Amprobe CR50A User Manual [en, de, es, fr]

CR50A

Capacitance, Resistance Meter

User Manual

• Bedienungshandbuch

• Manualdeuso

• Moded’emploi

200

20m

200p

200

ZERO

ADJUST

(20 )

OFF

20M

CR50

200

20n

CAP. ZERO ADJUST

DISCHARGE CAPACITOR

BEFORE CONNECTING

nF pF

Function/Range/

Off Selector

Funktion-/Bereich-

/Aus Schalter

Selector de

Función/Escala/Off

Sélecteur fon-

ctions/calibres/

marche-arrêt

Resistance Zero Adjustment

Nullabgleich für Widerstandsmessung

Ajuste de cero para medidas de resistencia

Mise à zero pour mesure de résistance

Capacitance Zero

Adjustment

Nullabgleich für

Kapazitätsmessung

Ajuste de cero para

medidas de

capacidad

Mise à zéro pour

mesure de

capacité

3-1/2 digit LCD; decimal point, function and unit indicators

3-1/2 Digit LCD ; Dezimalpunkt, Funktions- und Einheitsanzeigen

LCD de 3-1/2 dígitos, punto decimal, indicadores de función y unidades

LCD 3-1/2 digits ; point décimal, indicateurs de fonctions et d'unités

Input Terminals for resistance, diode test and continuity

Eingänge für Widerstand, Durchgangsund Diodentest

Entradas para medidas de resistencia, continuidad y prueba de diodos

Entrées pour mesure de résistance, test de diodes et continuité

Capacitance Input Terminals

Eingänge für Kapazitätsmessung

Entradas para medidas de capacidad

Entrées pour mesure de capacité

CR50A

Capacitance, Resistance Meter

User Manual

• Bedienungshandbuch

• Manual de uso

• Mode d’emploi

Limited Warranty and Limitation of Liability Your Amprobe product will be free from defects in material

and workmanship for 1 year from the date of purchase. This warranty does not cover fuses, disposable batteries or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Amprobe’s behalf. To obtain service during the warranty period, return the product with proof of purchase to an authorized Amprobe Test Tools Service Center or to an Amprobe dealer or distributor. See Repair Section for details. THIS WARRANTY IS YOUR ONLY REMEDY. ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR STAUTORY - INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE HEREBY DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you.

Capacitance, Resistance Meter

Contents

Symbols .................................................................................... 1

Warnings and Precautions ......................................................2

Overload Indication ................................................................ 2

Preparation For Use - Unpacking ...........................................2

Measuring Procedures ............................................................ 2

Safety Test Leads ..................................................................... 4

Speciﬁcations ...........................................................................4

Troubleshooting/Maintenance ...............................................6

Repair .......................................................................................7

Symbols





Battery

Refer to the manual



Double insulated



Audible tone



Fuse

Complies with EU directives



Conforms to relevant Australian standards



WarningsandPrecautions

• Do not exceed the maximum overload limits per function (see speciﬁcations) nor the limits marked on the instrument itself.

• Inspect instrument, test leads and accessories before every use. Do not use any damaged part.

• Never ground yourself when taking measurements.

• Do not touch exposed circuit elements or probe tips.

• Never replace a fuse with one of a different rating. Do not

operate instrument in an explosive atmosphere.

OverloadIndication

Range overload is indicated by “1” in the display with all other digits blanked. Select the next higher range until a value is displayed. If overload condition still exists in the highest range, the measured value is beyond the range of the meter. Overload indication is normal in the OHMS range when the leads are not connected to anything or when the measured value is higher than the selected resistance range.

PreparationForUse-Unpacking

Your shipping carton should include the CR50A, one test lead set (one black, one red), one pair of alligator clips, one 9V battery (installed), one spare 0.1A/250V fuse (inside the case), a holster, a warranty card and this manual. If any item is damaged or missing, return to the place of purchase for an exchange.

MeasuringProcedures

General: When connecting or disconnecting test leads to/from a circuit, always ﬁrst turn off power to device or circuit being tested and discharge all capacitors.

Resistance Measurement (Fig -1-)

1. Turn off power to the resistance to be measured

and discharge any capacitors. Any voltage present during a resistance measurement will cause inaccurate readings.·Connect red test lead to +Rx Input (red) and black test lead to -Rx Input.

2. Set Function/Range Switch to the desired Ω position.

3. Connect test leads to resistance or circuit to be measured.

4. Read resistance value on Digital Display. Open circuits will be

displayed as an overload condition.

Note: On the 20Ω range, an adjustment potentiometer (ZERO ADJ.) allows you to zero out the test lead resistance. Short the test leads and adjust the knob until the display reads zero.

