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TECPEL DCM-033 Operating Manual

Digital clamp multimeter
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DCM-033
Digital Clamp Multimeters

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Summary of Contents for TECPEL DCM-033

  • Page 1 DCM-033 Digital Clamp Multimeters...

  • Page 2: Table Of Contents

    Table of Contents Title Page Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Rotary Switch Functional Buttons The Effectiveness of Functional Buttons Display Symbols Measurement Operation A. DC/AC Voltage Measurement B. Measuring Resistance C.
  • Page 3 Title Page Sleep Mode Specifications A. General Specifications B. Environmental Requirements Accuracy Specifications A. DC Voltage B. AC Voltage C. Resistance D. Diode Test E. Continuity Test F. Frequency G. Duty Cycle H. DC Current I. AC Current Maintenance A. General Service B.

  • Page 4: Overview

    To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safe Operation” carefully before using the Meter. Digital Clamp Multimeter Model DCM-033 (hereafter referred to as “the Meter”) are 3 3/4 digits with steady operations, fashionable structure and highly reliable measuring instrument.

  • Page 5: Unpacking Inspection

    Unpacking Inspection Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged part: Item Description English Operating Manual 1 piece Test Lead 1 pair Test Clip 1 pair Carrying Bag 1 piece 9V Battery (NEDA1604, 6F22 or 006P) 1 piece...

  • Page 6: Safety Information

    Safety Information This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. II 600V, CAT. III 300V) and double insulation. CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient overvoltages than CAT. III. CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT.

  • Page 7: Rules For Safe Operation

    Rules For Safe Operation Warning To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, adhere to the following rules: Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed.
  • Page 8 The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prevent damage of the Meter. Do not carry out the measurement when the Meter’s back case and battery compartment are not closed to avoid electric shock.
  • Page 9 When servicing the Meter, use only the same model number or identical electrical specifications replacement parts. The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident. Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing.

  • Page 10: International Electrical Symbols

    International Electrical Symbols AC (Alternating Current) DC (Direct Current) AC or DC Grounding Double Insulated Warning. Refer to the Operating Manual Deficiency of Built-In Battery Continuity Test Diode Fuse Conforms to Standards of European Union...

  • Page 11: The Meter Structure

    The Meter Structure (see figure 1) Input Terminals LCD Display Functional Buttons Rotary Switch Trigger: press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close. Hand Guards: to protect user’s hand from touching the dangerous area.

  • Page 12: Rotary Switch

    Rotary Switch Below table indicated for information about the rotary switch positions. Rotary Switch Position Function Power is turned off AC or DC voltage measurement Resistance measurement : Diode test : Continuity test Hz / Duty% Frequency Measurement and Duty Measurement &...

  • Page 13: Functional Buttons

    Functional Buttons Below table indicated for information about the functional button operations. Button Operation Performed HOLD Press HOLD to enter the Hold mode in any mode, the Meter beeps. Press HOLD again to exit the Hold mode, the Meter beeps. range: Press to select manual ranging measurement mode.
  • Page 14 Button Operation Performed SELECT Press SELECT button to select the alternate functions marked in blue colour on the Meter’s faceplate including Hz, Duty%, , and 400 , 40 After the Meter entering Sleep Mode, press and hold SELECT to turn the Meter on, it will disable the Sleep Mode feature.

  • Page 15: The Effectiveness Of Functional Buttons

    The Effectiveness of Functional Buttons Not every functional buttons can be used on every rotary switch positions. Below table describe which functional buttons can be used on which rotary switch positions Functional Buttons Rotary Switch Positions SELECT HOLD Hz / Duty% 400A...

  • Page 16: Display Symbols

    Display Symbols (see figure 2) (figure 2)
  • Page 17 Number Symbol Meaning Indicator for AC voltage or current Indicator for DC voltage The battery is low. Warning: To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears. The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution.
  • Page 18 Number Symbol Meaning ,k ,M : Ohm. The unit of resistance. k : Kilohm. 1x10 3 or 1000 ohms M : Megohm. 1x10 6 or 1,000,000 ohms The unit of Frequency Amperes (amps). The unit of current. mV, V Volts. The unit of voltage. mV: Millivolt.

