Extech Extech DV40 Manual

User’s Guide DV40 Non-Contact

Voltage Detector and IR Thermometer

Safety

WARNING: Risk of Electrocution. Before use, always test the Voltage Detector

WARNING: Risk of Electrocution. Keep hands and fingers on the body of the

CAUTION: Read, understand and follow Safety Rules and Operating

Do not attempt to repair this unit. There are no user serviceable parts.
Do not expose the unit to extreme temperatures or high humidity
Do not use the unit if it is wet or damaged
Do not apply more than the rated voltage between the probe tip and ground.
Do not operate with the case open

BATTERY INSTALLATION

1. Access the battery compartment by gently pressing the pocket

2. Insert three LR44 button batteries (observe polarity).

3. Replace and latch the cover
NOTE: If your meter does not work properly, check the battery to

Warranty

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) 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 or visit our website at
www.extech.com
request an RA number). 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.

on a known live circuit to verify proper operation

probe and away from the probe tip

Instructions in this manual before using this product.

This symbol, adjacent to another symbol or terminal, indicates the user
the user must refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present

Double insulation

clip release latch and sliding the cover down.

make sure that it still good and that it is properly
inserted.

(click on ‘Contact Extech’ and go to ‘Service Department’ to

Operating Instructions

1. .IRT measure button

2. LCD display.

3. IRT port

4. Battery compartment

5. NCV detector

6. NCV indicator cone

7. NCV measurement button

8. Battery compartment release latch.

AC VOLTAGE DETECTION

WARNING: Risk of Electrocution. Before use, always test the Voltage Detector

1. PRESS and HOLD the NCV button.

2. The cone tip will light up for approximately 2 seconds and then turn off,

3. Place the probe tip near the hot conductor or next to the hot side of the

4. If AC voltage is present, the detector cone will produce a steady constant

NOTE: The conductors in electrical cord sets are often twisted. For best results, rub

NOTE: The detector is designed with high sensitivity. Static electricity or other

IR TEMPERATURE MEASUREMENTS

NOTE: The IR thermometer has a distance to target ratio of 1:1. For the most

1. Point the IR sensor toward object to be measured,

2. PRESS and HOLD the IR button.

3. The meter will turn ON, “SCAN” will flash in the display and the measured

4. Release the MEASURE button, “HOLD” will appear and the last measured

Displaying °F or °C

on a known live circuit to verify proper operation

ensuring that the LED is working correctly. Continue holding the NCV button.

electrical outlet.

glow.

the probe tip along a length of the cord to assure placing the tip in close proximity
to the live conductor.

sources of energy will randomly trip the sensor. This is normal operation.

accurate readings position the meter as close as possible to the target..

surface temperature will appear in the display.

value will remain in the display until the meter turns off (approximately 30
seconds).

The temperature units selection switch
is located in the battery compartment.

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Specifications

IR Thermometer

Range -20 to 445°F (-30 to 230°C)
Resolution 0.1°F/C
Emissivity settings 0.95 fixed
Distance to Target Ratio 1:1
Accuracy

-8 to 445°F (-10 to 230°C)

-20 to -8°F (-30 to -10°C) ±8ºF/4ºC

Non-Contact Voltage Detector

Voltage Sensitivity 50V to 1000V AC
Bandwidth 50/60Hz
Detection distance 1” @ 105V

General

Display 9999 count LCD display
Operating Temperature 32 to 122°F (0 to 50°C)
Operating Humidity 10% to 80% RH
Power Supply 3 LR44 or A76 button batteries
Weight 1.25oz. / 35.5g
Storage Temperature 14 to 140°F (-10 to 60°C)
Altitude Operating below 2000 meters
Dimensions/Weight 6.25x1” (159x25mm) / 1.25oz / 35.5g
Safety F or indoor use and in accordance wit h

All rights reserved including the right of reproduction in whole or in part in any form

Copyright © 2008 Extech Instruments Corporation

± 2.0% of reading or ±4ºF/2ºC
whichever is greater

Overvoltage Category IV-600V, Category
III 1000V, Pollution Degree 2.

Back to the Extech DV40 Product Info Page

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

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