BetaTHERM Sensors
BetaCurve Interchangeable Thermistor Series II
BetaCurve Interchangeable Thermistor Series II
Applications
¥ Temperature sensing, control and compensation.
¥ P.C. board mounting for over temperature
protection.
¥ Automotive car seat heater control and engine
management.
¥ Assembly into probes for a wide variety of
applications in industrial temperature control and
instrumentation.
.
Features
¥ Rapid Time Response (1 second typical in liquids).
¥ DC (Dissipation Constant) = 0.85mW/ oC
typical in still air at 25oC.
¥ Min./Max. Temperature Exposure = -80 to 150oC.
¥ Available in custom probe assemblies.
¥ Proven Stability and Reliability.
¥ Teflon Insulated lead wires.
¥ Choice of 4 temperature tolerance classifications:
Tolerance Code:
Specification:
A
+/-0.1oC, 0oC to 70oC
B
+/-0.2oC, 0oC to 70oC
C
+/-0.5oC, 0oC to 70oC
D
+/-1.0oC, 0oC to 70oC
Similar to the
BetaCURVE Thermistor Series I,
the
Series II
thermistors are small epoxy coated devices. The
same quality thermistor elements are used during assembly.
Series II are manufactured using 30 AWG teflon insulated
lead wires. They offer the same choice of precision
temperature tolerance classifications for a wide variety of
customer applications.
The
Series II
differs from
Series I
marginally with
respect to D.C. The typical value of 0.85mW/oC in still air
at 25oC is due to the larger lead wire diameter made of pure
copper.
The insulated lead wires offer customers the added
protection of TFE teflon insulation that has the highest
temperature rating (150oC) of the most common insulating
materials. TFE teflon is a material that does not bond easily
with epoxies or adhesives. For this reason the surface of the
teflon wire is etched, which enhances bondability for
applications that require mounting or potting the thermistor
with epoxies or adhesives.
The series is produced in high volume as a
Standard configuration. Other configurations are available
on a custom basis. Larger or smaller lead wires can be used
with the same chip elements and with insulating materials of
PVC, Kynar, Tefzel, Nylon/Polyurethane, etc. Contact
Applications Engineering Group for support if requirements
differ from the standard configuration as shown above.
Thermistor Configuration
30 AWG Sliver Plated
Copper Lead Wires
With Etched
TFE Telfon Insulation,
Thermally Conductive
Epoxy Coating
2.413mm
(0.095Ó)
Max. Dia.
12.7mm +/-3.3mm
(0.50Ó +/-0.13Ó)
76.2mm +/-3.3mm
(3.00Ó +/-3.13Ó)
Example: BetaCURVE Series II Part Number
10K 3 A 1 I A
Tolerance Classification
Insulated Lead Wires
BetaCURVE Series
Epoxy Coated
Material Curve #
Resistance Value @ 25oC
Ireland 353-91-753238
U.S.A. 508-842-0516
BetaTHERM
54
Web: http://www.betatherm.com
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