Product description:
application
Professional design for petrochemical industry department, can be directly measured - 200 ℃ to 1600 ℃ within the scope of liquid, steam and gas medium, as well as solid surface temperature measurement.
The working principle of
The thermocouple electrode is composed of two different conductor material.When measuring the temperature difference is with the reference, the can produce thermoelectric power, the instrument will show thermoelectric potential corresponding temperature value.
Thermal resistance is to use the resistance and temperature had a certain function of relationship theory.When the measured medium temperature change, its resistance value also along with the change, the instrument will show resistance corresponding temperature value.
The main technical parameters
Product standards
IEC1515
IEC584
IEC751
JB/T5518-91
JB/T5582-91
Nominal pressure
Generally refers to the normal temperature, protecting tube can withstand static external pressure and not burst.Allows the working pressure is not only related to protecting tube material, diameter, wall thickness, and its structural forms, installation method and the measured medium velocity, species.
Measuring range and tolerance
thermocouple |
Type no. | Degree, | Tolerance level | |||
Ⅰ | Ⅱ | ||||
Tolerance values | ℃ temperature range | Tolerance values | ℃ temperature range | ||
WRN | K | Plus or minus1.5 ℃ | + 375-40 - | Plus or minus2.5 ℃ | + 333-40 - |
Plus or minus0.004 ltl | 375-375. | Plus or minus0.0075 ltl | 333-333. | ||
WRE | E | Plus or minus1.5 ℃ | + 375-40 - | Plus or minus2.5 ℃ | + 333-40 - |
Plus or minus0.004 ltl | 375-375. | Plus or minus0.0075 ltl | 333-333. | ||
WRP | S | Plus or minus1 ℃ | 0-1100. | Plus or minus2.5 ℃ | 0-600. |
Plus or minus"1+0.003(t-1100)」 | 1100-1100. | Plus or minus0.0025 ltl | 600-600. | ||
WRQ | R | Plus or minus1 ℃ | 0-1100. | Plus or minus2.5 ℃ | 0-1100. |
Plus or minus"1+0.003(t-1100)」 | 1100-1100. | Plus or minus0.0025 ltl | 1100-1100. | ||
WRR | B | — | — | — | — |
— | — | Plus or minus0.0025 ltl | 600-600. |
The thermal resistance
model | Degree, | ℃ temperature range | Precision grade | Allowable deviation |
WZP | Pt100 | - 200 - + 500 | A | Plus or minus(0.15+0.002)ltl |
B | Plus or minus(0.30+0.005)ltl | |||
WZC | Cu50 Cu100 | + 100-50 - | -- | Plus or minus(0.30+0.005)ltl |