Nova-Tech 3651 User Manual

TRACEABLE® ANEMOMETER/HYGROMETER/THERMOMETER/DEW POINT PEN

SPECIFICATIONS
Air Flow—
Range: 0.4 to 30.0 m/s (meters per second)
Resolution: 0.1
Range: 1.4 to 108.0 Km/h (kilometers per hour)
Resolution: 0.1
Range: 80 to 5910 FPM (feet per minute)
Resolution: 1
Range: 0.9 to 67.0 mph (miles per hour)
Resolution: 0.1
Range: 0.8 to 58.3 Knot (nautical miles/hour)
Resolution: 0.1

Temperature—
Range: 32.0 to 122.0 °F / 0.0 to 50.0 °C
Resolution: 0.1°

Humidity—
Range: 10.0 to 95.0% RH
Resolution: 0.1%

Dew Point—
Range: -13.5 to 120.1 °F / 25.3 to 48.9 °C
Resolution: 0.1°

Update Rate: 1 second

Battery: 4 each AAA (1.5V)

DISPLAY MODES

The meter may be set to the following display modes:
rH - Humidty and Temperature

(Humidity reading shown in the upper display, temperature shown in the lower display)

dP - Humidity and Dew Point

(Humidity reading shown in the upper display, Dew Point temperature shown in the lower display)

An - Anemometer and Temperature

(Anemometer reading shown in the upper display, temperature shown in the lower display)

To change the display mode, press and hold the REC button. After
approximately three (3) seconds, the display will cycle through the available
display modes (rH→dP→An→rH...). Once the desired display mode
appears, release the REC button.

OPERATION

1. Press the POWER button to turn the meter on.

2. Select the desired display mode (see the “Display Modes” section).

3. Take the desired measurements.

4. Press the POWER button to turn the meter off. To preserve battery life,
always turn the meter off when not in use.

If no button is pressed for ten (10) minutes, the meter will turn off
automatically to preserve battery life (see the “Automatic Shutoff” section).

SELECTING °F OR °C

The following procedure is used to change the temperature/dew point display
from °F to °C, or from °C to °F.

1. With the meter turned off, press and hold the HOLD button, then press
and release the POWER button.

2. Continue to hold the HOLD button until “o ” appears on the display.

3. Release the HOLD button. The meter will return to the selected display
mode and the temperature/dew-point reading will now appear in the opposite
display mode. If the meter had been displaying °F, it will now display °C,
and vice-versa.

The unit of measure selected will be the default unit of measure for both
temperature and dew point until changed.

SELECTING ANEMOMETER UNIT OF MEASURE

1. Press the POWER button to turn the meter on.

2. Select the Anemometer and Temperature display mode (see the “Display
Modes” section).

3. Press and hold the HOLD button. After approximately three (3) seconds,
the display will cycle through the available units of measure
(m/S→Km/h→FPM→mph→Knot→m/S...). Once the desired unit of
measure appears,release the HOLD button.

HOLD FUNCTION

The hold function allows the readings on the display to be “frozen” so that
they may be recorded.

1. Press and release the HOLD button to “freeze” the display at the current
reading. “HOLD” will appear at the top of the display.

2. Once the reading has been recorded, press and release the HOLD button
to return the display to the current reading. “HOLD” will no longer appear on
the display.

RECORD MODE

While in the Record Mode, the maximum and
minimum readings for Humidity (rH/dP mode) or Air Flow (An mode) will be
recorded, depending on the display mode. Record Mode records the
minimum/maximum values achieved for the upper display only. While in the
Record Mode, the Automatic Shutoff feature is disabled so that long term
monitoring may be performed.

1. Select the desired display mode (see the “Display Modes” section).

2. To enter the Record Mode, press and release the REC button. “REC” will
appear on display.

3. To recall the maximum and minimum readings achieved since entering
the Record Mode (“REC” appearing on the display), press and release the
REC button.

4. The first press of the REC button will display the maximum reading
achieved since entering the Record Mode. (“REC MAX” will appear onthe
display).

5. The second press of the REC button displays the minimum reading
achieved since entering the Record Mode. (“REC MIN” will appear on the
display).

6. To return the display to the current reading, press and release the HOLD

(Temperature/Dew Point)

(Min/Max Memories)

button. “MAX” or “MIN” will no longer appear on the display.

INSTRUCTIONS

7. To exit from the Record Mode, press and hold the REC button for 3
seconds. “REC” will no longer appear on the display. The maximum and

minimum readings are automatically cleared once the Record Mode has been
exited.

AUTOMATIC SHUTOFF (Disable)

If no button has been pressed for ten (10) minutes, the Automatic Shutoff
feature will turn the meter off to preserve battery life.

The automatic shutoff feature setting is overridden while in the Record Mode.
(See the “Record Mode” section)

To disable the Automatic Shutoff feature, place the unit into the Record
Mode (see the “Record Mode” section).

ALL OPERATION DIFFICULTIES

If this meter does not function properly for any reason, replace the batteries
with a new, high quality batteries (see the “Battery Replacement” section).
Low battery power can occasionally cause an number of “apparent”
operational difficulties. Replacing the batteries with new fresh batteries will
solve most difficulties.

BATTERY REPLACEMENT

An erratic display, faint display, no display, or a battery symbol appearing on
the display are all indicators that the batteries need replacement. The
battery cover is located at the bottom of the unit. While holding the unit
upside down, unscrew the battery cover by turning it counter-clockwise.
Remove the exhausted batteries and replace them with four (4) new AAA
alkaline batteries. Make certain to insert the new batteries with the proper
polarity as indicated by the “+” and “–” symbols in the battery compartment.
Replace the battery cover and tighten securely.

Warranty, Service, or Recalibration

For warranty, service, or recalibration, contact:

CONTROL COMPANY

4455 Rex Road

Friendswood, Texas 77546 USA

Ph. 281-482-1714 Fax [phone]

E-mail [e-mail]

www.control3.com

Control Company is ISO 9001 Quality-Certified by

DNV and ISO 17025 accredited as a Calibration

Laboratory by A2LA.

Control Company Cat. No. 3651
Traceable® is a registered trademark of Control Company

© 2009 Control Company

92-3651-00 Rev. 1 081709