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Resistance Temperature Detectors (RTDs)
Platinum resistance thermometers utilizing the phenomenon that the electrical resistance of any metallic conductor varies according to its temperature are widely used in industries for the measurement of temperature in the range from cryogenic to high temperature. With the best staff and advanced technologies, we manufacture a wide variety of quality products for use in general industry and explosive and hazardous areas.
■Thin-film Platinum Resistance Element
■Protection Tube Type RTD
■Metal Sheathed RTD (RESIMIC)
■Standard Platinum Resistance Thermometer (SPRT)
Thin-film Platinum Resistance Element
Because of its construction, thin-film platinum resistance elements exhibit excellent long-term stability, interchangeability, high accuracy and high resistance to vibration. They are suited for a wide range of applications such as automobile, home electric appliances, air conditioning, energy management, medical instruments, industrial equipment, and etc.
Nominal Resistance(Ω) Class Operating Temp.(℃)
100
A
-70 - +300
Nominal Dimensions (mm) Lead Wire (mm)
Length
Width
Thickness
Length
Dia.
Material
1.6
1.2
0.8
7
0.2
Pt clad Ni
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       Metal Sheathed RTD (RESIMIC)
RESIMIC has a monolithic structure comprising of platinum resistance element and MI cable (MgO compacted, metal sheathed lead wires). This RTD has very quick response, longer service life and high accuracy under critical conditions.
Type
PT100, JPT100
Sheath O.D. (mm)
3.2, 4.8, 6.4, 8.0
Lead Connection
2-wires, 3-wires, 4-wires
Number. of Element
1(single), 2(double)
Rated Current
1mA, 2mA, 5mA(only for JPT100)
Class
JIS Class A, JIS Class B
Code Operating Temperature Range
LL
-200℃ under -40℃
ML
-40℃   +250℃
MH
    +400℃
HL
    +500℃
HH
  under +650℃
*The above operating temperature range is our internal arrangement in production.
Standard Models of RESIMIC (Model: RM)
RMB: Flexible Lead Type
RMN: Screwed-in Plain Nipple Type
RMES(L): Metal Connector Type
RMNF: Flange (Ferrule) Type
RMH: Terminal Head Type
RMP: Wall-hanging Type (for room temp.)
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Protection Tube Type RTD
This is the most typical resistance temperature detector comprising of metal protection tube in which the mica type RTD element is embedded with ceramic insulators and lead wires. There are two types, standard type and vibration-proof type. It has high stability and reproducibility because of its simple construction.
Type
PT100, JPT100
Lead Connection
2-wires, 3-wires, 4-wires
Number of Element
1(single), 2(double)
Rated Current
1mA, 2 mA, 5mA(only for JPT100)
Class
JIS Class A, JIS Class B
Code Operating Temperature Range
L
-200℃ +100℃
M
0℃ +250℃
H
0℃ +400℃
*The above operating temperature range is our internal arrangement in production.
Standard Models of Protection Tube Type RTD (Model: RE)
RE12: Metal Protection Tube Type
RE13: Metal Protection Tube Type
(Screwed)
RE14: Metal Protection Tube Type
(Flanged)
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Standard Platinum Resistance Thermometer (SPRT)
標準白金抵抗温度計 We have developed a SPRT ( BB 660/25.5  BB(S) 962/2.5 ), which provides superior stability by employing a sensing element with a single coil structure. Many experienced professionals in temperature measurement, such as those at Japanese National Laboratory and in other organizations holding JCSS accreditation, have adopted the Yamari’s SPRTs for use within their temperature laboratories.
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