to 
ISO 9549 may have to be installed. You may also want to consider the use of fiber-optic cables. 

 
Doc. Release 

Date 

Notes 

-10 

Jan. 16, 2007 

Original release 

 

 
Firmware Version 

Date 

PCB Number 

1.0a 

Apr. 26, 2006 

Model DI-3: 66.0860.0015 
Model DI-4: 66.0862.0015