HI 6020IT-SSX-Y-EX and HI 6020JB-SSX-Y-EX User Guide
Page | 7
WARNING!
FOR CONTINUED PROTECTION AGAINST SHOCK HAZARD, CONNECT TO
THE INTRINSICALLY SAFE GROUND ONLY. DO NOT REMOVE THE
GROUNDING CONNECTION.
CAUTION
OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE DEVICES.
Wiring Summing Boxes
IMPORTANT NOTE: When wiring between load cells, summing boxes, and intrinsically safe barriers
1.
Associated apparatus manufacturer’s installation drawings must be followed when installing this
equipment.
2.
Resistance between Intrinsically Safe Ground and earth ground must be less than 1.0 Ohm.
3.
Install Intrinsic Safe Barriers in accordance with barrier instructions.
4.
The total combined length of all wiring in the system, including the cable from each associated apparatus to and from
the summing box, and to each load cell must not exceed 300 feet.
5.
Installation should be in accordance with IEC/EN 60079-14.
6.
The products for use in ATEX/IECEx Zone 0 Group IIC areas are the HI 6020JB-SSX-Y-EX and the HI
6020IT-SSX-Y-EX (both shipped without cable glands):
a.
SS = Stainless Steel enclosure
b.
1 = Without trim pots; 2 = With Trim Pots
c.
Y = Blank is a 5-hole summing box enclosure; Y = 6 is a 6-hole summing box enclosure enabling
connection to a second summing box
7.
SB (summing box) maximum cable length 250 ft; used between the summing box and IS barriers.
8.
Substitution of components may impair Intrinsic Safety and/or void Hazardous Area Approval.
WARNING: To prevent ignition of flammable or combustible atmospheres, disconnect power before
servicing