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SDTGA1200 Thermogravimetric Analyzer (Proximate Analyzer)


SDTGA1200 can be used to determine the moisture, ash and volatile matter as well as calculation of fixed carbon and calorific value in coal, coke, calcined petrol coke and other solid biomass fuel.

Dual Furnaces, dual internal balances, stable performance, accurate test result.
The only proximate analyzer which can test batches of sample without waiting for cooling.
Sundy Sundy

Product description


High precision & accuracy.
①Two internal balances away from high temperature and heat radiation, no drift occurs.
②With automatic calibration function, each weighing is accurate and reliable.
③Simulate test environment and condition of drying oven and muffle furnace, exact in accordance with standard.
④The unique automatic cleaning function of low temperature furnace completely eliminates the influence of dust on result.
High efficiency
①Dual furnaces design, low-temperature furnace for moisture test and high- temperature furnace for ash and volatile matter test.
②Analysis for moisture, ash and volatile matter can be conducted simultaneously and consecutively.
③No blank sample during test. Full index of single batch samples (18 samples) can be finished in 150 min.
Patented technology
①Tailored volatile matter crucible with unique auto-sample loading mechanism avoided the operation of replacement or removal of the crucible cover under high temperature.
②Unique crucible clamp device avoid upset and drop of crucible.
③Unique crucible detection mechanism avoid mistake and missing of placing crucible.
④Unique sample tray positioning mechanism and drive mechanism ensure stable and reliable operation.
Human based design, Environment friendly and energy saving.
①Sample tray locates inside, real time data transmission. Weighing sample at room temperature, away from heat radiation.
②Special crucible collector discards residual automatically. No need to clamp crucible at high temperature. Easy and safe operation.
③Equipped with dust collector, environment friendly and clean.
④Compressed air can meet the requirement of gas supply, no oxygen and nitrogen required.
Intelligent control
①Easy to use Windows-based operating software, after finishing the sample weighing, the operator can be free for other tasks.
②Several proximate analyzers can be controlled by a single PC with Ethernet communication technology.
③Strong data processing ability, statistic report and print function, connection with network and balance are available by standard interface RS232.





Test index

Moisture, ash and volatile matter

Continuous test in batches



ISO 17246, ISO 18123/18122/18134, ISO 11722, ISO 1171,ISO 562,ASTM D3173/D3174/D3175/D7582,  GB/T 30732, GB/T 212


0.02% RSD


Ash: 0.30% (<15.00%); 0.50% (15.00~30.00%); 0.70% (>30.00%)Volatile matter: 0.50% (<20.00%); 1.00% (20.00~40.00%); 1.50% (>40.00%)

Cooling time required for batches of test


Furnace Cooling (forced air/N2)

950 to 500°C<30 min

Balance Resolution


Quantity of furnace


Sample introduction and taking


Quantity of sample/ Analysis time

GB/ISO:18 / 150 min (all test index) ASTM:16 samples / 60 min~90 min (Moisture);16 samples/ 230 min (America Standard Ash), 10 samples / 7 min (ASTM Volatile matter 1) 10 samples / 36 min(ASTM Volatile matter 2)

Sample weight


Max. power


Furnace Temp

Room temp. to 1000℃

Furnace Heating

Resistance Wound

Temperature Calibration

Standard thermocouple

Temp.control precision

±2℃ (moisture) ±5℃ (ash, volatile matter)

Gas Flow Rate

GB:Moisture:Nitrogen,30~60 times/h   Ash:Air 60~120 times/h ASTM:Moisture:Nitrogen or Air 2~4(Furnace Volume /min)volatile matter:Nitrogen 2~4(Furnace Volume /min)

Power requirement

AC 220V(-15%~10%),50/60Hz

Gas requirement


Gas Pressure

Air 5 to 6 bar (75 to 90 psi)

Minimum Gas Purity

Air/Nitrogen/Oxygen 99.5%; dry, oil-free

Sample weighing

Under normal temp.

Test Temperature

Moisture 105℃,Ash 815℃,Volatile matter 920℃~950℃ Can be customized







Operational Control

Windows®-based software on external PC/Windows7/ WindowsXP

Advance Calculation


Analysis Report


Statistics Report


System Monitor


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