Rosemount 4088A MultiVariable, Быстрый старт

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Quick Start Guide
13
September 2016
Surges/transients
The transmitter will withstand electrical transients of the energy level usually
encountered in static discharges or induced switching transients. However,
high-energy transients, such as those induced in wiring from nearby lightning
strikes, can damage the transmitter.
Optional transient protection terminal block
The transient protection terminal block can be ordered as an installed option
(Option Code T1 in the transmitter model number) or as a spare part to retrofit
existing 4088 MultiVariable Transmitters in the field. For a complete listing of
spare part numbers for transient protection terminal blocks, reference the
Rosemount 4088 MultiVariable
Reference Manual . A lightning bolt symbol on a
terminal block identifies it as having transient protection.
Note
Grounding the transmitter case using the threaded conduit connection may not provide a
sufficient ground. The transient protection terminal block (Option Code T1) will not provide
transient protection unless the transmitter case is properly grounded. See
“Trim the
transmitter” on page 18 to ground the transmitter case. Do not run transient protection
ground wire with signal wiring; the ground wire may carry excessive current if a lightning
strike occurs.
5.2 Install optional process temperature input (Pt 100 RTD
Sensor)
Note
To meet ATEX/IECEx Flameproof certification, only ATEX/IECEx Flameproof Cables
(Temperature Input Code C30, C32, C33, or C34) may be used.
1. Mount the Pt 100 RTD Sensor in the appropriate location.
Note
Use shielded four-wire or three-wire cable for the process temperature connection.
N1 ATEX Type n
ND ATEX Dust
K1 ATEX Flameproof, Intrinsic Safety, Type n, Dust (combination of E1, I1, N1, and ND)
E7 IECEx Flameproof, Dust Ignition-proof
N7 IECEx Type n
K7
IECEx Flameproof, Dust Ignition-proof, Intrinsic Safety, and Type n
(combination of E7, I7, and N7)
KA
ATEX and CSA Explosion-proof, Intrinsically Safe, Division 2
(combination of E1, E6, I1, and I6)
KC
FM and ATEX Explosion-proof, Intrinsically Safe, Division 2
(combination of E5, E1, I5, and I1)
T1 Transient terminal block
D4 External ground screw assembly
Option code
Description