Nova-Tech 4157, 4158 User Manual

Econo Traceable® Refrigerator Thermometer Instructions

SPECIFICATIONS

Display: 1¼”-high LCD (½”digits)
Accuracy: Cat. No. 4157 ±1°C (0 to 25°C); otherwise ±

1.5°C
Cat. No. 4158 ±0.5°C at tested points
otherwise ±1.5°C

Resolution: 0.1°F or °C
Temperature Range: 14.2 to 131.0°F (–9.9 to 55.0°C)
Readings: display updates every 30 seconds
Function: temperature
Accessories: Always-Hold™ suction cup, extra battery,

Velcro®

Size: 1 x 2½ x ½”
Weight: ½ oz.

Note: Before Using

1. Unit is shipped with battery installed. Unit is ON and displaying
current ambient temperature.

2. If display is not showing temperature, replace battery with extra one
supplied. (See Battery Replacement.)

SETTING FAHRENHEIT (°F) OR CELSIUS (°C): MODE

1. Hold unit in one hand with back facing up. Slightly fold back suction
cup. MODE opening is visible on lower left side of unit back.

2. With other hand, insert tip of bent paper clip in MODE opening.
Press paper clip firmly and hold for one second. Remove paper clip.
Reading will change from °F to °C or °C to °F.

Note: SET opening on back of unit has no function on this model.

MOUNTING UNIT
Note: Because refrigerators have varying internal air temperatures,

unit should be placed as close as possible to materials being
observed.

1. Free-standing – unit may be set on any flat surface.

2. Suction cup – wet suction cup with warm water. Apply to any clean
surface.

3. Velcro® – remove paper cover from one piece of Velcro®. Press
Velcro® firmly onto suction cup. (Suction cup will flatten.) Remove
tape from other Velcro® piece. Press Velcro® firmly onto selected
surface for mounting unit. Press unit firmly in place.

Note: Temperatures above 100°F are indicated by “100” at the top of
the display.

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 ±1.5°C.

ALL OPERATIONAL DIFFICULTIES
If this unit does not function properly for any reason, replace battery
with fresh 1.5 volt silver-oxide battery. (See Battery Replacement.) Low
battery power can occasionally cause any number of “apparent”
operational difficulties. Replacing battery with a fresh one solves most
difficulties. Equivalent battery replacements are 1.5 volt silver-oxide
battery. Replacement battery Cat. No. 1102.

Note: If unit is exposed to rapid changes in temperature, moisture may
condense on internal electronic parts or on display. (Symptoms include
erratic, incorrect, or no readings on display.) To dry out, open unit by
following steps 1,2 in Battery Replacement. Allow to dry at room
temperature for 24 hours. Close unit by following steps 6,7 in Battery
Replacement.

Note: If unit is operating in temperatures below recommended range,
liquid crystal display may freeze.

BATTERY REPLACEMENT

1. To open unit, grasp suction cup and turn counter-clockwise until it
can be removed or use a screwdriver to remove the screw.

2. Remove BACK CASE.

3. Hold unit in one hand.

4. With other hand, use tip of paper clip to put pressure on top of
battery. Press firmly on top of battery until it slides out.

5. With +side facing up, slide fresh battery in place.

6. Replace BACK CASE.

7. Grasp suction cup. Replace screw in opening in center of BACK
CASE. Turn suction cup by hand, clockwise or use a screwdriver
until it is firmly in place.

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.

Cat. No. 4157/4158

Econo Traceable® Refrigerator Thermometer Instructions

92-4157-00

Rev. 2 072607

Traceable® is a registered trademark of Control Company

2007 CONTROL COMPANY

©