Diode and Transistor Test (Fig -2-)

The diode test measures the voltage drop across the diode junction.

1. Connect the red test lead to the +Rx Input (red) and the black

test lead to the –Rx Input.

2. Set the Function/range switch to  position.

3. Apply probe tip of red lead to the anode and black lead to

the cathode of the diode. The meter’s display indicates the forward voltage drop (approximately 0.7V for silicon diode or 0.4V for germanium diode). Meter will display overload condition for an open diode.

4. Reverse test lead connections to the diode to perform a

reverse bias test. Overload indicates a good diode.

Note: Overload condition for both reverse and forward bias tests indicate an open diode. A low voltage reading for both bias tests indicates a shorted diode. If the diode is shunted by a resistor of 1000 ohms or less, it must be removed from the circuit before taking the measurement. Bipolar transistor junctions may be tested in the same manner described above.

Continuity Test

The Continuity test checks electrical continuity between two contact points.

1. Set the Function/Range switch to .

2. Plug the black test lead into the –Rx jack (black) and connect

the test lead tip to one of the contact points.

3. Plug the red test lead into the +Rx jack (red) and connect its

test lead point to the other contact point. (See Figure 1 for connections).

4. The internal beeper emits a tone when resistance is less than

approx. 75Ω

Capacitance Measurement (Fig -3-)

Discharge all voltage from the capacitor (via a 100kΩ resistor) before measuring its value.

1. Connect the red test lead to the Cx+ input and the black test

lead to the Cx– input.

2. Set the function/range switch to the capacitance range that

gives the best resolution.

3. Apply probe tips to the capacitor leads. When measuring

electrolytic capacitors, observe correct polarity.

4. Read the capacitance value on the display (you may have

to wait a few seconds until the capacitor is fully charged). If “OL” appears in the highest range, the capacitor is too large to be measured.

Note: For small value measurements utilize CAP Zero Adjust to eliminate test lead capacitance (±20pF).

Note: Small value capacitors can also be measured by inserting their leads directly into the slots in the meter.

SafetyTestLeads

The test leads included with your meter have shrouded banana plugs to eliminate the possibility of shock if the plugs accidentally pull out of the meter while making a measurement. Always inspect the test leads for damage before making any measurements.

Specications

General Speciﬁcations

Display: 3 1/2 digit LCD, 1999 counts Zero Adjustment: Adjustment potentiometer

Overrange Indication: “1” is displayed Low Battery Indication:  is displayed when the battery voltage

drops below accurate operating level. Change battery when

low battery is indicated. Display Update Rate: 2/sec, nominal Operating Temperature: 0°C to 50°C, 0 to 70% Relative Humidity Storage Temperature: -20°C to 60°C, 0 to 80% RH, battery

removed Power: Standard 9V transistor battery, NEDA 1604, JIS 006P, IEC

6F22 Battery Life (Typical): 200 hours alkaline, 150 hours carbon-zinc

Dimensions (H x W x D): 6.1 x 2.8 x 1.3 inches, (15.1 x 7.0 x 3.8 cm) Weight (including battery): 8 ounces (200 grams) Accessories: One pair of test leads, two alligator clips, one spare

fuse (FP125) installed in battery compartment, battery, holster

and Operator’s Manual

Agency Approvals: This product complies with requirements of the following

European Community Directives: 89/336/EEC (Electromagnetic

Compatibility) and 73/23/EEC (Low Voltage) as amended by

93/68/EEC (CE Marking). However, electrical noise or intense electromagnetic ﬁelds in the

vicinity of the equipment may disturb the measurement circuit. Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit. Users should exercise care and take appropriate precautions to avoid misleading results when making measurements in the presence of electronic interference.

Electrical Speciﬁcations

Accuracies at 23°C ± 5°C, <75% RH.

Resistance

Range Accuracy:

20Ω ±1.2% rdg.

