MasterCool 52240 Instruction Manual

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OPERATING INSTRUCTIONS

DIGITAL CLAMP METER MODEL#–52240

BEDIENUNGSANLEITUNG

DIGITALES ZANGENMESSGERÄT MODEL#–52240

MANUEL D’OPÉRATION

PINCE MULTIMETRE NUMERIQUE MODÈLE#–52240

INSTRUCCIONES DE OPERACION

MEDIDOR DIGITAL CON ABRAZADERA MODELO#–52240

MANUAL DE OPERAÇÃO

ALICATE AMPERÍMETRO DIGITAL MODELO#–52240

1www.mastercool.com

P H

PEAK

HOLD

DATA

HOLD

600 OFF

200

200

20K 2K

750

200

1000

20

Hz

DIGITAL CLAMP METER

A

V

V

MAX 1000V 750V ~ 600A ~

52240

INPUT
WAVEFORM

PK-PK O-PK RMS AVG

2.828 1.414 1.000 0.900

1.414 1.414 1.000 0.900

2.828 2.828 1.414 0.900

1.800 0.900 0.900 0.900

1.800 1.800 1.272 0.900

0.9/D 0.9/D 0.9/D 0.9/D

3.600 1.800 1.038 0.900

Display Multiplier for

Measurement Conversion

PEAK

PEAK

PEAK

PEAK

PK

0

PK

0

PEAK

PK

0

SINE

RECTIFIED SINE
(FULL WAVE)

RECTIFIED SINE
(HALF WAVE)

SQUARE

RECTIFIED SQUARE

RECTANGULAR PULSE

TRIANGLE SAWTOOTH

PK

0

PK

0

PEAK

PK

0

PEAK

PK

0

X

Y

D=X/Y

P H

PEAK

HOLD

DATA

HOLD

600 OFF

200

200

20K 2K

750

200

20

Hz

A

52240

English

52240 Digital Clamp Meter

Instruction Manual

This clamp meter is completely portable, 3 1/2 digit hand held test instrument provides versatile measuring capabilities. It
is an ideal tester for maintenance and inspection on all types of electrical equipment.

FEATURES

• Multi-Function: Frequency Count, Diode Check and Alarm • AC voltage: 200V / 750V

• DC voltage: 1000V • Peak Data Hold

• Frequency: 2KHz • Unit and Sign Display

• Resistance (ohm): 200 ohm / 20k ohm • AC current: 20A / 200A / 600A

1. Transformer Jaws: Measures the AC current flowing through the conductor.

2. PEAK HOLD Switch: A push switch (push ON, OFF, ON: LCD displays
(

sign). Peak detector holds the maximum RMS value of Current or

1

P

Voltage surge while a motor is starting.

6

2

3

3. Trigger: Press the lever to open the transformer jaws. When the pressure
lever is released, the jaws will close again.

7

4. Display: 3 1/2 digit (1999 count), unit and sign display.

5. V, Hz, “

8

” , “ ”. Input Connector: High (+) and Low (-) input jack for

all voltage, resistance, frequency, continuity, and diode measurement.

6. Slot to Clamp in the Probe: Clamp the test probe for measurement.

7. DATA HOLD Switch: A push switch, (Push ON, OFF, ON: LCD displays (

H

sign). Holds the reading on the LCD display (for all functions and ranges.)

4

5

8. Rotary Switch: A rotary switch is used to select measurement function,
Range, and Power (ON/OFF) switch.

9. Drop-Preventing Wrist Strap:

9

Prevents the instrument from
slipping off the
hand while in use.

DATA

HOLD

600 OFF

200

APPLICATIONS

Probe may be snapped into “Slot” so only one hand is needed to hold
both the Meter and probe tip in contact with test point.

