Nova-Tech 4247 User Manual

SpecificationS
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%

Barometric pressure—
Range: 10.0 to 1100 hPa

(hectopascals) {1 hPa = 1 millibar}

Resolution: 0.1 up to 999.9, 1 over 999.9
Range: 7.5 to 825.0 mmHg

(millimeters of mercury)

Resolution: 0.1
Range: 0.29 to 32.48 inHg

(inches of mercury)

Resolution: 0.01
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/tp - Humidty and Temperature

◄

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

rH/dp - Humidity and Dew Point

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

baro/tp - Barometer and Temperature

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

baro/rH - Barometer and Humidity

(Barometer reading shown in the upper display, humidity 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/tP→rH/dP→bAro/
tP→bAro/rH→ rH/tP...). 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

(temperature/Dew point)

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 BaRoMeteR Unit of MeaSURe

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

2. Select the Barometer/Temperature or
Barometer/Humidity 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

(hPa→mmHg→inHg→hPa...). 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

(Min/Max Memories)

While in the Record Mode, the maximum and

minimum readings for Humidity (rH/tP or rH/dP
mode) or Barometric Pressure (bAro/tP or bAro/rH
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 rst press of the REC button will display
the maximum reading achieved since entering
the Record Mode. (“REC MAX” will appear on
the 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 button. “MAX” or

“MIN” will no longer appear on the display.

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

difculties. Replacing the batteries with new fresh
batteries will solve most difculties.

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-Certied by DNV and
ISO 17025 accredited as a Calibration Laboratory by A2LA.

TRACEABLE

HYGROMETER/

THERMOMETER/

BAROMETER/

DEW POINT PEN

INSTRUCTIONS

®

Control Company Cat. No. 4247

Traceable® is a registered trademark of Control Company.

2009 Control Company. 92-4247-00 Rev. 0 081809

©