  • Page 19: Measurement Operation

    Measurement Operation A. DC/AC Voltage Measurement (see figure 3) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained. Black The DC Voltage ranges are: 400mV, 4V, 40V, 400V and 600V.
  • Page 20 Set the rotary switch to . DC mesaurement mode and auto ranging is a default. Press SELECT to switch to AC measurement mode or press to switch to manual ranging measurement mode. Connect the test leads across with the object being measured. The measured value shows on the display.

  • Page 21: Measuring Resistance

    B. Measuring Resistance (see figure 4) Warning To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring resistance. The resistance ranges are: 400 , 4k , 40k ,400k ,M and 40M .
  • Page 22 Note To obtain a more precise reading, you could remove the objects being tested from the circuit when measuring. When resistance measurement has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

  • Page 23: Testing Diodes

    C. Testing Diodes (see figure 5) Warning To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before testing diodes. Use the diode test to check diodes, transistors, and other semiconductor devices.
  • Page 24 Set the rotary switch to . Diode measurement mode is a default or presss SELECT to select measurement mode. For forward voltage drop readings on any semiconductor component, place the red test lead on the component’s anode and place the black test lead on the component’s cathode.

  • Page 25: Testing For Continuity

    D. Testing for Continuity (see figure 6) Warning To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring continuity. To test for continuity, connect the Meter as follows: Insert the red test lead into the Hz Duty% Black terminal and the black test lead into the...
  • Page 26 Note When continuity testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

  • Page 27: Frequency Measurement

    E. Frequency Measurement (see figure 7) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained. The resistance ranges are: 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz and Black 10MHz.
  • Page 28 Note When frequency measurement has been completed, disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the input terminals of the Meter.

  • Page 29: Duty Cycle Measurement

    F. Duty Cycle Measurement (see figure 8) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained. The duty cycle range is: 0.1%~99.9%. Black To measure duty cycle, connect the Meter as follows: Insert the red temperature probe into the Hz Duty%...
  • Page 30 Note When duty cycle measurement has been completed, disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the input terminals of the Meter.

  • Page 31: Dc/Ac Current Measurement

    G. DC/AC Current Measurement (see figure 9) The measuremnet ranges of current are: 40.00 and 400.0 To measure current, do the following: 400A Set the rotary switch to 40 or 400 . DC measuremnet mode is a default. Press SELECT to switch between DC and AC measurement mode.
  • Page 32 Note Press to subtracts a stored value from the present measurement value and displays a result. When current measurement has been completed, disconnect the connection between the conductor under test and the jaw, and remove the conductor away from the transformer jaw of the Meter.

  • Page 33: Sleep Mode

    Sleep Mode To preserve battery life, the Meter automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes. The Meter can be activated by turning the rotary switch or pressing the button based on ‘The Effectiveness of Functional Buttons”...

  • Page 34: Specifications

    Specifications A. General Specifications: Maximum Voltage between any Terminals and grounding: Refer to different range input protection voltage. Display: 3 3/4 digits LCD display, Maximum display 3999 Polarity: Automatically display. Overloading: Display OL or –OL Battery Deficiency: Display Measurement Speed: Updates 3 times/second. Measuremnet Deviation: The conductor being meaured is not placed in the center of the jawt during AC/DC current measurement, it will cause extra 1% deviation based on the stated accuracy.

  • Page 35: Environmental Requirements

    Battery Life: typically 150hours (alkaline battery) Sleep Mode (can be disabled) Dimensions (H x W x L): 208mm x 76mm x 30mm. Weight: Approximate 260g (battery included) B. Environmental Requirements The Meter is suitable for indoor use. Altitude: Operating: 2000m Storage: 10000m Safety/ Compliances: IEC 61010 CAT.II 600V, CAT.III 300V over voltage and double insulation standard.