FIGURE 1

INPUT
WAVEFORM

SINE

PK

0

2.828 1.414 1.000 0.900

RECTIFIED SINE
(FULL WAVE)

PK

1.414 1.414 1.000 0.900

0

RECTIFIED SINE
(HALF WAVE)

PK

2.828 2.828 1.414 0.900

0

SQUARE

PK

1.800 0.900 0.900 0.900

0

RECTIFIED SQUARE

PK

1.800 1.800 1.272 0.900

0

RECTANGULAR PULSE

PK

0.9/D 0.9/D 0.9/D 0.9/D

0

TRIANGLE SAWTOOTH

PK

0

3.600 1.800 1.038 0.900

PEAK

PEAK

PEAK

PEAK

PEAK

D=X/Y

PEAK

X

Y

PEAK

Display Multiplier for

Measurement Conversion

PK-PK O-PK RMS AVG

2 www.mastercool.com

OPERATING INSTRUCTIONS

This section of the manual will provide you with information on
measurement techniques to help you fully utilize the measurement
capabilities of this instrument.

AC Current Measurement

This Clamp Meter measures the average value of an AC signal and
displays it as an equivalent RMS value for a sine wave. The measure­ments errors are introduced when the input wave form is distorted
(non-sinusoidal). The amount of errors depends upon the amount of
distortion. (FIGURE 1) shows the relationship between sine, square,
triangular waveforms and the required conversion factors.

1. Set Function/Range switch to desired A~range. (20Ã or 200 Ã
or 600 Ã)

2. Press the trigger to open the transformer
jaw and clamp one conductor to be
measured. (FIGURE 2).

3. Read the AC current value on LCD.

4. If you want to hold the display value,
push the DATA HOLD switch before
removing the transformer jaws from
the conductor.

Hz

20

20K 2K

PEAK

HOLD

52240

750

P H

200

200

A

1000

V

V

DIGITAL CLAMP METER

MAX 1000V 750V ~ 600A ~

FIGURE 2

AC/DC Voltage Measurement

1. Set Function/Range Switch to desired V~ or V “ ” range.

2. Insert the red test probe to “ + ” input jack and black test probe to “ - ” input jack.

3. Connect test prods of test probes IN PARALLEL to the circuit being measured.

4. Read the voltage value on LCD.

5. If you want to hold the display value, push the DATA HOLD switch before disconnecting the probes from the measuring
points.

Resistance Measurement

1. Set Function/Range Switch to desired range.

2. Insert the red/black test probes to the “ + ” and “ - ” input jacks respectively.

3. Connect the test probes to the circuit being measured and read the resistance value on LCD.

WARNING: Before taking any in-circuit resistance measurement, remove power from the

circuit being tested and discharge all capacitors.

Diode Tests (“ ”)

1. Set Function/Range Switch to “ ” range.

2. Insert the red test probe to “ + ” input jack and black test probe to “ - ” input jack.

3. Connect the Red test probe to the anode side and Black test probe to the cathode side of the diode being tested.

4. Read forward voltage (Vf) Value on LCD.

5. Connect the test probe to the diode, opposite of step 3. The digital display value should be over range (1). This can be
used for distinguishing anode and cathode poles of a diode.

WARNING: Before taking any in-circuit measurement remove power from the circuit being tested

and discharge all capacitors in the circuit.

Continuity Measurements “ ”

1. Set Function/Range Switch to “ ” position.

2. Insert the red/black test probes to the “+” and “-” input jacks.

3. Connect the test probes to the circuit being measured.

4. When the impedance on circuit is below 100, a continuous beep will sound.

Frequency Measurement (Hz)

1. Set Function/Range Switch to 2 KHz Range.

2. Insert the red/black test probes to the “+” and “-” input jacks.

3. Connect the test probes to the circuit being measured.

4. Read the frequency value (Hz) on LCD.

PEAK DETECT MEASUREMENT

1. Set Function/Range Switch to desired A ~ or V ~ range.

2. Set the Clamp Meter into the “PEAK HOLD” mode by pushing the “PEAK HOLD” Switch. The LCD display will indicate
“P” when Peak Detect mode is measured.

3. Follow this procedure for AC voltage and Current measurement. The displayed reading is the maximum RMS value of a
surge in current or a Voltage pulse. The reading decays at the rate of about 1 digi/second.

GENERAL SPECIFICATIONS
Display:

3 1/2 digit LCD (1999 count) with “ P ” (Peak Hold), “ H ” (Data Hold), “-”,
“BT” (Lo Bat), “~”, “V”, “A”, “ ”, “K”, “KHz” and decimal enunciators.

