THERMOGRAVIMETRIC

ANALYSIS

TGA HP

T H E R M A L A N A L Y S I S

2

Since 1957 LINSEIS Corporation has been deliv-

ering outstanding service, know how and lead-

ing innovative products in the field of thermal

analysis and thermo physical properties.

We are driven by innovation and customer sat-

isfaction.

Customer satisfaction, innovation, flexibility

and high quality are what LINSEIS represents.

Thanks to these fundamentals our company

enjoys an exceptional reputation among the

leading scientific and industrial organizations.

LINSEIS has been offering highly innovative

benchmark products for many years.

The LINSEIS business unit of thermal analysis

is involved in the complete range of thermo

analytical equipment for R&D as well as qual-

ity control. We support applications in sectors

such as polymers, chemical industry, inorganic

building materials and environmental analytics.

In addition, thermo physical properties of solids,

liquids and melts can be analyzed.

LINSEIS provides technological leadership. We

develop and manufacture thermo analytic and

thermo physical testing equipment to the high-

est standards and precision. Due to our innova-

tive drive and precision, we are a leading manu-

facturer of thermal Analysis equipment.

The development of thermo analytical testing

machines requires significant research and a

high degree of precision. LINSEIS Corp. invests

in this research to the benefit of our customers.

Claus Linseis Managing Director

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Innovation

We want to deliver the latest and best tech-

nology for our customers. LINSEIS continues

to innovate and enhance our existing thermal

analyzers. Our goal is constantly develop new

technologies to enable continued discovery in

Science.

German engineering

The strive for the best due diligence and ac-

countability is part of our DNA. Our history is af-

fected by German engineering and strict quality

control.

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THERMOGRAVIMETRIC ANALYSISThermogravimetric measures the weight chan-

ge of a sample as a function of temperature or

time under controlled atmosphere.

High precision beam balance

Our different microbalances are specifically de-

signed to accomplish thermal analysis tasks in

the best possible way.

Providing ultra light weight design to follow fast

weight changes and symmetric construction for

ultra low drift long term measurements.

Sample holder

Counterweight

Beam

• notaffectedbylocalgravity

• notaffectedbythermalfluctuations

highest possible PRECISION

• directmeasurementofmass

• dependingonmodel,balancecan

handlemgupto50gsamplemass

AdvantagesofLINSEISBalance Design

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SENSORSOur TGA can be equipped with different user ex-

changeable TG sensors.

Each sensor is available with different thermo-

couples to provide the highest sensitivty for

your desired temperature range.

Al2O3

Platinum

Aluminium

others

Bestpossiblesensitivityforyourapplication

Electromotive force / Temperature

Ther

mo

elec

tric

Vo

ltag

e [m

V]

Temperature [°C]-500 0 500 1000 1500 2000 2500

80

60

40

20

0

-20

Type E

Type K

Type C

Type SType B

TG-sample holders for many different applications

Mesh 3.0/0.3 ml

All sensors available with the thermocouples illustrated. LINSEIS Senosor combinations cover the broadest temeprature range in the market (-180 up to 2400°C).

Wheel

0.14 ml 0.12 ml

custom volume

6

UNIQUE FEATURESVacuum and controlled atmosphereThe balance design provide for high vacuum,

inert, reducing, oxidiz ing or humidified atmos-

phere. Furthermore, the instrument can be pres-

surized up to 5 bar overpressure (option). Cer-

tain corrosive conditions can be analyzed with

proper precautions. The system is capable of

adapting residual gas analysis systems using an

optional heated capillary.

EvolvedgasanalysisOptional gas analysis with MS, FTIR or GCMS

is possible. This provides valuable additional

information.

Wide temperature range RTto1200°CThe LINSEIS STA instruments can be equipped

with up to three furnaces at the same time. A

broad variety of different furnaces is available

to enable measurements in the widest tempe-

rature range on the market. Unmatched selec-

tion of furnaces for widest possible temperature

range.

Vapor GeneratorA sophisticated vapor generator with heated in-

and outlet can be supplied with the equipment.

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Starter kitThe starter kit includes a variety of tool such

as scissors, cutting tools, anti electrostatic

tweezers, magnifier, crucible holder, pipette,

rasps, spatula etc.

