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SS316 Sheath & Aluminium Head

Thermocouple

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SS316 Sheath & Aluminium Head

Thermocouple

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A Thermocouple with a SS316 Sheath and Aluminium Head is a highly durable and widely used industrial temperature sensor assembly designed for processes requiring superior corrosion resistance.
It is an upgrade from the common SS304 sheath, making it suitable for harsher chemical environments.
1. Thermocouple Element
• Function: This is the core element (e.g., Type K, J, or T wires) that measures heat energy and converts it into a small, measurable millivolt ($\text{mV}$) signal.
2. SS316 Sheath
• Material: Stainless Steel Grade 316 (SS316). This is a premium grade of stainless-steel containing molybdenum, which is the key difference from SS304.
• Function: The sheath acts as a protective barrier for the sensitive internal wiring and insulation.
• Key Advantage: The addition of molybdenum significantly enhances its resistance to corrosion, particularly against pitting corrosion and corrosion caused by chlorides, acids, and brine solutions.
• Applications: It is preferred in the marine, food and beverage, pharmaceutical, and chemical industries where the sensor may be exposed to aggressive cleaning agents, saltwater, or mild acids.
3. Aluminium Head
• Design: This is the connection head (or terminal head) at the non-measuring end of the sensor. It is an enclosed housing.

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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)

  • Marine & Hydropower
  • Automotive & Aerospace Test Ring
  • Axle / Shaft / Valve Actuator Testing

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

  • Protection: It provides a safe, environmentally sealed space (usually rated IP rated) to protect the internal terminal block and the cold junction from dust, moisture, and mechanical damage.
  • Accessibility: It offers a convenient, accessible point for technicians to wire the sensor to a transmitter or control panel.
  • Material: Aluminium is chosen for its light weight, good corrosion resistance (due to its self-passivating oxide layer), and excellent heat dissipation properties. In summary, the use of the SS316 Sheath defines this thermocouple assembly as a heavy-duty, corrosion-resistant sensor, suitable for challenging environments where standard stainless steel SS304 would quickly fail.

Industries

Batching & Mixing Plant
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Silo Weighing
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Hopper Weighing
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FAQs

frequently asked questions

01. What is a temperature sensor and what does it do?

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.

02. What are the three most common types of temperature sensors?

The three most widely used types of temperature sensors are:

  • > RTD (Resistance Temperature Detector): Measures temperature by correlating the resistance of an element (usually platinum, e.g., Pt100) with temperature. RTDs offer high accuracy and stability over a broad range.
  • > Thermistor: Measures temperature using a ceramic or polymer resistor whose resistance changes significantly and rapidly with temperature. They are highly sensitive and typically used for lower temperature ranges.
  • > Thermocouple: Measures temperature using the voltage generated at the junction of two dissimilar metals (the Seebeck effect). They are rugged, self-powered, and used for measuring extremely high temperatures.
03. Why does temperature measurement need to be converted to an electrical signal?

The temperature reading needs to be converted into an electrical signal (like a voltage or current) so it can be:

  • > Read Digitally: Processed, displayed, and recorded by a digital controller, computer, or data logger.
  • > Transmitted: Sent over long distances without loss of accuracy to a centralized control system (e.g., using a 4-20mA transmitter).
  • > Used for Control: Applied as feedback in a control loop (e.g., to turn a heater on or off) to maintain a specific process temperature.
04. What are some common applications for temperature sensors?

Temperature sensing is foundational to industrial control and everyday technology:

  • > Industrial Process Control: Monitoring fluid and gas temperatures in chemical reactors, pipelines, and boilers to ensure safety and quality.
  • > HVAC Systems: Regulating room temperature, monitoring air duct temperature, and controlling heating/cooling cycles.
  • > Food Processing: Ensuring proper cooking, storage, and sterilization temperatures for compliance and safety.
  • > Engine Monitoring: Measuring coolant and exhaust gas temperatures in vehicles and machinery.
05. What is the difference between contact and non-contact temperature measurement?
  • > Contact Sensors: These sensors (like RTDs and Thermocouples) must be physically touching the object or medium they are measuring. They measure the temperature of the sensor tip itself, which then equilibrates with the target medium.
  • > Non-Contact Sensors: These sensors (like infrared thermometers or pyrometers) measure temperature by detecting the thermal radiation (infrared energy) emitted by the object’s surface. They are ideal for measuring objects that are moving, extremely hot, or dangerous to touch.