Sampling Rate:
Diameter of Conductor:
Polarity:
Range Selection:
Over Range Indication:
Low Battery Indication:
Battery Life:
Power Requirements:
Operating Temperature and Humidity:
Storage Temperature and Humidity:
Dimension:
Weight:
Accessories:

2.5 times per second.
40mm max.
Automatic “-” negative polarity indication.
All ranges are measured by single range switch operation.
Highest digit of (1) or (-1) is display.
“BT” appears on display in the last 20% of battery life.
Up to 200 hours with an Alkaline battery.
Single 9V battery.
32ºF to 104ºF (0ºC to 40ºC) below 80%RH
14ºF to 140ºF (-10ºC to 60ºC) below 80%RH.

8.2”L x 2.6”W x 1.3”H (208 x 65 x 31mm).

1.6 oz (330g) including battery.
Test probes, Instruction Manual, Carrying Case, Battery

3www.mastercool.com

ELECTRICAL SPECIFICATIONS

Accuracies are ± (% reading + tolerance) at 23ºC ± 5ºC below 80%RH.

1. General Measurement

AC Current

Range Resolution Accuracy (50Hz/60-Hz) Overload

20A 10mA ± (2% rdg + .05A)

Protection 1000A (within 60 sec.)200A 100mA ± (2% rdg + .5A)

600A 1A ± (2% rdg + 5A)

DC Voltage

Range Resolution Accuracy Input Impedance Overload Protection

1000V 1V ± (0.8% rdg + 2 volts) 10M

AC Voltage

Range Resolution Accuracy (40Hz~400Hz) Input Impedance Overload Protection

200V 100mV ± (1.2% rdg + .3V)
750V 1V ± (1.2% rdg + 3V) AC800V

10M

DC1100V

AC800V

DC1100V

Resistance (

)

Range Resolution Accuracy Max. Open Circuit Voltage Overload Protection

200 100m ± (1% rdg + .2) 3.5V
20K 10 ± (1% rdg + 20) 0.3V

350Vrms

Frequency (Hz) (10Hz ~ 2KHz)

Range Resolution Accuracy Max. Input Sensitivity

Max. Allowable Applied Voltage

2KHz 1Hz ± (1% rdg + 2Hz) 100mV 350Vrms

Continuity Check (

)

Range Description Max. Open Circuit Voltage Overload Protection

Built-in buzzer sounds if conductance

is less than 100

3.5V 350Vrms

Diode (

20A

)

Range Resolution Max. Open Circuit Voltage Overload Protection

1mV 3.5V 350Vrms

2. Peak Hold Measurement

(Capture and retain momentary voltage or current surge and display it.)
AC Current

Range Resolution Accuracy (40Hz~400Hz) Overload Protection

20A 10mA ± (2% rdg + .1A)

1000A (within 60 sec.)200A 100mA ± (2% rdg + 1A)

600A 1A ± (2% rdg + 10A)

Peak Detect Acquisitions Time: Approx. 100ms.
(Acquisition time is the minimum duration of a surge for rated accuracy. Accuracy improves for longer peak duration).

SAFETY RULES

1. Never ground yourself when taking electrical measurements. Keep your body isolated from ground by using dry
clothing, rubber shoes, rubber mats or any suitable and approved insulating material.

2. Disconnect input signal before touching the battery.

4 www.mastercool.com

P H

PEAK

HOLD

DATA

HOLD

600 OFF

200

200

20K 2K

750

200

1000

20

Hz

DIGITAL CLAMP METER

A

V

V

MAX 1000V 750V ~ 600A ~

52240

INPUT
WAVEFORM

PK-PK O-PK RMS AVG

2.828 1.414 1.000 0.900

1.414 1.414 1.000 0.900

2.828 2.828 1.414 0.900

1.800 0.900 0.900 0.900

1.800 1.800 1.272 0.900

0.9/D 0.9/D 0.9/D 0.9/D

3.600 1.800 1.038 0.900

Display Multiplier for

Measurement Conversion

PEAK

PEAK

PEAK

PEAK

PK

0

PK

0

PEAK

PK

0

SINE

RECTIFIED SINE
(FULL WAVE)

