What is a Hot Air Oven? Complete Guide for Laboratory and Industrial Use

Description

Using the principle of forced air flow, hot air ovens are employed in laboratories for conducting tests for the effect of ageing on various physical characteristics of different materials such as yarns, fabric, paper, etc. Moreover, these convection ovens with forced air flow are also employed for high-quality applications of drying and baking in the sectors of laboratory, medical or biomedical and pharmaceutical and textile industries where speedy heating up and even temperature control are of prime importance. Commonly referred to as hot air circulating ovens, these ovens use a blower/fan within them to circulate warm air inside the interior cavity of the oven.
We provide you with a hot air oven that can operate continuously at temperatures as high as 250 °C and has a safe operation process, meaning you do not have to worry about any danger while conducting your tests. We provide you with standard types of hot air ovens that range between 22 liters to 300 liters. In addition to these ranges, we can customize hot air ovens according to the requirements of customers with respect to temperature ranges, sizes, and capacities.
What is Hot Air Oven?
A hot air oven is laboratory equipment used for drying, baking, ageing tests, moisture removal and dry heat sterilisation. It utilizes electric heating elements and forced air circulation to maintain a uniform temperature throughout the chamber.
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Hot Air Oven Working Principle
The hot air oven works on the principle of forced air convection. Heating elements generate heat while a motor-driven fan circulates hot air uniformly throughout the chamber. A PT-100 sensor continuously measures temperature, and the PID controller regulates heating to maintain the selected temperature accurately.
Hot Air Oven Diagram
Outer Cabinet
Mineral Wool Insulation
Stainless Steel Inner Chamber
Heating Elements
Air Circulation Fan
PT100 Temperature Sensor
Adjustable Shelves
PID Temperature Controller
Ventilation Port
Safety Thermostat
Hot Air Oven Diagram showing heating elements, air circulation blower, PT100 sensor, controller and insulation arrangement.
Hot Air Oven Features:
Hot Air Oven Temperature Up to 250°C
Temperature safety as per DIN 12880 Class 3.1
Precise and even heat distribution
Noise-less fan
Safe for operator and samples
Double-walled construction
Removable stainless steel shelves
Digital temperature controller
Overheat and overcurrent protection
Forced air circulation
Ventilation of gases
Imported heating element
Applications of Hot Air Oven
Dry Heat Sterilization
Glassware Drying
Pharmaceutical Testing
Textile Ageing Test
Paper and Packaging Testing
Electronic Component Drying
Food and Beverage Laboratories
Research and Development Laboratories
Hot Air Oven Temperature:
Temperature Range: All hot air ovens provide a temperature range of 5°C above ambient to 120°C, 150°C, 180°C, 200°C and 250°C with an accuracy of ±2°C. Temperature is controlled with mechanical temperature control (rotary knob) or by digital control (PID controller). For uniform rotation of heat inside the chamber, a noiseless fan is used for air circulation.
Construction: Each hot air oven is produced with double-walled construction and made of 304-grade stainless steel with insulation of mineral wool for efficient thermal loss.
In economical models, the exterior chamber is made of powder-coated MS, while 304 stainless steel is used as an option. The inner chamber is completely made of stainless steel.
which is easy to clean and maintain. Shelves are made of painted steel and can be easily adjusted inside the chamber with ribs created inside the interior chamber walls.
Doors: Doors are double-walled, made of MS steel (stainless steel optional), and also fully insulated with mineral wool, fitted on heavy hinges.
Sturdy handle provides comfortable opening and closing. Doors open 180° in order to provide enough access to the heating chamber.
Heating Elements: For efficient heating, our hot air ovens are fitted with branded heating elements, nickel/chrome-plated nichrome wire, kept inside the beads and placed at the bottom and both sides of the chamber.
Ventilation: For safe removal of hot gases and fumes, air ventilators are provided near the top of both sides.
Safety Features: For safe operation of hot air oven, several safety instruments are fitted;
An automatic circuit breaker turns off the unit in case of over-temperature and other short circuits. Audio and visual alarms can be fitted as an option to alert the user if the tempe