Det-Tronics GT3000 Series, Инструкция по эксплуатации

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INTRINSIC SAFETY BARRIERS
When the GT3000 is used in an intrinsically safe
installation, care must be taken when selecting an I.S.
barrier to ensure proper function of the device. The
GT3000 has been tested with the types of barriers listed
in Tables 3 and 4.
Table 3 lists zener barriers.
Table 4 lists isolating barriers that provide a wider range
of input power supply voltages and are less dependent
on voltage drops in the loop. When using IS Barriers,
the user must ensure a minimum of 10.5 VDC across
the GTX transmitter Red and Black Wires, for proper
operation of the GT3000.
For additional information regarding proper IS
installation, refer to the Control Drawings in Appendix
G of this manual.
WIRING PROCEDURE
Wire the transmitter as shown in Figures 7 through 12.
CAUTION
If ripple on the main power source causes
interference with the HART function, the use
of an isolated power source (Figure 12) is
recommended for best HART performance.
Manufacturer P/N
Turck MZB87PX
MTL M
Pepperl & Fuchs Z787.h
Table 3—Acceptable Intrinsic Safety Barriers
for use with GT3000 – Zener Barriers
Manufacturer P/N
Turck IM33-11Ex-Hi
MTL 5541
Pepperl & Fuchs KCD2-STC-Ex1
Stahl 9160/13-10-11
Table 4—Acceptable Intrinsic Safety Barriers
for use with GT3000 – Isolating Barriers