Taking Measurements; Data Hold; Viewing The Measurements; Selecting Wind And Temperature Units - Spectrum Technologies 3141 Product Manual

Taking Measurements

Hold the meter and target the air source from the rear of the unit.
Hold the meter at arm's length, away from your body.

Data Hold

Press the HOLD/ON/OFF button to freeze the display. "HLD" will
appear on the LCD, and the current reading will be displayed until
the HOLD/ON/OFF button is pressed again.

Viewing the Measurements

Press the UNIT/MODE button to switch between:
Wind Speed - selected speed units will display at the top
Maximum Wind Speed - selected units and MAX will display
Temperature - °F or °C will display on the right
Relative Humidity (3145A) - % will display on the right
Wind Chill Index - WCI and °F or °C will display
Dew Point (3145A) - DP and °F or °C will display
Wet Bulb Temp (3145A) - WBT and °F or °C will display
External Temp Probe will always display dashes and EXT

Selecting Wind and Temperature Units

Press the UNIT/MODE switch to display either the Temperature or
Wind Speed. Then press the HOLD/ON/OFF and UNIT/MODE
buttons simultaneously to change the units of measurement.
In wind mode, you can choose between BF (Beaufort), FT/M (feet/
minute), M/H (miles per hour), KMH (kilometers/hour), M/S (meters/
second), and KNT (knots).
In temperature mode, you can choose between °F and °C.

Default Display

The meter initially defaults to displaying Wind Speed when it is
turned on. After that, whatever was last displayed before powering
off is what will be displayed when the meter is turned on.

Battery Replacement

Turn off the meter, then open the battery cover, using a coin to turn
the cover counter-clockwise. Put the battery (CR2032) into the
battery compartment (3145A: between the two metal contacts) with
the "+" side out. Place the battery cover back on and turn the cover
clockwise with a coin to lock the cover.
CAUTION
The meter is accurate at low and mid-range air speeds. Consistent
use at high speeds, such as from the window of a fast-moving car,
will damage the impeller's bearing and reduce accuracy.