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ANYLOAD A2A-D2 Amplifier Product Manual (V1810)
5.2 Zero Calibration
1. Remove weights from load cell or scale like hooks, plate, tare, etc
2. If current signal output is desired, set the output current to 4.00mA
by djusting the potentiometer ZERO
If voltage signal output is desired, set the output voltage to 10.00V
by adjusting the potentiometer ZERO
Note1: When adjusting the potentiometer to set zero, slightly rotate
clockwise or counter clockwise the potentiometer’s screw. For higher
accuracy output, it is recommended to set zero to 4.00mA or 10.00V
Note2: The tare weight shall not exceed 20% full scale capacity of scale
or load cell
Note3: When it gives output a complimentary signal (negative voltage),
remove the load first then do zero calibration.
5.3 Span Calibration
1. Apply load up to the max capacity of the load cell or scale ( max
load can be at least 80% of the max capacity of load cell or scale)
2. If current signal output is desired, set the output current to
20.00mA by adjusting the potentiometer SPAN
If voltage signal output is desired, set the output voltage to
10.00V (-10.00v) or 5.00V (-5.00V) by adjusting the potentiometer
SPAN
If the gain range is not suitable after the above 2 steps, change the
Gain range ( 4-bit DIP switch ) and recalibrate
Note1: For higher accuracy of SPAN output, it is recommended to repeat
steps in Zero Calibration and then Span calibration ( steps 5.2 & 5.3 )
multiple times until you reach your desired output
Note2: Potentiometers IN1 & IN2 shall be adjusted if the amplifier is
applied of having multiple input load cells or scales. When multiple load
cells are connected, the maximum difference in sensitivity between each
load cell shall not exceed 3%.
