8
GMC-I Messtechnik GmbH
3.2
Checking the Mechanical Zero
➭
Place the METRAmax 6 into a horizontal position.
➭
Set the range selector switch (1) to the "O" position
(OFF).
➭
The pointer has to be exactly over the bar code of the
full-scale deflection (
∞
on the black scale).
➭
Correct deviations with the adjusting screw (6) on the
rear of the meter with a screwdriver, if required.
3.3
Battery Test
➭
Set the range selector switch (1) to the "
Ω
x 1" position
(red marking).
➭
With the rotary knob (2), adjust the movement pointer
on the red scale to full-scale deflection (
∞
).
If the pointer can no longer be adjusted to full-scale deflec-
tion, or if the indication is instable after the adjustment, the
battery is exhausted and has to be replaced with a new
one, see chapter 3.1.
