DIL L75 PT Horizontal/Vertical

Horizontal/vertical dilatometer for research applications

Description

To the point

The Linseis DIL L75 PT Horizontal and the DIL L75 V are high-precision dilatometers for measuring thermal length changes in solids, liquids, powders and pastes.
The DIL L75 PT Horizontal offers a highly vacuum-tight design that enables measurements under vacuum as well as under oxidizing and reducing atmospheres.
The DIL L75 V is characterized by its frictionless “Zero Friction” design, which is particularly suitable for sintering studies and materials with extremely low expansion.
Both systems feature high-resolution inductive displacement transducers that ensure maximum accuracy, reproducibility and long-term stability.
Thanks to the comprehensive thermostatization and optional adaptations for use in a glovebox, they are versatile in use.
In addition, both models offer automatic pressure control, which allows the contact pressure to be infinitely varied depending on the application and keeps it constant throughout the measurement.

The following physical properties can be measured:

The cryogenic option of the DIL L75 V enables measurements at temperatures from -263°C to +220°C, offers various sample holders, vacuum operation and controlled atmospheres and ensures maximum accuracy and easy handling.

Unique features

Highly vacuum-tight push rod dilatometer

Measurements under vacuum
and controlled oxidizing or
reducing atmospheres

Highest accuracy and
reproducibility due to
high-resolution inductive
displacement transducer
and thermostatization

Automatic pressure control for
continuous contact pressure
between 10 and 1000 mN

Optional separation of mechanical and electrical
components for use in “glovebox”

Friction-free “Zero Friction”
design, ideal for sintering
studies and ULE materials

Compact design with optional
turntable for additional ovens

Cryo option for measurements at
temperatures from -263°C to +220°C

Service hotline

+1 (609) 223 2070

 

+49 (0) 9287/880 0

Our service is available Monday to
Thursday from 8 am to 4 pm
and Friday from 8 am to 12 pm.

We are here for you!

Specifications

Black on white

MODEL

DIL L75 Horizontal*

Temperature range:-180 up to 2800°C
LVDT
Delta L resolution:0,03 nm
Measuring range:+/- 2500 µm
Contact force:10 mN up to 1 N
Optical Encoder
Delta L resolution:0,1 nm
Measuring range:+/- 25000 µm
Automatic sample length detection:yes
Kraftmodulation:yes
Force modulation:yes
Contact force:10 mN up to 5N
Multiple furnace configuration:up to 2 furnaces
Motorized furnace operation:optional
Gas dosing:manual gas dosing or mass flow controller 1/3 or more gases
Contact force adjustment:included
Single/double dilatometer:optional
Softening point detection:included
Density determination:included
L-DTA:optional (up to 2000°C)
Rate controlled sintering (RCS):included
Thermal library:included
Electric thermostatization of measuring head:included
Low temperature options:LN2, Intra
Vacuum tight design:yes
Automatic evacuation system:optional
OGS oxygen getter system:optional
*Specs depend on configurations

MODEL

DIL L75 Vertical*

Temperature range:-263 up to 2800°C
LVDT
Delta L resolution:0,03 nm
Measuring range:+/- 2500 µm
Contact force:10 mN up to 1 N
Optical Encoder
Delta L resolution:0,1 nm
Measuring range:+/- 25000 µm
Automatic sample length detection:yes
Kraftmodulation:yes
Force modulation:yes
Contact force:10 mN up to 5N
Multiple furnace configuration:up to 3 furnaces
Motorized furnace operation:optional
Gas dosing:manual gas dosing or mass flow controller 1/3 or more gases
Contact force adjustment:included
Single/double dilatometer:optional
Softening point detection:included
Density determination:included
L-DTA:optional (up to 2000°C)
Rate controlled sintering (RCS):included
Thermal library:included
Electric thermostatization of measuring head:included
Low temperature options:LN2, Intracooler
Vacuum tight design:yes
Automatic evacuation system:optional
OGS oxygen getter system:optional
*Specs depend on configurations

Oven program

DIL L75 PT Horizontal

TEMPERATURE

TYPE

HEATING ELEMENT

ATMOSPHERE

TEMPERATURE SENSOR

-180°C – 500°CL75/264Thermo coaxinert, oxid., red., vac.Type K
-180°C – 700°CL75/264/700Thermo coaxinert, oxid., red., vac.Type K
-180°C up to 1000L75/264/1000Thermo coaxinert, oxid., red., vac.Type K
RT – 1000°CL75/220SiC, Kanthalinert, oxid., red., vac.Type K
RT – 1400°CL75/230SiC, Kanthalinert, oxid., red., vac.Type S
RT – 1600°CL75/240SiCinert, oxid., red., vac.Type S
RT – 1650°CL75/240 PTPlatinuminert, oxid., red., vac.Type S
RT – 2000°CL75/260GraphiteN2/Vac.Type C and/oder Pyrometer
RT – 2800°CL75/280GraphiteN2/Vac.Pyrometer

