Fisher FIELDVUE DVC6200 Instruction Manual page 101

I.S. CLASS I,II,III, DIV 1, GROUPS A,B,C,D,E,F,G
N.I. CLASS I, DIV 2, GROUPS A,B,C,D
NOTES:
THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS TO ASSOCIATED APPARATUS NOT SPECIFICALLY EXAMINED IN SUCH
1
COMBINATION. THE CRITERIA FOR INTERCONNECTION IS THAT THE VOLTAGE (Vmax or Ui), THE CURRENT (Imax or Ii), AND THE POWER (Pmax or Pi) OF THE
INTRINSICALLY SAFE APPARATUS MUST BE EQUAL TO OR GREATER THAN THE VOLTAGE (Voc or Uo), AND THE CURRENT (Isc or Io), AND THE POWER (Po)
DEFINED BY THE ASSOCIATED APPARATUS. IN ADDITION, THE SUM OF THE MAX UNPROTECTED CAPACITANCE (Ci) AND MAX UNPROTECTED INDUCTANCE (Li),
INCLUDING THE INTERCONNECTING CABLING CAPACITANCE (Ccable) AND CABLING INDUCTANCE (Lcable) MUST BE LESS THAN THE ALLOWABLE CAPACITANCE
(Ca) AND INDUCTANCE (La) DEFINED BY THE ASSOCIATED APPARATUS. IF THE ABOVE CRITERIA IS MET, THEN THE COMBINATION MAY BE CONNECTED.
Vmax or Ui  Voc or Uo Imax or Ii  Isc or Io
3
INSTALLATION MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE (NEC) NFPA70 AND ANSI/ISA RP12.6.01
4
MAXIMUM SAFE AREA VOLTAGE SHOULD NOT EXCEED 250 Vrms.
5 RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THE ONE OHM
6 LOOPS MUST BE CONNECTED ACCORDING TO THE BARRIER MANUFACTURER'S INSTRUCTION
IF HAND-HELD COMMUNICATOR OR MULTIPLEXER IS USED IT MUST BE FM APPROVED WITH ENTITY PARAMETERS AND INSTALLED PER THE MANUFACTURER'S
7
CONTROL DRAWING
GE42819 sheets 2 and 8
September 2010
Loop Schematics/Nameplates
HAZARDOUS LOCATION
DVC6200
Vmax = 30 VDC
Imax = 226 mA
Ci = 5 nF
Li = 0.55 mH
Pi = 1.4
NOTE 7
Pmax or Pi  Po Ci + Ccable  Ca
Figure B-3. FM Loop Schematic
Figure B-4. FM Nameplates
NON-HAZARDOUS LOCATION
FM APPROVED BARRIER
NOTE 1, 3, 4, 5, 6
Li + Lcable  La
LABEL FOR NATURAL GAS
CERTIFIED TERMINAL BOX
93
B