Extech 392050 Operating Manual

INSTRUCTION MANUAL

Model 392050

Stem Thermometer

Congratulations on your purchase of the Extech 392050 Stem Thermometer. With proper care, this device will provide years of
reliable service.

Display 3-1/2 digit LCD with

Measurement ranges -58 to 302oF (-50 to 150oC)

Auto Off After one hour of operation

Resolution 0.1oC/F from –19.9 to 199.9oF (-20 to 150oC)

Accuracy <2oF (1oC) from –14 to 212oF (-50 to 100oC)

Sensor length 5.1” (130mm)

Sensor material Stainless steel

Operating temperature -14 to 122oF (0 to 40oC)

Battery power 1.5V LR44 cell (5000 hour approx. life)

OPERATION

Slide the ON/OFF switch to the ON position to power the meter. The LCD display will begin to indicate temperature. If the display
does not operate, replace the battery.

Slide the red sensor sheath (with convenient pocket clip for storage) off of the stainless steel stem sensor. Place the stainless
steel sensor in the area to be measured or insert the probe between 20 - 60mm (100mm max) into materials under test. Do not
force probe into solid or semi-solid materials.

o

Slide the

The Auto Shut Off feature automatically turns the thermometer off after one hour of operation. This feature extends the life of the
battery. Slide the On/Off switch to OFF and then ON again to resume operation

To replace the battery, open the battery compartment (center phillips screw turned ¼ turn counter-clockwise), and replace the
battery with an LR44 button battery. Replace the battery compartment by turning the phillips screw clockwise ¼ turn. Be careful
not to force the screw in either direction.

WARRANTY

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a
six month limited warranty applies on sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty
period, contact the Customer Service Department at [phone] ext. 210 for authorization. A Return Authorization (RA) number must be issued before
any product is returned to Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit.
This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper
maintenance or repair, or unauthorized modification. Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose
and will not be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or replacement of the product.
The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.

F/C switch to the desired units, the LCD should indicate the change.

Copyright ©

1999 Extech Instruments Corporation. All rights reserved including

the right of reproduction in whole or in part in any form.

oC/o

F degree indicator

1 392050 Ver. 1.4 06/00