Lutron Electronics CM-9930R Operation Manual

2000 A DCA/ACA CLAMP + DMM, true rms
RS232/USB Computer interface

DCA/ACA
CLAMP METER

Model : CM-9930R

Your purchase of this
DCA/ACA CLAMP
METER with RS232/USB
computer interface
marks a step forward for
you into the field of
precision measurement.
Althou

g

h this CLAMP
METER is a complex and
delicate instrument, its
durable structure will
allow many years of use
if proper operatin

g

techniques are
developed. Please read
the followin

g

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 .

* Pollution Degree 2.

* Altitude up to 2000 meters.

* Relative humidity 80% max.

TABLE OF CONTENTS

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

2. SPECIFICATIONS............................................... 1

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

.

1

2-2 Electrical Specifications.................................

.

2

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

.

4

4. PRECAUTIONS & PREPARATIONS FOR

MEASUREMENT..................................................

.

5

5. MEASURING PROCEDURE...................................

.

6

5-1 Symbols & Units of Display ............................... 6

5-2 DCV, ACV Measurement ..................................

.

7

5-3 Resistance Measurement................................... 7

5-4 Continuity Check .............................................. 7

5-5 Diode Test ....................................................... 8

5-6 AC Current Measurement ( Clamp on )............... 9

5-7 DC Current Measurement ( Clamp on )............... 9

5-8 AC Current Measurement ( Direct input ) ...........10

5-9 DC Current Measurement ( Direct input ) ...........10

5-10 Capacitance Measurement.................................11

5-11 Frequency Measurement................................... 11

5-12 Duty Cycle Measurement...................................12

5-13 Data Hold Operation.........................................

.

12

5-14 Relative Operation............................................

.

12

5-15 Back Light Operation.........................................12

6. MAINTENANCE................................................... 13

6-1 Replacement of Battery................................. 13

6-2 Replaacement of Fuse................................... 13

7. RS232 PC SERIAL INTERFACE.............................14

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

.

16

9. THE ADDRESS OF AFTER SERVICE CENTER.........17

1. FEATURES

* 2 in 1, 2000 A clamp meter + Digital multimeter.
* Design meet IEC 1010 CATIII 1000V safety requirement.
* True rms reading for ACV & ACA measurement.
* 4000 counts, Auto range, multi-functions for ACA,

DCA, ACV, DCV, Ohms, Capacitance, Hz, Duty cycle,
diode and continuity check.

* Wide ranges ( 2000A, 400 A ) clamp on current

measurement both for ACA & DCA.

* 4 ranges ( 400 uA, 4000 uA, 40 mA, 400 mA ) direct

current input measurement both for ACA & DCA.

* LSI circuit provides high reliability and durability.
* Overload protection circuit is provided for all ranges.
* Data hold, Relative key, Back light.
* RS232/USB PC COMPUTER interface.
* Compact & heavy duty ABS and fireproof plastic case.

2. SPECIFICATIONS

2-1 General Specifications

Display 15 mm (0.6") LCD, 4 digits,

Max. indication 4000.
Measurement ACA, DCA, ACV, DCV, Ohms, Diode, Hz,
Ran

g

e Capacitance, Duty cycle, Continuity beeper.

Polarity Automatic Switching, "-" indicates

ne

g

ative polarity.
Current Sensor Hall effect sensor.
Zero adjustment

DCA :

Push bottom adjustment.

Other ranges

:

Automatic adjustment.
Over-input Indication of " OL " or " -OL ".
Sampling Time Approx. 0.35 second.
Data Output RS 232/USB PC computer interface.

*

Connect the optional RS232 cabl

e

UPCB-02 will get the RS232 plug.

*

Connect the optional USB cabl

e

USB-01 will get the USB plug.

Battery DC 9V battery, heavy duty or Alkaline type,

006P, MN1604 ( PP3) or equivalent.

Power Consump. Approx. DC 5 mA.

1

Operating Temp. 0 to 50 (32 to 122 ).℃℃℉ ℉
Operating Less than 80% RH.
Humidity
Weight 380 g/0.85 LB (including battery).
Dimension HWD : 255 x 73 x 38 mm.

(10 x 2.9 x 1.5 inch)
Max. Jaw 51 mm ( 2.1 inch ) Dia.
Open Size

Accessories Operation manual...............................1 PC

Included

T

est lead (red & black)........................1 Set

Fuse ( 500 mA, 5 mm dia. x 20 mm )...1 PC

Optional * RS232 cable........................... UPCB-02

Accessories & * USB cable.............................. USB-01

Adapters * Data Acquisition software

* Refer t

o

..................................SW-U801-WIN

page 1

5

* Carrying case, EMF Adapter,

Li

g

ht Adapter, Anemometer Adapter,

Pressure Adapter, Sound Adapter,

T

achometer Adapter, High Voltage Probe.

2-2 Electrical Specifications (23 ±5 )℃

Function Range Reso- Accuracy Overload

lution Protection

DC/AC 400 mV 0.1 mV ± ( 0.5 % + 2d )

Voltage (DC only)

4 V 0.001V

DCV:

40 V

0.01V

± ( 1 % + 2d )

400 V 0.1 V

ACV:

AC/DC 1000 V.

1000V 1 V ± ( 1.2 % + 5d )

DC / AC 400 uA 0.1 uA

Current 4000 uA

1 uA

(Direct input) 40 mA 0.01 mA ± ( 1.2% + 5d ) AC/DC 500 mA

400 mA 0.1 mA ( Fuse )

DC /AC 400 A 0.1 A ± ( 2 % + 5 d )
current

(Clamp on)

2000 A

1 A

± ( 2 % + 8 d )

AC/DC
2000A/1000V

Remar

k

* True rms measurement both for ACV, ACA function.

* Input impedance for ACV & DCV range is 10 Mega ohm.
* ACA, ACV frequency response is from 45 to 1 KHz.
* ACA, ACV specification be tested on sine wave 50/60 Hz.

2

Function RangeReso-Accurac

y

Overload

lution Protection

Ohms 400 ohm 0.1 ohm

4 K ohm 1 ohm
40 K ohm 10 ohm ± ( 1 % + 5 d )
400 K ohm 100 ohm
4 M ohm 1 K ohm ± ( 2 % + 2 d ) AC / DC 400V
40 M ohm 10Kohm ± ( 3.5 % + 5d )

Capacitance

50 nF 10 pF
500 nF 100 pF
5 uF 0.001 uF

± ( 3 % + 5d )

50 uF 0.01 uF

* See Remark

AC / DC 400V

Frequency 5 Hz 0.001 Hz

( > 5 V )

50 Hz 0.01 Hz
500 Hz 0.1 Hz
5 KHz 1 Hz

± (1 % + 5 d)

50 KHz 0.01 KHz
100 KHz 0.1 KHz AC / DC 1000V

Duty cycle 1 % to 0.1 %

99 %

Diod

e

Short/

non conductance, goo

d/defect test

Continuity If rmeasuring esistance is less than 10 ohm, the

beeper will sound .

Remark

:

*Spec. tested under the environment RF Field Strengt

h

less than 3 V/M & frequency less than the 30 MHz only.

*

T

he accuracy of capacitance range are specified under tha

t

the " zero " procedure is executed before the measuremen

t

( push " REL. button, refer 5-10, page 11 ).

3