B57514K Datasheet, PDF (3/9 Pages) EPCOS – NTC thermistors for temperature measurement

Temperature measurement
Probe assemblies
B57514K
K514
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Voltage proof test
Insulation test
Standard
IEC
60068-2-2
IEC
60068-2-67
Test conditions
Storage at upper category
temperature
T: 200 °C
t: 1000 h
Temperature of air: 85 °C
Relative humidity of air: 85%
Duration: 1000 h
Lower test temperature: 20 °C
Upper test temperature: 200 °C
Number of cycles: 1000
Medium: air
Applied voltage between metal
housing and sensor wires:
1250 V AC/60 s
The sensors are placed in a
vessel containing metallic balls
of 1 mm diameter (with total
immersed head) at room
temperature. The applied voltage
is 500 V DC.
∆R₂₅/R₂₅
(typical)
< 3%
< 3%
< 3%
Remarks
No visible
damage
No visible
damage
No visible
damage
No flashover
Above
100 MΩ
Please read Cautions and warnings and
Important notes at the end of this document.
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