Fieldpiece AMN2 Manometer Accessory Head

The Fieldpiece AMN2 is a manometer accessory head for use with our modular multimeters (DMMs) and instruments. The Fieldpiece AMN2 measures gas pressure with enough resolution to measure static pressure. The Fieldpiece AMN2 includes a zero adjust and the Auto Power-Off (APO) function to conserve battery life. Disable APO for data logging. The Fieldpiece AMN2 measures pressure between -60inWC and 60inWC (inches of water column). Take static pressure measurements using the resolution mode of 0.01inWC.

Use the Fieldpiece AMN2 to measure gas pressure or static pressure. Simply connect to COM and Volts jacks on your meter using any Fieldpiece test leads with removable probe tips. For Fieldpiece "stick-style" meters, adapters and handles, slide the head directly onto the unit. Select the mVDC range on your meter. Press the ZERO Set button on the face of the Fieldpiece AMN2. ZERO while the tube is disconnected to calibrate the meter to ambient pressure. Connect the hose to the pressure source to get the gauge pressure relative to the ambient or ZERO pressure.

Field Pressure Calibration

Press and hold the ZERO Set button on the face of the Fieldpiece AMN2. Disconnect the hose from the pressure port to properly calibrate to ambient pressure. To take static pressure measurements quickly across a blower as in the diagram example, press ZERO Set button while the user is connected to the pressure source before the blower then connect to the pressure source after the blower and take the reading.

Resolution Modes (0.1 and 0.01)

There are two modes of resolution on the Fieldpiece AMN2. The 0.1 mode of the Fieldpiece AMN2 is useful for most applications. When measuring low pressures, 0.01 will likely be the best mode for meaningful testing. The most common circumstance for 0.01 mode is measuring static pressure across a blower. Only when using 0.01 mode, the display of your meter will show the true measurement X 10. So if the true measurement is -0.02, your meter will show -0.2.