Extech Instruments 38387 User manual

User’s Guide

600A AC Clamp Meter

Model 38387

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 38387 Product Info Page

Safety

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

Double insulation

A UL mark does not indicate that this product has been evaluated for

the accuracy of its readings.

SAFETY NOTES

•Do not exceed the maximum allowable input range of any function

•Do not apply voltage to meter when resistance function is selected.

•Set the function switch OFF when the meter is not in use.

•Remove the battery if meter is to be stored for longer than 60 days.

WARNINGS

•Set function switch to the appropriate position before measuring.

•When measuring volts do not switch to current/resistance modes.

•Do not measure current on a circuit whose voltage exceeds 240V.

•When changing ranges using the selector switch always disconnect

the test leads from the circuit under test.

•Do not exceed the maximum rated input limits.

CAUTIONS

•Improper use of this meter can cause damage, shock, injury or

death. Read and understand this user manual before operating the

meter.

•Always remove the test leads before replacing the battery or fuses.

•Inspect the condition of the test leads and the meter itself for any

damage before operating the meter. Repair or replace any damage

before use.

•Use great care when making measurements if the voltages are

greater than 25VAC rms or 35VDC. These voltages are considered

a shock hazard.

•Remove the battery if the meter is to be stored for long periods.

•Always discharge capacitors and remove power from the device

under test before performing Diode, Resistance or Continuity tests.

•Voltage checks on electrical outlets can be difficult and misleading

because of the uncertainty of connection to the recessed electrical

contacts. Other means should be used to ensure that the terminals

are not "live".

•If the equipment is used in a manner not specified by the

manufacturer, the protection provided by the equipment may be

impaired.

Specifications

Function Range and Resolution Accuracy (of reading)

199.9 ACAAC Current

600 ACA

AC Voltage 600 VAC

± (1.5% + 4 digits)

@ 50/60Hz

DC Voltage 600 VDC ± (1.0% + 1 digits)

Resistance 1999 Ω± (1.0% + 2 digits)

Jaw size Opening 1.3" (33mm) approx.

Display 3-1/2 digits (2000 counts) LCD

Continuity Audible tone < 40Ωapprox.

AC bandwidth 40Hz to 400Hz

Safety compliance IEC 1010-1 and VDE 0411

Operating Temperature 32 to 122oF (0 to 50oC)

Storage Temperature -4 to 140oF (-20 to 60oC)

Over voltage Cat II 600V

Overload protection 250V AC/DC Spark Gap protection;

PTC protection for Ωrange to 250V

Battery 9V battery (IEC 6F22)

Auto Power OFF After 10 minutes of inactivity

Dimensions/Weight 8x3.2x1.7" (204x80x43mm)/0.62 lbs. (281g)

Safety For indoor use and in accordance with

Overvoltage Category II, Pollution Degree 2.

Category II includes local level, appliance,

portable equipment, etc., with transient

overvoltages less than Overvoltage Cat. III.

Meter Description

1. Transformer jaws

2. Data Hold button

3. Peak Hold button

4. LCD Display

5. COM Input Terminal

6. Jaw opening trigger

7. Function select switch

8. Voltage, Resistance Input Terminal

Operation

NOTICES: Read and understand all warning and precaution

statements listed in the safety section of this operation manual prior to

using this meter. Set the function select switch to the OFF position

when the meter is not in use.

AC/DC Voltage Measurements

1. Insert the black test lead into the negative COM terminal and the

red test lead into the positive Vterminal.

2. Set the function switch to the AC or DC voltage

range position (ACV or DCV).

3. Connect the test leads in parallel to the circuit

under test.

4. Read the voltage measurement on the LCD

display.

AC Current Measurements

WARNING: Ensure that the test leads are

disconnected from the meter before making current

clamp measurements.

1. Set the Function switch to the 600 or 200A range.

If the range of the measured is not known, select

the higher range first then move to the lower

range if necessary.

2. Press the trigger to open jaw. Fully enclose one

conductor to be measured.

3. The clamp meter LCD will display the reading.

Resistance and Continuity Measurements

1. Insert the black test lead into the negative COM terminal and the

red test lead into the Ωterminal.

2. Set the function switch to the Ω•))) position.

3. Touch the test probe tips across the circuit or component under

test. It is best to disconnect one side of the device under test so the

rest of the circuit will not interfere with the resistance reading.

4. For Resistance tests, read the resistance on the LCD display.

5. For Continuity tests, if the resistance is < 40Ω, a tone will sound.

Data Hold

To freeze the LCD meter reading, press the data hold button. The data

hold button is located on the left side of the meter (top button). While

data hold is active, the DH display icon appears on the LCD. Press the

data hold button again to return to normal operation.

Peak Hold

To hold the highest reading on the LCD, press the peak hold button. The

peak hold button is located on the left side of the meter (bottom button).

The meter reading will not change as readings change, rather it will only

display the highest reading encountered since the peak hold button was

pressed. Press the peak hold button again to return to normal operation.

Maintenance

WARNING: To avoid electrical shock, disconnect the meter from any

circuit, remove the test leads from the input terminals and turn OFF the

meter before opening the case. Do not operate with open case.

Cleaning and Storage

Periodically wipe the case with a damp cloth and mild detergent; do not

use abrasives or solvents. If the meter is not to be used for periods of

longer than 60 days, remove the battery and store it separately

Battery Replacement

1. Remove the three rear Phillips head screws

2. Open the battery compartment

3. Replace the 9V battery

4. Re-assemble the meter

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 38387 Product Info Page

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