OxygenGetterMaterialOGMThe LINSEIS oxygen getter system (OGM) can be

placed in any LINSEIS system as a modification

of the sample gas capillary. It is used to getter

smallest traces of residual oxygen in the sample

chamber by offering a stronger oxygen affinity

than sample materials, combined with a high ef-

fective surface to ensure the oxygen molecules

react with the getter before they have a chance

to get in touch with the sample. Especially for

oxidation sensitive samples, where hydrogen

gas mixtures can’t be used or very small enthal-

py signals are expected, the OGM is a very effec-

tive and easy to use solution. With its modular

character, it can be used for special experiments

and can be easily removed for measurements

under air or where the oxygen content is less

important.

Benefits• unique high speed heating and cooling rates

of up to 300°C/min

• compact table top pressure TGA

System canbe placed in hood or glovebox

• small internal volume permits fast gas changes

and reduces gas consumtion drastically

• furnace made of non-porous material for high

vacuum applications and fast gas changing

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optionalEGA(FTIR/MS/GC-MS)

Heater

Sample

Gas flow

Gas

Purgegas

MFC

Balance

Vacuum

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Benefitsoftheverticaltoploadingdesign

Verticalsystem(sampleonbottom)

Advantage: • Stable position within furnace

Disadvantages:• Difficult sensor exchange• “Dangerous” gas flow within balance housing (sample gets blown out)• Sensor position depends on sample weight

Horizontalsystem

Advantages: • Small buoyancy effects

Disadvantages:• Sensor exchange very difficult• Sample handling difficult• Very high purge gas rate required• Problems due to sensor expansion during heating/cooling

Verticalsystem(sampleontop)

LINSEISconfiguration

Advantages:• Easy sample handling• Easy exchange of sample holder• Stable position of the sample in the furnace (critical for good DTA/DSC and Cp results)

Disadvantage:• Complicated construction

The vertical “sample on top” design of the

LINSEIS thermobalance provides highest possi-

ble accuracy due to a stable position of the sam-

ple and easy sample handling.

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TGA HPTGA HP/1The highest resolution 0.025 µg balance for

small sample quantities allows the detection of

very small effects with highest accuracy.

TGA HP/2The standard model covers a broad application

range with excellent resolution 0.1 µg and accu-

racy.

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Ach

ieva

ble

Pre

ssu

re

150 bar

100 bar

50 bar

20°C 50°C 150°C 1000°C

Available temperatures and pressures

Unique FeaturesVacuum,VaporandControlledAtmosphere

The balance design provides for high vacuum

(10-4mbar), inert, reducing or hulmified atmos-

phere under static or flowing gas atmosphere.

Corrosive conditions can be analyzed with pro-

per precautions. A unique gas control for high

pressure applications is available to ensure

smooth gas flow switching under pressure con-

ditions without affecting the TG signal.

High pressure & high temperature

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SOFTWAREAll LINSEIS thermo analytical instruments are

PC controlled. The individual software mod-

ules run exclusively under Microsoft® Windows®

operating systems. The complete software con-

sists of 3 modules: temperature control, data

acquisition and data evaluation. The Windows®

software incorporates all essential features

for measurement preparation, execution, and

evaluation of a thermoanalytical measurement.

Thanks to our specialists and application ex-

perts, LINSEIS was able to develop comprehen-

sive easy to understand user friendly applica-

tion driven software.

Features-Software:• Program capable of text editing

• Data security in case of power failure

• Thermocouple break protection

• Repetition measurements with minimum

parameter input

• Evaluation of current measurement

• Curve comparison up to 32 curves

• Storage and export of evaluations

• Export and import of data ASCII

• Data export to MS Excel

• Multi-methods analysis (DSC TG, TMA, DIL,

etc.)

• Zoom function

• 1 and 2 derivation

• Programmable gas control

• Curve arithmethics

• Statistical evaluation package

• Free scaling

• Optional Kinetic and Lifetime Prediction

Software packages

TG–Features:• Mass change as % and mg

• Rate Controlled Mass Loss (RCML)

• Evaluation of mass loss

• Residue mass evaluation

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Multi-Instrument All LINSEIS instruments DSC, DIL, STA, HFM, LFA,

etc. can be controlled from one software tem-

plate.

Report GeneratorConvenient template selection to generate cu-

stomized measurement reports.