DIL L75 PT Vertical

TEMPERATURE

TYPE

HEATING ELEMENT

ATMOSPHERE

TEMPERATURE SENSOR

-263°C – 300°CL75/264 HeThermo coaxinert, oxid., red., vac.Semiconductor / Pt 100
-180°C – 500°CL75/264Thermo coaxinert, oxid., red., vac.Type K
-180°C – 700°CL75/264/700Thermo coaxinert, oxid., red., vac.Type K
-180°C up to 1000L75/264/1000Thermo coaxinert, oxid., red., vac.Type K
RT – 1000°CL75/220SiC, Kanthalinert, oxid., red., vac.Type K
RT – 1400°CL75/230SiC, Kanthalinert, oxid., red., vac.Type S
RT – 1600°CL75/240SiCinert, oxid., red., vac.Type S
RT – 1650°CL75/240 PTPlatinuminert, oxid., red., vac.Type S
RT – 1750°CL75/240 MMoSi2inert, oxid., red., vac.Type B
RT – 2000°CL75/260GraphiteN2/Vac.Type C and/oder Pyrometer
RT – 2400°CL75/270GraphiteN2/Vac.Pyrometer
RT – 2800°CL75/280GraphiteN2/Vac.Pyrometer

Accessories

  • Devices for sample preparation
  • Various sample holders (size, material)
  • Caliper for manual or online entry of the sample length
  • Turntable for up to 3 ovens
  • Various gas boxes: manual, semi-automatic and MFC controlled
  • Software option Rate Controlled Sintering (RCS)
  • Various rotary and turbomolecular pumps
  • Possibility of operation under 100% H2
  • LN2 cooling

Software

Making values visible and comparable

The powerful LINSEIS thermal analysis software, which is based on Microsoft® Windows®, performs the most important function in the preparation, execution and evaluation of thermoanalytical experiments, in addition to the hardware used. With this software package, Linseis offers a comprehensive solution for programming all device-specific settings and control functions, as well as for data storage and evaluation. The package was developed by our in-house software specialists and application experts and has been tried and tested over many years.
Dilatometer functions
  • Glass transition and softening point determination
  • Automatic softening point switch-off, freely adjustable (system protection)
  • Display of absolute or relative shrinkage or expansion
  • Representation and calculation of technical / physical expansion coefficients
  • Rate-controlled sintering (software option)
  • Sintering process evaluation
  • Density determination
  • Automatic evaluation routines
  • System correction (temperature, zero curve, etc.)
  • Automatic zero point adjustment
  • Automatic punch contact pressure control

General functions

  • Real-time color display
  • Automatic and manual scaling
  • Display of the axes freely selectable (e.g. temperature
    e.g. temperature (x-axis) against delta L (y-axis)
  • Mathematical calculations (e.g. first and second derivatives)
  • Saving complete evaluations
  • Multitasking function
  • Multi-user function
  • Zoom option for various curve sections
  • Any number of curves can be loaded on top of each other for comparison
  • Online Help Menu
  • Free labeling
  • EXCEL® and ASCII export of measurement data
  • Data smoothing
  • Zero curves are offset
  • Cursor function
  • Statistical curve evaluation (mean value curve with confidence interval)
  • Tabular printout of the data and expansion coefficients
  • Calculation of Alpha Phys, Alpha Tech, relative expansion L/L0
  • Curve arithmetic, addition, subtraction, multiplication

Applications

Application example: Glass ceramic

Dilatometry is an excellent method for determining the coefficient of thermal expansion (CTE) and the softening point of glass-ceramics.
In addition to the absolute expansion, the relative expansion and the coefficient of thermal expansion (CTE), the first derivative of the absolute expansion can also be calculated against the temperature.
The O-passage of the differentiation is the maximum of the thermal expansion and therefore the softening point of the material can be calculated exactly.

Application example: Ceramics / powder metallurgy In the production process of high-tech ceramics, it is of great interest if the sintering process can be simulated. With the optional RCS (rate controlled sintering) software package, it is possible to control the sintering process with the dilatometer according to the PALMOUR III model theory. In this application, the sintering process of ZrO2 is controlled in such a way that a final density of 100% is achieved, as the heating rate is controlled as a function of the density.
Application example: DTA measurement using a quartz sample With the L75 dilatometer and the DTA evaluation add-on, a DTA measurement with simultaneous temperature calibration can be carried out on a crystalline (SiO2) sample. During a linear heating phase of the sample, the control behavior is changed by the endothermic and exothermic reactions and corrected by the software program. A DTA curve is generated from these changes. Since, according to the literature, this transformation takes place at 574°C for SiO2, the calibration can be checked using the DTA peak.

Application example

The linear thermal expansion (ΔL) and the coefficient of thermal expansion CTE of a sample, measured in an argon atmosphere at a heating rate of 5 K / min, has its eutectic and Curie point at 736.3 °C.
The measured temperature peak of the expansion coefficient can be compared with the literature value and thus the calibration of the device can be checked.

Well informed

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