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Summary of Contents for Clarke CDM90
- Page 1 PROFESSIONAL DIGITAL CLAMPMETER - 6 FUNCTION MODEL No: CDM90 Part No: 4500097 OPERATING & MAINTENANCE INSTRUCTIONS GC0111...
- Page 2 GUARANTEE This CLARKE product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase. Please keep your receipt as proof of purchase. This guarantee is invalid if the product is found to have been abused or tampered with in any way, or not used for its intended purpose.
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Page 3: Table Of Contents
CONTENTS SAFETY INFORMATION ..........Preliminary ......................During Use ......................Symbols ......................DESCRIPTION .............. Components of the Meter ................ The LCD (Liquid Crystal Display) .............. OPERATION INSTRUCTIONS ........... Holding Readings ................... Backlight ......................Measuring AC Current ................. Measuring AC Voltage ................Measuring DC Voltage ................ -
Page 4: Safety Information
SAFETY INFORMATION WARNING Take care when using this meter. Improper use can result in electric shock or damage to the meter. Take all normal safety precautions and follow the safeguards suggested in this manual. PRELIMINARY When using the meter, the user must observe all normal safety rules concerning: General protection against electric shock Protection of the meter against misuse. -
Page 5: Symbols
Stop using the meter if any abnormalities or faults are observed. Do not use the meter unless its rear case and battery cover are correctly and securely fastened. Do not store or use the meter in areas exposed to direct sunlight, at high temperature or with high relative humidity. -
Page 6: Description
DESCRIPTION This meter is a portable, professional, measuring instrument with a Liquid Crystal Display (LCD) and back light for easily reading. The meter can perform measurements of AC current, AC/DC voltage, as well as resistance, continuity and diode testing. -
Page 7: Components Of The Meter
COMPONENTS OF THE METER Moving Jaw Measures AC current flowing through the conductor HOLD Button When this button is pressed, the display will keep the last reading and “H” symbol will appear on the LCD until the button is pressed again. -
Page 8: The Lcd (Liquid Crystal Display)
THE LCD (Liquid Crystal Display) Alternating current Direct current Diode test Continuity buzzer Battery low This indicates that the display data is being held. Voltage Amperes (Current) Ω, kΩ, MΩ Ohms, Kilo-ohms, Mega-ohms (Resistance) Outside recommended working temperature range Voltage or current should not exceed the specified value Kilohertz (Frequency) -
Page 9: Operation Instructions
OPERATION INSTRUCTIONS Switch on the power by pressing the ON/OFF button. Turn the rotary selector to the required function and range to be measured. Choose the highest range when the value of the voltage or current to be measured is unknown. Connect the black earth test lead before the red positive test lead when making the connection. -
Page 10: Measuring Ac Current
MEASURING AC CURRENT Ensure the test leads are disconnected from the meter before making current clamp measurements. Set the rotary selector to the A range position. Squeeze the trigger to open the jaw. Fully enclose only one conductor. Take the reading showing on the LCD. NOTE: •... -
Page 11: Measuring Dc Voltage
± ± s t i • Input impedance 10MΩ • Frequency range: 40 to 400Hz • Response average, calibrated in rms of sine wave NOTE: • At the low voltage range, unsteady readings may appear before the test leads touch the circuit due to the sensitivity of the meter. When the test leads touch the circuit, the true reading will be shown. -
Page 12: Measuring Resistance
MEASURING RESISTANCE When measuring in-circuit resistance, make sure that the circuit under test has been turned off and that all capacitors have been fully discharged. Connect the red test lead into the Ω jack & the black lead into the COM jack. Set the rotary selector to the W range position. -
Page 13: Continuity Testing
CONTINUITY TESTING Plug the black test lead into the COM jack & the red lead into the Ω jack. Set the range switch to the position. Connect the test leads to the two ends of the circuit for measurement. If continuity exists, the built-in buzzer will sound. -
Page 14: Maintenance
MAINTENANCE GENERAL CARE Switch off the power when the meter is not in use. If the meter will remain unused for a long time, remove the battery and store it in the carry case to avoid possible damage. Do not attempt to remove the rear case to adjust or repair the meter. Such actions should only be performed by a technician who fully understands the meter and the dangers involved. -
Page 15: Declaration Of Conformity
DECLARATION OF CONFORMITY...
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