Introduction
A natural convection oven is a laboratory and industrial oven that heats materials by natural convection, in which the heated air rises and circulates within the chamber without a fan, and it is used in laboratories, industry, and many applications for drying, heating, and baking. The oven consists of an insulated chamber with heating elements at the bottom or sides, a temperature controller, and a digital display; the heating elements heat the air at the bottom of the chamber, and the heated air rises naturally, creating a gentle convection current that distributes the heat throughout the chamber, and the natural convection provides a gentle and even heating, which is suitable for samples and materials that may be disturbed by forced air, such as powders, and the oven provides a controlled temperature, typically from above ambient to 200-300 degrees Celsius, and it has adjustable shelves and a vent for the release of moisture and vapors. Natural convection ovens are used for drying glassware and samples, for drying chemicals and materials, for baking and curing, for heating samples, for moisture determination, for sterilization, for aging tests, for laboratory use, and for many other applications, in laboratories, in the pharmaceutical, food, and chemical industries, and they are available in various sizes, with features such as precise temperature control, uniform heating, and safety interlocks. With their gentle and uniform heating, natural convection ovens are essential for drying and heating applications where forced air is not suitable.
Natural Convection Oven LNCO-T2014
Natural Convection Oven offers a temperature control range of RT +10 to 300℃ with a capacity of 210 cold-rolled steel, precisely shaped and treated with an anti-corrosive spray coating...
Natural Convection Oven LNCO-T2012
Natural Convection Oven offers a temperature control range of RT +10 to 300℃ with a capacity of 70L. It’s corrosion-resistant mirror-finish stainless steel that withstands high tempe...
Natural Convection Oven LNCO-T2013
Natural Convection Oven offers a temperature control range of RT +10 to 300℃ with a capacity of 136 times, stable heat output, and durability during long-term use. The double-row digit...
Natural Convection Oven LNCO-T2010
Natural Convection Oven offers a temperature range of RT +10 to 300℃ with a resolution ratio of 1℃. It is designed with a temperature fluctuation limited to ±1°C, which ensures repea...
Natural Convection Oven LNCO-T2011
Natural Convection Oven offers a temperature range of RT +10 to 300℃ with a capacity of 42L. Its 40 mm exhaust outlet also functions as a convenient test hole for process monitoring. T...
Natural Convection Oven LNCO-T2010
Natural Convection Oven with a generous 27 L chamber is ideal for efficient small-batch drying and heating tasks. Its mirror-polished stainless steel interior ensures easy cleaning and l...
Natural Convection Oven LNCO-T2010
Natural Convection Oven offers a wide temperature range from room temperature +5℃ up to 300℃, with high precision of 0.1℃, and a spacious 40L stainless steel chamber. The oven uses ca...
Natural Convection Oven LNCO-T2014
Natural Convection Oven is built for large-scale drying, heating, and sterilization with a 200 L chamber and 3 adjustable shelves. It uses a silent natural convection system to deliver u...
Natural Convection Oven LNCO-T2013
Natural Convection Oven with a spacious 140 L chamber is ideal for large-scale drying, heating, and sterilization tasks. It features corrosion-resistant stainless steel shelves for long-...
Natural Convection Oven LNCO-T2012
Natural Convection Oven with a 96 L chamber is ideal for medium-scale drying, heating, and sterilization. It features a silent natural convection system for uniform, low-noise heating. T...
Natural Convection Oven LNCO-T2011
Natural Convection Oven features a 54 L chamber with two stainless steel shelves making it ideal for handling medium-sized sample. Its mirror-finished stainless steel interior ensures ea...
Natural Convection Oven LNCO-T2010
Natural Convection Oven provides a stable test space for pre-heating, drying, changes about physics and chemistry testing. Equipped with a highly precise temperature controller for even ...
