Email: sales@windmill.co.uk, Tel:+44 161 833 2782, Fax:+44 161 833 2190
Strain gauges need an external excitation voltage to supply sufficient current to keep all the bridge circuits energised. Four sets of 16 screw terminals give + and - excitation and + and - signals for each of 16 bridges. Two 1 kOhm termination resistors are mounted in half bridge configuration whilst high quality 350 and 120 Ohm resistors can be provided for the completion of quarter bridges. The auxiliary channel of a 751 or 752 USB unit, is used to monitor the excitation voltage. The analogue-to-digital converter on the 751 or 752 USB unit is suitable for direct measurement of voltage imbalance, provided you choose a high resolution. When a bridge input is selected the software automatically monitors excitation voltage and performs the bridge calculation to produce a reading in microstrain. You can set a zero reference level and monitor changes relative to that level. With the 594 unit you can configure individual channels to accept any one of the following inputs.
For more information about strain, and tips on implementing a computerised strain measurement system, see the Windmill corporate site. OrderingSend Order |
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Windmill Software Ltd, PO Box 58, North District Office, Manchester, M8 8QR, UK. Email: sales@windmill.co.uk, Tel:+44 161 833 2782, Fax:+44 161 833 2190 |