Einfluss der Verstärkung auf die Genauigkeit
No. A smaller measuring range means nothing else than a higher gain. A doubling of the gain also leads to a doubling of the noise amplitude. The "resolution" remains the same.
In an amplifier with analog output, one can still argue that the "noise distance" improves when transmitting signals with greater amplitude. However, there are many other measures to improve the interference spacing more effective on the "root":
For example, by the correct grounding ("star point" immediately before the input of the transmitter), paired twisted pipes, correct screen concept 8-page placing on, eg only at the star point or alternatively only on the sensor), separate power supplies for actuators and sensors, separate cable channels for sensor technology and actuators , a not too high input resistance on the A / D converter, etc. are assumed that the A/D converter has a resolution of 16 bits, then the noise amplitude of the output signal at the measuring amplifier is usually larger than the dissolution of the A/D converter. In a 12 bit A/D converter, the adaptation of the measuring range may mean an advantage.
In a measuring amplifier with digital interface, the argument for an enlarged interference distance is eliminated because the A/D converter is integrated in the measuring amplifier. The enlargement of the reinforcement then does not change the absolute resolution. Therefore, we offer no measuring amplifiers GSV-3USB or GSV-4USB with a measuring range of 1 mV/V.