Device description, 7 temperature classes – KROHNE OPTITEMP TC 100 Ex EN User Manual
Page 7
DEVICE DESCRIPTION
2
7
OPTITEMP TR/TC100
www.krohne.com
08/2010 - 4001022701 - Ex AD OPTITEMP TR/TC 100 R01
2.7 Temperature classes
The permissible ambient temperature range of the measuring inserts at the terminal block is:
T
amb
= -40°C...+100°C / -40°F...+212°F.
Due to the influence of the product temperature, no fixed temperature class is assigned to
measuring inserts. The temperature class of the devices is much more a function of the existing
product temperature and the maximum value of the sensor output P
i
. Please consult the
following tables for the assignment of the respective version.
Maximum permissible product temperature in °C
Maximum permissible product temperature in °F
CAUTION!
The maximum permissible product temperatures listed in the tables are valid under the
following conditions:
•
The measuring insert is installed and operated in accordance with the installation
instructions in the standard documentation.
•
Ensure that the measuring insert is not heated by the effects of additional heat radiation
(sunshine, neighbouring system components) and thus operated above the permissible
ambient temperature range.
Temperature
class
T
o
P
i
≤
50mW
P
i
≤
100mW
P
i
≤
200mW
P
i
≤
500mW
P
i
≤
650mW
P
i
≤
750mW
P
i
≤
800mW
P
i
≤
1000mW
[°C]
T1
450
436
432
425
402
391
383
380
365
T2
300
286
282
275
252
241
233
230
215
T3
200
191
187
180
157
146
138
135
120
T4
135
126
122
115
92
81
73
70
55
T5
100
91
87
80
57
46
-
-
-
T6
85
76
72
65
42
-
-
-
-
Temperature
class
T
o
P
i
≤
50 mW
P
i
≤
100 mW
P
i
≤
200 mW
P
i
≤
500 mW
P
i
≤
650 mW
P
i
≤
750 mW
P
i
≤
800 mW
P
i
≤
1000 mW
[°F]
T1
842
816
809
797
755
735
721
716
689
T2
572
546
539
527
485
465
451
446
419
T3
392
375
368
356
314
294
280
275
248
T4
275
258
251
238
197
177
163
158
131
T5
212
195
188
176
134
114
-
-
-
T6
185
168
161
149
107
-
-
-
-
.book Page 7 Wednesday, August 11, 2010 11:40 AM