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This factory main production thermocouple, heat resistance is an instrument, such as production of prefabricated thermocouple USES the international IEC standards.At the same time, the use of machinery and electronics industry designed in the thermocouple, spectrum.
An overview of the
Industrial prefabricated thermocouple as the temperature transducer and display instrument, usually record instrument and electronic regulator. It can directly measure all kinds of production process from 0 ℃ to 1800 ℃ range of liquid, steam and gas medium, as well as the surface temperature of the solid.
According to the provisions of the state, my company production in conformity with IEC international standard score 30 - platinum rhodium 6 degrees, platinum, rhodium, platinum rhodium 10 - platinum, nickel chrome - nickel, nickel chromium - constantan fabricated thermocouples, and so on.
Thermocouple assembly are typically installed by thermal components, fixtures and junction box and other major parts.
Optional model
B, S, K, E
The main technical parameters
The measuring range and basic error limits
| Thermocouple type | Code name | Degree, | Measuring range | The basic error limits |
| Nickel chrome - constantan | WRK | E | 0-800 ℃ | ±0.75%t |
| Nickel chrome - nickel silicon | WRN | K | 0-1300 ℃ | ±0.75%t |
| 13 - platinum rhodium platinum | WRB | R | 0-1600 ℃ | ±0.25%t |
| Platinum rhodium 10 - platinum | WRP | S | 0-1600 ℃ | ±0.25%t |
| Platinum rhodium 30 - platinum rhodium 6 | WRR | B | 0-1800 ℃ | ±0.25%t |
Note: t for thermal components measured temperature (℃)
Thermocouple time constant
| Level of thermal inertia | Time constant (in seconds) | Level of thermal inertia | Time constant (in seconds) |
Ⅰ | 90-90. | Ⅲ | 10 to 30 |
Ⅱ | 30-90. | Ⅳ | The < 10 |
Thermocouple nominal pressure: generally refers to the working temperature protection tube can withstand the static pressure and rupture.
Minimum thermocouple insertion depth: should be no less than 8 to 10 times of the protective casing diameter (exception), products
Insulation resistance: when the temperature of the surrounding air for 15 to 35 ℃, relative humidity of < 80% or greater insulation resistance 5 ohms voltage (100 v).Thermocouple with splash proof junction box, when relative temperature is 93 + 3 ℃, insulation resistance acuity 0.5 ohms voltage (100 v)
Under the high temperature insulation resistance: thermocouple under high temperature, the hot electrode (including double branch) and protecting tube and double branch thermal insulation resistance between the electrodes (per metre) should be more than the value given in the table below.
| Rules of use for a long time temperature (℃) test temperature (℃) insulation resistance (Ω) 60060072000 or 80080025000 or 60060072000 or higher |
