8
TECHNICAL DATA
80
H250 M40
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
8.2.2 Temperatures for devices with electrical components
DANGER!
For devices to be used in hazardous areas, special temperature ranges apply. These can be
found in the Ex supplementary instructions.
Type
Ambient temperature
[
°
C]
[
°
F]
ESK4A, ESK4-FF, ESK4-PA
1
-40...+70
-40...+158
Limit switches SJ3,5-SN / I7S23,5-N / Reed SPST
-40...+70
-40...+158
Limit switches SC3,5-N0 / SJ3,5-S1N / SB3,5-E2
-25...+70
-13...+158
Table 8-4: Ambient temperature in
°
C and
°
F
1
Display contrast out of the temperature range 0...+60
°
C / +32...+140
°
F decreasing.
INFORMATION!
The device must not be heated by radiated heat (e.g. exposure to the sun) to an electronics
housing surface temperature above the maximum permissible ambient temperature.
A sunshade is available as option.
Maximum product temperature in
°
C
T
amb
< +40
°
C
T
amb
< +60
°
C
1
EN
ASME
Version with
Standard HT
Standard HT
DN15,
DN25
1/2", 1"
ESK4A, ESK4-FF, ESK4-PA
+200
+300
+180
+300
ESK4-T
+200
+300
+140
+290
Limit switch NAMUR
+200
+300
+200
+300
Limit switch 3-wire
+200
+300
+130
+295
DN50
2"
ESK4A, ESK4-FF, ESK4-PA
+200
+300
+165
+300
ESK4-T
+200
+300
+140
+290
Limit switch NAMUR
+200
+300
+200
+300
Limit switch 3-wire
+200
+300
+120
+195
DN80,
DN100
3", 4"
ESK4A, ESK4-FF, ESK4-PA
+200
+300
+150
+250
ESK4-T
+200
+300
+130
+270
Limit switch NAMUR
+200
+300
+200
+300
Limit switch 3-wire
+190
+300
+110
+160
Table 8-5: Maximum product temperature in
°
C
1
If there are no heat insulation measures, a heat-resistant cable is necessary (continuous operating temperature of the cable to be
used: +100
°
C)