Changzhou Victory Technology Co., Ltd
                                                                                                           
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B R S Type Platinum-Rhodium Thermocouple Bare Wire for High Temperature Measurement 0-1820°C

Price Negotiable
Price: Negotiable
MOQ: 5 Kg
Delivery Time: 5-21 days
Brand: Victory
Product Description
Platinum-rhodium alloy thermocouple bare wire is a precision temperature measurement device composed of platinum and rhodium alloy wires. Available in B-type, R-type, and S-type configurations, these thermocouples operate on the thermoelectric effect principle, where temperature changes generate measurable potential differences between alloy wires. They offer excellent corrosion resistance and minimal thermocouple resistance drift, making them ideal for applications requiring high accuracy and long-term stability.
Type B Thermocouple Bare Wire
Type B thermocouple bare wire uses platinum-rhodium alloy wire (70% platinum, 30% rhodium) and platinum-rhodium alloy wire (94% platinum, 6% rhodium) as thermocouple materials.
  • Temperature Range: 0°C to 1,820°C (32°F to 3,308°F)
  • Advantages: Excellent linear characteristics and stability for high-temperature environments
  • Output: Microvolt (μV) level thermoelectric potential
  • Applications: Glass industry, ceramic industry, and other high-temperature measurement and control fields
Type R Thermocouple Bare Wire
Type R thermocouple bare wire uses platinum-rhodium alloy wire (87% platinum, 13% rhodium) and pure platinum wire.
  • Temperature Range: 0°C to 1,600°C (32°F to 2,912°F)
  • Advantages: Superior linear characteristics and stability for high-precision measurement
  • Output: Microvolt (μV) level thermoelectric potential
  • Applications: Steel smelting, aluminum plants, and industrial high-temperature process control
Type S Thermocouple Bare Wire
S-type thermocouple bare wire uses platinum-rhodium alloy wire (90% platinum, 10% rhodium) and platinum-rhodium alloy wire (94% platinum, 6% rhodium).
  • Temperature Range: 0°C to 1,600°C (32°F to 2,912°F)
  • Advantages: Outstanding linear characteristics and stability for diverse temperature measurement needs
  • Output: Microvolt (μV) level thermoelectric potential
  • Applications: Oil and gas industry, furnace and heat treatment industry, and steel metallurgy
Thermocouple Wire Specifications
Wire Composition Codes
Code Positive Leg Negative Leg
N Ni-Cr-Si(NP) Ni-Si-magnesium (NN)
K Ni-Cr(KP) Ni-Al(Si) (KN)
E Ni-Cr(EP) Cu-Ni (EN)
J Iron (JP) Cu-Ni (JN)
T Copper (TP) Cu-Ni (TN)
B Platinum Rhodium-30% Platinum Rhodium-6%
R Platinum Rhodium-13% Platinum
S Platinum Rhodium-10% Platinum
International Standards Compliance
ASTM ANSI IEC DIN BS NF JIS GOST
E 230 MC 96.1 584-1/2/3 EN 60584-1/2 4937.1041, EN 60584-1/2 EN 60584-1/2, NFC 42323, NFC 42324 C 1602, C 1610 3044
Working Temperature Specifications
Diameter (mm) Type Long Term Working (°C) Short Period Working (°C)
0.5 S 1300 1600
0.5 R 1300 1600
0.5 B 1600 1700
Chemical Composition
Conductor Name Polarity Code Pt% Rh%
Pt90Rh Positive SP 90 10
Pt Negative SN,RN 100 --
Pt87Rh Positive RP 87 13
Pt70Rh Positive BP 70 30
Pt94Rh Negative BN 94 6
Product Images
Type B thermocouple bare wire close-up showing platinum-rhodium alloy construction Thermocouple bare wire spool with measurement scale demonstrating wire diameter
Contact Information
Email: victory@dlx-alloy.com
OEM Service: Customized sizes available
Experienced factory for OEM & ODM services
Frequently Asked Questions
Which temperature range is suitable for type B thermocouple bare wire?
Type B thermocouple bare wire is suitable for high temperature measurement ranges from 0°C to 1,820°C (32°F to 3,308°F).
What are the main advantages of type R thermocouple bare wire?
R-type thermocouple bare wire has excellent linear characteristics and stability for high-precision temperature measurement results.
In what application areas are S-type thermocouple bare wires common?
S-type thermocouple bare wire is commonly used in temperature measurement and control in the oil and gas industry, furnace and heat treatment industry, and steel metallurgy.

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Company Changzhou Victory Technology Co., Ltd
Location NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu
Contact Person Victory

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