FMC Technologies INVALCO 64908265 - Intrinsic Safety Compliance; Entity Parameters and Control Drawing

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Issue/Rev. 0.6 (2/06)
Control Drawing
Intrinsic Safety Connections
When installing the Model 4200 in hazardous areas, the wiring and installation must comply with appropriate installa-
tion standards. The Model 4200 will connect directly to turbine or paddlewheel flowmeters with a certified IS coil or
other certified IS sensors which produce a pulse output, provided they do not exceed the following input parameters:
Vmax = 3.6 Vdc
Imax = 72 mA
Ci = 12.34 uF
Li = 0 mH
Voc = 3.6
Isc = 72 mA
Ca = 12.34 uF
La = 0 mH
Entity Parameters for TB2 Terminals 1 & 2
Vmax = 3.6 Vdc
Imax = 72 mA
Ci = 12.34 uF
Li = 0 mH
Entity Parameters for TB3
Installation must be in accordance with the National Electric Code (NFPA 70, Article 504) and ANSI/ISA-RP12.6.
Selected intrinsically safe equipment must be listed and have entity parameters such that:
Vmax * Voc
Imax * Isc
Ci + Ccable * Ca
Li + Lcable * La
-or-
May be connected to simple apparatus that does not generate more than 1.5V, 100mA and 25mW. If cable
parameters are unknown, the following values can be used:
Cable Capacitance - 60pF/ft
Cable Inductance - 0.20uH/ft
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