9
Operating Instructions
Power ON/OFF
Turn the meter on by pressing the
POWER
button. To turn the meter off,
press and hold the
POWER
button for 2 seconds.
Note:
This meter can be powered by either six (6) "AA" batteries or AC
adapter (sold separately).
Selecting Measurement Modes
The R4000SD offers 2 types of measurement modes:
• Air Velocity/Temperature measurement
• Type K/J Thermometer measurement
1. When the meter is on, press and hold the FUNCTiON button to
toggle between "An" for air velocity/temperature and "tP" for Type
K/J Thermometer measurement modes of operation.
2. Release the FUNCTiON button to confirm selection.
Air Velocity/Temperature Measurement
1. Plug the rotating vane into the Probe Input Socket while the meter
is off.
2. Once the meter is powered up, select "An" function (see
Selecting
Measurement Modes
for details).
3. Hold the Probe Handle and face the wind direction mark on the
rotating vane (yellow dot) towards the direction of the airflow. The top
part of the display will indicate the air velocity, and the lower part of
the display will indicate the air temperature value as shown below.
m/S
continued...
REED Instruments
1-877-849-2127 | info@reedinstruments.com | www.reedinstruments.com