Tektronix CM-9930 Manuale utente

2000 A DCA/ACA CLAMP + DMM, true rms

DCA/ACA

CLAMP METE

Model : CM-9930

our purchase of this

DCA/ACA CLAMP METER

marks a step forward for

you into the field o

precision measurement.

lthough this CLAMP

METER is a complex and

delicate instrument, its

durable structure will

allow many years of use

if proper operating

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 .

* Pollution Degree 2.

* Altitude up to 2000 meters.

* Relative humidity 80% max.

TABLE OF CONTENTS

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

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

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 ...................................................................

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

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

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

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

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 Li

ht Operation......................................................

6. MAINTENANCE........................................................

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

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

7. OPTIONAL ACCESSORIES & ADAPTERS .................... 14

8. THE ADDRESS OF AFTER SERVICE CENTER...............15

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.

* 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,

Range Capacitance, Duty cycle, Continuity beeper.

Polarity Automatic Switching, "-" indicates

negative polarity.

Current Sensor Hall effect sensor.

Zero adjustment

DCA :

Push bottom adjustment.

Other ranges :

Automatic adjustment.

Over-input Indication of "1" or "-1".

Sampling Time Approx. 0.35 second.

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

006P, MN1604 ( PP3) or equivalent.

Power Consump. Approx. DC 5 mA.

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 60 mm ( 2.36 inch ) Dia.

Open Size

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

Included

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

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

Optional Carrying case, Temperature Adapter,

Accessories

Light Adapter, Anemometer Adapter,

Adapters Pressure Adapter, RH Adapter,

* Ref. page 1

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 m

0.01 mA ± ( 1.2% + 5d ) AC/DC 500 mA

400 m

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

* 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.

Function Range Reso-

ccuracy 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 %

non con

ance, goo

d/d

Continuity If rmeasuring esistance is less than 10 ohm, the

beeper will sound .

Remark :

Spec. tested under the environment RF Field Strengt

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

he accuracy of capacitance range are specified under tha

the " zero " procedure is executed before the measuremen

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

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Current Sense Jaws 3-9 Function button ( DC/AC, ohm,

3-2

rigger Continuity, Diode Capacitance )

3-3 Function indicator 3-10 Manual range select button

3-4 Function rotary switch 3-11 Display

3-5 DCA zero button 3-12 uA/mA direct current input

3-6 Relative button terminals

3-7 Data hold / Back light 3-13 V, ohm, Hz, Diode, Continuity,

button Capacitance input terminals

3-8 V/Hz/% ( Duty Cycle ) 3-14 Battery cover/Compartment

button 3-15 Stand

4. PRECAUTIONS & PREPARATIONS

FOR MEASUREMENT

1) Ensure that the DC 9V battery is connected to its snap

terminal with the right polarity and placed in the battery

compartment correctly.

2) Place the Red & Black Test Leads into the proper input

terminal before making measurement.

3) Remove either of the test leads from the circuit when

changing the measurement range.

4) Except operate the " Data Hold " function, it should

cancel the " Data Hold " function, otherwise the display

reading will freeze permanently.

5) Do not exceed the maximum rated voltage to the input

terminal.

6) Always switching the " Function Rotary Switch " to the

" Off " position when the instrument is not operation.

7) Remove the battery if the instrument is not to be used in

a long period of time.

8) Though the " Ohm " & " Capacitance " ranges build the

overload protection circuit, however it is prohibited to

apply any voltage to input terminal when making the

measurement.

9) The water resistance structure is apply for the

front panel only. Do not throw the instrument into

water, otherwise the meter will be damaged

permanently.

)

For safety consideration, when change the new test

leads, it should use the replace test leads that already

approval of " CATIII-1000V ".

5. MEASURING PROCEDURE

5-1 Symbols & units of display

Symbols / Descriptions

Units

Appears when selecting DCV or DCA mode.

Appears when selecting ACV & ACA mode.

Appears when the " Data hold " function is

operated.

Appears when the " Relative " function is

operated.

Battery voltage is under the low condition

already.

Appears when operating the " Automatic

range " mode.

Appears when the " Continuity beeper " is

operated.

mV, V Units for voltage measurements.

Ω, KΩ, MΩUnits for resistance measurements

Appears when the " Diode " function is

operated.

Appears when measuring a DCV or DCA

value is negative.

Back light

% Unit for " Duty cycle " measurement.

uA, mA,

Units for " Current " measurement.

Hz, KHz Units for " Frequency " measurement.

nF, uF Units for " Capacitance " measurement.

Appears when " Clamp on " current

measurement is operated.

5-2 DCV, ACV Measurement

1) Connect BLACK test lead into " COM " terminal.

2) Connect RED test lead into " V " terminal.

3) If measure " DCV ", select the " Function rotary switch "

( 3-4, Fig. 1 ) to the " V " position then push the

" FUNC. button " ( 3-9, Fig. 1 ) for display show " ".

4) If measure " ACV ", select the " Function rotary switch "

( 3-4, Fig. 1 ) to the " V " position then push the

" FUNC. button " ( 3-9, Fig. 1 ) for display show " ".

5) When LCD show the " AUTO " marker, the meter is

under the " auto range " mode., the meter will select the

suitable measurement range automatically.

6) Under the operation of " auto range " mode, push the

" Range button " ( 3-10 Fig. 1 ) will hold the range.

5-3 Resistance Measurement

1) Connect BLACK test lead into " COM " terminal.

2) Connect RED test lead into " Ω" terminal.

3) Select the " Function rotary switch " ( 3-4, Fig. 1 ) to the

" Ω" position then push the " FUNC. button "

( 3-9, Fig. 1 ) for display show " Ω".

4) When LCD show the " AUTO " marker, the meter is

under the " auto range " mode., the meter will select the

suitable measurement range automatically.

5) Under the operation of " auto range " mode, push the

" Range button " ( 3-10 Fig. 1 ) will hold the range.

5-4 Continuity Check

1) Connect BLACK test lead into " COM" terminal.

2) Connect RED test lead into " Ω" terminal.

3) Select the " Function rotary switch " ( 3-4, Fig. 1 ) to the

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