Harbor Freight Tools Thermometer 93984 User Manual

item should be stored at room temperature between -20 to +65°C (-4 to  
+149°F).  
LCD ERROR MESSAGES  
93984 Thermometer Operating  
Instructions  
The thermometer incorporates visual diagnostic messages as follows:  
SPECIFICATION  
Measurement Range  
Operating Range  
‘Hi’ or ’Lo’ is displayed when the temperature being  
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.  
-33 to +250°C (-27~482°F)  
0~50°C (32~122°F)  
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).  
Accuracy  
+/-1.0°C (1.8°F)  
(Tobj=15-35°C,Tamb=25°C)  
Accuracy  
Laser Information:  
±2% of reading or 2°C (4°F) whichever is  
3 oC)  
greater  
±
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.  
(Tobj=-33~250 oC, Tamb=23  
Resolution (-9.9~199.9°C)  
Response Time (90%)  
Distance: Spot  
‘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  
0.1°C / 0.1°F (switchable)  
1 second  
6:1 optics ratio  
Emissivity  
0.95 fixed  
Battery Life  
Typ. 40hr, min 30hr  
the unit stabilize to the working/room temperature.  
(auto power off after 15 seconds)  
CR2032 (for Laser, 2pcs required)  
22.5 x 50 x 103mm  
Battery  
Dimensions  
Weight  
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,  
65 grams including batteries  
reinsert the battery and turn on. If the error message  
remains please contact the Service Department for  
further assistance.  
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.  
CAUTION!  
BATTERIES  
1. NOT FOR FOOD SAFETY OR MEDICAL USE.  
2. CONTAINS SMALL PARTS. KEEP OUT OF  
REACH OF CHILDREN.  
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.  
There are no user serviceable parts inside the instrument. Any  
attempted repair by unqualified persons voids the warranty.  
°C OR °F MODE  
This item incorporates visual low battery indication (for the lower battery)  
as follows:  
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.  
‘Battery OK’:  
measurements  
are possible  
‘Battery Low’: battery needs ‘Battery Exhausted’:  
to be replaced,  
measurements are  
not possible  
measurements are 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.  
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’ mode. It will continuously display the temperature  
for up to 60 minutes or until the ‘Scan’ button is pressed again.  
3491 Mission Oaks Blvd., Camarillo, CA  
93011  
Visit our Web site at:  
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  
 

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