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 come in standard formats with both single push-rod and dual push-rod (differential) designs plus a constant load design that maintains an exact force on the specimen throughout the entire experiment. Dilatometers can be purchased in any standard design shown below or custom ordered to the customers specifications. All dilatometers are completely controlled through our fully automatic DilaSoft I software. Easy to set up and run with the data saved in standard ASCII format for easy import into any analysis program. Theta's own 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 versions of our Dilatometers feature:

  • Easy quick setup of specimen and reference materials.
  • Full software control with our DilaSoft software.
  • Easy experiment setup with 100 available temperature profile segments.
  • Correction files for added precision in collected 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 Dilatometer instruments.  

Electronic Dial Gauge Dilatometer

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

  • Economy push rod Dilatometer.
  • ASTM E228
  • Fast, rapid cooling split furnace
  • Maximum specimen: 13mm dia., 50mm length
  • SIO 2 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 push rods

Dilamatic II Dilamatic II Dilatometer

Protective atmosphere


  • Compact single or dual push rod Dilatometer
  • Differential mode with interchangeable sensors
  • Typical specimen: 6mm dia., 25mm 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: 6mm dia., 25mm length
  • Two dual-specimen sensors
  • Fused silica specimen holder
  • 1000°C or 1600°C split furnace
  • available gas 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 push-rod plus available constant load
  • Ambient to 1000°C, upgradable to 1200°C and -170°C
  • Dilatronic II - Ambient to 1700°C or *1800°C
  • Minimum specimen: 3mm cube. Typical: 6mm dia., 25mm length
  • Specimen environment: air, gas or vacuum
  • Over temperature 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
  • Phase change determination
  • New 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
  • SiO 2 and Al 2 O 2 specimen holders
  • ASTM A1033 and ASTM A 1033 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 push-rod plus constant load
  • Tube furnace with graphite heating element
  • Pyrometer temperature measurement
  • Graphite specimen holder
  • Extensive atmosphere control options
  • Constant temperature circulator
  • Over temperature 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 (in 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 the Dilatometer, Viscometer and DTA/TGA instruments for over 40 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 Dilatometers, quench/deformation dilatometers and high temperature Viscometers...

For information about the price and availability of Theta's latest software and equipment offerings 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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