Digi-Sense 20250-59 Instruction Manual

THE STANDARD IN PRECISION MEASUREMENT

User Manual

Multifunction AC/DC Voltage Tester

Model 20250-59

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Introduction

The Digi-Sense AC/DC Voltage Tester (Model 20250-59) is
versatile and easy to use. The instrument is a must-have
on your electrical tool belt. It safely measures AC/DC
voltage, polarity direction, and circuit continuity. The
instrument also provides rotary field indication and low
impedance testing. Careful use of this meter will provide
years of reliable service.

Safety Precautions

• Do not exceed the maximum allowable input range of any

function.

• Wear insulated body protective equipment rated to 690 V.

• Close attention must be paid when testing any electrical

circuits.

International Safety Symbols

This symbol, adjacent to another symbol or
terminal, indicates 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.

Meter is protected throughout by double
insulation.

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WARNINGS

In order to avoid electrical shock, valid safety regu-

lations regarding excessive contact voltages must
be followed. These include voltages exceeding
60 VDC and 25 VAC RMS.

Prior to measurement, make sure that the test
leads and instrument are in working order.

When using this instrument only the handles of

the probes may be touched – do not touch the
probe tips.

This instrument may only be used within the
ranges specified and within low voltage systems

up to 690 V.

Prior to use, make sure the instrument function
intended for use is in working order. Do not use
the instrument if one or more functions are not
working properly.

Do not use this instrument in damp conditions.
Proper operating conditions for this instrument are

-10 to 55°C, <85% RH.

This instrument should not be used if the operator’s
safety cannot be assured.

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Safe operation can no longer be assured if the instrument:

• Shows obvious damage

• Does not perform desired measurements

• Has been stored too long under unfavorable conditions

• Has been subjected to mechanical stress during transport

• All relevant statutory regulations must be adhered to

when using this instrument

Appropriate Usage

This instrument may only be used under those conditions
and for those purposes for which it was conceived. For this
reason, the safety references, the technical data including
environmental conditions and the usage in dry environ-

ments must be followed. When modifying or changing the

instrument, the operational safety is no longer ensured.
The instrument may only be opened by an authorized
service technician, e.g. for repair.

Unpacking

Check individual parts against the list of items below.
If anything is missing or damaged, please contact your
instrument supplier immediately.

1. Instrument with integrated probes

2. Carrying case

3. Two AAA batteries

4. User manual

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Meter Description

1. Handle test probe – (L1)

2. Instrument test probe + (L2)

3. Measurement point illumination

4. 2000-count LCD

5. LED for single-pole phase test

6. LED for low impedance test

7. LED for continuity

8. Low impedance switch (L2)

9. Measurement point lighting button

10. Battery case

11. Low impedance switch (L1)

Explanation of Symbols

DC DC voltage
AC AC voltage

–

DC voltage negative potential (DC)

•))) Phase display from 100 to 690 V to 50/60 Hz

Continuity test symbol when used as a single-pole phase tester

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R Rotating field display clockwise
L Rotating field display counterclockwise

Device for work to be performed with voltage present
Battery replacement symbol

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