Extron electronics ExSens Instruction Manual page 19

Instruction Manual
ExTox Transmitter ExSens(-I) and Sens(-I)
The potentiometer to adjust the zero point is marked with "Zero", the one to adjust
the sensitivity is marked with "Sens". All other potentiometer are adjusted and
sealed factory-sided. It is not allowed to adjust them.
You always have to adjust the zero point at first before you adjust the sensitivity by
applying test gas. If you do it the other way round the setting of the sensitivity of
the transmitter may be wrong.
We recommend checking the zero point finally again. This is to ensure that the
transmitter is not by mistake in alarm mode at the end of the calibration and ad-
justment process.
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