Gain Equation

GAIN = Vout / ((SIG+) - (SIG-))

Sensors that incorporate bridge circuitry usually have noticeable zero offsets. This should be considered when taking measurements and determining gain. The easiest way to solve this problem is to calibrate the system while avoiding zero inputs, and correct for the zero offset in software.

Example:

If a 10lb. load cell needs to be calibrated, the suggested method is the following:

1.Make all of the required connections.

2.Place a 1lb. mass on the load cell. Record the voltage on DB- 25 pin 8 as Vouta. Pin 8 is A/D 0 on the SDAXX modules.

3.Add a second 1lb. mass onto the load cell. Record the voltage on DB-25 pin 8 as Voutb.

4.Subtract Vouta form Voutb. The difference is the voltage, Vout, which corresponds to 1lb.

5.Calculate what ((SIG+) - (SIG-)) is for 1lb. This is the voltage produced by the sensor.

6.Use the Gain Equation to calculate the exact gain of the amplifier.

7.Adjust P1, and repeat process until the desired gain is achieved.

8.Subtract Vouta from Vout. The difference is the zero offset error. The zero offset error should be included in any equation conversion equation used in your software.

8Documentation Number FBDA0797 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

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B&B Electronics FBDA manual Gain = Vout / SIG+ SIG, Example
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FBDA specifications

B&B Electronics’ FBDA series stands as a testament to innovation in the realm of data communication and networking solutions. These robust devices are designed to facilitate seamless data transmission, making them an essential component for various industrial applications. Thanks to their advanced features and technologies, the FBDA devices are suitable for demanding environments where reliability and performance are critical.

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The FBDA incorporates advanced signal processing technologies that enhance data integrity over long distances. With features like advanced error-checking mechanisms and robust anti-jamming capabilities, the FBDA ensures that data remains accurate and reliable, even in electrically noisy environments. This capability is particularly valuable in industrial settings where electromagnetic interference can often disrupt signals.

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In conclusion, B&B Electronics’ FBDA devices exemplify cutting-edge technology in data communication, combining multiple protocol support, robust signal processing, durable design, user-friendly interfaces, and energy efficiency. Their versatility and reliability make them an invaluable asset for any industrial or commercial application needing efficient data communication solutions.
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