Theta Industries dilatometer, high temperature viscometer, DTA/TGA, quenching deformation dilatometer Theta Industries, Inc. Theta Industries, Inc. Logo
Dilatometer Listing

Theta Industries has been producing the finest precision dilatometers since 1966 with proven patented technology. Our dilatometers are available in standard configurations with both single pushrod and dual pushrod (differential) designs plus a constant load design that maintains an exact force on the specimen throughout the entire experiment. Dilatometers are available in the standard configurations shown below, or custom designed to customer specifications. All dilatometers are controlled through our fully automatic DilaSoft I software. Simple to set up and run with all data saved in standard ASCII format for easy import into any data analysis program. Theta's own data analysis software for the evaluation of dilatometer experiments comes complete with pre-designed graphs for all standard plots and is very easy to use yet extremely powerful.

Please see the descriptions below and fill out one of our automated on-line Inquiry Forms for a specific model dilatometer. Thank you for your interest in Theta Industries dilatometers and we look forward to hearing from you.

All dilatometers configurations feature:

  • Quick, easy setup of specimen and reference materials
  • Full software control with our DilaSoft software
  • Easy experiment setup with 100 available temperature profile segments
  • Calibration correction files for added precision in experiment data
  • Simple software calibration with a user set calibration schedule
  • Precision patented mechanical design combined with state of the art electronics

The following is a condensed listing of our standard dilatometer instruments  

Electronic Dial Gauge Dilatometer

See the flyer (in PDF format) for the new Differential Dial Gauge Dilatometer!

  • Economy pushrod dilatometer.
  • ASTM E228
  • Fast, rapid-cooling split furnace
  • Maximum specimen: 13 mm diameter x 50 mm length
  • SiO2 specimen holder
  • Type K thermocouple
  • Ambient to 1000°C
  • See the DilaSoft I V3 software description here.
Dilamatic I for operation under protective atmosphere

Measuring head with electronic gage

Measuring head with differential pushrods

Dilamatic II Dilamatic II

Protective Atmosphere Dilatometer


  • Compact single or dual pushrod dilatometer
  • Differential mode with interchangeable sensors
  • Typical specimen: 6 mm diameter x 25-50 mm length
  • Durable 1600°C SiC tube furnace
  • See the DilaSoft I V3 software description here.

Dilamatic VI Dilamatic VI

4-Specimen Dilatometer


  • Multi-specimen dilatometer
  • High volume measurements
  • Typical specimen: 6 mm diameter x 25-50 mm length
  • Two dual-specimen sensors
  • Fused silica specimen holder
  • 1000°C or 1600°C furnace
  • Available gas/vacuum specimen environment
  • See the DilaSoft I V3 software description here.

Dilatronic Dilatronic I and II

High Resolution Dilatometer


  • Typical measurements: solids, powders, glass/metal seals, Invar, glazes, ceramics, etc.
  • Accuracy to 0.5%
  • Single or dual pushrod plus available constant load
  • Dilatronic I: ambient to 1000°C, upgradable to 1200°C and -170°C
  • Dilatronic II: ambient to 1600°C
  • Minimum specimen: 3 mm cube - typical: 6 mm diameter x 25 mm length
  • Specimen environment: air, gas or vacuum
  • Overtemperature protection
  • Electronic valve control
  • Rate controlled sintering
  • Constant temperature circulator
  • See the DilaSoft I V3 software description here.
Dilatronic III

Dilatronic III

Quenching and Deformation Dilatometer
  • Phase change determination
  • Multi-tasking Windows software!
  • Rolling mill simulation
  • Heat treatment
  • CCT, ITT, TTT diagram
  • 500°C/sec cooling
  • Deformation force measurement
  • Specimen environment: 10-6 torr vacuum, helium
  • SiO2 and Al2O2 specimen holders
  • ASTM A1033 compliant

See pictures and descriptions of the actual Dilatronic III instrument.

See screen shots and descriptions of the DilaSoft III Quench Deformation Software.

Dilatronic VII

Dilatronic VII

2500°C High Temperature Dilatometer
  • Protective gas or 10-3 torr vacuum
  • Accuracy to 0.5%
  • Single or dual pushrods plus constant load
  • Tube furnace with graphite heating element
  • Pyrometer temperature measurement
  • Graphite specimen holder
  • Extensive atmosphere control options
  • Constant temperature circulator
  • Overtemperature protection
  • Electronic valve control
  • Rate controlled sintering
  • See the DilaSoft I V3 software description here.
Also see:
Dilatometer Comparison Chart Shows a comparison of our most popular dilatometers
Temperature Comparison Chart PDF format
Differential Dial Gauge Dilatometer! Instrument flyer (in PDF format)
DilaSoft I V3 software Advanced computer data acquisition control and analysis software for Dilatometer, Viscometer and DTA/TGA instruments.
Inquiry Forms Request More Dilatometer Information

Theta Industries has been the industry leader in thermal physical properties measurement and manufacturing of scientific test equipment including Dilatometer, Viscometer and DTA/TGA instruments for over 50 years. We remain dedicated to bringing our customers the finest in both software and hardware to create the most advanced thermal analysis equipment available. We offer a full range of instruments for industrial, scientific, research and education including alpah dilatometers, quench/deformation dilatometers and high temperature viscometers.

For information about the price and availability of Theta's latest instruments call, write, fax or e-mail to the address below for a prompt response. Or fill out our automated on-line Inquiry Forms right here!

Theta Industries, Inc.
26 Valley Road
Port Washington, NY 11050
Phone: 516-883-4088 Fax: 516-883-4599 E-mail:

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