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6.4. Determining the measuring distance using the distance indicating LED's
1. Switch the instrument on.
2. If HOLD has been switched on: Switch HOLD off.
3. Aim the measuring instrument to a surface, holding it at a distance of 3-4 cm.
(circles of distance indicating LED's are visible).
4. Move the measuring instrument towards the surface.
5. When the two circles of the distance indicating LED's form a single concentric unit, the
correct measuring distance is reached (25 mm).
6.5. IB function
The IB button is blue and prepares the fieldmeter for Ion Balance measurement. Refer to sec-
tion 8 for details.
7. Static charge measurements
7.1. Summary
The measuring accuracy depends on the size of the area to be measured. The FMX-003 has
been calibrated for 0 - 20 kV for a flat measuring area of 150 mm x 150 mm and a measuring
distance of 25 mm. Incorrect values will be displayed when measurements are conducted from
a different distance or on a smaller area.
7.2. Measurement
1. Switch the instrument on (press [POWER] button once) when sensor and distance LED's
face an uncharged object.
2. Zero the measuring instrument when the reading is not zero.
3. Hold the measuring instrument 25 mm away from the area to be measured.
4. Press the button [HOLD]
(the measured value is retained).
5. Read the measured value.
6. If the measuring instrument is in the HOLD mode: Switch HOLD off to measure again.
