Vicpas IND110, Technical Manual

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5-1
Chapter 5.0
Installation
Load cell connections
Up to (4) 350 Ohm full bridge strain gauges may be connected in parallel. The
excitation voltage supplied by the IND110 is 10 VDC with a source current of 120mA
max.
WARNING
THE IND110 IS NOT INTRINSICALLY SAFE. THE LOAD CELL LINES MUST
NOT BE OPERATED IN A HAZARDOUS AREA WITHOUT AN APPROVED
INTRINSIC SAFE BARRIER. FAILURE TO OBSERVE THESE PRECAUTIONS
COULD RESULT IN BODILY HARM AND/OR PROPERTY DAMAGE.
Load cell connections must be made with shielded cable as shown below. Note that
the IND110 SHIELD terminal is electrically connected to the IND110 circuit and 24VDC
common. Therefore, Mettler Toledo recommends an isolated 24VDC source to prevent
stray ground loop currents from affecting load cell signal integrity. The load cell cable
shield should not be externally connected to any grounds and must remain floating at
the load cell end.
Figure 7