Yokogawa RotaMASS 3-Series User Manual
Page 195
9. EXplOSION prOTECTEd TYpE INSTrUMENTS
9-3
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" !
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.
NOTE
F94.EPS
(1)
(2)
(3)