A Thermocouple with a SS304 Sheath and Aluminium Head is a common, robust industrial temperature sensor assembly designed for general-purpose applications where moderate temperatures, corrosion resistance, and good mechanical protection are required.
Here is a breakdown of its key components and their functions:
1. Thermocouple Element
• Function: The core of the sensor that measures temperature. It consists of two dissimilar metal wires (like Type K, J, or T) welded together at the tip (the measuring junction).
• Signal: It generates a minute voltage signal (in millivolts) proportional to the temperature difference between the measuring junction and the connection end.
2. SS304 Sheath
• Material: Stainless Steel Grade 304 (SS304) is the most widely used and cost-effective grade of stainless steel.
• Function: The sheath is a metal tube that protects the delicate thermocouple wires and insulation from the process environment (e.g., pressure, abrasion, moisture, mild chemicals).
• Characteristics:
• It offers excellent corrosion resistance against a variety of mild chemicals and atmospheric conditions.
• It provides good mechanical strength and can withstand moderate vibrations.
• It is suitable for use up to approximately 900°C in oxidizing environments, though the internal thermocouple element’s limit might be lower.
3. Aluminium Head
• Design: This is the connection head (or terminal head) located at the end of the thermocouple opposite the measuring tip. It is typically a dust-proof and splash-proof enclosure.
Product Type
Single Point Aluminium Load Cell
Usage
Table top scales, Counting and postal scales, Check weighers.
Material
Aluminium
Output
Analog Sensor
Theory
Resistance Sensor
Compensated Temperature
10 To 60 Celsius (oC)
Rated capacity (NM)
5, 10
Excitation Voltage
10 V DC – Maximum 15 V DC
Full Scale Output
2.0 mV / V
Non – Linearity
<± 0. 1 % FSO (Full scale Output)
Hysteresis
<± 0.1% FSO
Non-Repeatability
<± 0.1 % FS0
Creep error (30 minutes)
<± 0.3% FSO
Zero Output
± 1.0 % FSO
Input Resistance
392 ± 10 Ohms
Output Resistance
392 ± 10 Ohms
Insulation Resistance
>1000 Mega Ohms
Safe Overload
150 % of Rated Capacity
Ultimate Overload
250 % of Rated Capacity
Temperature
Compensated Range
10 to 60°C
Temperature Effect at Full Load
<0.05 % FSO/° C
Temperature Effect on
Zero
<0.05 % FSO/° C
Environment Protection
IP 65
Finish & Construction
Stain Less Steel 17-4 PH
Rotational Angular Deflection
< 0.2 at FSO
A temperature sensor is a device that gathers information about the thermal energy (heat) of a medium and converts that information into a readable electrical signal. Essentially, it measures heat and outputs a corresponding signal (voltage, current, or resistance) that can be interpreted by a control system or thermometer.
The three most widely used types of temperature sensors are:
The temperature reading needs to be converted into an electrical signal (like a voltage or current) so it can be:
Temperature sensing is foundational to industrial control and everyday technology:
