Emerson Daniel 3814, Руководство по установке

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3.4 Conduit seals
Daniel 3814 Liquid Ultrasonic Meters require conduit seals for installations in hazardous
environments. Adhere to safety instructions to protect personnel and equipment.
WARNING
HAZARDOUS VOLTAGE INSIDE
Do not open the Transmitter Electronics Enclosure when an explosive gas atmosphere is
present. Disconnect equipment from supply circuit before opening.
Failure to remove power may result in death or serious injury.
WARNING
EXPLOSION HAZARD
Substitution of components may impair intrinsic safety. Do not disconnect equipment
unless power has been removed or the area is known to be nonhazardous.
Failure to comply may result in death or serious injury.
3.4.1 Startup for systems using explosion-proof conduit
Procedure
1. Assemble conduit to the Transmitter Electronics Enclosure. A conduit seal is
required within 18 inches (457 mm) of the enclosure.
2. Check to make certain that all power to field wiring is turned OFF .
WARNING
HAZARDOUS VOLTAGE INSIDE
Do not open in flammable gas area. Disconnect all power to the meter.
Failure to comply can result in death or serious injury.
3. Remove the end cap nearest the conduit entry to gain access to the transmitter
electronics.
4. Pull the wires.
5. Complete the field connection wiring according to the system wiring diagram (see
Appendix A ).
6. Apply electrical power to the system to ensure the field connections are working
correctly. Allow the system to run for the time specified by the customer (usually
one week) and an electrician have fully tested the connections. After the
Acceptance Test is witnessed and approved, seal the conduit.
7. Power down the system and apply the sealing compound to the conduit and allow
to set in accordance with manufacturer specifications.
8. If required, install the security latches and wire seals on the Transmitter Electronics
Enclosure end caps (see Sealing the Transmitter Electronics Enclosure and see
Figure 3-9 ).
Installation manual Electrical Installation
3-9000-760 May 2019
Installation manual 51