Harbor Freight Tools 93984 User Manual

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93984 series thermometer is a non-contact infrared thermometer. Simply
aim the thermometer at the target and press the ‘Scan’ button to display
the surface temperature.

Laser Information:
By partially pressing the ‘Scan’ button, the device will begin to
measure the temperature of the target. When the ‘Scan’ button is
completely depressed, the laser will operate.

CAUTION!

1. NOT FOR FOOD SAFETY OR MEDICAL USE.

2. CONTAINS SMALL PARTS. KEEP OUT OF
REACH OF CHILDREN.

°C OR °F MODE

To change from ‘°C’ to ‘°F’ or from ‘°F’ to ‘°C’, first turn the instrument on
by pressing the ‘Scan’ button. Then press the ‘Mode’ button four times,
the ‘°C’ or ‘°F’ symbol will flash. Press the ‘Scan’ button to change to
scale, then press the ‘Scan’ button to confirm the mode.

MINIMUM OR MAXIMUM MODE

To utilize the minimum or maximum mode: first turn the instrument on by
pressing the ‘Scan’ button. Then press the ‘Mode’ button once for
minimum or twice for maximum function. The ‘MIN’ or ‘MAX’ icon will
flash, then press the ‘Scan’ button to confirm the minimum or maximum
mode. The unit will display the minimum or maximum reading only.

LOCK MODE

The lock mode is particularly useful for continuous monitoring of
temperatures.
To utilize the unit’s LOCK mode: first turn the instrument on by pressing
the ‘Scan’ button, then press the ‘Mode’ button three times for the lock
mode function. The lock icon will flash, then press the ‘Scan’ button to
confirm the lock ‘Scan’ mod
for up to 60 minutes or until

e. It will continuously display the temperature

the ‘Scan’ button is pressed again.

LCD ERROR MESSAGES

The thermometer incorporates visual diagnostic messages as follows:

‘Hi’ or ’Lo’ is displayed when the temperature being

「

「

「 」

「

「

」

measured is outside of the range of the instrument,
‘Hi’ when higher than +250°C (482°F) and ‘Lo’ when
lower than –33°C (-67°F).

」

‘Er2’ is displayed when the unit is exposed to rapid
changes in the ambient temperature. ‘Er3’ is
displayed when the ambient temperature EXCEEDS
0°C (32°F) OR +50°C (122°F). In both cases you
should allow plenty of time (minimum 30 minutes) for

」

the unit stabilize to the working/room temperature.

For all other error messages it is necessary to reset
the unit. To reset it, turn the instrument off, remove
the battery and wait for a minimum of one minute,
reinsert the battery and turn on. If the error message

」

remains please contact the Service Department for
further assistance.

BATTERIES

The unit has two separate batteries. The battery closer to the side of the
laser beam output is for laser operation only. The other battery is
designated for temperature measurements. The unit can still measure
temperature properly, even without the laser battery.

This item incorporates visual low battery indication (for the lower battery)
as follows:

‘Battery OK’:

measurements

are possible

‘Battery Low’: battery needs

to be replaced,

measurements are possible

‘Battery Exhausted’:

measurements are

not possible

BATTERY REPLACEMENT

When the ‘Low Battery’ icon indicates the battery is low, the battery
should be replaced immediately with a CR2032 lithium cell. The battery
is located under the twist cover at the rear of the thermometer. Please
note: It is important to turn the instrument off before replacing the battery
otherwise the unit may malfunction.

Dispose of used battery properly and keep away from children.

STORAGE & CLEANING

The sensor lens is the most delicate part. The lens should be kept clean
at all times, care should be taken when cleaning the lens using only a
soft cloth or cotton swab with water or medical alcohol, allowing the lens
to fully dry before using. Do not submerge any part of this item. This

item should be stored at room temperature between -20 to +65°C (-4 to
+149°F).

SPECIFICATION

Measurement Range -33 to +250°C (-27~482°F)
Operating Range 0~50°C (32~122°F)
Accuracy

(Tobj=15-35°C,Tamb=25°C)

Accuracy

(Tobj=-33~250 oC, Tamb=23±3 oC)

Resolution (-9.9~199.9°C) 0.1°C / 0.1°F (switchable)
Response Time (90%) 1 second
Distance: Spot 6:1 optics ratio
Emissivity 0.95 fixed
Battery Life Typ. 40hr, min 30hr

Battery CR2032 (for Laser, 2pcs required)
Dimensions 22.5 x 50 x 103mm
Weight 65 grams including batteries

+/-1.0°C (1.8°F)

±2% of reading or 2°C (4°F)

greater

(auto power off after 15 seconds)

whichever is

EMC/RFI

Readings may be affected if the unit is operated within radio frequency
electromagnetic field strength of approximately 3 volts per meter, but the
performance of the instrument will not be permanently affected.

There are no user serviceable parts inside the instrument. Any
attempted repair by unqualified persons voids the warranty.

3491 Mission Oaks Blvd., Camarillo, CA
93011
Visit our Web site at:

http://www.harborfreight.com