CEM DT-338 Operating instructions

Brand: CEM

Model: DT-338

Category: Multimeters

Type: Operating instructions

Please read this manual before switching the unit on.

Important safety information inside.

True RMS Low Current

Clamp Meter

User Manual

True RMS Low Current

Clamp Meter

User Manual

True RMS Low Current Clamp Meter User Manual

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True RMS Low Current Clamp Meter User Manual

Contents

1. Safety ................................................................................................

1-1. International Safety Symbols ........................................................

1-2. Safety Notes ................................................................................

1-3. Warnings .....................................................................................

1-4. Cautions ......................................................................................

2. Meter Description ...............................................................................

3. Specifications ....................................................................................

4. Operation ............................................................................................

4-1. AC/DC Current Measurements ......................................................

4-2. AC/DC Voltage Measurements ......................................................

4-3. Resistance Measurements ...........................................................

4-4. Diode Measurements ...................................................................

4-5. Capacitance Measurements..........................................................

4-6. Frequency measurements - AC Only.............................................

4-7. Temperature Measurements..........................................................

4-8. Battery Replacement.....................................................................

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1. Safety

1-1. 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

1-2. 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.

1-3. Warnings

• Set function switch to the appropriate position before measuring.

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

• 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.

1-4. 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. 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.

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True RMS Low Current Clamp Meter User Manual

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True RMS Low Current Clamp Meter User Manual

Input Limits

Function

A

V DC, V AC

Frequency, Resistance, Diode, Continuity ,

Capacitance Test

Maximum Input

80A DC/AC

600V DC/AC

250V DC/AC

2. Meter Description

1-Current clamp

2-Clamp trigger

3-Rotary Function swith

4-Data Hold button

5-Back Light button

6-LCD display

7-MODE select button

8-PEAK button

9-MAX/MIN button

10-Relative button

11-COM input jack

12-V Ω CAP

TEMP Hz jack12-

010 20 30 40

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True RMS Low Current Clamp Meter User Manual

4-5. Capacitance Measurements

WARNING: To avoid electric shock, disconnect power to the unit under

test and discharge all capacitors before taking any capacitance

measurements. Remove the batteries and unplug the line cords.

• Set the rotary function switch to the CAP position.

• Insert the black test lead banana plug into the negative COM jack.

Insert the red test lead banana plug into the positive V jack.

• Touch the test leads to the capacitor to be tested.

• Read the capacitance value in the display

4-6. Frequency measurements - AC Only

• Set the rotary function switch to the “Hz” position.

• Insert the black lead banana plug into the negative COM jack and the red test

lead banana plug into the positive V jack.

• Touch the test probe tips to the circuit under test.

• Read the frequency on the display.

4-7. Temperature Measurements

WARNING: To avoid electric shock, disconnect both test probes from any source

of voltage before making a temperature measurement.

• Set the function switch to TEMP.

• Insert the Temperature Probe into the negative COM and the V jacks, making

sure to observe the correct polarity.

• Touch the Temperature Probe head to the material surface you intend to measure.

Keep the probe touching the part under test until the reading stabilizes (about

30 seconds).

• Read the temperature in the display. The digital reading will indicate the proper

decimal point and value.

WARNING: To avoid electric shock, be sure the thermocouple has been removed

before changing to another measurement function

4-8. Battery Replacement

• Remove the one rear Phillips head screw

• Open the battery compartment

• Replace the Requires One 9V battery

• Re-assemble the meter

WARNING:

WARNING:

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True RMS Low Current Clamp Meter User Manual

True RMS Low Current Clamp Meter User Manual

Rev.150514

True RMS Low Current Clamp Meter User Manual

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CEM DT-338 Operating instructions

Brand: CEM

Model: DT-338

Category: Multimeters

Type: Operating instructions

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