Manual

B.Wiring Installation
General-use (Figure 4-4a)
1. Use metallic conduit or waterproof cable glands for wiring.
a. Apply non-hardening sealant to the terminal box
and the threads on the flexible metal conduit for
waterproofing.
Explosion-proof
1. Explosion-proof metal conduit wiring (Figure 4-4b)
a. A seal fitting must be installed near the terminal
box port.
b. Apply a non-hardening sealant to the threads of
the terminal connection box.
4.7.5 Grounding
a. Grounding should satisfy KS requirements (grounding
resistance should be 10 ohm or less). Grounding is
required for explosion-proof applications and the ground
resistance must be below 10 ohms.
b. There are ground terminals on the inside and outside of the
transmitter. Either of these terminals may be used
c. Use 600V insulated PVC wire for grounding.
4.7.6 Power Supply Voltage and Load Resistance
When configuring the loop, make sure that the external load
resistance is within the range (see figure below). The
transmitter supply voltage should be:
• Standard: 11.9 to 45 Vdc
• HART Communication: 17.4 to 45 Vdc
And maximum loop current is 24mA, Load resistance R:
R = (E-11.9) / 0.022 (E = Power Supply Voltage)
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Figure 4-4a Typical Mounting using Flexible Metal Conduit
Figure 4-4b Typical Wiring using Explosion-Proof Conduit
3200 Smart Pressure Transmitter
Internal and External Ground Terminal