200Ω ±(0.5% rdg +3 dgt)

2k-2MΩ ±(0.5%rdg + 1dgt)

20MΩ ±(3.0% rdg + 1dgt) Resolution: 0.01 in 20Ω rg. OL Protection, all Ranges: 500VDC or AC RMS Open Circuit Voltage: 0.3VDC;

3.0VDC on 20Ω and 200Ω ranges

Capacitance

Range Accuracy Test Frequency: 200pF ±(0.5% rdg +1 dgt +0.5pF) 820Hz 2000pF to 2µF ±(0.5% rdg +1 dgt) 820Hz 20µF ±(0.5% rdg +1 dgt) 82Hz 200µF ±(0.5% rdg +1 dgt) 8.2Hz 2mF ±(1% rdg +1 dgt) 8.2Hz 20mF ±(1.5% rdg +1 dgt) 8.2Hz

 EMC

Test Voltage: < 3.5V Input Protection: 0.1A/250V Fast Acting Fuse

Diode Test

Test Current/Voltage: 1mA (approx.) / 3.2VDC Display: Forward Junction Voltage

Continuity Indicator

Audible Indication: Less than 75Ω OL Protection: 500VDC or AC

Optional Accessories

VC30A: Vinyl Carrying Case (for meter and holster) DL243D: Deluxe Test Lead Set TL36A: Replacement Safety Test Leads w/alligator clips.

Troubleshooting/Maintenance

If there appears to be a malfunction during the operation of the meter, the following steps should be performed in order to isolate the cause of the problem:

1. Check the battery.

2. Review the operating instructions for possible mistakes

3. in operating procedure.

4. Inspect and test the Test Probes for a broken or intermittent

connection.

5. Inspect and test the fuse. See Fuse Replacement. Except for the replacement of the battery or fuse, repair of the

multimeter should be performed only by a Factory Authorized Service Center or by other qualiﬁed instrument service personnel.

The front panel and case can be cleaned with a mild solution of detergent and water. Apply sparingly with a soft cloth and allow to dry completely before using. Do not use aromatic hydrocarbons or chlorinated solvents for cleaning.

Battery/Fuse Replacement

To prevent electrical shock hazard, turn off the multimeter and any device or circuit under test and disconnect the test leads before removing the rear cover.

 Warning

1. Remove the screws and lift off the rear case.

2. Fuse Replacement: Remove the blown fuse (5 x 20mm) from

the fuse holder. Replace with a 0.1A/250V quick acting glass fuse (one spare fuse is located on the right side of the battery compartment). Amprobe replacement fuse part number is FP

125.

3. Battery replacement: Remove battery and replace with NEDA

type 1604 or equivalent 9-volt alkaline battery.

4. Reassemble the instrument.

Use of an incorrect fuse could result in serious injury or even death. Failure to turn off the multimeter before installing the battery could result in damage to instrument and battery.

 Warning

Repair

All test tools returned for warranty or non-warranty repair or for calibration should be accompanied by the following: your name, company’s name, address, telephone number, and proof of purchase. Additionally, please include a brief description of the problem or the service requested and include the test leads with the meter. Non-warranty repair or replacement charges should be remitted in the form of a check, a money order, credit card with expiration date, or a purchase order made payable to Amprobe® Test Tools.

In-Warranty Repairs and Replacement – All Countries Please read the warranty statement and check your battery

before requesting repair. During the warranty period any defective test tool can be returned to your Amprobe® Test Tools distributor for an exchange for the same or like product. Please check the “Where to Buy” section on www.amprobe.com for a list of distributors near you. Additionally, in the United States and Canada In-Warranty repair and replacement units can also be sent to a Amprobe® Test Tools Service Center (see address below).

Non-Warranty Repairs and Replacement – US and Canada Non-warranty repairs in the United States and Canada should be

sent to a Amprobe® Test Tools Service Center. Call Amprobe® Test Tools or inquire at your point of purchase for current repair and replacement rates.

In USA In Canada Amprobe Test Tools Amprobe Test Tools Everett, WA 98203 Mississauga, ON L4Z 1X9 Tel: 877-AMPROBE (267-7623) Tel: 905-890-7600 Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe® Test Tools distributor for a nominal charge. Please check the “Where to Buy” section on www.amprobe.com for a list of distributors near you.

European Correspondence Address* Amprobe® Test Tools Europe

In den Engematten 14 79286 Glottertal, Germany Tel.: +49 (0) 7684 8009 - 0 *(Correspondence only – no repair or replacement available from this address. European customers please contact your distributor.)

200

20m

200p

200

ZERO

ADJUST

(20 )

OFF

20M

CR50

20 k

200

20n

CAP. ZERO ADJUST

DISCHARGE CAPACITOR

BEFORE CONNECTING

200

20m

200p

200

ZERO

ADJUST

(20 )

OFF

20M

CR50

20 k

200

20n

CAP. ZERO ADJUST

DISCHARGE CAPACITOR

BEFORE CONNECTING

1.520 k

Cathode Anode

Cathode

600 - 900 mV

<1 V

Anode

200

20m

200p

200

ZERO

ADJUST

(20 )

OFF

20M

CR50

20 k

200

20n

CAP. ZERO ADJUST

DISCHARGE CAPACITOR

BEFORE CONNECTING

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