Temperature
Measuring insert
For high-temperature thermocouple
Model TC85
WIKA data sheet TE 66.85
Applications
■ Replacement measuring insert for servicing
■ Furnaces, kilns and ovens
■ Furnaces with oxidizing and neutral atmosphere
■ Glass, fibre and ceramic industries
■ Research and development facilities
Special features
■ Application ranges from 0 ... 1,700 °C
■ Manufactured from the finest high-purity, high-temperature
ceramics and metals
■ Suitable for mounting in ceramic thermowells
Description
TC85 series thermocouples are alumina ceramic insulated Fig. left: fish spine insulators
sensors for use in extreme high-temperature applications. Fig. centre: transition with lead wire
The high-purity ceramic insulator is designed with continuous Fig. right: terminal plate with lead wire
multiple holes and houses the noble metal thermocouple
wire. A variety of mounting and termination styles are
available.
WIKA data sheet TE 66.85 ∙ 10/2020 Page 1 of 4
Data sheets showing similar products:
Thermocouple straight version per DIN 50446; model TC80; see data sheet TE 65.80
Sensor
Thermocouple per IEC 60584-1 or ASTM E230
Type S, R or B (single or dual thermocouple)
Sensor types
Type Operating temperatures of the thermocouple
IEC 60584-1 ASTM E230
Class 1 Class 2 Class 3 Standard Special
S 1,600 °C 1,600 °C - 1,480 °C 1,480 °C
R 1,600 °C 1,600 °C - 1,480 °C 1,480 °C
B - 1,700 °C 1,700 °C 1,700 °C -
The application range of these thermometers is limited by the
permissible maximum temperature of the thermocouple and
by the maximum permissible temperature of the thermowell
material.
Listed thermocouples are available both as single and dual.
The measuring point (hot junction) of the probe is supplied
ungrounded.
For detailed specifications for thermocouples, see
IEC 60584-1 or ASTM E230 and Technical information
IN 00.23 at www.wika.com.
Tolerance value
For the tolerance value of thermocouples, a cold junction
temperature of 0 °C has been taken as the basis.
Electrical connection
Single thermocouple Dual thermocouple
3166822.03
The colour coding at
the positive poles of the
instrument decides the
correlation of polarity and
terminal.
For the electrical connections of built-in temperature transmitters see the corresponding data sheets or operating instructions.
WIKA data sheet TE 66.85 ∙ 10/2020 Page 2 of 4
Examples of sensor designs
Transition with lead wire
A-DIM
Fish spine insulators
A-DIM
Terminal plate with lead wire
A-DIM
Lead wire insulation Termination accessories
■ Individual fibreglass leads ■ Wire clamp
■ Individual PTFE leads ■ Compression adapter
■ Fish spines ■ Dual compression adapter
Terminations Materials
■ Stripped leads Sheath material
■ Spade lugs Aluminum oxide ceramic (alumina)
■ Standard plug 2-pin (male)
■ High-temperature standard plug 2-pin (male)
■ Standard solid pin plug 2-pin (male)
■ Copper sleeves
WIKA data sheet TE 66.85 ∙ 10/2020 Page 3 of 4
Ordering information
Model / Sensor / Sensor design / Lead wire insulation / Terminations / Termination accessories / Options
© 10/2020 WIKA Alexander Wiegand SE & Co. KG, all rights reserved.
The specifications given in this document represent the state of engineering at the time of publishing.
We reserve the right to make modifications to the specifications and materials.
WIKA data sheet TE 66.85 ∙ 10/2020 Page 4 of 4
10/2020 EN
WIKA Alexander Wiegand SE & Co. KG
Alexander-Wiegand-Straße 30
63911 Klingenberg/Germany
Tel. +49 9372 132-0
Fax +49 9372 132-406
info@wika.de
www.wika.de
