
9. Changing the Calibration Gas – FMA 3400/3400ST Series Only The FMA 3400/3400ST Series may be calibrated for up to three gases. These gases, their corresponding flow ranges and accuracy specifications are detailed on the calibration certificate. The calibration gas required is determined by selecting the corresponding dip switch on the front panel of the display. M-4271/0707, pg. 17 of 26 FMA 3400/3400ST Series Dip Switches Dip switch 4 is allocated to the primary calibration gas. Dip switch 5