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Corrosion resistant thermistor
In industrial automation systems,thermocouple、thermal resistanceAs a temperaturesensorIt has been widely used, but in some special occasions, such as chemical plants, smelters, thermal power plants, etc., ordinary thermocouples and thermal resistors are extremely damaged. Therefore, special materials and structures of thermocouples and thermistors must be used in these situations.
There are currently two types of wear-resistant coatings, one with a hardness of HRC58-62 and a temperature range of 0-600 ℃; Corrosion resistant coatings have good anti-corrosion properties, except for molten metals such as lithium, potassium, sodium, hydrofluoric acid, chlorine trifluoride, and oxygen trifluoridevelocity of flowExcept for liquid nitrogen, it can resist almost all other chemical media and can be used for a long time in the range of 0-250 ℃. If the fixed thread needs to be made into a corrosion-resistant structure, the thread cannot bepressureWorking in an environment.
Titanium alloy pipes can withstand corrosion from seawater, various chlorides and hypochlorites, wet chlorine, and oxidizing acids (including fuming nitric acid), but are not resistant to relatively pure reducing acids (sulfuric acid, hydrochloric acid). The temperature range of titanium alloy pipes is 500 ℃ or above
Specification
·Corrosion resistant type
name |
Graduation |
Temperature measurement range (℃) |
Allowable deviation △ t (℃) |
Nickel chromium nickel silicon thermocouple |
K |
Please refer to the specification table for details |
± 2.5 ℃ or ±0.0075∣t∣ |
chromel-constantan thermocouple |
E |
·Wear resistant type
name |
Graduation |
Temperature measurement range (℃) |
Allowable deviation △ t (℃) |
Nickel chromium nickel silicon thermocouple |
K |
0~600 |
± 2.5 ℃ or ±0.0075∣t∣ |
chromel-constantan thermocouple |
E |
All other technical indicators comply with JB/T9238-1999 Technical Conditions for Industrial Thermocouples and JB/T8622-1997 Technical Conditions.
Types and specifications
Corrosion resistant thermocouple | |||||
model |
Graduation |
coating |
Temperature measurement range ℃ |
Diameter of protective tube d |
specifications |
|
WRN-130-F WRN-230-F WRN-330-F WRN-430-F |
K |
F |
0~250 |
16+2 |
300×150 350×200 400×250 450×300 550×400 650×500 900×750 1150×1000 1650×1500 |
|
WRN2-130-F WRN2-230-F WRN2-330-F WRN2-430-F |
TC |
0~250 |
|||
|
WRE-130-F WRE-230-F WRE-330-F WRE-430-F |
E |
||||
|
WRE2-130-F WRE2-230-F WRE2-330-F WRE2-430-F |
T |
0~500 |
16 |
||
Corrosion resistant thermocouple | |||||
model |
Graduation |
coating |
Temperature measurement range ℃ |
Diameter of protective tube d |
specifications |
|
WRN-130(*) WRN-230(*) WRN-330(*) WRN-430(*) |
K |
Ni60 |
0~600 |
16+1.5 |
300×150 350×200 400×250 450×300 550×400 650×500 900×750 1150×1000 1650×1500 2150×2000 |
|
WRNN2-130(*) WRNN2-230(*) WRNN2-330(*) WRNN2-430(*) | |||||
|
WREN-130 WREN-230 WREN-330 WREN-430 |
E |
||||
|
WREN2-130 WREN2-230 WREN2-330 WREN2-430 | |||||
WRNN-530(*) |
K |
500×500 750×750 |
|||
WRNN2-530(*) | |||||
WREN-530 |
E |
||||
WREN2-530 | |||||
WRNN-631(*) |
K |
d+1.5 |
225×75 250×100 300×150 350×200 400×250 |
||
WRNN2-631(*) | |||||
WREN-631 |
E |
||||
WREN2-631 | |||||
Note: Please refer to the table below for coating and temperature measurement range
Wear resistant thermocouple | ||
（*） |
coating |
Measurement range ℃ |
B |
WG1 |
0~800℃ |
C |
WG2 |
0~1000℃ |
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