Lutron Electronics CM-9942G Operation Manual

Green power, hybrid power

SMART

CLAMP METER

Model : CM-9942G

Your purchase of this

SMART CLAMP METER

marks a step forward for

you into the field of

precision measurement.

Although this CLAMP

METER is a complex and

delicate instrument, its

durable structure will allow

many years of use if

p r o p e r o p e r a t i n g

techniques are developed.

Please read the following

instructions carefully and

always keep this manual

within easy reach.

OPERATION MANUAL

Caution Symbol

Caution :

* Risk of electric shock !

Caution :

* Do not apply the overload

voltage, current to the input
terminal !

* Remove test leads before open

the battery cover !

* Cleaning - Only use the dry

cloth to clean the plastic case !

Environment Conditions

* Installation Categories III 600V.

* Pollution Degree 2.

* Altitude up to 2000 meters.

* Indoor use.

* Relative humidity 80% max.

Equipment protected throughout

by double insulation or reinforced

insulation.

TABLE OF CONTENTS

1. FEATURES..........................................................................

1

2. SPECIFICATIONS................................................................

2

2-1 General Specifications............................................

2

2-2 Electrical specifications.............................................

4

3. FRONT PANEL DESCRIPTION..................................................................

6

3-1 Current Sense Jaws........................................... 6

3-2 Trigger .............................................................. 6

3-3 Display................................................................

6

3-4 Power On/Off button.......................................... 6

3-5 Hold button....................................................... 6

3-6 Hz button........................................................... 6

3-7 Function slide switch .......................................... 6

3-8 V/Ω terminal ......................................................

6

3-9 COM terminal .................................................. 6

3-10 Handle of power generator................................ 6

3-11 Power type switch ( G/B switch )...................... 6

3-12 Battery compartment/cover................................ 6

4. POWER TYPE SELECTION........................................ 7

4-1 Power supply from the generator ( Green

power supply ) ....................................................

7

4-2 Power supply from the battery................................

8

5.

MEASURING PROCEDURE.......................................................................

8

5-1 precautions & preparations for measurement...... 8

5-2 Power management.............................................

8

5-3 Symbols & units of display.....................................

9

5-4 AC Current Measurement ......................................

10

5-5 Voltage ( ACV/DCV ) measurement.........................

10

5-6 Resistance measurement......................................

11

5-7 Continuity, Diode measurement..............................

11

5-8 Capacitance Measurement........................................

13

5-9 Frequency measurement....................................................

14

5-10 Auto power off.....................................................................

14

6.

MAINTENANCE.......................................................................

14

7.

OPTIONAL ACCESSORIES & ADAPTERS ..................................................

16

8. PATENT.....................................................................

16

9. THE ADDRESS OF AFTER SERVICE CENTER.....................

17

1. SPECIFICATIONS

* Green power, battery is no need, power supply from

the handy generator, operate the generator 30 to 60
seconds will offer 15 to 20 minutes energy typically.

* Hybrid power, meter's power also can supply by the

battery,

* Green power internal charge system use the Super

charge capacitor, fast charge time and high reliability.

* Meet CAT III-600 V.
* 6000 counts A/D, high resolution.
* ACV, ACA, DCV, ohms, continuity, Hz, Capacitance,

Diode, Data hold.

* Smart function, Auto range.
* Smart operation, Build in 4 intelligent function :

" A ", " Ω ", " V ".

* " A " function can measure ACA with auto range.
* " V " function can select ACV, DCV automatically with

auto range.

* " Ω " function can select the Resistance , Diode,

Continuity beeper, Capacitance automatically with auto
range.

* Data hold function for ACA measurement.
* Auto shut off is available to save battery life.
* 10 M ohm impedance for voltage circuit.
* Built-in overload protection for most ranges.
* LSI circuit provides high reliability and durability.
* Patent.
* Uses durable, long-lasting components, enclosed in

strong, light weight ABS-plastic housing.

* Full line optional adapters : Clamp adapter,

Tachometer adapter, Pressure adapter, Humidity
Adapter, Sound level adapter, Anemometer adapter,
Light adapter, EMF adapter.

1

2. SPECIFICATIONS

2-1 General Specifications

Green power * Green power, battery is no need,
and power supply from the handy
Hybrid power generator, operate 30 to 60

seconds the generator will offer 15
to 20 minutes energy typically.
Green power internal charge system
use the Super charge capacitor, fast
charge time and high reliability.

* Hybrid power, meter also can supply

by the battery power.
Display 40 mm x 30.3 mm large LCD display.
Measurement ACV, ACA, DCV, DCA, ohms,

continuity beeper, Hz, Capacitance,

Diode, Data hold.
A/D counts no. 6000 counts.
Range selection Smart function, auto range.
Smart function " A " function can measure ACA with

auto range.

" V " function can select ACV, DCV

automatically with auto range.

" Ω " function can select the Resistance,

Diode, Continuity beeper, Capacitance

automatically with auto range.
Data hold To freeze the display reading on the

LCD display.

* Available for ACA measurement only.

Power On/Off Manual power off.
management Auto power off :

If meter is not operated within 10
minutes will auto power switch off.

2

Polarity Automatic Switching, " - " indicates

negative polarity.
Max. jaw open 42 mm ( 1.65 inch ) Dia.
size

Zero adjustment

Automatic.
Sampling time Approx. 0.5 to 1 second.
Operating 0 to 50 (32 to 122 ).℃ ℉
temperature
Operating Less than 80% RH.
humidity
Power Green power :
Supply Power from the handy generator,

battery is no need.

Battery power :

DC3V battery ( CR-2032 ) x 2 PCs.
Power DC 3.9 mA.
consumption
Weight 310 g/068 LB.
Dimension 228 x 85.7 x 45.6 mm

( 9.0 x 3.4 x 1.8 inch )

Accessories

Red and Black Test Leads.............

1 Set

Included

Instruction Manual.................................................

1 PC
Optional Carrying case : CA-05A.
accessories Full line adapters :

ACA/DCA current adapter,
Tachometer adapter,
Humidity adapter, Pressure adapter,
Light adapter, EMF adapter,
Sound level adapter,
High voltage probe.

3