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MODEL

Model 3800 High Elongation Extensometer - 33099 3800

High Elongation Extensometers

Epsilon

Technology Corp

Designed for plastics,rubber and elastomer testing,these extensometers have very long measuring ranges. Their unique design allows testing to failure and minimizes interaction with the sample. Features O

RDERING

I

NFORMATION •

May be left on through specimen failure. The main body is stationarywith only the lightweight traveling heads moving.

Model 3800 Available Versions: ANY combination of measuring range and gagelength listed below is available.

Please let us know at the time of order what type of output and connector you require.

Gage Length •

Includes high quality foam lined case.

U.S.A. Measuring Range •

Comes with an adjustable magnetic base for easy mounting.

-0100 1.000” -0200 2.000”
DESIGNATION •

Large measuring range to 20 inches (500 mm).

-050T +5.000”
METRIC -100T +10.000”
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Low cost, high accuracy elastomer strain measurement.

-025M 25.0 mm -200T +20.000” -050M 50.0 mm -125M +125 mm
S PECIFICATIONS -250M +250 mm -500M +500 mm
Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max. 3800 shown with rubber test sample. Output: Either 2 to 8 VDC, depending on model (at 10 VDCinput) or 2 to 4 mV/V, nominal, selectable at time of order

The main body of this unique extensometer remainsstationary during testing, held in position by the adjustable magnetic base included. Only the very light, small traveling heads move as the sample elongates during a test. These attach to the sample with small spring clips. Each head pulls a cord out from the extensometer as the head moves.These models use high precision, low friction potentio-meters, and, as a result, have a wide range of factory selectable outputs. The extensometer is driven by an excita- tion voltage and has output proportional to the input. They can be provided with high level outputs (approximately 2-8 VDC) or ones that mimic strain gaged devices (2-4 mV/V). When set to mimic strain gaged extensometers, the Model 3800 can be used with virtually any signal conditioning electronics designed for strain gaged sensors. The potentio-meters employ a hybrid wire wound around conductiveplastic, which provides infinite resolution and excellent long term stability. The output from the extensometer is readily interfaced with most existing test controllers, and may be directly input to data acquisition systems and chart recorders.

Linearity: ≤ 0.15% of full scale measuring range

• •

Temperature Range: 1 °C to 125 °C (34 °F to 257 °F)

Model Number 3800-________-________

Cable: Integral, ultra-flexible cable, 8 ft (2.5 m) standard Operating Force: 20 grams typical, each head Example: 3800-0100-100T: 1.0 inch gage length, +10 inches measuring range (+1000% strain), temperature range O PTIONS of 34 Ëš F to 257 Ëš F Can be provided with either: • High level outputs (approximately 2-8 VDC) • Or output that mimics strain gaged devices (2-4 mV/V nominal)2 mV/V output for use with electronics designed for strain gaged sensorsShunt calibration module is available for units configured to mimic strain gaged sensors 3800 shown with magnetic base (included). Close-up showing one spring clip thatattaches to sample. (see page 96) 2.0050.81.5038.15.25133.4 1.50 38.176.23.005.25133.4 3800 WITH 1” OR 25 MM GAGE LENGTH3800 WITH 2” OR 50 MM GAGE LENGTH Contact Epsilon for your special testing requirements. DIMENSIONS:[mm] inches 16 17