Standards
DIN 12880:2007-Laboratory electrical equipment-Heating cabinets and heating ovens
ASTM E145-94(2016)-Standard Specification for Gravity Convection and Forced Ventilation Ovens and Incubators
Complies with the above standards, but is not limited to them.
Features
1. Natural convection oven for gentle, uniform heating without forced air.
2. Gravity convection for delicate samples and applications sensitive to air movement.
3. Suitable for laboratory, medical, pharmaceutical, food and research use.
4. Includes oven chamber, heating elements, controller, shelves and operation manual.
5. Supports gentle drying, heating, curing and incubation for delicate applications.
FAQ
Q1: What testing scenarios is this oven mainly applied to?
A: The natural convection oven is used in analytical laboratories, medical facilities, pharmaceutical testing, food processing, biological research and institutions to provide gentle, uniform heating through natural (gravity) convection without forced air movement for drying, heating, curing and incubation of delicate samples and applications sensitive to air currents. It supports laboratory sample drying of delicate materials, medical instrument warming and drying, pharmaceutical sample preparation and drying, food moisture analysis (gentle drying), biological sample incubation, glassware drying, and general laboratory heating where forced air would disturb samples. The natural convection design provides gentle, quiet heating without air movement, making it suitable for lightweight samples, powders, filters and materials that could be disturbed by forced air.
Q2: What standards does the oven comply with?
A: The natural convection oven complies with relevant IEC 61010 laboratory electrical safety standards, applicable ISO and GB/T standards for laboratory drying ovens, and relevant medical device regulations for clinical use. The instrument follows applicable electromagnetic compatibility standards. Temperature accuracy should be verified with a calibrated reference for critical applications. Specific applications follow their own test methods (e.g., AOAC, ISO for food moisture).
Q3: What is the warranty period for the whole oven and key components?
A: The whole natural convection oven is covered by a 12-month warranty. The heating elements, controller, chamber, shelves and housing are covered, while gaskets and fuses are accessories or consumables. Damage from improper use, overheating or unauthorized repair is excluded. Extended service contracts may be available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation is simple: place samples on shelves, set temperature and time, and start. No professional training is required for basic use, but users should follow proper loading, temperature setting and safety procedures. We provide an operation manual and remote guidance. Natural convection ovens have slower temperature recovery and less uniformity than forced air models.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Temperature calibration against a reference thermometer recommended every 6-12 months for critical applications. Heating element condition checked. Routine cleaning of chamber and shelves. Full system performance check annually. Gasket and seal inspection regularly. Temperature uniformity verified periodically (natural convection has less uniformity).
Q7: Are supporting consumables universal?
A: Shelves, gaskets and fuses are available from laboratory suppliers. Long-term consumable cost is very low for a natural convection oven.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes chamber capacity, temperature range, control type (analog, digital, programmable), shelf configuration, view window and accessories. Additional shelves and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the natural convection oven and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged at additional cost. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The natural convection oven dries, heats or incubates samples including delicate powders, filters, lightweight materials, glassware, food samples, pharmaceutical samples and other materials within the temperature range, chamber capacity and specification. The natural convection design is suitable for samples that would be disturbed by forced air (lightweight powders, filters, papers) but has slower heating and less temperature uniformity than forced air ovens. Users should not overload the chamber (maintain air circulation gaps), use appropriate containers for the sample, set correct temperature and time, avoid drying flammable solvents in standard ovens, allow proper cooling before removing hot samples, and follow proper safety procedures. The oven should be placed on a stable, heat-resistant surface with proper clearance for ventilation. For moisture determination, follow the specific test method (AOAC, ISO) for sample size, temperature and drying time, and note that natural convection ovens may have longer drying times than forced air. The chamber should be cleaned regularly to prevent residue buildup. The oven should not be used for applications requiring rapid temperature changes or high uniformity (use forced convection). For delicate samples, the gentle natural convection helps prevent sample loss from air currents. The heating elements should be inspected regularly. The oven should be allowed to cool before cleaning.
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