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       Material Testing Instruments
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93

Thermal Ageing Oven as per IEC & IS (with HMI)


Model Number: SSI 502 AGIS HMI

Standard Number: IS: 10810 Pt.10, IS: 10810 Pt. 11, IEC 60811-1-2

Thermoplastic and Poly vinyl Chloride substances when exposed to heat undergo many types of physical and chemical changes. The extent and type of change that takes place depends upon the severity of exposure of the sample to heat (i.e., temp. range), duration and rate of air flow.

 

Salient Features
Chamber Size :  100mm (Dia) x 300 mm (Height)
No of Chambers :  4 chambers, Independently controlled
Instrument Construction :  Test Chamber is made of thick Alumnium Pipe, MS / GI outer Chamber
Temperature Range :  Ambient to 200oC, LC 0.1oC
Temperature Control  Using PID Digital Temperature Controller, +/- 2oC
Air Flow  0-1 LPM, Contolled using Needle Valves
Air Flow Display :  Using Digital Flow Sensors
Instrument Control :  Using PLC and HMI 
Delivery :  4 to 6 Weeks
Packing :  One Wooden Box,.
Alternate Model :  SSI 502 AGIS (Ageing Oven as per IEC & IS without HMI Control)

Description

Principle

Thermoplastic and Poly Vinyl Chloride substances when exposed to heat undergo many types of physical and chemical changes. The extent and type of change that takes place depends upon the severity of exposure of the sample to heat (i.e., temp. range), duration and rate of air flow. This test makes an assessment of change in Tensile Strength and Elongation of the material on subjecting them to accelerated ageing in hot air.

Standards

The Instrument is especially designed to suit the requirement of IEC: 60811-1-2, IS 10810 (Pt 10), IS 10810 (Pt 11)

Instrument

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Each Cell of Thermal Ageing Oven is a complete instrument in itself i.e., fitted with individual Temp. Indicating Controller, Air Flow Meter, Air temperature controller and an Hour Meter. This enables the user to test different type of samples at desired temperature and duration, depending upon test requirement of end users & testing authorities. 

The Thermal Ageing Oven instrument consists of the following:

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      A double walled chamber with inside chamber of thick aluminum sheet.

      Size of the chamber is 100 mm dia. x 300mm ht.

      Jacket type heater for the chamber.

      Digital Temp. Indicating Controller with sensor. Temp. range 0-200 ± 2 oC.

      Digital Flow Sensors with needle valves for controlling the volume of air passing through the chamber.

      Air inlet nozzle for the airline or air compressor.

      Specially designed split top cover to hold three to five test samples in each chamber.

      7″ HMI to display and control the ageing Oven.

       Blind Thermostat to cut off heaters after 250oC in case of temperature overshoot for each chamber. 

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To operate the Thermal Ageing Oven unit Compressed Air line is to be provided by the customer. If the customer is using his own air compressor, it may require one pressure regulator, pressure gauge & connecting pipes which are available from us.

Difference Between Hot Air Oven and Thermal Ageing Oven:

The test requirement is 8 to 20 air changes per hour, measured on a Flow Meter. According to IS standard, if the Oven does not have a regulated air supply, the oven is then termed as a Hot Air Oven and not a Ageing Oven (as offered by some manufactures) and cannot be used for ageing of samples.

After ageing in the ageing test oven for specified temp. & duration the samples are to be tested on Tensile Testing Machine for tensile & elongation. For preparation of Dumb-bell shaped samples, you may require hydraulic hot press, dumb-bell dies, dumb-bell cutting press, two-roll mill etc. Please ask for details.