A5E32337695 SITRANS Probe LU (HART) – OPERATING INSTRUCTIONS Page 93
G: Hazardous Installation
Appendix G: Hazardous area
installations
• Wiring details
• Instructions specific to hazardous area installations
Wiring Details
Intrinsically Safe Model
FM (reference drawing 23650516: see page 99)
CSA
(reference drawing 23650517: see page 100)
Under the entity evaluation concept, SITRANS Probe LU has the following
characteristics:
Definition:
The Entity Concept allows interconnection of intrinsically safe apparatus to associated
apparatus not specifically examined in such combination. The criteria for interconnection
is that the voltage and current which intrinsically safe apparatus can receive and remain
intrinsically safe, considering faults, must be equal to or greater than the output voltage
(U
o
) and output current (I
o
) levels which can be delivered by the associated apparatus,
considering faults and applicable factors. In addition, the maximum unprotected
capacitance (Ci) and Inductance (Li) of the intrinsically safe apparatus, including
interconnecting wiring, must be equal to or less than the capacitance and inductance
which can be safely connected to associated apparatus.
(input voltage) U
i
= 30 V DC (max.)
(input current) I
i
= 120 mA DC (max.)
(input power) P
i
= 0.8 W
To Next Page
Loading...
