Flexible Compression Spring Temperature Sensor
J-Type Thermocouple. The J-type thermocouple is the most commonly used, inexpensive electrical device that This type of thermocouple is magnetic, typically made of nickel, with a property to change its output when the material reaches its Curie point at around 365°F.
- SFM
- China
- 2-7 day
- Information
SHEATH MATERIAL
SUS304
SUS316 - Excellent pitting corrosion resistance & crevice corrosion resistance, widely used in the chemical industry.
Inconel600 - Heat & corrosion resistant steel with strong stress and corrosion resistance, widely used in various heating components and petrochemical industry.
MOUNTING & FIXING
A variety of mounting options including fixed or movable flange, fixed or movable thread, or without mounting fixing.
JUNCTION STYLES & DETAILS
Grounded
1. Good heat transfer from the outside to the thermocouple junction
2. Rapid response
3. No suitable in case with electrical noise
Ungrounded
1. Response time is slower than the grounded style
2. Long service life
3. Resistance to electrical noise
Exposed
1. Rapid response
2. Suitable to measure the temperature of gas
3. Poor mechanical strength in contact with other measuring structures
Thermocouple Types and Temperature Range
| ||||
Type | Wire Material | Temp. Range | Accuracy | |
+ | - | |||
K | Nickel-Chromium | Nickel-Alumel | -200~1000°C | +/- 2.2°C or +/- .75% |
J | Iron | Constantan | 0~600°C | +/- 2.2°C or +/- .75% |
T | Copper | Constantan | -200~300°C | +/- 1.0°C or +/- .75% |
E | Nickel-Chromium | Constantan | -200~700°C | +/- 1.7°C or +/- 0.5% |
N | Nicrosil | Nisil | -200~1200°C | +/- 2.2°C or +/- .75% |
R | Platinum Rhodium – 13% | Platinum | 0~1400°C | +/- 1.5°C or +/- .25% |
S | Platinum Rhodium – 10% | Platinum | 0~1400°C | +/- 1.5°C or +/- .25% |
B | Platinum Rhodium – 30% | Platinum Rhodium – 6% | 0~1500°C | +/- 0.5% |
Thermocouple Type | Extension Wire Type | Wire Material | Temp. Range (℃) | Tolerance (µV) | ||
+ | - | Class 1 | Class 2 | |||
K | KX | Nickel-chrome | Nickel-silicon | -25~200 | ±60 | ±100 |
KCA | Nickel-chrome | Nickel-silicon | 0~150 | - | ±100 | |
KCB | Iron | Copper-nickel | 0~150 | － | ±100 | |
KCC | Copper | Copper-nickel | 0~100 | － | ±100 | |
E | EX | Nickel-chrome | Copper-nickel | -25~200 | ±120 | ±200 |
J | JX | Iron | Copper-nickel | -25~200 | ±85 | ±140 |
T | TX | Copper | Copper-nickel | -25~100 | ±30 | ±60 |
N | NX | Nickel-chrome | Nickel-silicon | -25~200 | ±60 | ±100 |
NC | Copper-nickel | Copper-nickel | 0~150 | － | ±100 | |
R | RCA | Copper | Copper-nickel | 0~100 | － | ±30 |
RCB | Copper | Copper-nickel | 0~200 | － | ±60 | |
B | BC | Copper | Copper | 0~100 | － | － |
S | SCA | Copper | Copper-nickel | 0~100 | － | ±30 |
SCB | Copper | Copper-nickel | 0~200 | － | ±60 | |
Features | 1. Cost effective 2. Small in size 3. Robust 4. Wide range of operation 5. Accurate for large temperature changes 6. Fast response 7. Wide temperature capabilities |
How to choose | Please provide the following information: 1. What’s the application 2. Type of the thermocouple (K/J/T/E/N/R/S/B) 3. Diameter and length of probe 4. Installation requirements (thread or flange size) 5. Temperature range 6. Chemical resistance of the thermocouple or sheath material |
