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Electrical installation
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Electrocution hazard. Always remove power to the instrument before making electrical connections.
Electrical shock hazard. Externally connected equipment must have an applicable country safety
standard assessment.
Fire hazard. Always limit current to the relays with an external fuse or breaker. Obey the relay ratings in
the Specifications section.
Make sure that the equipment is connected to the module in accordance with local, regional and national
requirements.
Wiring for pressurized sampling
The high-voltage relay connects to the user-supplied equipment for pressurized sampling as shown
in
Figure 2
on page 6.
Wiring requirements:
• Only use 4.3 to 11.4 mm (0.17 to 0.45 inch) diameter cable.
• Use cable with a minimum insulation rating of 300 VAC and a minimum wire size of 0.823 mm
(18 AWG).
• Make sure that the cable jacket is correct for wet outdoor locations.
• Do not install the wiring in conduit.
• Review the relay specifications in
1. Prepare the wires as shown in
2. Install the wires to the TB2 block as shown in
pound).
3. If more than 25.4 mm (1 inch) of the cable jacket is removed, install a plastic wire tie around the
wires. Install the wire tie at a maximum distance of 19 mm (0.75 inch) from the terminal. Refer to
Figure
5.
4. Tighten the cable strain relief sufficiently to keep the environmental rating of the enclosure.
5. Install the cover. Make sure that the screws are tight to keep the environmental rating of the
enclosure.
10 English
D A N G E R
D A N G E R
W A R N I N G
C A U T I O N
N O T I C E
Specifications
on page 3.
Figure
5.
Figure 5
and
Table
2. Tighten to 0.40 Nm (3.5 inch-
2
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