M&C PMA 05, Manual

Page: 13 / 17

9-3.20-MD Gas sampling and gas conditioning technology 13
12.1.1 MECHANICAL ZERO POINT ADJUSTMENT
The mechanical zero point is set as follows:

Assign zero gas as described in 13.1.

Loosen fixing screw Item 4 of the photocell bracket.

Turn the adjustment screw Item 6 of the photocell clockwise or counter-clockwise until 0.0%
oxygen is indicated at the signal output;

Retighten fixing item 4 of the photocell bracket;
Illustration 5 Setting the mechanical zero point
Item 4
Item 6