RECTIFIED SINE
(HALF WAVE)

SQUARE

RECTIFIED SQUARE

RECTANGULAR PULSE

TRIANGLE SAWTOOTH

PK

0

PK

0

PEAK

PK

0

PEAK

PK

0

X

Y

D=X/Y

9

8

7

6

5

4

3

2

1

P H

PEAK

HOLD

DATA

HOLD

600 OFF

200

750

200

20

A

V

INPUT
WAVEFORM

PK-PK O-PK RMS AVG

2.828 1.414 1.000 0.900

1.414 1.414 1.000 0.900

2.828 2.828 1.414 0.900

1.800 0.900 0.900 0.900

1.800 1.800 1.272 0.900

0.9/D 0.9/D 0.9/D 0.9/D

3.600 1.800 1.038 0.900

Display Multiplier for

Measurement Conversion

PEAK

PEAK

PEAK

PEAK

PK

0

PK

0

PEAK

PK

0

SINE

RECTIFIED SINE
(FULL WAVE)

RECTIFIED SINE
(HALF WAVE)

SQUARE

RECTIFIED SQUARE

RECTANGULAR PULSE

TRIANGLE SAWTOOTH

PK

0

PK

0

PEAK

PK

0

PEAK

PK

0

X

Y

D=X/Y

Signal d'entrée
de form d'onde

PK-PK O-PK RMS AVG

2.828 1.414 1.000 0.900

1.414 1.414 1.000 0.900

2.828 2.828 1.414 0.900

1.800 0.900 0.900 0.900

1.800 1.800 1.272 0.900

0.9/D 0.9/D 0.9/D 0.9/D

3.600 1.800 1.038 0.900

Multiplicateur applicable pour

conversion de mesure

PEAK

PEAK

PEAK

PEAK

PK

0

PK

0

PEAK

PK

0

SINE

RECTIFIED SINE
(FULL WAVE)

RECTIFIED SINE
(HALF WAVE)

SQUARE

RECTIFIED SQUARE

RECTANGULAR PULSE

TRIANGLE SAWTOOTH

PK

0

PK

0

PEAK

PK

0

PEAK

PK

0

X

Y

D=X/Y

Entrada para
Forma de Onda

PK-PK O-PK RMS AVG

2.828 1.414 1.000 0.900

1.414 1.414 1.000 0.900

2.828 2.828 1.414 0.900

1.800 0.900 0.900 0.900

1.800 1.800 1.272 0.900

0.9/D 0.9/D 0.9/D 0.9/D

3.600 1.800 1.038 0.900

Exhibe Multiplicador la

conversiòn de la medida

PICO

PICO

PICO

PICO

PK

0

PK

0

PICO

PK

0

SENO

SENO RECTIFICADO
(ONDA COMPLETA)

SENO RECTIFICADO
(MEDIA ONDA)

CUADRADO

CUADRADO RECTIFICADO

PULSO RECTANGULAR

TRIANGULO DIENTE DE SIERRA

PK

0

PK

0

PICO

PK

0

PICO

PK

0

X

Y

D=X/Y

Deutsch

52240 Digitales Zangenmessgerät

Betriebsanweisung

Dieses Zangenmessgerät ist ein tragbares Prüfgerät mit 14 mm grosser Datenanzeige und es erlaubt sämtliche Messun­gen verschiedener Art. Es ist ein ideales Messgerät bei Wartung und Pflegearbeiten an elektrischen Anlagen und Geräten.

MERKMALE

• Wechselstrom : 10mA bis 600A • Gleichstromspannung : 1V bis 1000 V

• Durchgangsstörungsmeldung (Akustisch) • Messwerte & Spitzenwertespeicher

• Wechselspannung : 100 mV bis 750 V • Frequenzmessung : 10Hz bis 2 K Hz

• Diodenprüfung • Einheit & Symbolzeichen

1. Klemm und Führungsbacken: Zum Messen von Wechselstromspannung in
Stromleitungen.

1

2

3

4

5

2. Schalter für Spitzenwerte (Peak hold): Ein Druckschalter (beim drücken ON,
OFF, ON : LCD zeigt
Strom oder Spannungswelle während einen Motor angelassen wird.

