Yokogawa RotaMASS 3-Series - Manual (Page 213)

9. EXplOSION prOTECTEd TYpE INSTrUMENTS
9-21 All Rights Reserved. Copyright © 2003, Rota Yokogawa IM 01R04B04-00E-E 8th edition March 01, 2011 -00
Coherence between temperature class, ambient- and medium temperature/
temperature of heat carrier :
RCCS30 to RCCS33
without insulation
RCCS30 to RCCS33
with factory insulation
Temp.
class
Max. ambient
temperature
Max. process
temperature
Max. ambient
temperature
Max. process
temperature
T6 50°C / 122°F 60°C / 140°F 60°C / 140°F 60°C / 140°F
T5 50°C / 122°F 80°C / 176°F 80°C / 176°F 90°C / 194°F
T4
80°C / 176°F
50°C / 122°F 100°C / 212°F
120°C / 248°F
80°C / 176°F 130°C / 266°F
T3 80°C / 176°F 150°C / 302°F 80°C / 176°F 150°C / 302°F
T2 80°C / 176°F 150°C / 302°F 80°C / 176°F 150°C / 302°F
RCCS34 to RCCS39/XR
without insulation
RCCS34 to RCCS39/XR
with factory insulation
RCCT34 to RCCT39/XR
Temp.
class
Max. ambient
temperature
Max. process
temperature
Max. ambient
temperature
Max. process
temperature
Max. ambient
temperature
Max. process
temperature
T6 40°C / 104°F 40°C / 104°F 65°C / 149°C 65°C / 149°F +55°C / 131°F 65°C / 149°C
T5 55°C / 131°F 55°C / 131°F 75°C / 167°F 75°C / 167°F +55°C / 131°F 80°C / 176°F
T4
80°C / 176°F
40°C / 104°F 100°C / 212°F
120°C / 248°F
70°C / 158°F 115°C / 239°F +55°C / 131°F 115°C / 239°F
T3
80°C / 176°F
40°C / 104°F 160°C / 320°F
180°C / 356°F
70°C / 158°F 180°C / 356°F +55°C / 131°F 150°C / 302°F
T2 80°C / 176°F 220°C / 428°F 65°C /149°F 275°C / 527°F +55°C / 131°F 150°C / 302°F
T1 80°C / 176°F 220°C / 428°F 45°C / 113°F 350°C / 662°F +55°C / 131°F 150°C / 302°F
For customer insulation of RCCS30 to 39/XR the following must be regarded :
The table "with factory insulation" is calculated with 80 mm insulation and k-factor = 0.4 W/m
2 K.
If your insulation data are worse than these use table "without insulation" !
NOTE
Flame proof (Ex d) relevant threads at converter housing and covers:
No. Position of thread Pitch Thread form +
quality of pitch
Threads
engaged
Depth of
engagement
(1) case Thread on electronic/display side 2 mm medium, 6H * ) ≥ 6 12 mm
(1) cover Thread on electronic/display side 2 mm medium, 6g * ) ≥ 6 12 mm
(2) case Thread on terminal box side 2 mm medium, 6H * ) ≥ 6 12 mm
(2) cover Thread on terminal box side 2 mm medium, 6g * ) ≥ 6 12 mm
(3) M Thread for cable glands M20 x 1.5 1.5 mm medium, 6H * ) ≥ 10 17 mm
(3) A/F Thread for cable glands 1/2 ´´ NPT 1.814 mm ** ) 6.5 ± 1 13.605 mm
* ) acc. ISO 965-1 and ISO 965-3
** ) acc. ANSI B 1.20.1
If terminal enclosure is used as Ex e, the threads (2) and (3) in above table must be not be regarded.
F94.EPS
(1) (2)
(3)