Weidmuller SFI - 1 channel signal isolator - Handbuch (Seite 11)

11
•Calibration
general
All instruments are fully calibrated before leaving the factory and
should not need adjustment until the next scheduled calibration.
Equipmentrequirements
• A suitable Current (mA)/Voltage (V) source
• An accurate digital multimeter (accurate to 0.0 mV and ±0.1 μA)
• Flat bladed screwdriver (blade width less than .4 mm / 0.1 inch)
ZEROandSpANadjustment
The ZERo and SpAN controls are on the front panel of the transmitter.
Turn the control clockwise to increase the zero or span.
Note: ‘zero’ means the lowest point in the signal range, so for a
4-0 mA signal, ‘zero’ is 4 mA. ‘Full scale’ refers to the highest point in
the signal range.
1. Connect up the instrument, with the signal source as input and the
multimeter measuring the output.
. Set the input source to ‘zero’.
. Turn the ZERo adjustment until the output is at ‘zero’.
4. Set the input source to ‘full scale’.
. Adjust the SpAN control until the output is at ‘full scale’.
6. Recheck the ZERo adjustment.
7. Recheck the SpAN adjustment.
LK4
S2 S1