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Thermax TMC Hallcrest Temperature Control

Description

TMC Hallcrest Temperature Control was established in 1969 and in that time we have grown and developed many new products and a position in the market as leaders in the field of colour change thermometry. Working with customers to identify needs and provide innovative solutions to specific needs, requires an understanding of not only the potential of our products, but their capability for each individual clients potential application.

About TMC Hallcrest Temperature Control

Our professional, technical expertise recognises the need to understand each customers’ individual production and operational techniques. Our fast, friendly, and helpful service means that our customers have easy access to relevant temperature measurement information and expertise, as well as speedy delivery and effective after-sales support. As World leading temperature measurement specialists, TMC can provide you with the solution to your temperature measurement problems

Technology of Irreversible Temperature Labels

TMC Hallcrest manufactures quick response, phase change temperature indicating labels that are easy to use under their brand name THERMAX. We purify organic chemicals with specific melt points to provide a highly accurate irreversible indication of maximum temperatures achieved by a simple colour change.

Offering precise readings, these irreversible temperature labels combine:

  • Defined melting points – giving high accuracy with the ability for you to specify exact requirements based on your needs
  • Individually Coated – allowing you to design your label giving you accurate and clearly defined results
  • Permanent Colour Change – allowing you to keep records for quality control and due diligence or records abuse of your products in the field.

Product Information

Temperature range

  • 29 to 290°C with over 75 specific temperatures available as standard.

Colour change

  • THERMAX Strips containing temperatures only up to 210°C – Silver/White to Black
  • THERMAX Strips containing temperatures of 212°C and above – Orange to Black

Film

  • THERMAX Strips containing temperatures only up to 160°C – Polyester
  • THERMAX Strips containing temperatures between 165 and 210°C – Polyethylene Naphthalate
  • THERMAX Strips containing temperatures of 212°C and above – Polyimide

Adhesive

  • THERMAX Strips containing temperatures only up to 160°C – Modified acrylic adhesive with polyester carrier
  • THERMAX Strips containing temperatures of 165°C and above – Pure acrylic adhesive with tissue carrier

Available

  • Strips can be supplied in packs or rolls – Convenient and simple to apply
  • Custom designs – Offering a bespoke solution
  • Custom sizes, shapes and materials – Designed to suite a wide range of applications

Applications

  • Process control – Giving you consistent results
  • Test & measurement – Delivering accurate results
  • Quality control – An affordable solution to safeguard quality
  • Safety Indicators – Protecting people, equipment, machinery and products
  • Warranty – Removing the risk of false claims
  • Maintenance – Reducing downtime and maximising performance

How Temperature Indicating Paints Works

TMC temperature indicating paints comprise a range of different coatings which are based on mostly inorganic colour changing pigments dispersed in solvent based solutions of acrylic and / or silicon based polymers. They are useful in determining heat patterns and showing temperature distribution by showing changes in colour.

They are widely used in industrial applications with single colour change paints typically used to show heat exposure events. Used as a warning coating on insulated vessels they can be used to indicate where thermal linings breakdown and surface temperatures rise. In the motor industry they can show when components have exceeded certain temperature limits.

Paints with multiple colour changes are commonly used in the aerospace industry for thermal mapping of jet engine components with paints suited for combustors and turbine work at temperatures in excess of 1000ºC.

The different paints are based on a range of different chemicals and many of these are based on heavy metals such as lead, cobalt and chromates. This means some are restricted to specialist scientific testing and research work. Safety Data Sheets provide identification of any hazardous components.

Temperature exposure causes chemical changes such as oxidation, crystal structure changes with loss of associated molecules such as water or ammonia, depending on type. The colour changes and the temperature they occur at are mostly dependent on the length of heating time so some knowledge of the time and temperature relationship of the paints is required for a more accurate understanding of temperatures that may have been experienced.

The colour changes are chemical reactions which are accelerated by increasing temperature so a paint that takes several hours to change at one temperature can show the same colour change much sooner if the temperature is increased. When a colour change temperature is quoted for thermal paint it needs to be qualified by a statement on the length of time required at this temperature for these reasons.

By measuring the temperatures and time relationship it is possible to produce a calibration curve of paints. Below is a typical curve. Most paints show this same characteristic curve. Calibrations have been carried out over the years using various methods including immersion of coupons into specialist furnaces and resistance generating test plates (known a s butterflies) which generate thermal gradients.

Thermal paints are typically applied by spraying with a dry film of around 18 – 28u typically required. Adhesion to metal surfaces requires thorough preparation with abrasive cleaning, such as grit blasting, and grease removal with suitable solvents. In thermal mapping in the aerospace industry applying the thermal paint directly to metal is preferred, especially in high temperature applications.