Multi-Lingual Our software is available in many different

user exchangable languages, such as: English,

Spanish, French, German, Chinese, Korean,

Japanese, etc.

Multi-User The administrator can generate different user

levels providing different rights to operate the

instrument. A optional Log file is available, too.

Data BaseState of the art data base design enables easy

data handling.

KineticsoftwareKinetic analysis of DSC, DTA, TGA, EGA (TG-MS,

TG-FTIR) data for the study of the thermal beha-

vior of raw materials and products.

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SPECIFICATIONSTGA HP

Temperature range RT up to 1100°C

Vacuum up to 10-3mbar (depends on selected pump)

Heating rate 0.1 up to 50°C/min

Temperature resolution ± 0.1°C

Temperatureaccuracy ± 0.3°C (substance calibration)

Data evaluation rate max. 10/s

Pressure controlup to 40 bar (adjustable, software contoolled)(higher pressure possible on request)

TG

Resolution 0.1 µg

Sampleweight 25 g

DSC(optional)

DSC-sensors E / K / S / C

DSC resolution 0.3 / 0.4 / 1.2 µW

DTA(optional)

DTA-sensors E / K / S / C

DTA-measuring ranges 250 / 2500 µW

DTA-resolution 0.03 nV

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APPLICATIONS

Coalgasification

Time [min]

0

–50

–100

–150

–200

–250

–300

–350

–400

–450

Delta

m [m

g]

2.0

1.0

0

–1.0

–2.0

–3.0

–4.0

H 2O [s

ccm

/min

]

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

N 2 [l/m

in]

0 20 40 60 80 100 120 140 160

Pres

sure

: 50.

0 ba

r 50.0

49.5

49.0

48.5

48.0

47.5

47.0

46.5

46.0

45.5

Pres

sure

[bar

]

Purge gas flow: 2.2 l/minLoss of volatile parts:–47.09 mg

Coal

gas

ifica

tion:

–42

8.03

mg

C

+ H

2O

CO

+ H 2

Stop water vaporStart water vapor

with 0.4 ml/min

100% coal

gasified

Coal was heated under nitro-gen atmosphere at 50bar pres-sure. The mass signal shows the loss of volatile components bet-ween 20 and 40min. After water vapor was added, the coal was gasified and nearly complete-ly consumed after 150min, leading to H2, CO, CH3OH and other useful reactive gases.

Activated, porous titanium sur-face was heated to 700°C under vacuum. At target temperature, hydrogen was added and the pressure was increased in an isothermal stage. The weight increase of the sample gives the amount of hydrogen that is ad-sorbed on the titanium surface over pressure, leading to satura-tion (2.5% weight) at 5 bar.

HydrogenAdsorptiononTitaniumat700°C

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

0 0.05 0.1 0.5 5

Adso

rped

Hyd

roge

n [%

]

Pressure [bar]

0 200 400 600 800 1000 1200 1400 1600

50

40

30

20

10

0

-10

-20

-30

-40

-50

Del

ta m

[µg

]

Temperature [°C]

The average baseline stabili-ty during linear heating up to 1600°C is within a range of 5µg. This allows highest accuracy and repeatability during the most demanding applications on STA.

Longtermbaselinestability

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LINSEISGmbHGermany

Vielitzerstr. 43

95100 Selb

Tel.: (+49) 9287–880 - 0

Fax: (+49) 9287–70488

E-mail: info@linseis.de

LINSEIS China

Kaige Scientific Park 2653 Hunan Road

201315 Shanghai

Tel.: (+21) 5055 0642

Fax.: (+21) 6806 3576

LINSEISPoland

Dabrowskiego 1

05-800 Pruszków

Tel.: (+48) 692-773-795

LINSEIS Inc. USA

109 North Gold Drive

Robbinsville, NJ 08691

Tel.: (+1) 609 223 2070

Fax: (+1) 609 223 2074

E-mail: info@linseis.com

LINSEIS France

Bureaux Paris

52 Boulevard Sébastopol

75003 Paris

Tel.: (+33) 1 73.02.82.72

www.linseis.com

Products: DIL, TG, STA, DSC, HDSC, DTA, TMA, MS/FTIR, In-Situ EGA, Laser Flash, Seebeck Effect, Thin Film Analyzer, Hall-Effect

Services: Service Lab, Calibration Service

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