6

3. Kippschalter: Dieser Hebel drücken zum Öffnen der Klemmbacken. Bei Drucka

7

bnahme schliessen sich die Klemmbacken wieder.

4. Display: 14 mm grosse Zahlen (bis1999), Einheit und Zeichenandeutung.

8

5. V, Hz, “
für alle Spannung-, Widerstand-, Frequenz-, Kontinuität- und Diodenmessungen.

6. Schlitz zur Befestigung der Probe: Probe befestigen während Messungen.

7. Schalter zum Wertspeicher (Data hold): Ein Drückschalter (beim drücken ON, OFF,
ON : LCD zeigt
Funktionen und Werte).

8. Funktionsschalter, drehbar: Dieser drehbare
Schalter wählt die Messfunktionen, Bereich und

9

Ein/Ausschalt (On/Off).

9. Trageband für das Handgelenk: Zum
vermeiden dass das Gerät wegrutscht
oder herunterfällt.

ANWENDUNGEN

Die Probe kann im Schlitz befestig werden,damit man gleichzeitig mit einem Hand das
Messgerät und den Probenspitz in Kontakt bringt mit der Prüfstelle.

ABBILDUNG 1

Eingangs –
Wellenform

Sinus Spitzenwert

PK

0

2.828 1.414 1.000 0.900

Angepasster Sinus (Volle Welle)

PK

1.414 1.414 1.000 0.900

0

Angepaster Sinus (Halbe Welle)

PK

2.828 2.828 1.414 0.900

0

Rechteckig Spitzenwert

PK

1.800 0.900 0.900 0.900

0

Rechteckig Spitzenwert Angepasst

PK

1.800 1.800 1.272 0.900

0

Rechteckiger Spitzenwert Pulsation

D=X/Y

PK

X

0.9/D 0.9/D 0.9/D 0.9/D

0

Y

Dreieckiger Spitzenwert Sägezahn

PK

3.600 1.800 1.038 0.900

0

Display Multiplikator für

Mess-Umrechnungen

PK-PK O-PK RMS AVG

PEAK

PEAK

PEAK

PEAK

PEAK

PEAK

PEAK

” , “ ”. Steckereingang: Hoch ( + ) und Niedrig ( - ) Steckerprobe

P

Zeichen) Spitzenwert von maximalem Drehzahlwert der

H

Zeichen). Speichert die Werte auf dem LCD – Display (Für alle

BEDIENUNGSANWEISUNGEN

In diesem Teil der Bedienungsanweisung finden Sie sämtliche Hinwei­se damit alle verschiedenen Messtechniken optimal benutzt werden.

Wechselstrommessungen

Dieses Zangenmessgerät misst den durchsch-nittlichen Wert eines
Wechselstromsignals undzeigt dieses als Äquivalenter RMS – Wert
einer Sinuswelle. Die Messfehler werden eingegebensobald die
Eingangswellenangabe sich verformthat. (Non – Sinusoidal). Die
Fehlerzahl ist jenachdem das Mass der Verformung. Abbildung 1.
zeigt das Verhältnis zwischenSinus, Quadrat, Dreieckwellenangaben
und den gewünschten Umrechnungsfaktoren.

1. Der Funktionsschalter positionieren auf den erwünschten
A-Bereich. (20A oder 200 A oder 600A).

2. Der Kippschalter drücken damit sich die
Klemmbacken öffnen und einen Stromführer
umfassen zum Messen. (Abbildung 2).

3. Der Wechselstromwert wird im Display
gezeigt.

4. Wollen Sie der Displaywert speichern, dann
drücken Sie der Data-Hold Schalter (7)
bevor die Klemmbacken vom Stromführer
wegzunehmen.

DATA

HOLD

600 OFF

200

Hz

20

20K 2K

PEAK

HOLD

52240

750

P H

200

200

A

1000

V

V

DIGITAL CLAMP METER

MAX 1000V 750V ~ 600A ~

ABBILDUNG 2

5www.mastercool.com