2
DEVICE DESCRIPTION
6
DK32 DK34
www.krohne.com
04/2015 - 4000422303 AD DK32/34 II2G R03 en
2.7 Ambient temperature / temperature classes
Due to the influence of the product temperature, variable area flowmeters with built-in electrical
equipment (electric variants) are not assigned to any fixed temperature class. The temperature
class of these devices is rather a function of the product temperature and ambient temperature
that is present and the specific device version. Please see the following tables for the
assignments.
The tables take into account the following parameters:
•
Ambient temperature T
amb.
•
Product temperature T
m
DK3./../.././../A
–
Ex permissible medium and ambient temperatures
INFORMATION!
The maximum permissible product temperatures listed in the tables are valid under
the following conditions:
•
The measuring device is installed and operated in accordance with the installation
instructions in the installation and operating manual.
•
It must be ensured that the flowmeter is not heated by the effects of additional
heat radiation (sunshine, neighbouring system components) and
thus operated above the permissible ambient temperature range.
•
Insulation must be limited to the piping.
Unobstructed ventilation of the indicator part must be ensured.
Temperature
class
Ambient
temperature
Maximum permissible medium temperature
with connector (S) or cable gland (L)
Type DK32
Type DK34
[
°
C]
[
°
F]
[
°
C]
[
°
F]
[
°
C]
[
°
F]
T6
-20...+40
-4...+104
75
167
80
176
-20...+50
-4...+122
70
158
70
158
-20...+60
-4...+140
60
140
60
140
T5
-20...+40
-4...+104
100
212
100
212
-20...+50
-4...+122
95
203
100
212
-20...+60
-4...+140
85
185
90
194
T4
-20...+40
-4...+104
135
275
135
275
-20...+50
-4...+122
130
266
135
275
-20...+60
-4...+140
120
248
130
266
-20...+90
-4...+194
90
194
90
194
T3...T1
-20...+40
-4...+104
135
275
150
302
-20...+50
-4...+122
130
266
140
284
-20...+60
-4...+140
120
248
130
266
-20...+90
-4...+194
90
194
90
194
