Air | Gas | Mould
Anti Condensation Heater
Air Immersion Heater
Silicon Carbide (SIC) Heater
Ceramic Bobbin Heater
Ceramic Fiber Heater
Flexible Silicone Rubber Heater
Air Circulation Heater
Hot Air Blower
Ceramic Infrared Heater
Quartz Infrared Heater
Ceramic Band Heater
Mineral Insulation Heater
Halogen Infrared Heater
Black Infrapara Heater
Infrared Silica Quartz Heater
Inline Circulation Heater
Explosion Proof Heater
Specialty Heating + Controls
Control Panel & System Solutions
Industrial Hot Water Calorifier
Industrial Hot Water System
Electric Heater Steam Boiler
Oil Flushing Skids
Thermal Fluid Analysis
Heat Tape/Heated Sample Lines
Flexible Ceramic Heating Pads
Explosion Proof Air Heater
Explosion Proof Duct Heater
Explosion Proof Immersion Heater
Explosion Proof Line Heater
Explosion Proof Process Heater
Oven | Furnace
Platinium Curve Rigid Averaging
HVAC Temperature Sensor
Wireless Temperature Transmitter
Green Mark Precision Temperature Sensor
Temperature | Humidity | Dew Point | Gas
Handheld | Infrared | Thermal
Dehumidifiers | Humidifiers | Air Purifier
RTD | PT100 Sensors
Pressure Transducers | Transmitters
Differential Pressure Transmitter
Hydrostatic Level Probe
Level Switches & Transmitters
By-pass Level Transmitter
Capacitance Level Switch
Magnetic Level Sensor
Ultrasonic Level Sensor
Vibrating Level Switch
Air | Gas | Liquid Flow
Air Flow/Air Velocity Meter
Variable Area Flow Meter
Electromagnetic Flow Meters
Sanitary Magnetic Flow Meter
Positive Displacement Flow Meter
Insertion Magnetic Flow Meter
Liquid Turbine Flow Meter
Coriolis Mass Flow Meter
Ultrasonic Flow Meter
Vortex Flow Meter
Gas Roots Flow Meter
Gas Turbine Flow Meter
Oval Gear Flow Meter
Fluorescence Dissolved Oxygen
SSR & Power Regulator
Signal Conditioners & Isolators
Communication Products & Converters
- Temperature Controller
- Timer / Counter
- Terminal Block / Buzzer
- Signal Light
Frequnecy Inverter | Drive
Heat Resistant Cable
Braided Screen Cable
Low Voltage Cable
LK Instrumentation Cable
Air-Operated Double Diaphragm Pumps
Control and Measuring Instruments
Motor Driven Pumps
Solenoid Dosing Pumps
Mobile Safety / Ex-Proof Smartphone
Products for Automotive Industry
Wireless Sensor, Transmitters, Receivers, Meter & Controllers
Dpstar Group provides top thermocouple solutions with high-quality assurance. We specialize in the design and manufacture of high-quality standard types of thermowells for various temperature sensing instruments according to our customer’s specifications. Our experienced engineer will help you to select the right product for any temperature application and offer advice on best installation practices.
A thermowell is a pressure-tight receptacle designed to accept a temperature sensing element and provide a means to insert that element into a vessel or pipe. The American Society for Testing and Materials (ASTM) has defined the term thermowell as a closed-end reentrant tube designed for the insertion of a temperature-sensing element and provided with means for a pressure-tight attachment to a vessel.
A thermowell acts as a barrier between a process medium and the sensing element of a temperature measuring device. It protects against corrosive process media, as well as media contained under pressure or flowing at a high velocity. A thermowell also allows the sensing element to be removed from the application while maintaining a closed system.
If the measurement is not critical either to the safety of the plant or to the efficiency of the production, and if the process fluid is not particularly aggressive or dangerous, it may be possible to insert stainless steel, sheathed, industrial thermometer into the plant pipeline through a suitable compression fitting. Obviously, the thermometer could not be removed while the plant is running, and should a problem occur with the measurement, maintenance will be delayed until the process can be stopped and the line drained and made safe.
Bore Diameter (B): This is the inside diameter of the Thermowell.
Bore Depth (S): Total length of the bore.
Insertion length (U): Thermowell immersion lengths are often called the “U” length which is the measurement of the Thermowell from the bottom of the process connection to the top portion of the Thermowell.
Process Connections: This is the manner in which a Thermowell is inserted and connected into a process referring to the attachment of the element. The most popular are threaded, socket weld, and flanged connections.
Shank Construction: This is the immersion portion (shank) of the construction. The majority fall under three categories: straight, step, or tapered.
Lagging Extension Length (T): The lagging extension commonly referred to as the “T” length is located on the cold side of the process connection and is usually an extension of the hex length.
Base diameter Dimension (Q): This is the outside dimension of the Thermowell shank and is the densest part because the outside surface area is exposed to the hazardous materials of the process.
Tip Thickness (E): The thickness of the bottom portion of thermowell.
Tip Diameter (V): Thermowell end Diameter.
Thermowells are commonly classified according to their connection to a process. The most common types of thermowells are (1) threaded, (2) socket weld, (3) weld-in, and (4) flanged.
As the names imply, a threaded thermowell is screwed into the process either directly into the wall of a tapped pipe or into a thermowell threadolet. A socket weld thermowell is typically welded into a weldolet socket, but the thermowell may be welded directly into the pipe wall. A weld in thermowell is welded directly into the process vessel or piping. A flanged thermowell has a flange collar which is attached to a mating flange on a pipe nozzle.
Thermowells find applications in many industrial sectors including petrochemical, food processing, refining, cosmetics, Chemicals, Power, pharmaceutical, and other process industries. The thermowells are designed to protect the equipment from different external forces and disturbances such as pressure, abrasion, vibration, and corrosion, which can be caused by the process medium.
A properly selected thermowell will protect the temperature instrument from damage resulting from these process variables. Additionally, a thermowell enables the removal of the temperature instrument for replacement, repair, or testing without affecting the processing system.
There are no reviews yet.
Your email address will not be published. Required fields are marked *
Your review *
Save my name, email, and website in this browser for the next time I comment.
Heating & Thermal
Thermocouple | Temperature Sensor
Instrumentation | Process
Factory Automation & Control
Variable Speed Drive
Wires & Cable
Pumps & Fluid Solutions
Test Instruments & Others
Wireless Sensors & IOT
Your Name (required)
Your Email (required)
© 2020 All rights reserved. Dpstar Group
Your Name (required)
Your Company Name (required)
Your Email (required)
Your Contact No
From where you know about us
Google SearchPaid SearchSocial MediaLinkedinFacebookEmail MarketingReferral