The hot rod red painted flames on the hood of the Jim Dunn Racing Funny Car during upcoming NHRA national events in Bristol, Tennessee and Norwalk, Ohio represent the team’s sponsor, Blaze Exhaust Probes. A key element used in drag racing to measure exhaust temperatures, Blaze Technical Services helps the Dunn’s and many other teams…
Thermocouples are transducers that convert temperature directly into voltage. They are active transducers simply made by joining two different metals. It produces a voltage when the temperature in the joint changes. Types of Thermocouples: There are many different types of thermocouples, made of different types of cables and that have very different properties. The five standard…
What is a Thermocouple? A thermocouple consists of two dissimilar metals, joined together at one end, which produce a small voltage when heated (or cooled). This voltage is measured and used to determine the temperature of the heated metals. The voltage for any one temperature is unique to the combination of metals used. Are There…
Equipments needed Transmitter 24VDC supply Decade box(resistance) Multimeter Theory RTD has no polarity There are different kinds of RTD (2 wire,3 wire,4 wire) Output of RTD will be change in resistance due to change in temperature. Commonly used RTD materials are nickel, platinum, and copper. Formula needed for calibration: Procedure for calibrating RTD transmitter…
‘The world is getting warmer day by day.’ This sentence has started to crop up every now and then in our day to day lives. But seldom do we wonder what it means. What is warmer? How warm is warm? Is it hotter than hot, or just hotter than cold? To our human senses, temperature…
Resistance Temperature Detectors (RTD) are temperature measuring transducers used in industrial applications. RTDs are simple in construction with higher accuracy and repeatability and which are used in the applications below 600°C. Principle: As the name suggests the RTDs are temperature sensitive resistors. The resistance temperature detector (RTD) measures the electrical conductivity as it varies with temperature. The electrical…
Temperature control in the food industry is an essential input for a variety of reasons: Optimal food storage in freezers, fridges or near ambient control Cooking control for food processing Preservation process i.e. Pasteurisation Energy cost control Food hygiene through bacterial control Storage during distribution Consistency is the secret in the recipe and the process…
Probe thermometers aren’t perfect. One of the first strikes against them comes from the manufacturers themselves, who promote the “set it and forget it” approach—suggesting that once you set the target doneness temperature, you can walk away until the alarm sounds. In our experience, there’s no substitute for checking on roasting meats visually, tactilely, and—as they…
Working Principle The working principle of thermocouple is based on three effects, discovered by Seebeck, Peltier and Thomson. They are as follows: 1) Seebeck effect: The Seebeck effect states that when two different or unlike metals are joined together at two junctions, an electromotive force (emf) is generated at the two junctions. The amount of emf…
Thermistor is a solid state temperature sensing device that acts a bit like an electrical resistor but is temperature sensitive. Thermistors can be used to produce an analogue output voltage with variations in ambient temperature and as such can be referred to as a transducer. This is because it creates a change in its electrical properties…