Strain Measuring Equipment
Single Channel Strain Meter Model 8691
 The Model 8691 single channel direct reading digital instrument is useful in a wide range of applications for accurate measurement of strain with resistance strain gauges in ¼, ½ or full bridge configurations. Bridge Voltages and Mode are selected by push button. The strain measurement instrument is housed in a two tone case incorporating adjustable carrying handles which also acts as a means of inclining the instrument for easier bench top use.
Battery operation option makes it useful as a portable strain meter.
For more information about this product contact Tinsley
Specifications
See the table below for a run-down of this product's specifications.
Channels |
Single |
Range |
± 19999 microstrain |
Resolution |
1 microstrain |
Linearity |
0.02% of Full scale |
Gauge Resistance |
¼ bridge: - 120 Ω or 350 Ω
½ bridge: - 80 Ω upward
Full bridge: - 120 Ω upward |
Gauge Factor Range |
1 to 2.99 in 0.01 steps |
Bridge Voltage |
2V, 5V or 10V DC |
Bridge Modes |
¼ , ½ or Full bridge |
Bridge Zero |
Coarse adjustment is in 9 overlapping steps up to 10,000 µ strain. ± 2% resistance imbalance is covered
Fine adjustment is by a locking 10 turn front panel control with a range of 700 µ strain |
Zero Drift |
less than 0.5 microstrain / °C |
Gain Drift |
less than 0.005% / °C |
Input Impedance |
1000 MΩ |
Gauge Connections |
Screw terminals are at the rear and provide for ¼ , ½ or full bridge connections |
Analog Output CRO |
± 2V. Equivalent to ± 20,000 microstrain |
Frequency Response |
DC to 20 KHz |
Power |
Mains 115/240V AC. 50/60Hz. Slide switch at rear. BATTERY (optional). 2 x NiCad rechargeable batteries built-in, 8.4V, 1.2AH. Full charge of 40 hours approx. |
Dimensions |
300 x 110 x 450mm |
Weight |
5.0kg |
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For more information about this product contact Tinsley
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