Safety Yamatake Corporation
2 ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter
Explosion protected Models
FM Explosionproof/Dust -ignitionproof Apparatus (in accordance
with NEC)
CAUTION
• Install the apparatus only in areas for which the apparatus has been approved.
• Seal each conduit entering the apparatus enclosure within 18 inches (457 mm)
from the enclosure.
• Do not open the apparatus enclosure when an explosive atmosphere is present.
1. Class I, Division 1 locations
1.1 Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit, or
Type MI cable with termination fittings approved for the location, can be
employed
• Threaded joints must be made up with at least five threads fully engaged.
1.2 Sealing
• Each conduit entering the apparatus enclosure is required to be sealed within 18
inches (457 mm) from the enclosure.
• The sealing of each conduit can be provided with a sealing fitting approved for
class I locations.
• Sealing compound must be approved and must not have a melting point of less
than 93 ° (200 °F).
• The minimum thickness of the sealing compound should not be less than the
trade size of the conduit and, in no case, less than 5/8 inch (16 mm).
• Splices and taps cannot be made in the fittings.
18 inches max.
Sealing Compound
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