gle/102-DySA
Dual Channel Strain Gage Dynamic Amplifier Module
Main Features • Two input channels per card, change-able over 4 groups. • Particularly suitable for vibration monitoring and modal analysis. • Selectable filter types (LP, HP) and cut-off frequencies (from 0.05 to 20kHz). • Selectable gain in 8 steps (from 1 to 5000). • Up to 12 cards can be housed in a 19” 3U rack mounting |
Overview
gle/102-DySA is a dual channel amplifier / conditioning module developed by for the measurement of dynamic signals incoming from strain-gauge transducers requiring reliable and flexible conditioning (i.e. current feeding, filtering and amplification). Thanks to its high gain and wide frequency response, gle/102-DySA conditioner is particularly suitable for applications like vibration monitoring and modal analysis. To allow measurements from a single strain gauge avoiding the completion to a bridge configuration, a current excitation method has been implemented. The user may choose between a constant electric current mode or a constant voltage with limited current mode (see the block diagram). In both cases to secure the strain gauge to the unit, just a two-wires connection is required.
The gain is selectable from 1 to 5000 choosing among the following 8 values: 1, 5, 10, 50, 100, 500, 1000 and 5000. Intermediate gains can however be set between the main steps fine tuning a 20 turns trimmer.
Block Diagram
Technical Specifications- gle/102-Dysa
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Input stage |
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Number of input channels |
2 active selectable among 4 |
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Input type |
Differential |
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Coupling |
AC (fC=0.08 Hz typ) |
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Impedance |
@ 10 MW |
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Gain |
Selectable (selector on the front panel) among: 1, 5, 50, 100, 500, 1000 and 5000 |
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Transducer supply |
1. Constant current 2. Constant voltage with limited current |
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Excitation current |
1. 0.625, 1.25, 2.5, 5, 10, 20 mA (Constant current mode) 2. 10 or 20 mA (Constant voltage with limited current mode) |
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Output stage |
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Output swing |
20 Vpp (25 Vpp max) |
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Frequency response |
Selectable (see table above) |
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Linearity |
0.1 % (Vout£10V) |
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Output impedance |
<< 50 W |
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General |
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SNR (Typ.) |
@ 70 dB @ G=1000; fC =5 kHz |
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Connectors |
Strain Gages: removable screw terminals Outputs: BNC and multi-poles standard connector |
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Power supply |
-± 15 V (+2.5 A; -1.8 A max) |
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gle/EuroRack |
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19” 3U rack mountable chassis. It can host up to 12 gle/102-DySA cards and 1 GLE/100 Diplay module |
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Power supply |
-± 15 V (+2.5 A; -1.8 A max) |
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gle/100 Display Module |
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Digital voltmeter 4 ½ digits (single channel visualization) |
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Selector for active strain gauges groups |
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RMS output of the selected channel (BNC connector on the front panel) |
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Separated BNC connector for channel calibration |
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Alarm/status led indicators: over-range, current feed, open connection |
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Due to continuous developments, specifications are subject to change without prior notice. This product is not intended for applications whose its failure to perform can be expected to cause damages to properties and/or persons and/or injury to human life.
Slider
Gallery
