STANDARD THERMOCOUPLESMODEL C810
(Pt/Pd thermocouple for secondary standard)
C810 is a standard thermocouple manufactured
with materials of high purity platinum (+ pole) andpalladium (- pole) which has been commercialized
under the guidance of National Metrology Instituteof Japan, AIST. It is more stability in measuring
hightemperature
thanthethermocouple
manufactured with metal (R, S, B) which has been
conformed to JIS C1602 (IEC60584).

zC810 is designed as a standard thermocouple used
for secondary standard at freezing point of silver andcopper. The protecting tube is also easily removable.

 MODELS
C810-1
Calibration point
AG: Silver
CU: Copper GENERAL SPECIFICATIONS
Temperature:

Exclusive use for Ag (961.78°C) andCu (1084.62°C)*
Materials:＋ --- Platinum (Purity of 99.999%)－ --- Palladium (Purity of 99.99%)
Wire diameter:ø0.5mmWire length:
2800mmProtecting tube:
Quartz ø 7mm x 900mm
Reference junction: ø4.8mm x 300mm with SUS316
Protecting tube
External lead wire: Copper lead wire 2m with gold chip

＊ Conformed to JCT21306 specific application documents(contact type thermometer) issued by National Institute ofTechnology and Evaluation.

 DIMENSIONS

Unit: mm1PSE-700

MODEL C820 (Pt/Pd thermocouple)

C820 is a standard thermocouple manufactured
with materials of high purity platinum (+ pole) andpalladium (- pole) which has been commercialized
under the guidance of National Metrology Instituteof Japan, AIST. It is more stability in measuring
hightemperature
thanthethermocouple
manufactured with metal (R, S, B) which has been
conformed to JIS C1602 (IEC60584).

zC820 is designed as a standard thermocouple forthermometer calibration. Standard electromotive force
is ASTM Vol.14.03 E1751. It will also be conformed toIEC.

 DIMENSIONS

 MODELC820-2NN

 GENERAL SPECIFICATIONS
Temperature range: 0 to 1300°C
Materials:＋ --- Platinum (Purity of 99.999%)－ --- Palladium (Purity of 99.99%)
Wire diameter:ø0.5mmWire length:
1800mmProtecting tube:
Corundum recrystallized alumina ø8mm
x600mmReference junction: ø5mm x 300mm with SUS316
protecting tube
External lead wire: Copper lead wire 1.5m with gold chip

 CALIBRATION
For applying sensor as a standard thermometer,
temperature-thermoelectromotive force table must beprepared by calibrating them. CHINO prepares atemperature-thermoelectromotive force table at CHINO’sstandard laboratory if required (Calibration charge isseparately required).
Calibration code: F-3
Calibration point: Freezing point of tin, zinc, aluminum,
silver and copper

2Unit: mm

MODEL C850 (Au/Pt thermocouple)

C850 is a standard thermocouple manufactured
with materials of high purity gold (+ pole) andplatinum (- pole) which has been commercialized
by collaborative research with professor Goto from
College of Engineering in Tamagawa University. It
has smaller electromotive force drift and lessuncertainty when measuring high temperaturecomparing to the thermocouple manufactured withmetal (R, S, B) which has been conformed to JIS
C1602 (IEC60584).

 DIMENSIONSzLong term stability is 15mK (960°C /500hr). It enables
lower cost than platinum resistance thermometer andhigher accurate standard management than theformer thermocouples.
zElectromotive force is conformed to ASTM Voi.14.03
E1751 and it will also be adapted to IEC.
zFixed point calibration of tin, zinc, aluminum and silver
with uncertainty of 30mk (k=2) is available.

Unit: mm

 CHARACTERISTICS EXAMPLE

 MODELC850-1NN

 GENERAL SPECIFICATIONS
Temperature range: 0 to 1000°C
Materials:＋ --- Gold (Purity of 99.999%)－ --- Platinum (Purity of 99.999%)
Wire diameter:ø0.5mmWire length:
1800mmProtecting tube:
Quartz ø7mm x 600mm
Reference junction: ø5mm x 300mm with SUS316
protecting tube
External lead wire: Copper lead wire 1.5m with gold chip

Au/Pt thermocouple drift at Ag point CALIBRATION
For applying sensor as a standard thermometer,temperature-thermoelectromotive force table must beprepared by calibrating them. CHINO prepares atemperature-thermoelectromotive force table at CHINO’sstandard laboratory if required (Calibration charge isseparately required).
Calibration code: F-3B
Calibration point: Freezing point of tin, zinc, aluminum andsilver.

Au/Pt thermocouple inhomogeneity at Ag point3

MODELS C800-15 (S TYPE)
C800-35 (R TYPE)
C800-65 (B TYPE)
These sensors are standard sensors withmeasuring range from 200 to 1554 °C whichconstructed with a stem structure of a high purity
alumina ceramic protecting tube recrystallized.

MODEL C800-35

zStrictly selected bare thermocouple, unique cleaningand heat treatment techniques realized more stable
and high accurate sensors.
zThe thermocouples feature high heat conductivity andexcellent stability under an oxidation-reduction
atmosphere as protecting tube and insulation tube are
made of high purity recrystallized alumina.
zStandard thermocouples are excluded from ITS-90 as
reference however they are employed as industrial
standards.

 CALIBRATION

 GENERAL SPECIFICATIONS

zComparison test certificate issued by Japan
Electric Meters Inspection Corporation (JEMIC)

For applying sensor as a standard thermometer,
temperature-thermoelectromotive force table must beprepared by calibrating them. CHINO prepares atemperature-thermoelectromotive force table at CHINO’sstandard laboratory if required (Calibration charge isseparately required).
Calibration temperature: 0 to 1554 °C(Fixed point calibration test Code F-3, 4)(Comparison calibration test Code H-4, H-6)

C800-15JEMIC issues a test certificate obtained by a comparison
test at optional temperature between 0°C and 1100°C.
CHINO prepares this test certificate if requested.

Wire:
S typeWire diameter: ø0.5mm
Wire length:
1500mmMeasuring temperature range: Max.1400°C
Protecting tube:Corundum recrystallized alumina
ø6mm x 600mm

 DIMENSIONS

C800-35
Wire:
R typeWire diameter: ø0.5mm
Wire length:
1500mmMeasuring temperature range: Max.1400°C
Protecting tube:Corundum recrystallized alumina
ø6mm x 600mm
C800-65
Wire:
B typeWire diameter: ø0.5mm
Wire length:
1500mmMeasuring temperature range: Max.1554°C
Protecting tube:Corundum recrystallized alumina
ø6mm x 600mmUnit: mm

Specifications subject to change without notice. Printed in Japan (I) 2007. 8 Recycled Paper

32-8, KUMANO-CHO, ITABASHI-KU, TOKYO 173-8632
PHONE: +81-3-3956-2171
FAX: +81-3-3956-0915
E-mail: inter@chino.co.jp

Website: http://www.chino.co.jp

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