ACD-20SW/ACD-21SW Digital Clamp Meter Users Manual • • • • Mode d’emploi Bedienungshandbuch Manual d’Uso Manual de uso
Digital Clamp Meter Users Manual July 2009, Rev.1 ©2009 Amprobe Test Tools. All rights reserved.
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.
14 10 1 1 11 2 3 2 12 4 5 11 9 3 12 4 13 5 9 6 6 7 7 8 14 8 15 1. Current Jaws 2. Jaw Opening Lever 3. NCV LED indicator 4. Function Selector Knob 5. Range push button selector 6. LCD Display 3 ¾ digit with 3999 counts 7.Common (Ground reference) Input jack for all functions EXCEPT clamp-on ACA current function 8. Input jack for all functions EXCEPT clamp-on ACA current function 9. NCV Push button function 10. NCV Sensor 11.
CONTENTS SYMBOLS.............................................................................................................5 Safety Information.........................................................................................5 UNPACKING AND INSPECTION...........................................................................7 INTRODUCTION...................................................................................................7 OPERATION.....................................................
SYMBOLS Battery W Refer to the manual T Double Insulated J Earth Ground B Alternating Current F Direct Current P Complies with EU directives , Application around and removal from hazardous live conductors is permitted ; Conform to relevant Australian standards = Do not dispose of this product as unsorted municipal waste m Audible tone ) I Fuse Canadian Standards Association (NRTL/C) Safety Information • The ACD-20SW and ACD-21SW swivel Clamp meters conform to EN610101:2001; EN610
• Inspect the Clamp meter, 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 test probe tips. • Do not operate the instrument in an explosive atmosphere. • To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. • The meter is intended only for indoor use.
UNPACKING AND INSPECTION Your shipping carton should include: 1 ACD-20SW or ACD-21SW Swivel Clamp Meter 1 Set of Test leads 1 Soft Carrying Case 1 Users Manual 1 Type K Thermocouple probe (Model ACD-21SW only) 2 1.5V AAA Batteries (Installed) If any of the items are damaged or missing, return the complete package to the place of purchase for an exchange.
OPERATION HOLD Button Data hold freezes the reading present on the LCD at the moment the button is pressed.To use this menu feature, set up the meter for the type of measurement and range desired. Connect the test leads to the circuit / component to be measured and then press “HOLD” push button. The LCD reading will freeze and display “HOLD.” You may now remove the test leads and the reading will not change until you press Hold again.
Capacitance Measurement (ACD-21SW only) When testing a capacitor that is part of a circuit, if “dS.C” is displayed on the screen, a voltage is present. Discharge the capacitor before testing. 1. Sett the Function Switch to “ E ” position. 2. Connect the test leads: Red to +, Black to COM. 3. Connect the test probes to the circuit test points. Refer to Fig. 4 4. Read the display. If necessary, correct any overload (0L) conditions.
Diode Testing (ACD-20SW) 1. Set the Function Swith to “ “ position. 2. Connect the red test lead to the “Ve” jack and the black test lead to the “COM” jack. 3. Turn off power to the circuit under test. External voltage across the components may cause invalid readings. 4. Connect the probes to the diode. A forward-voltage drop is about 0.6V (typical for a silicon diode). 5. Reverse probes connection with the diode. If the diode is good, “OL” isdisplayed. If the diode is shorted, “0.
Auto Power off 1. Auto power off: approx. 10 minutes. 2. After auto power off, press any button to restart the meter, and the reading of measurement will be maintained in the display. Cancellation of Auto Power off feature: • Press and hold the (RANGE) button while rotating function switch from off to any position to turn the meter on. • The auto power off feature is disabled. • Note “APO” annunciator is missing from the LCD.
DC Volts Ranges Resolution Accuracy 400mV, 4V, 40V, 400V, 600V 0.1mV ±(0.5% rdg + 2 dgts) Input impedance: 400mV: >100Me; 4V: 10Me; 40V ~ 600V: 9.1Me Overload protection: 600VDC or AC rms AC Volts (50Hz - 500Hz) Ranges Resolution Accuracy 4V, 40V, 400V 1mV ±(1.2% rdg + 5 dgts) on 4V to 400V ranges 600V 1mV ±(1.5% rdg + 5 dgts) on 600V range Input impedance: 4V: 10Me; 40V ~ 600V: 9.1Me Overload protection: 600VDC or AC rms AC Current (50Hz - 60Hz) Ranges Resolution Accuracy 40A, 400A 0.
Capacitance (ACD-21SW only) Ranges Resolution Accuracy 4μF 1nF ±(3.0% rdg + 15 dgts) 40μF, 400μF 1nF ±(3.0% rdg + 5 dgts) 4mF 1nF ±(5.0% rdg + 20 dgts) Minimum input range: >100nF 4nF, 40nF, 400nF ranges unspecified When the capacitor to be tested is connected, if “dS.C” symbol indicates on LCD, it means there is voltage existing in the tested capacitor and need to be discharged before testing.
Diode Test (ACD-20SW only) Test current: 0.8mA (approximate) Accuracy: ±(3.0% rdg + 3 dgts) Resolution: 10mV Open circuit volts: 3.0Vdc typical Audible indication: < 0.25V Overload protection: 600VDC or AC rms Battery Replacement • Power is supplied by 1.5 volt battery x2 (LR03/SIZE AAA ). • The “ “ appears on the LCD display when replacement is needed. • To replace the battery, remove the two screws from the back of the meter and lift off the front case. • Remove the battery from case bottom.
ACD-20SW Fig.1 Measuring DC Voltage Fig.3 Measuring AC Current 12 Fig.2 Measuring AC Voltage Fig.
Fig.5 Fig.7 Measuring Resistance Fig.
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