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The instrument can operate in two modes:
Stand-alone mode, described in this section
Remote mode, in which the instrument is controlled by a computer running DataView (see §4)
3.1. Making Measurements
3.1.1. Air Speed
6. Hold the sensor in the air flow. The arrow on the inside of the propeller must point in the direction of the
flow (see illustration to the left). This ensures the temperature sensor faces the incoming air, allowing it to
display an accurate value more quickly.
7. The air speed and temperature measurements are displayed on the LCD. (Wait for the measurements to
stabilize before accepting the reading.)
Always hold the sensor by its handle. Keep your fingers away from the sensor propeller.
Note that if you turn the instrument OFF, the configuration settings selected in steps 1 through 6 above will still be
in effect the next time you turn the instrument ON.
3.1.2. Air Flow (Volume)
The Model 1227 can measure air flow both with and without using an optional air flow cone. Cones are typically
used for measuring air flow through grated ventilation registers and other passages where the flow is disrupted
and distorted, resulting in inconsistent measurements. The cone can help "normalize" the air flow by directing
most or all the air towards the instrument's sensor, providing a more consistent measurement. Two models of
cones are available as accessories, one with a round 7.9" (20cm) opening, and the other with a square 13"
(33cm) opening.
Thermo-Anemometer Data Logger Model 1227
3. STANDALONE OPERATION
1. Connect the sensor to the instrument.
2.
If the instrument is OFF, press and hold down the
3. Press and hold down the
press the
button to cycle through the measurement options until VELOC
appears on the LCD.
4. While continuing to hold down
units of measure. Options are M/S (meters per second), F/M (feet per
minute), KM/H (kilometers per hour), and M/H (miles per hour). When the
desired measurement is displayed, release
5. To change temperature units, short-press
button. While holding this button down, short-
, short-press
to select the air speed
.
.
button until it turns ON.
9
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