Nova-Tech 4427 User Manual

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SPECIFICATIONS

Operating Range: -22 to 122.0 °F

-30 to 50.0 °C
Measurement Range*: -22 to 185.0 °F

-30 to 85.0 °C

(*Prolonged exposure to temperatures exceeding the
operating range may damage the thermometer)

Resolution: 0.1° from 19.9° to 199.9°
1° otherwise
Accuracy: ±1° C
±0.4° C at tested points*
(*Ultra™ version)

ULTRA™ THERMOMETER ACCURACY

Ultra™ thermometers are tested at selected test
points to be within tighter than normal tolerances
to assist in providing improved accuracy. Other
points will not necessarily fall within the same
accuracy as those found at the selected test
points, but will be within an accuracy of ±1° C.

OPERATION

IMPORTANT: The intended use for this
thermometer is to monitor temperatures inside
refrigerators and freezers.

1. Press the ON/OFF

button to turn the unit on.

2. Press the °F/°C button to select the desired unit
of measure (Fahrenheit or Celsius).

3. Place the thermometer into the supplied base
and place the thermometer and base in the
desired location to be monitored.

The entire unit is completely sealed and water­proof. Do not attempt to remove the thermometer
from the bottle.

Velcro® and double sided foam
tape are supplied and may be
used to mount the thermometer
or the base side to any surface.
In a refrigerator application, this
prevents the thermometer from
taking up valuable shelf space.

MINIMUM/MAXIMUM MEMORY

1. To view the minimum temperature reached
since turning on the unit, press the MAX/MIN
button. “MIN” appears on the display to indicate
the minimum temperature recorded.

2. Press the MAX/MIN button a second time,
within 3 seconds, to view the maximum
temperature reached since turning on the unit.
“MAX” appears on the display to indicate the
maximum temperature recorded.

Note: Three seconds after pressing the MAX/MIN button,
the unit automatically returns to the current temperature
reading. (“MIN” and/or “MAX” are no longer displayed.)

3. Turn the unit off to clear the minimum and
maximum memories.

USING THE MEMORY TO MONITOR A
REFRIGERATOR/FREEZER

Following is an example of how to use the memory
to monitor the temperature inside a refrigerator or
freezer. This example is provided only as a helpful
guide and is not intended to replace existing facility
requirements or procedures.

Unit Setup Example

1. Turn the unit on.

2. Select the desired unit of measure.

3. Place the thermometer into the supplied base.

4. Place the thermometer and base inside the
refrigerator/freezer.

At this point, allow sufcient time for the bottle
thermometer to reach equilibrium with the true

current temperature inside the refrigerator/freezer.

5. Once the thermometer has reached
equilibrioum, clear the minimum and maximum
temperature memory.

Maximum Memory” section.)

(See the “Minimum/

The memory will provide a record of the single
lowest and highest temperature achieved. When
the temperatures are recorded into the manual

log, the memory will allow the user to see if the
temperature inside the refrigerator/freezer has
gone outside of the acceptable range.

Monitoring Procedure Example

Keep a notebook or spreadsheet as a manual log.

1. At the same time every day, record the
following into the manual log:

• Current Date and Time

• Current Temperature Reading

• Minimum Temperature Reading (MIN)

• Maximum Temperature Reading (MAX)

2. Once the above items have been manually
recorded, clear the minimum and maximum
temperature memory.

Maximum Memory” section.)

(See the “Minimum/

By clearing the memory each day, the minimum
and maximum temperature memory will provide a
record of the minimum and maximum temperature
that has been achieved inside the refrigerator/
freezer over the past 24 hour monitoring period.
The memory will also allow the user to see if the
temperature inside the refrigerator went outside of
the acceptable range.

ALL OPERATIONAL DIFFICULTIES

If this thermometer does not function properly for
any reason, replace the battery with a new high
quality battery (see the “Battery Replacement” sec­tion). Low battery power can occasionally cause

any number of “apparent” operational difculties.

Replacing the battery with a new fresh battery will

solve most difculties.

BATTERY REPLACEMENT

Erratic readings, a faint display, no display, or
appearing on the display are all indications that the
battery must be replaced. To replace the battery,
remove the three battery cover screws located on
the back of the unit. Remove the battery cover.
Replace the exhausted battery with a new 1.5-volt,
silver oxide, #357 size battery. Make certain the
positive (+) side is visible. Replace the battery
cover and battery cover screws. Do not over­tighten the screws as this may damage the unit.

NOTE: When replacing the battery cover, ensure

the screws are tightened securely to maintain the
unit’s water-proof seal.

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.

Control Company Cat. No. 4426 / 4427 / 4428 / 4429

Traceable® is a registered trademark of Control Company.

Ultra™ and Digital-Bottle™ are trademarks of Control
Company.

2010 Control Company. 92-4426-00 Rev. 0 01272011

©

TRACEABLE

DIGITAL-BOTTLE

THERMOMETER

INSTRUCTIONS

®

TM