Azbil PTG60, User Manual

Page: 9 / 84

Azbil Corporation Preface
Model PTG60/70/71/72 - Smart Pressure Transmitter iii
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.
•
6HDOHDFKFRQGXLWHQWHULQJWKHDSSDUDWXVHQFORVXUHZLWKLQLQFKHVPPIURPWKH
enclosure.
• 'RQRWRSHQWKHDSSDUDWXVHQFORVXUHZKHQDQH[SORVLYHDWPRVSKHUHLVSUHVHQW
1. Class I, Division 1 locations
Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit, or Type
0,FDEOHZLWKWHUPLQDWLRQ¿WWLQJVDSSURYHGIRUWKHORFDWLRQ , can be employed
• Threaded joints PXVWEHPDGHXSZLWKDWOHDVW¿YHWKUHDGVIXOO\HQJDJHG
Sealing
• Each conduit entering the apparatus enclosure is required to be sealed within 18
LQFKHVPPIURPWKHHQFORVXUH
• The sealing of each conduit can be provided with DVHDOLQJ¿WWLQJDSSURYHGIRUFODVV
I locations.
• Sealing compound must be approved and must not have a melting point of less than
ƒ&ƒ)
• 7KHPLQLPXPWKLFNQHVVRIWKHVHDOLQJFRPSRXQGVKRXOGQRWEHOHVVWKDQWKHWUDGHVL]H
RIWKHFRQGXLWDQGLQQRFDVHOHVVWKDQLQFKPP
• 6SOLFHVDQGWDSVFDQQRWEHPDGHLQWKH¿WWLQJV
2. Class I, Division 2 locations
Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit,
enclosed gasketed busways
RU7\SH3/7&FDEOHLQDFFRUGDQFHZLWKWKHSURYLVLRQV
RIUHPRWHFRQWUROVLJQDOLQJDQGSRZHUOLPLWHGFLUFXLWVVHH1(&$UWLFOHRU
Type ITC cable in cable trays, in raceways, supported by messenger wire, or directly
buried where the cable is listed for this use;
Type MI, MC, MV, or TC cable with
DSSURYHGWHUPLQDWLRQ¿WWLQJV can be employed.
Sealing
• (DFKFRQGXLWHQWHULQJWKHDSSDUDWXVHQFORVXUHLVUHTXLUHGWREHVHDOHGDVVKRZQLQ
3. Class II, Division 1 locations
Wiring methods
• Threaded rigid metal conduit, threaded steel intermediate metal conduit, or Type
0,FDEOHZLWKWHUPLQDWLRQ¿WWLQJVDSSURYHGIRUWKHORFDWLRQ , can be employed.