Specifications

2. Installation MI 611-211 – October 2005
9
WARNING
!
Wiring installation must comply with any existing local regulations.
WARNING
!
A safety agency certified energy barrier must be used with this apparatus to meet
agency certification requirements. See MI 611-206 (FM/CSA) or MI 611-208
(ATEX) for details.
CAUTION
!
1. Failure to adequately seal open ports or secure the cover will jeopardize NEMA 4X,
CSA Enclosure 4X, or IEC IP65 and will void instrument warranty.
2. To maintain a rating of NEMA 4X, CSA Enclosure 4X, or IEC IP65, wiring
methods, conduit, and fittings appropriate to the ratings must be used. Table 2
identifies recommended parts.
CAUTION
!
To mimimize RFI/EMI effect, use grounded metal conduit on sensor cable and input
power leads.
3. Bring the wires from your 2-wire input power in the left opening and connect to the
input power terminals shown in Figure 7. Bring the sensor cable in the right opening
and connect by number to the appropriate terminals near the top of the case per
Figure 7.
4. For non-Foxboro sensors with coax cable, connect RTD to terminals 1 and 2,
measurement electrode to terminal 3, solution ground to terminal 4, and reference
electrode to terminal 5. Solution ground must be wired to a metallic material in
contact with the process solution. If not, jumper terminals 4 and 5.
5. For non-Foxboro sensors with triax cable, connect RTD to terminals 1 and 2,
measurement electrode to terminal 3, measurement screen (shield) to terminal 3A,
solution ground to terminal 4, and reference electrode to terminal 5. Solution ground
Table 2. Recommended Conduit and Fittings
Material Conduit Fitting
Rigid Metal 1/2 inch Electrical Trade Size T&B* #370
Semi-Rigid Plastic T&B #LTC 050 T&B #LT 50P or
T&B #5362
Semi-Rigid Plastic
Metal Core
Anaconda Type HV, 1/2 inch T&B #LT 50P or
T&B #5362
Flexible Plastic T&B #EFC 050 T&B #LT 50P or
T&B #5362
*T&B = Thomas & Betts Corp., 1001 Frontier Road, Bridgewater, NJ 08807