I R Technology Services Pvt. Ltd.

The TGA801 maintains the core capabilities and reliability of previous generations of LECO macro TGA instruments, while providing key improvements in performance and robustness. State-of-the-art hardware combined with a touch-screen software platform and rugged design provides accurate, high-precision thermogravimetric constituent analysis—moisture, ash, volatile content, and LOI in various organic, inorganic, and synthetic materials. Complying with ASTM standardized methods, the TGA801 is applicable to many industries and applications including coal, cement, catalyst, foods, and feeds.

Macro thermogravimetric analysis (nominal 1 g) replaces the often slow, labor-intensive, traditional manual gravimetric techniques that require multiple sample weighing and transfer steps involving ovens, muffle furnaces, and desiccator equipment. Flexible method settings, automation, and hardware capabilities deliver an automated analysis process while requiring only the manual measurement of the initial sample mass, for maximum productivity in your lab.

Cornerstone Mobile remote software keeps the user updated from their smartphone, tablet, or PC on the instrument's analysis batch progress, performance, and status while away from the instrument.

• Automated analysis of up to 19 samples for increased throughput.
• Automatic end point recognition based upon sample mass constancy
• Stable and precise mass measurements throughout the analysis cycle using an integrated, thermally isolated 0.0001 g low drift balance
• Precise furnace temperature ramping and set point control provides excellent temperature accuracy with low temperature overshoot
• Rotating automation sequence provides uniform exposure of all samples to the furnace conditions
• Automated control of furnace atmosphere and gas flows (air, nitrogen, or oxygen)
• Flexible method settings enable configuration of system to emulate classic gravimetric test method requirements
• Furnace lid locks open preventing the uncontrolled closure of the furnace lid in the event of a power or pneumatic interruption

DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. DSC can be used to measure a number of characteristic properties of materials. Using this technique it is possible to observe fusion and crystallization events as well as glass transition temperatures and can be also used to study oxidation, as well as other chemical reactions.

It is widely used in industrial settings as a quality control instrument due to its applicability in evaluating sample purity and for studying polymer curing.

Basically, Rigaku has the lineup of two kinds of heat-flex DSC meeting market needs: standard type and high-temperature type. The standard DSC has further an extensive lineup of cooling systems.

We can set maximum 24 samples and aside from continuous measurements, it can also perform single measurement as well as interrupt-a-sequence measurement.

• High sensitivity, high performance and low noise, realized by a compact furnace
• Quick gas substitution enabled by the compact furnace
• Remarkable heating and cooling rates that enhance the efficiency of measurement
• Safety is emphasized on the entire system

Simultaneous Thermal Analysis (STA) generally refers to the simultaneous application of thermogravimetry (TG) and differential thermal analysis (DTA) to one and the same sample in a single instrument. The measurement conditions are perfectly identical for the TG and DTA signals (same atmosphere, gas flow rate, vapor pressure of the sample, heating rate, thermal contact to the sample crucible and sensor, radiation effect, etc.). Rigaku adopts the horizontal differential triple-coil balance system which is the mainstream mechanism because the thermal drift which apparent mass change with increasing temperature becomes negligibly small.

TG can provide information about physical phenomena, such as second-order phase transitions, including vaporization, sublimation, absorption, adsorption, and desorption, while DTA can provide information on the transformations that have occurred, such as glass transitions, crystallization, melting and sublimation.

The Infrared heating furnace can be selected for quick heating and cooling. The sample is heated by infrared radiation emitted from infrared lamp.

The sample holders are easily replaced adopting the plug-in type holder. When replacing sample holders due to spillage, maintenance is quite simple. The auto sample changer can be attached to the standard TG-DTA. We can set maximum 24 samples and aside from continuous measurements, it can also perform single measurement as well as interrupt-a-sequence measurement.

Dynamic TG mode that is a sample controlled thermogravimetry (SCTG) where the heating rate is controlled in response to mass changes in the system's properties is equipped as the standard function.

The information gathered can even be enhanced by coupling the TG-DTA instrument to an Evolved Gas Analyzer (EGA) such as mass spectrometry (MS).

• Accurate compensation on horizontal differential triple-coil balance
• Compact furnace greatly speeds up heating and cooling
• Dynamic TG measurement modes
  • Stepwise isothermal analysis (SIA) method
  • Constant rate control (CRC) method
• Measuring temperature range
  • Ambient to 1100 °: 8122 standard model
  • Ambient to 1500 °: 8122 high-temperature model
• Operating temperature range (maximum)
  • 950 °: Infrared heating furnace model

The compact humidity generator is connected to the TG-DTA for measurements under water vapour atmosphere with constant relative humidity. Equipped with a polymer type humidity sensor and high precision temperature sensor, its response to various water vapour concentrations is quick and stability for longer measurement is realized. It enables the user to perform heating under a constant relative humidity. For standard furnace, it can measure from dry to 90%RH at ambient temperature; and from dry to 90%RH using the specialized furnace at ambient to 60°C through the circulator temperature control.

Humidity is known to have a significant influence on the stability of many materials. In many industrial applications, ambient temperatures and humidity have a major impact on the quality of products and processes. Defective installations or production facilities, such as switchboards, electronically controlled machines and drives, damaged electrical equipment or electrical interference can cause damages, interruptions and quality losses that result in financial and/or material losses.

TMA is the measurement of a change of a dimension or a mechanical property of the sample while it is subjected to a temperature regime.

TMA uses interchangeable probes at varied loads to make a number of measurements, including the softening temperature or glass transition temperature, tensile modulus, compression modulus, the thermal expansion, melting temperature, crystalline phase transition temperature, crystalline to amorphous transition temperatures, and creep under load, by measuring the change of a dimension of a material.

TMA includes several variations according to the attachment probe and the methods of the attachment probe are applied: compression loading, tensile loading, penetration, 3-point bending methods.

Rigaku adopts differential expansion principle where the thermal expansion or shrinkage generated from the detection mechanism itself can be cancelled. It offers high accuracy and excellent reproducibility in expansion and shrinkage measurements, even with low expansion materials or thin materials. It can also measure using the non-differential or conventional expansion method.

Dynamic TMA mode that is a temperature control method in which the sample’s shrinkage associated with sintering is measured not by constant heating rate but the heating rate continuously changes depending on the sample’s shrinkage rate. Thru this temperature control, the temperature program simulation can be applied to inhibit grain grows and obtain a sintered material.

Features:

• High-sensitivity, high-precision measurement by the differential method
• Multi-measurement system that excels in expandability
• Flexible handling of various sample sizes
• Notable enhancement of heating and cooling rates enabled by a compact electric furnace
• Simple sample setting mechanism, the first of its kind in differential TMA
• Safety foremost emphasized on the entire system

The compact humidity generator is connected to the TMA for measurements under water vapor atmosphere with constant relative humidity. This system is for water vapor generation at ambient or above ambient temperatures. It adopts the polymer type humidity sensor and high precision temperature sensor, its response to various water vapor concentrations is quick and stability for longer measurement is realized. The setting of the relative humidity is achieved by the PC station and synchronizes with the temperature program. For standard furnace, it can measure from dry to 90%RH at ambient temperature; and from dry to 90%RH using the specialized furnace at ambient to 60°C through the circulator temperature control.

Humidity is known to have a significant influence on the stability of many materials. In many industrial applications ambient temperatures and humidity have a major impact on the quality of products and processes. Defective installations or production facilities, such as switchboards, electronically controlled machines and drives, damaged electrical equipment or electrical interference can cause damages, interruptions and quality losses that result in financial and/or material losses.