MICRO-EPSILON NLS3181, Instruction Manual

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X9751115-A030094MSC 15
The trimmer potentiometers
Zero and Gain have 24
turns! A slight click is audi-
ble at the end positions.
Operation
5.1 Control Elements
• Remove the cover from the controller by loosening the four screws in the
cover
There are two trimmer potentiometers on the demodulator board (Fig. 5.2) for
adjusting
- Zero and
- Gain
The measuring signal can be adjusted in the range from -5 VDC to +5 VDC at
a max. output current of 10 mA. The output is temporarily short-circuit-proof.
The output impedance is less than 10 ohms.
5.2 Calibration
Every measuring channel must be calibrated for the installation environment
and the target prior to measuring. The two trimmer potentiometers are set at
two distance points by a reference norm for calibration.
• Turn the trimmer potentiometer with a screwdriver in a clockwise direction to
effect a positive change in the output voltage
• Turn the trimmer potentiometer with a screwdriver in counterclockwise direc-
tion to effect a negative change in the output voltage
• Use the original measuring environment for calibration where possible. Si-
mulate the measuring environment if this is not possible.
Fig. 5.2: Potentiometers on the demodulator board
Power,
output
Gain Zero
Sensor