Omega TX82B User Manual
Page 15
11
Figure 7-1 Wiring Diagram for TX82B Usage for FM (Factory Mutual)
SAFE AREA
APPARATUS
2
EARTHED BUS BAR
+
-
3
1
4
INTER-
CONNECTING
CABLES
SHUNT ZENER
DIODE
SAFETY
BARRIER
SAFE AREA
HAZARDOUS AREA
NOTES:
Apparatus which is unspecified except that it must not be supplied from nor
contain under normal or abnormal conditions a source of potential with respect to
Earth in excess of 250V R.M.S. or 250V D.C.
The following output parameters apply; Vmax=12.5V, Imax=250mA, Ci=8.6uF,
Li=0mH
The Interconnecting Cable may be a twin pair, or a pair contained in a type A or
type B multicore cable provided that the peak voltage of any circuit contained
within the multicore does not exceed 60 volts.
The capacitance or inductance or inductance to resistance (4/R) ratio of the
Interconnecting Cable must not exceed the values specified for the barrier in use.
5
The electrical circuit in the Hazardous Area must be capable of withstanding
without breakdown an A.C. test voltage of 500V R.M.S. to Earth or frame for one
minute.
1
2
3
4
7.0 WIRING DIAGRAM
MODEL
TX82B
INDICATOR