The Products of TMC Hallcrest Temperature Control

Irreversible Labels

A range of Irreversible temperature indicators available over a range of -17°C to +1270°C (+1°F to +2318°F) which are used in numerous applications such as Food, Medical, Automotive, Aerospace and Engineering.

Thermax

Thermax is a range of Labels and Strips that change colour permanently, indicating the maximum temperature achieved. Available with a wide range of temperatures and sizes. These irreversible labels can be used in numerous applications such as Food, Medical, Automotive, Aerospace and Engineering. Inexpensive and Easy to Use, Immediate Response, Permanent Record of Highest Temperature Reached, Oil, Water and Steam Resistant.

TDI

Developed to withstand extreme conditions of industrial dishwashers, TDI Labels form part of HACCP procedures, giving a permanent record of sterilisation temperatures achieved. These water resistant, irreversible labels are easy to use and accurate to +/- 1C. Giving a permanent record of thermal disinfection temperatures achieved, they clearly indicate when correct temperatures are not being achieved for evidence of health and safety due diligence.

Single Temperature Indicators are designed for regular and daily checks. Multi-Level temperature indicators are designed for a more in-depth check to prove what temperature level has been achieved.

Textiles Strip

A range of temperature test strips specifically developed for the Textile industry that will record permanently, the highest bracketed temperature reached by the label. Highly accurate heat indicators designed for use within the textile bonding process. The individual temperature settings will permanently change colour to indicate the temperature achieved.

Perfect for temperature testing when using a fusing machine, confirming the temperature at the bonding site and ensuring that garments finished or pressed when exposed to temperature do not overheat.

Low Temp

Our range of low temperature indicators provide a cost effective solution to identify temperature control issues during the transportation and storage of goods.

Reversible Labels

Digitemp and EasyRead is our extensive range of Reversible temperature labels available over a range of 0°C to 100°C which are used in numerous applications such as Food, Medical, Babycare, Promotional and Education. In Reversible Labels there are:

Liquid Crystal

Conventional Liquid Crystal range that offers and instant, accurate and easy to read indication of temperature, -30 to 100C.

REVERSIBLE TEMPERATURE MEASUREMENT

The labels are comprised of a series of liquid crystal formulations called events. Each event is precisely calibrated to show a green colour at the designated temperature, changing colour in sequence from tan to green to blue as the temperature increases. As a result, only one event will be green at any one time, which indicates the temperature.

PRODUCT RANGE

Many applications are well established and include products sold into the following areas: Food safety Fridge Thermometers,  Forehead/Fever Thermometers,  Aquarium Thermometers, Baby and Nursery Temperature Safety Products. Promotional – Advertising specialities. Medical and Laboratory – Skin temperature indicators and colour change labels for medical equipment. Industrial/Research and Testing – Colour Change Printing Inks, coatings and pigments, hot and cold warning labels.

Single Colour

NEW Easy Read Single Colour Technology. A new generation of UK manufactured temperature monitors, with unique continuous moving scale.

COLOUR CHANGE THERMOMETRY

A World first in reversible temperature sensitive materials that change colour at designated temperatures. Non-toxic, accurate, self-adhesive Easy Read Temperature Indicators.

CUSTOM PRODUCTS

All of these new Easy Read products can be custom made to any specification with temperatures between 0 and 100C

Pigments, Inks & Plastics

Pigments, Inks & Plastics

A range of Special Effect Pigments, Inks and Plastics. Ink is thermostar temperature sensitive inks there are Hydrochromic, Photochromic, Thermochromic. Pigments is ChromaZone Powder and Dispersion which have Dispersion and Powder. And for Plastics is Thermochromic Pigment for Plastics and there is Chromazone Thermobatch.

Chromazone

Chromazone is a range of temperature sensitive Thermochromic Pigments and Inks that change from colour to colourless as the temperature rises. The colour reappears when the temperature is reduced again. Colour changing effects can be varied infinitely by applying Chromazone Pigments over coloured inks and coatings or blending with other transparent colorants.

Special Effects

The Thermochromic effect achieved through the use of Chromazone pigments, inks and coatings enhances the value to an endless variety of products and is a highly attractive eye-catcher. It is a highly effective route to product promotion and differentiation. As well as being a marketing tool, Chromazone can be used for a wide variety of functional applications in the areas of security/safety and anti-counterfeiting. The uses of Chromazone are limited only by the imagination.

Thermax Paints

Thermodynamic conditions in aero engines and turbines can be mapped with Thermax Single and Multi-Change Paints.

Colotemp Crayons

An established and reliable range of colour change Irreversible crayons that change colour when applied to pre-heated surfaces Ideal for production processes in Aluminium, Zinc, Textiles, Plastics, Glass, Enamelling and many more.

Source : tmchallcrest.com

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