Extech 381626 Operating Manual

Model 381626

CAUTION: Read, understand and follow all

Safety Rules and Operating Instructions in this
manual before using this product.

Pen Multimeter

This instrument is a 3200 count pen style digital
multimeter. It can be used for measuring AC or DC
voltage, AC or DC current, resistance, diodes and
continuity. It can also be used as a logic test pen. The
measuring ranges are changed automatically or can be
manually set. All measurements are displayed with 0.6
inch high characters with full parameter symbols. This
meter is easily operated and all ranges have overload
protection. It is an ideal instrument for use in the home,
factory, school and laboratory. The DMM is for indoor
use only. It is UL 1244 listed.

WARNING: USE EXTREME CAUTION IN THE USE
OF THIS DEVICE. Improper use of this device can

result in injury or death. Follow all safeguards
suggested in this manual in addition to the normal
safety precautions used in working with electrical
circuits. DO NOT service this device if you are not
qualified to do so.

EXTECH INSTRUMENTS CORPORATION warrants
this instrument to be free of defects in parts and
workmanship for one year from date of shipment. If it
should become necessary to return the instrument for
service during or beyond the warranty period, contact
the Customer Service Department at [phone] 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.

Version 1.2 5/02

SPECIFICATIONS

Ranges Resolution Accuracy
DC Voltage 300mV, 3V

AC Voltage 3, 30, 300, 500V 1mV +(1.5% reading + 8 digits) AC Freq. Response:
DC Current 30, 300mA
AC Current 30, 300mA
Resistance

Continuity Buzzer sounds for resistance less than 20 ohms (approximately)
Logic
Operating Temp. 32oF to 122oF (0oC to 50oC)
Storage Temp. -4oF to 140oF (-20oC to 60oC)
Relative Humidity <70% operating, <80% storage
Operating Altitude 2000 meters (7000ft.) maximum
Safety For indoor use and in accordance with Overvoltage Category II, Pollution Degree 2. Category II

Power supply Two 1.5V AAA batteries
Dimmensions/Wt. 1x7.5x1.9” (26x191x40mm) / 3.9oz (120gm)

30,300, 500V

300,3k,30k,300kΩ
3MΩ
30MΩ

<1V Logic low, 1V to 2V Indeterminate, >2V Logic High, 3V reference, 220kΩ input impedance

includes local level, appliance, portable equipment, etc., with transient overvoltages less than
Overvoltage Category III.

100µV

10µA
10µA

0.1 ohms +(1.5% reading + 5 digits)

+(1.5% reading + 5 digits)

(1.0% reading + 2 digits

+

+(1.5% reading + 3 digits) 40Hz to 400Hz
+(2.0% reading + 5 digits) Average responding

(2.0% reading + 8 digits)

+

(3.0% reading + 10 digits)

+

Input Impedance 10MΩ
Max Input 500V AC/DC

Overload Protection:
250VAC rms
Open ckt. V: 0.6V - 1.2V