MODEL 3648 High Temperature, Low Strain Capacitive Extensometers

The 3648 is designed for high temperature, low strain material testing applications. It is a water cooled capacitive device that features a slide bracket for easy mounting and low specimen contact force. Its low strain capabilities complement our comprehensive line of high temperature furnace extensometers.

http://www.epsilontech.com/3648.htm  

This extensometers use a high temperature capacitive sensor in combination with an innovative design to achieve high accuracy strain measurements in low measuring ranges not possible with other high temperature extensometers. They mount on a slide bracket (included) that can attach to the load frame of your test system; optional load frame mounting brackets are available. The standard temperature version (to 1200 °C) is supplied with high purity alumina rods. The high temperature option is furnished with alpha grade silicon carbide rods. Rods are made to order to the length required for your furnace. These units are made to order in many different gauge lengths and measuring ranges.

The extensometer comes with the Model 3603 signal conditioner. The output is an analog DC voltage, factory calibrated with the extensometer to 0 to ±10 VDC typically.

They are readily interfaced with most existing test controllers, and may be directly connected to data acquisition systems and chart recorders. Bringing the signal into a spare DC input channel (or external input) on the test controller allows the extensometer to be used for strain controlled tests like low cycle fatigue.

Features

• May be left on through specimen failure.
• Designed for those applications requiring ±0.10 inches (±2.5 mm) full scale measuring range or less. For applications requiring greater measuring ranges, please see Model 3549.
• Capacitive signal conditioner and power supply included. Provides high level DC voltage output with lowe noise. Easily interfaced to test controllers, data acquisition boards and chart recorders.
• Shipped fully calibrated with electronics (traceable to NPL (UK)) with user specified voltage output.
• All models can measure in both tension and compression and can be used for cyclic testing.
• Mechanical overtravel stops in both directions.
• All standard units meet existing ASTM class B-1 and ISO 9513, class 0,5 requirements for accuracy.
• Includes high quality foam lined case and a spare set of ceramic rods.
• Innovative slide mount allows the extensometer to engage the specimen once the test temperature has been achieved.
• Low strain range, high resolution versions available.

 Model 3648 Available Versions: please contact Epsilon to discuss your requirements.

NEW Calibration Reference

VREF Modules

10V calibration reference for high level devices.

Like the shunt calibration module for strain gaged extensometers, the VREF module is used to transfer Epsilon's calibration to a customer's electronics.

VREF works with all of Epsilon's high temperature capacitive extensometers, and is compatible with both the 3603 and 3604 signal conditioners. The high precision 10V reference used in the VREF module ensures calibrations are spot on every time. One VREF module may be used to calibrate several high level output extensometers by using the 10V extension value for each extensometer.

Calibration requires only these two simple steps:

1. With the VREF module connected in place of the high level signal conditioner, first set the zero position with VREF set to 0V.
2. Then switch VREF to 10V and calibrate the full scale position. Reconnect the signal conditioner and you're ready to go.

That's all it takes.

http://www.epsilontech.com/VREF.htm

HAPPY HOLIDAYS
from
EPSILON TECHNOLOGY

Now Available:

Model 3590VHR Extensometer Calibrator with Stand Alone Display

Epsilon's very high resolution calibrator features 0.8 microinches (20 nanometers) resolution and has 2 inches (50 mm) of measuring range. The 3590VHR calibrator meets the accuracy and resolution requirements for ASTM E83 Class B-1 for 6 mm gauge length and greater extensometers and ISO 9513 Class 0,5 over the full measuring range of the calibrator.

As a result of customer requests, we have interfaced a digital display with the 3590VHR calibrator as an option in lieu of the standard netbook. We have added this display option to our product line to make it available to all of our customers. Additional information is available on the 3590VHR webpage.  http://www.epsilontech.com/3590VHR.htm

• New Epsilon ad in Engineering Maintenance Solutions magazine
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New Product Guide Available

Epsilon Technology has recently published a guide to assist in the purchasing of both Axial and High temperature extensometers.   This guide provides an easy to read comparison of the primary features of each extensometer.  These guides will now be included with our catalog.  If you would like to receive a guide, please visit our website at http://epsilontech.com/feedback.htm  and request a catalog or comment that you only want a guide. 

A significant advancement in externally mounted, furnace extensometers.

Introducing Epsilon’s newest Model:  The 3549 High Temperature Hot Mountable Furnace Extensometer.    The 3549 introduces many new and innovative features that help improve productivity, ease of use, and accuracy with both static testing applications (tension and compression testing) and long term testing (low cycle fatigue and creep). The overall design significantly reduces any influence from normal external vibrations. The gauge length for the 3549 is automatically set prior to mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached.  This unit also incorporates a new feature that allows the user to precisely set the contact force against the test specimen. This allows for even and repeatable contact force, limiting contact force induced errors. This extensometer mounts on a slide bracket (included) that can attach to the load frame of your test system.  Mounting brackets may be integrated with the furnace cut-out, and Epsilon can also provide load frame mounting brackets to fit your test frame.  This new extensometer is designed to meet the stringent requirements of strain-controlled testing as prescribed in ISO 6892.  It has temperature options available for use to 1600 °C.  The Model 3549 extensometers can be used on any load testing systems.  This model replaces  the 3548 and 3548HI .  For more information:  http://www.epsilontech.com/3549.htm