Tel: 0086 311 8307 6260
Fax: 0086 311 8307 6260
Phone: 0086 150 2817 6443
Email: jojo@sznickelalloy.com
[Global Office information......]
thermocouple stranded twisted wire type K NiCr NiAl
Thermocouple temperature range and tolerance
| Type | Standard | Operating temperature range (°C) | Tolerance(°C) | |||
| Long term | Short term | Grade | Temperature range | Tolerance | ||
| Type K | GB/T2614 K | 1200 | 1300 | I | -40~1100 | ±1.5°C/±0.4%t |
| II | -40~1300 | ±2.5°C/±0.75%t | ||||
| Type N | GB/T17615 N | 1200 | 1300 | I | -40~1100 | ±1.5°C/±0.4%t |
| II | -40~1300 | ±2.5°C/±0.75%t | ||||
| Type E | GB/T4993 E | 750 | 900 | I | -40~800 | ±1.5°C/±0.4%t |
| II | -40~900 | ±2.5°C/±0.75%t | ||||
| Type J | GB/T4994 J | 600 | 750 | I | 0~750 | ±1.5°C/±0.4%t |
| II | ±2.5°C/±0.75%t | |||||
| Type T | GB/T2903 T | 300 | 350 | I | -40~350 | ±0.5°C/±0.4%t |
| II | ±1°C/±0.75%t | |||||
| III | -200~40 | ±1°C/±1.5%t |
||||
MAIN CHARACTERISTICS OF WISDOM THERMOCOUPLE ALLOYS
TYPE J (Iron vs Constantan) is used in vacuum, oxidizing, inert or reducing atmospheres. Iron element oxidizes rapidly at temperatures exceeding 538'C, and therefore heavier gauge wire is recommended for longer life at these temperatures.
TYPE K (CHROMEL vs ALUMEL ) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.
TYPE T (Copper vs Constantan) is used or service in oxidizing, inert or reducing atmospheres or in vacuum. It is highly resistant to corrosion from atmospheric moisture and condensation and exhibits high stability at low temperatures. It is the only type with limits of error guaranteed for cryogenic temperatures.
TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizingatmospheres. Produces the highest EMF per degree o any standardized thermocouple.
Type N thermocouple (Ni Cr Si-Ni Si Mg) is the latest base metal thermocouple, developed to improve the drawbacks that type K thermocouple has. The main chemical composition of positive leg Nicrosil(NP) is Ni: Cr: Si≈84.4: 14.2: 1.4; negative leg Nisil (NN) is Ni: Si: Mg≈95.5: 4.4: 0.1. Type N thermocouple also be used in the similar atmospheres that type K works, and the operating temperature range is -200~1300 °C.
English
简体中文