Commonly used thermocouples can be divided into two categories: standard thermocouples and non-standard thermocouples. The standard thermocouple that is called refers to the thermocouple that the national standard specifies the relationship between the thermoelectric potential and the temperature, the allowable error, and the uniform standard index table. It has a display instrument that is compatible with it. Non-standardized thermocouples are not as good as standardized thermocouples in terms of use or order of magnitude. Generally, there is no uniform indexing table, which is mainly used for measurement in some special occasions. Standardized Thermocouples Since January 1, 1988, thermocouples and thermal resistors have all been produced in accordance with IEC international standards, and seven standardized thermocouples, S, B, E, K, R, J, and T, have been designated as China's unified design. Thermocouple. Commonly used thermocouple indexing numbers are S, B, K, E, T, J, etc. These are standardized thermocouples. Among them, the K type is a nickel-chromium-nickel silicon thermocouple, which is a cheap thermocouple capable of measuring higher temperatures. Since this alloy has good high temperature oxidation resistance, it can be applied to oxidizing or neutral media. It can measure high temperatures of 1000 degrees for a long time and 1200 degrees in the short term. It cannot be used in reducing media, otherwise it will corrode quickly, in this case it can only be used for measurements below 500 degrees. It is much cheaper than the S-type thermocouple, it has good repeatability, produces a large thermoelectric potential, and is therefore highly sensitive, and its linearity is very good. Although its measurement accuracy is slightly lower, it can fully meet the industrial temperature measurement requirements, so it is the most commonly used thermocouple in the industry. Common thermocouple indexing table Thermocouple indexing number Hot electrode material Operating temperature range (°C) positive electrode negative electrode S platinum rhodium alloy Platinum rhodium alloy (铑 content 10%) Pure platinum 0-1400 R platinum rhodium alloy Platinum rhodium alloy (铑 content 13%) Pure platinum 0-1400 B platinum rhodium alloy Platinum-rhodium alloy (铑 content 30%) Platinum rhodium alloy (铑 content 6%) 0-1400 K Nickel chrome Nickel silicon -200-+1000 T Pure copper Copper nickel -200-+300 J iron Copper nickel N Nickel chromium silicon Nickel silicon E Nickel chrome Copper nickel Dual Mining Power Supply 1800W Specifications:
Support graphics card :8
Color: Black
Size: 15 x 14 x 8.6cm
Rated power: 1800W
High Performance of Computing,10% Higher Than Same Level Motherboards.
Features:
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Item name: Dual Ethereum Mining Power Supply 1800W
Input Voltage: AC 180V~240V
Equipped Sodimm DDR3 Memory Slot,8*6PIN PCIE X16 Power Supply Socket,Significantly Improve Motherboard Performance.
The Voltage Stabilizing Capacitor Can Provide A Stable Voltage for Your Power Supply Equipment.
It Can Ensure Quiet Performance, Low Power Consumption, Less Heat Generation, Energy Saving and Safe Use.
The power supply is 1800W conversion efficiency of 90+
Support graphics card 8, video card 6+2pin 16
Gold medal stability is strong
Gifts: power line 1:1 distribution
Voltage : 180v-220v 50Hz 10A
DC OUTPUT: 12V---150A MAX
POWER IN : 2000W MAX
Specification:
Name:Mine Chassis Power Supply
voltage : 180v-264v
Specifications
Color:black
PFC Type:active PFC
Power: max power 2000W
Appropriate Type:Ethereum Mining Power Supply 1800W