  • Page 36: Accuracy Specifications

    Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23ºC 5ºC Relative humidity: 85%R.H Temperature coefficient: 0.1x(specified accuracy)/1ºC A. DC Voltage Range Resolution Accuracy Overload protection 400.0mV 0.1mV (0.8%+3) 4.000V 600V DC/AC 40.00V 10mV (0.8%+1) 400.0V 100mV 600V...

  • Page 37: Ac Voltage

    Input impedance: 10M // less than 100pF Frequency response: 40Hz~400Hz. Change to AC: DCM-033: Change to AC by using average response method. Input sine wave, then adjust the reading until it is same as the effective value. DCM-033T(Not Available) Combine AC and True RMS response method. Input sine wave to adjust. Non sine wave must follow the below data to adjust: Peak factor: 1.4~2.0, add 1.0% on the stated accuracy...

  • Page 38: Resistance

    C. Resistance Range Resolution Accuracy Overload protection 400.0 100m (1.2%+2) 4.000k 600Vp 40.00k (1%+2) 400.0k 4.000M (1.2%+2) 40.00M (1.5%+2) D. Diode Test Range Resolution Accuracy Overload protection Display forward voltage 600Vp drop nearest value Remark: Open circuit voltage approximate 1.48V.

  • Page 39: Continuity Test

    E. Continuity Test Range Resolution Accuracy Overload protection Around 50 , 100m 600Vp the buzzer beeps Remark: Open circuit voltage approximate 0.45V. The buzzer may or may not beeps when the resistance of a circuit under test is between 50 ~100 The buzzer will not beep when the resistance of a circuit under test is >...

  • Page 40: Frequency

    F. Frequency Range Resolution Accuracy Overload protection 10Hz 0.001Hz 100Hz 0.01Hz 1kHz 0.1Hz 600Vp (0.1%+3) 10kHz 100kHz 10Hz 1MHz 100Hz For reference only 10MHz 1kHz Remark: Input Sensitivity as follows: When 100kHz: 300mV rms; When > 100kHz: 600mV rms When > 1MHz: 800mV rms...

  • Page 41: Duty Cycle

    G. Duty Cycle Range Resolution Accuracy Overload protection 0.1%~99.9% 0.1% For reference only 600Vp H. DC Current Range Resolution Accuracy Overload protection 40.00A 0.01A (2%+5) 400A DC/AC 400.0A 0.1A (2%+3) Warning The operating temperature must be 0ºC ~40ºC when measuring current. Remark: If the reading is positive, the current direction is from bottom to up.
  • Page 42 also to heat and machines reaction force. Any shock will cause the changing in reading in the short time. Follow the below procedure to measure current will be more precise: Hold the Meter tight and press the lever to open the transformer jaw. Center the conductor within the transformer jaws, then release the Meter slowly until the transformer jaw is completely closed.

  • Page 43: Ac Current

    I. AC Current Range Resolution Accuracy Frequency Response Overload protection 40.00A 0.01A (2.5%+8) 400A DC/AC 50Hz ~ 60Hz 400.0A 0.1A (2.5%+5) Warning The operating temperature must be 0ºC ~40ºC when measuring current. Remark: It may have 10 digits or less unstable or wrong digits, it will not affect measurement result.
  • Page 44 Repeat the above 1. procedure. The obtained reading will be more precise. l Change to AC: DCM-033: Change to AC by using average response method. Input sine wave, then adjust the reading until it is same as the effective value.

  • Page 45: Maintenance

    MAINTENANCE This section provides basic maintenance information including battery replacement instruction. Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. To avoid electrical shock or damage to the Meter, do not get water inside the case. A.

  • Page 46: Replacing The Battery

    B. Replacing the Battery (see figure 10) Warning Screw To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator “ ” appears. Make sure the transformer jaw and the tets leads are disconected from the circuit being tested before opening the case bottom.

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