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• Identify the (+) and (-) pressure ports at the top of the AXD530.
• Attach the tubing from the total pressure port of the Pitot-static
probe to the (+) port of the MicroManometer.
• Attach the tubing from the static pressure port of the Pitot-static
probe to the (-) port of the MicroManometer.
• Check to ensure that all tubing connections are tight.
Start-Up Sequence
Each time you turn the instrument on, some basic functions are tested.
The following will occur:
• All the LCD segments will turn on.
• The current software revision level will be displayed.
• The message [
] will appear.
• The last unit of measurement will be displayed along with a
measurement value.
• [
] followed by [
] will appear.
• The meter will begin to measure.
Zeroing the Instrument
Before you begin taking measurements, the AXD530 must be zeroed
by following these steps:
• Most hand-held meters using differential pressure sensors require
a warm-up time. Turn on your Alnor AXD530 a minimum of five
(5) minutes before zeroing and taking your first measurements.
• Make sure there is no airflow past a Pitot-static probe (also verify
that none of the tubing is pressurized by accidental squeezing).
• Press the ZERO key until [
] appears on the display.
The instrument will automatically zero its readings. Repeat this
procedure, if necessary, because at high resolutions the AXD530 will
read small pressure changes.
