R
Bare
Solid
Heating
Ptrh13-PT
No
Bare
Round Wire
Heating, Temperature Measurement
ISO9001, RoHS
Liqun
0.2-0.5
Platinum
Rhodium
Yes
1g
Liqun
Plywood Cases
0.2-0.5
China
75052200
Product Description
PtRh13-Pt Platinum Rhodium R type Thermocouple Bare alloy Wire
R type (platinum rhodium) thermocouples are noble metal thermocouples. The diameter of the wire is stipulated as 0.2mm-0.5mm, the allowable deviation is -0.015mm, the nominal chemical composition of the positive electrode (RP) is platinum-rhodium alloy, which contains 13% rhodium and 87% platinum, and the negative electrode (RN) is pure platinum. The maximum long-term service temperature is 1600ºC, and the maximum short-term service temperature is 1800ºC.
1.Chemical composition and mechanical properties
Product | Chemical Composition/% | Density (g/cm3) | Melting point (ºC) | Resistivity (μΩ.cm) | Tensile Strength (Mpa) | |
Pt | Rh | |||||
RP(+) Platinum-Rhodium | 87 | 13 | 19.61 | 1860 | 19.6 | 344 |
RN(-) Platinum | 100 | - | 21.46 | 1769 | 10.4 | 137 |
2.Maximum operating temperatures
Product | Alloy wire Dia/mm | The long-term operating temperatures/°C | The short-term operating temperatures/°C |
RP/RN | 0.5 | 1400 | 1600 |
3.EMF reference table (μV)
Product | Operating temperatures/°C | Nominal value of thermoelectric EMF | Level I | |
Tolerance | Range of EMF | |||
RP/RN | 100 | 647 | ±4 | 643-651 |
200 | 1 469 | ±5 | 1 464-1 482 | |
300 | 2 401 | ±6 | 2 395-2 407 | |
400 | 3 408 | ±6 | 3 402-3 414 | |
500 | 4 471 | ±7 | 4 464-4 478 | |
600 | 5 583 | ±7 | 5 576-5 590 | |
700 | 6 743 | ±8 | 6 735-6 751 | |
800 | 7 950 | ±10 | 7 940-7 960 | |
900 | 9 205 | ±12 | 9 193-9 217 | |
1000 | 10 506 | ±13 | 10 493-10 519 | |
1100 | 11 850 | ±15 | 11 835-11 865 | |
1200 | 13 228 | ±17 | 13 211-13 245 | |
1300 | 14 629 | ±18 | 14 611-14 647 | |
1400 | 16 040 | ±20 | 16 020-16 060 | |
1500 | 17 451 | ±21 | 17 430-17 472 | |
1600 | 18 849 | ±22 | 18 827-18 871 |





Q1.What is the nature of the company?
A: We are a production enterprise, our company has its own factory.
Q2. What is the MOQ of an order of your company?
A: Our company's MOQ is 100 kg for each type of product.
Q3.Can I get a sample before mass production ?
A: Sample is free,the shipping cost of the sample is paid by the customer .
Q4.How long is the mass production cycle of product?
A: We will end the production within 15-20 days after receiving the deposit.
Q5.What payment method does your company support?
A: We can accept T/T, L/C ,you can choose the one which the most convenient or most effective for you .
A: We are a production enterprise, our company has its own factory.
Q2. What is the MOQ of an order of your company?
A: Our company's MOQ is 100 kg for each type of product.
Q3.Can I get a sample before mass production ?
A: Sample is free,the shipping cost of the sample is paid by the customer .
Q4.How long is the mass production cycle of product?
A: We will end the production within 15-20 days after receiving the deposit.
Q5.What payment method does your company support?
A: We can accept T/T, L/C ,you can choose the one which the most convenient or most effective for you .