Hazardous Area Configuration For Powercell Pdx Load Cells - Mettler Toledo IND780 Guide D'installation

which is higher than the rating of the IND780 terminal UL approval value of 135°C
(211°F). This indicates the temperature comparison test passes.
Since all three field circuit parameters compare favorably and pass the formula
evaluation and the temperature comparison test passes, the products listed in this
example may be safely installed into a Division 2 area. They must be installed
according to the IND780 control drawing 64069877 using all pertinent local and
national standards.
Hazardous Area Configuration for
POWERCELL PDX Load Cells
Table 2-1: Hazardous Area Configuration Table for Div 2, Zone 2/22
(IND780, POWERCELL PDX, no I/O or comm. board options)
4
300m (984 ft)
290m (951 ft)
280m (919 ft)
270m (886 ft)
260m (853 ft)
250m (820 ft)
240m (787 ft)
230m (755 ft)
220m (722 ft)
210m (689 ft)
200m (656 ft)
190m (623 ft)
180m (591 ft)
170m (558 ft)
160m (525 ft)
150m (492 ft)
140m (459 ft)
130m (427 ft)
120m (394 ft)
110m (361 ft)
100m (328 ft)
90m (295 ft)
80m (263 ft)
using the IND780 terminal's
70m (229 ft)
60m (197 ft)
50m (164 ft)
40m (131 ft)
30m (98 ft)
20m (66 ft)
10m (33 ft)
<33m
108ft
The configurations indicated in Table 2-1 are confirmed for operation up to
50°C (122°F).
IND780 Terminal Division 2 and Zone 2/22 Installation Manual
Number of POWERCELL
6 8 10
Dark area indicates valid
hazardous configuration
integral 12V power supply
<55m <73m <91m <109m
180ft 240ft 299ft 358ft
Total Cell-to-Cell Cable Length
® ®
PDX Load Cells
12 14 16 18
White area indicates
a custom solution.
Shaded area indicates
valid hazardous
configuration using
two IND780 terminals,
two HR cables and two
LPO kits
<120m <142m <164m
394ft 466ft 538ft
20 22 24
Consult factory.
<186m <200m
610ft 656ft
2-9