Yokogawa RAMC - Manual (Page 116)

<10. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
10-24
IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
10.10 Flame proof and dust proof IECEx certified
RAMC (/EF1)
10.10.1 Technical data
Certificate :
IECEx IBE12.0007
Flame proof :
Ex d IIC T1-T6 Gb
Dust proof :
Ex tb IIIC TX Db
Max. surface temperature TX :corresp. process temperature
Housing :
Painted aluminium casting, type 91
Output signal (with electronic transmitter -E or -H) :
4–20 mA (2- wire unit, 3- wire unit) ; 0-20 mA (3- wire unit)
Power supply (with electronic transmitter -E or -H) :
2- or 3- wire unit
Limit switches:
Options /K1 to /K10 possible
Ambient temperature :
-20 °C to 60 °C
Minimum process temperature :
-20°C
Threads for cable glands :
- M20x1.5 (standard)
- ½” NPT (option /A5)
Degree of protection :
IP66 / 67
Temperature classification for gas application :
Temperature class Standard On extension (option /A16) On extension (option /A16)
and thermal insulation
T6 85°C 85°C 85°C
T5 100°C 100°C 100°C
T4 120°C 135°C 135°C
T3 120°C 200°C 200°C
T2 120°C 300°C 300°C
T1 120°C 370°C 350°C