dacell DN-AM210 Manuale d'uso - Pagina 12

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voltage from the gauge.

Maximum Metallic (foil) gauge can be normally 50% ~ 75% for the stability and

good S/N (signal to noise).

Exclusive voltage should be applied for the semi conductive gauge.

To control the sensor proper voltage of the amplifier, please turn the bridge

voltage switch.

4-9. Bridge balance

Generally, when the bridge balance is too much out, you cannot carry out the

measurement for the wide range since the measurement value will be clipped.

Also you should compensate the bridge balance since a damage can be made on

hardware.

For the compensation, please press the Auto switch on the front side of amplifier

then "Auto" will calibrate the balance automatically.

Please control the volume for the rest output voltage to set Zero.

Firstly, please turn the gain switch in a clockwise to set (X1, X10, X100, X400,

X1000) gain.

Or you can turn 10-turn volume so that you can control gain (X1 ~ X11).

The gain noise is originated by input voltage. So when the input voltage is

increased, the noise will be increased accordingly. So please set the gain

according to the size of sensor.

While you are carrying out stress analysis, please compensate as following so that

you can get the precise information. (in case 1 active gauge is used)

Vout : Output voltage of amplifier

: Bridge proper voltage

: Amplifier gain

: Gauge factor

For the Transducer, please use the following formula by using the output value

you know.







Vout



