Clarke CDM20 Instruções de Operação

0607DIGITAL MULTIMETERModel No: CDM20PartNo: 4500007

CDM-20 Page-92.1 POWER SWITCHA push - push switch is used to turn the meter on or off.2.2 DISPLAY3 ½ digit, 7 segment, 18mm high LCD.2.3 FUNCTION AND

CDM-20 Page-103. OPERATING INSTRUCTIONS3.1 MEASURING VOLTAGE1. Connect the black test lead to the COM jack and the red test lead to the V/Q jack.2. Se

CDM-20 Page-113.2 MEASURING CURRENT1. Connect the black test lead to the COM jack and the red test lead to the A jack for a maximum of2A current For a

CDM-20 Page-123.3 MEASURING RESISTANCE1. Connect the black test lead to the COM jack and the red test lead to the V/Ω jack. (The polarity ofred lead i

CDM-20 Page-133.4 TESTING DIODE1. Connect the black test lead to the COM jack and the red test lead to the V/Ω jack. (The polarity ofred lead is “+”.

CDM-20 Page-144.SPECIFICATIONSAccuracy is specified for a period one year after calibration and at 18º C to 28º C (64º F to 82º F) withrelative humidi

CDM-20 Page-15Polarity indication ... “-” displayed for negative polarity.Operating Tempe

CDM-20 Page-164.2 DC VOLTAGERange Accuracy Resolution200mV 100µV 2V 1mV 20V ± 0.5% of rdg ±1 digits 10mV200V l00mV1000V lVInput Impedance: 10MΩ on all

CDM-20 Page-174.3 AC VOLTAGERange Accuracy Resolution200mV ±1.2 % of rdg + 3 digits 100µV 2V 1 mV 20V ±0.8 % of rdg + 3 digits 10mV200V l00mV700V ±1.2

CDM-20 Page-184.4 DC CURRENTRange Accuracy Resolution20µA ± 2.0 % of rdg+ 5 digits 10nA200µA 0.1µA2mA ±0.8% of rdg + 1 digits 1µA20mA 10µA200mA ± 1.2

WARNINGBefore attempting to open the case, Always be sure that test leads have been disconnected frommeasurement circuits. Close case and tighten scre

CDM-20 Page-194.5 AC CURRENTRange Accuracy Resolution20µA ±3.0% of rdg + 7digits l0nA200µA 0 .1µA2mA ±1.0% of rdg + 3digits 1µA20mA 10µA200mA ± 1.8% o

CDM-20 Page-204.6 RESISTANCERange Accuracy Resolution200Ω ±0.5% of rdg + 3 digits 0.1Ω2KΩ 1Ω20KΩ ±0.5% of rdg + 1 digit 10Ω200kΩ 100Ω2MΩ 1 KΩ20MΩ ±1.0

CDM-20 Page-214.7 Diode and Audible Continuity TestRange Description Test Condition Display read approximate forward Forward DC current approximately

CDM-20 Page-225. ACCESSORIESTest leads Electric Rating 1500V, 10A MASTECH HYTL — 095Battery 9V NEDA 1604 or 6F22Operating Manual HYS0043436. BATTERY &

Thank you for purchasing this CLARKE Digital Multimeter.Please read this leaflet thoroughly and follow the instructions carefully, in doing so you can

CONTENTS PAGE1. SAFETY INFORMATION ... 11.1 PRELIMINARY

CDM-20 Page-43.6 CONTINUITY TEST ... 124. SPECI

1. SAFETY PRECAUTIONSThis multimeter has been designed according to lEG-lOb concerning electronic measuring instruments withan overvoltage category (C

1.2 DURING USE❉ Never exceed the protection limit values indicated in specifications for each range of measurement.❉ When the meter is linked to measu

1.3 SYMBOLSImportant safety information, refer to the operating manual.Dangerous voltage may be present.Earth ground.Double insulation ( Protection cl

2. DESCRIPTIONThis meter is a compact, rugged, battery operated,handheld 3 ½ digit multimeter, capable ofperforming the following functions:• DC and A