Introduction:
The composition materials of S-type thermocouple bare wire are
usually platinum-rhodium alloy wire (platinum 90%, rhodium 10%) and
platinum-rhodium alloy wire (platinum 94%, rhodium 6%). This
combination has good high temperature stability and high accuracy,
making the S-type thermocouple bare wire suitable for a wide
temperature measurement range.
S-type thermocouple bare wire is a commonly used thermocouple
temperature measurement device, widely used in industrial control
and scientific research fields. It consists of two alloy wires of
different metals and measures temperature changes through the
thermoelectric effect.
The structure of the S-type thermocouple bare wire is relatively
simple and consists of two alloy wires. One end of the two wires is
connected together to form a measurement point, and the other end
is connected to a temperature measurement device, such as a
temperature transmitter or a data acquisition system. The measuring
point is exposed to the environment to be measured, and temperature
changes will cause a slight potential difference between the alloy
wires. By measuring this potential difference, the temperature of
the environment can be accurately calculated.
Type S thermocouple bare wire has many advantages, such as a wide
temperature measurement range (usually from 0 degrees Celsius to
1768 degrees Celsius), higher accuracy and reliability, and faster
response time. It also has good corrosion resistance and low
thermocouple resistance drift, making it suitable for applications
requiring high accuracy and long-term stability.
Characteristic:
- Thermocouple material: S-type thermocouple bare wire is composed of
platinum (Platinum) and rhodium (Rhodium) alloy. Platinum is the
positive electrode of the S-type thermocouple bare wire, and
rhodium is the negative electrode.
- Temperature range: Type S thermocouple bare wire is suitable for a
wide temperature range, typically measuring temperatures from 0°C
to 1,600°C (32°F to 2,912°F).
- Linear characteristics: S-type thermocouple bare wire has excellent
linear characteristics and can provide high-precision and stable
temperature measurement.
Advantage:
- High temperature performance: S-type thermocouple bare wire is
suitable for temperature measurement in high temperature
environments and has good stability and corrosion resistance.
- High precision: S-type thermocouple bare wire has high precision
and stability, providing accurate temperature measurement results.
- Wide temperature range: S-type thermocouple bare wire is suitable
for a wide range of temperature measurements, including high
temperature and extremely low temperature environments.
Relevant specific parameters:
- Temperature range: 0°C to 1,600°C (32°F to 2,912°F)
- Thermoemf output: Varies based on temperature changes, usually in
the microvolt (μV) level.
- Linear characteristics: Excellent linear characteristics.
- Sensitivity: Varies based on specific model and manufacturer.
Code | Wire Component of the thermocouple |
+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 |
| ASTM | ANSI | IEC | DIN | BS | NF | JIS | GOST |
| (American Society for Testing and Materials) E 230 | (American National Standard Institute) MC 96.1 | (European Standard by the International Electrotechnical Commission
584)-1/2/3 | (Deutsche Industrie Normen) EN 60584 -1/2 | (British Standards) 4937.1041, EN 60584 - 1/2 | (Norme Française) EN 60584 -1/2 - NFC 42323 - NFC 42324 | (Japanese Industrial Standards) C 1602 - C 1610 | (Unification of the Russian Specifications) 3044 |
| Diameter/mm | Type | Long time Working | Short period Working | | temperature/°C | temperature/°C | | 0.5 | S | 1300 | 1600 | | 0.5 | R | 1300 | 1600 | | 0.5 | B | 1600 | 1700 |
|
| 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 |
|
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Specific application areas:
- Oil and natural gas industry: S-type thermocouple bare wire is
widely used in high-temperature ambient temperature measurement and
control in the oil and natural gas industry, such as oil refining,
natural gas extraction, etc.
- Furnace and heat treatment industry: S-type thermocouple bare wire
is widely used in temperature measurement and control in
high-temperature processes such as furnaces and heat treatment
equipment.
- Iron and steel metallurgy: S-type thermocouple bare wire is used
for temperature measurement and control of high-temperature molten
metal in the field of iron and steel metallurgy.
Q&A:
What is the temperature range of S-type thermocouple bare wire?
A: Type S thermocouple bare wire typically has a temperature range
between 0°C and 1,600°C.
What are the advantages of S-type thermocouple bare wire?
Answer: S-type thermocouple bare wire has the advantages of high
temperature performance, high precision and wide temperature range.
What applications are S-type thermocouple bare wire suitable for?
Answer: S-type thermocouple bare wire is suitable for oil and gas
industry, furnace and heat treatment industry, iron and steel
metallurgy and other application fields.
