1、 Instrument Introduction

QMS 403 A ë olos with complete design ® Quadro can be used in conjunction with TGA, STA, DSC, DIL systems
QMS 403 Aëolos ® Quadro quadrupole mass spectrometer is a compact new mass spectrometer with a heated capillary inlet system, which can be used for conventional gas analysis and is particularly suitable for thermal analysis of volatile decomposition products. The optimized design of this system allows it to be connected to different instruments, such as DSC TGA、DIL。
Optimized airflow design is beneficial for combined use
●Single step decompression
●Heating at 300 ° C (optional 350 ° C) can effectively reduce local "cold spots" on the entire gas transmission pipeline
●Heating chamber allows for convenient and precise adjustment of the distance between the quartz glass capillary inlet and QMS
●Flexible design, capable of conducting standard thermal analysis measurements, as well as synchronous measurements with TGA, MS (GC-MS), and MS-FTIR
●Durable and easy to maintain, with high sensitivity (able to detect weight loss at µ g level)
●TGA-MS can be tested in a humid atmosphere
●A hyperbolic four stage rod system with a pre filter can improve the transmission of high mass numbers (large molecules) and also enhance the detection sensitivity of low mass numbers (such as H2, He)
●The SEM equipped with two separate emitters and an integrated Faraday cup has a high dynamic range and a long service life
●Can present MS signals and thermal analysis data in three-dimensional form
●Through Proteus ® Software for operation and data analysis
A comprehensive heating transmission system and single step pressure reduction design can achieve non condensing gas transmission
The gas transmission system heated to a higher temperature and the design without pressure relief holes can effectively avoid condensation of decomposition products, ensuring high detection sensitivity and facilitating quantitative analysis of identified gases.
The inlet system with capillary tube can also be used for analysis of gases from other sources (non thermal analysis system generated escape gases).

NETZSCH Thermal Analysis Design
NETZSCH thermal analysis equipment has considered the feasibility of combined analysis in the design stage. In the past 40 years, every time a new product is developed, the gas transmission path is considered and optimized: from the furnace outlet, to the adapter and capillary, and then to the QMS inlet. Nowadays, the gas loss caused by condensation is almost completely eliminated, and only a small carrier gas flow rate is needed to completely remove the gas products, minimizing the dilution of volatile products released from the sample, thus ensuring TGA/STA/DL QMS 403 A ë olos ® The Quadro combination system has high detection sensitivity.

2、 QMS 403 A ë olos ® Quadro - Technical Parameters (Continuously Updated)
●Quality range: 1u~300u, optional 512u, with automatic tuning function
●Ion source: Cross beam El
●Cathode/filament: Two iridium cathodes coated with Y2O3
●Detector: SEM with discrete secondary emitter and integrated Faraday cup
●Vacuum system: Turbomolecular pump with 4-stage diaphragm pump (oil-free)
●Capillary tube: Quartz glass (up to 300 ° C), optional stainless steel (up to 350 ° C), with heating coil for easy replacement
●Adjustable temperature adapter connector: capillary tube and QMS inlet system heated up to a maximum temperature of 300 ° C (optional 350 ° C)
●Pressure reduction method: single-stage, from 103mbar to 5x10-6mbar, non porous cone
●QMS measurement modes: simulated scanning, bar chart scanning, multi ion tracking

IIIThe same software Proteus ®， Complete control of thermal analysis instruments and QMS 403 A ë olos ® Quadro
Proteus ® The software can control QMS 403 A ë olos ® The operation control and data acquisition of Quadro and thermal analyzer are both implemented through the same software.
●Independently edit and define thermal analysis related parameters (such as temperature program, heating rate, etc.) and mass spectrometry related parameters (such as mass number range, scanning method, etc.)
●Synchronize start or stop combination testing
●Analyze MS results in Proteus software
●Display the relationship between temperature, TGA/DSC curve, and mass trajectory graph in 3D format, including peak determination, different color themes, and surface viewing angles
●Mass spectrometry data can be exported in NIST format for easy retrieval and identification in the NIST database

4、 QMS 403 D A ë olos ® - Related attachments
Using PulseTA ® Technology can inject a certain amount of gas or liquid into the purge airflow of thermogravimetric or synchronous thermal analysis instruments at a certain temperature or moment during testing. Mass spectrometry signals can be calibrated to achieve quantitative analysis of gaseous products, or to observe the reaction between samples and injected gases. Its typical applications include:
●Inject inert gas for calibration
●Injecting reactive gases for gas-solid reactions, such as the reduction of metal oxides by hydrogen gas
●Injecting reactive gases for adsorption reactions, such as molecular sieves adsorbing ammonia gas