dacell DN-AM210 Руководство пользователя - Страница 11

Просмотреть онлайн или скачать pdf Руководство пользователя для Усилитель dacell DN-AM210. dacell DN-AM210 14 страниц. Dynamic strain amplifier

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If you use a long wire, please use a balanced leading line so that you can

minimize the noise.

4-6. Notes for Static measurement

You must make sure that the cable resistance between each gauge lead wire is

regular. If it is not, the measurement value can be changed by the surrounding

temperature. Please pay your special attention for this point.

Please carry out the following procedures.

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You must us 3-line for Quarter Bridge.

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To minimize the effect by the temperature change, it is ideal to put all the used

lead wire in the same wire bunch.

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To build the precise data when you use a long wire, please do the

compensation considering the resistance of lead.

(Example : The thickness, length of the wire and its proper resistance etc)

Output  10V can read the voltage output value as in oscilloscope, volt meter

and A/D board on the output connector.

Sometimes when you do the stress analysis, the high proper voltage to the active

gauge might be required. When the proper voltage is high, the output will be big

so that you do not have to amplify too much. But when the high voltage is applied

to the gauge with low resistance, an error in measurement can be occurred since

the joule heat might be generated on the gauge. So the most suitable condition

should be found since the resistance on the gauge and proper voltage are very

important. In addition to the gauge with high resistance (over 350Ω) or the long

and wide gauge, you can increase the proper voltage at the place where the

heat-sinking (aluminum etc) easily can be done.

Please avoid increasing the proper voltage with the gauge below 120Ω or at the

place where the heat-sinking cannot be done such as plastic.

Normally the gauge proper voltage should be 10%~100% of the recommended