5
Calibration
Zero adjust
First put on the red cap onto the modulator system. Then press in the EFM115_ReadOut
Software the “Zero Adjust” button.
If an error message appears, you should make a Zero adjust by the potentiometer (4) on
back of the unit. Adjust the measure value < 50mV and press the “ok” button at the
software.
After it start a new “Zero Adjust” until “Zero adjust o.k. appears.
Then disconnect the red cap from the modulator system.
Calibration
We recommend a new calibration every year.
Connection
Use to connect the USB – Interface a standard USB cable with “Mini-USB” plug
Calculating the electric / electrostatic charge
To calculate the charge (V) multiply the field strength (E) with the distance (A).
Example:
Measured Field strength (E) = 50 kV/m
Object-distance ==> field plate of the static-field meter = 5 cm (0,05m)
Charge [V] = field strength [E] * distance [A] (in meter)
U = E x A = 50.000 V/m x 0,05 m = 2500 V
By EFM115_ReadOut Software you can select the distance (in cm).
The Software converts measured field strength (E) by the distance to charge (V).