Description
Introduction
A thermocouple is a simple, robust and cost-effective temperature sensor used in a wide range of temperature measurement processes. It consists of two dissimilar metal wires, joined at one end. When properly configured, thermocouples can provide measurements over a wide range of temperatures.
|
Type |
Temperature Range (°C) (Short Term) |
Sensitivity (µV/°C) |
Conductor Alloys |
|
K |
−180 to +1300 |
41 |
Chromel (90% Ni, 10% Cr) |
|
Alumel (95% Ni, 2% Mn, 2% Al, and 1% Si) |
|||
|
J |
−180 to +800 |
55 |
100% Fe |
|
Constantan (55% Cu, 45% Ni) |
|||
|
N |
−270 to +1300 |
39 |
Nicrosil (84.1% Ni, 14.4% Cr, 1.4% Si, 0.1% Mg) |
|
Nisil (95.6% Ni, 4.4% Si) |
|||
|
R |
−50 to +1700 |
10 |
87% Pt, 13% Rh |
|
100% Pt |
|||
|
S |
−50 to +1750 |
10 |
90% Pt, 10% Rh |
|
100% Pt |
|||
|
B |
0 to +1820 |
10 |
70% Pt, 30% Rh |
|
94% Pt, 6% Rh |
|||
|
T |
−250 to +400 |
43 |
100% Cu |
|
Constantan |
|||
|
E |
−40 to +900 |
68 |
Chromel |
|
Constantan |
Application
Thermocouples are suitable for measuring over a large temperature range, from −270 up to 3000 °C (for a short time, in inert atmosphere). Applications include temperature measurement for kilns, gas turbine exhaust, diesel engines, other industrial processes and fog machines.
They are less suitable for applications where smaller temperature differences need to be measured with high accuracy, for example the range 0–100 °C with 0.1 °C accuracy. For such applications thermistors, silicon band-gap temperature sensors and resistance thermometers are more suitable。
How to choose a thermocouple?
1. Determine the application where the thermocouple will be used
2. Analyze the temperature ranges the thermocouple will be exposed to
3. Consider any chemical resistance needed for the thermocouple or sheath material
4. Evaluate the need of abrasion and vibration resistance
5. List any installation requirements
Order Guider
1.Type
2.Probe diameter
3.Probe length
4.Working temperature
5.Lead Wire length
6.Special requirement
7.Quantity
8. Terminal option
Please kindly note that we could do any customized type for you
Product Paramenters
Company Profile
Guangzhou Hi-Heating Industry Solution Co., Ltd.
Hi-Heating is the supplier specializing in all kinds of heater elements, such as cartridge heater, band heater, coil heater, titanium tube, immersion heater, magnesium rod, heating wire, PT100, thermocouple and the accessories, almost all industry relative products.
Our products applications: injection molding machine, granulator, extruder, drawing machine, blown film machine, another plastic machinery and other system need to use electric heat.
We have a professional team to offer quality products, reliable delivery, competitive price and good after-sales service.Our mission is we are striving to offer our customers the technology support and satisfied goods and after-sales service.
