Xylem AN400 PORTABLE ANEMOMETERS - Manual (Page 3)

AN400 V3.0 12/06 3
Operation
Connecting the Vane Cup
1. Place the cup vane on the top of the meter housing.
2. Rotate the top screw in a counter-clockwise direction
until the screw is secured.
Meter Power
1. Press the POWER button to turn the meter on. If the display does not switch on, check
that four AAA batteries are installed. To access the battery compartment, remove the
battery cover by rotating it in a counter-clockwise direction.
2. Press the POWER button to turn the meter off.
3. The meter is equipped with an AUTO POWER OFF feature. The meter automatically
shuts off after 10 minutes to conserve battery energy. To disable this feature, press the
REC button to enable the MIN/MAX function.
Measuring Air Velocity and Temperature
1. Hold the meter vertically and place the cup sensor in the air stream under test.
2. Read the Air Velocity and Temperature measurements directly on the LCD display.
Note : The temperature sensor is located in the upper right of the front panel. To avoid
affecting the temperature reading, hold the lower portion of the meter when making
measurements.
Selecting the Temperature unit of measure (
o
C/
o
F)
Press and Hold (>2 seconds) the REC/ o C/ o F key to toggle the temperature unit of
measure. The display will indicate the currently selected unit of measure.
Note: Temperature unit of measure cannot be changed if the Data Hold or Record function
is on.
Selecting the Air Velocity unit of measure
To change the unit of measure for Air Velocity measurement, press and hold (>2 seconds)
the HOLD/Unit button. The display will sequence through the measurement units. When
the desired unit of measure is displayed, release the button. The current setting will be
retained even after the meter is powered off.
Note: Unit of Measure cannot be changed if the Data Hold or Record function is on.
Data Hold
To freeze the LCD display, momentarily press the HOLD button. The 'HOLD' icon will
appear on the LCD and the reading will remain unchanged. Momentarily press the HOLD
button again to return to normal operation (the 'HOLD' icon will switch off).