2.2
ST30 board
The ST30 board is delivered calibrated. The printed circuit board provides setting
options for setting the measuring range, calibrating the system and resetting the
measurement to zero.
Figure 2-1:
The ST30 board
1.
Jumper J1
J1 enables you to select an output signal of 0-20 mA or 0-10 V. For
example, mA is selected by setting J1 to 1.
2.
Zero potentiometer
The zero potentiometer can be used to compensate for a
dead load. When there is no weight on the scales, this enables the output signal
to be set to exactly 0.0 mA.
3.
DIP-switch
This DIP-switch enables you to change the measuring range.
4.
Gain potentiometer
The gain potentiometer enables you to adjust the number
of mV/V. This is used to calibrate the board.
2.3
Technical specifications
Type
Newton 100-S weighing
system
Newton 200-S weighing
system
Measurement
Weight
Weight
Unit
kg
kg
Measuring
principle
Change in resistance
measured by force transducer
Change in resistance
measured by force transducer
Newton weighing system
8
