NTC thermistors
Description
NTC thermistors for temperature measurement
Probe assemblies
Series/Type: Date:
B57514K February 2009
© EPCOS AG 2009.
Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited.
Temperature measurement Probe assemblies
B57514K K514
Applications Temperature measurement in household appliances (e.
g.
dryers, cookers, small appliances)
Features NTC thermistor assembled in a stainless steel case with cable outlet Temperature range 20 to 200 °C Wire heat-resistant up to 200 °C (PTFE-insulated wire in fiberglass sleeve) Fast and simple flange installation
Options Alternative casing, cable lengths, R/T characteristics, connectors available on request.
Delivery mode Bulk
Dimensional drawing
Dimensions in mm Approx.
weight 4.
5 g
General technical data
Climatic category Resistance tolerance Rated temperature Dissipation factor Thermal time constant Insulation resistance Test voltage
(IEC 60068-1)
(in air) (in water) (V = 500 V DC) (t = 1 s)
Electrical specification and ordering codes
R100 Ω
3300
R25 Ω
48538
No.
of R/T characteristic 7002
∆RR/RR TR δth τa Rins Vtest
20/200/42 ±2.
5 100 approx.
3 approx.
3 > 100 1250
% °C mW/K s MΩ V AC
B25/100 K
3988 ±1%
Ordering code B57514K0493A001
Please read Cautions and warnings and Important notes at the end of this document.
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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 v...
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