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CEM DT-932N Operating Instruction

True rms autoranging multimeter
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OPERATING INSTRUCTION
True RMS
AUTORANGING MULTIMETER
MAX
Ω
F
C
V
10A
COM
MAX
every
15 min.

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Summary of Contents for CEM DT-932N

  • Page 1 OPERATING INSTRUCTION True RMS AUTORANGING MULTIMETER Ω every 15 min.

  • Page 2: Safety Information

    SAFETY INFORMATION The following safety information must be observed to insure maximum personal safety during the operation at this meter: Do not use the meter if the meter or test leads look damaged,  or if you suspect that the meter is not operating properly. Never ground yourself when taking electrical measurements.

  • Page 3: Safety Symbols

    Never apply voltage or current to the meter that exceeds the  specified maximum: SAFETY SYMBOLS This symbol adjacent to another symbol, terminal or operating device indicates that the operator must refer to an explanation in the Operating Instructions to avoid personal injury or damage to the meter. WARNING This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could...

  • Page 4: Controls And Jacks

    that may, in normal use, be subjected to particularly hazardous voltages. For maximum safety, the meter and its test leads should not handled when these terminals energized. CONTROLS AND JACKS Ω every 15 min. 6000 count Liquid Crystal Display with symbolic signs Function switch 10A (positive) input jack for 10A DC or AC measurements...

  • Page 5: Symbols And Annunciators

    HOLD & Backlight pushbutton Max/Min pushbutton Range/ .Diode pushbutton HZ/% pushbutton AC Voltage Detector Sensor AC Voltage Detector indicator light SYMBOLS AND ANNUNCIATORS Continuity Low Battery Diode HOLD Data Hold AUTO AutoRanging Alternating Current or Voltage Direct Current or Voltage SPECIFICATIONS The instrument complies with: EN61010-1.
  • Page 6 Polarity: Automatic, (-) negative polarity indication. Overrange: “OL” mark indication. AC Response: True RMS (50 Hz or 60 Hz) True RMS: The term stands for “Root-Mean-Square,” which represents the method of calculation of the voltage or current value. Average responding multimeters are calibrated to read correctly only on sine waves and they will read inaccurately on non-sine wave or distorted signals.
  • Page 7 Weight: Approx.:255g. Accuracy is given at 18 o C to 28 o C (65 o F to 83 o F), less than 70 % RH DC Voltage Range Resolution Accuracy 600.0mV 0.1mV +0.5% of rdg + 2 dgts 6.000V +1.2% of rdg + 2 dgts 60.00V 10mV 600.0V...
  • Page 8 Overload Protection: 10A / 250V Fuse. Maximum Input: 10A dc or ac rms on 10A DC range. AC Current Range Resolution Accuracy +3.0% of rdg + 5 dgts 10mA Overload Protection: 10A / 250V Fuse. Frequency Range: 50 to 60 Hz Maximum Input: 10A dc or ac rms on 10A AC range.
  • Page 9 40.00uF 10nF 400.0uF 0.1uF +5.0% of rdg + 5 dgts 4000uF +5.0% of rdg + 5 dgts Maximum Input: 00V dc or 00V ac rms. Frequency (Auto-ranging) Range Resolution Accuracy 9.999Hz 0.001Hz +1.5% of rdg + 5 dgts 99.99Hz 0.01Hz 999.9Hz 0.1Hz 9.999kHz...

  • Page 10: Operation

    Diode Test Test current Resolution Accuracy 0.3mA 1 mV +10% of rdg + 5 dgts typical Open circuit voltage: 1.5V dc typical Overload protection: 600V dc or ac rms. Audible continuity Audible threshold: Less than 100Ω; Test current: <0.3mA Overload protection: 600V dc or ac rms. OPERATION WARNING: Risk of electrocution.

  • Page 11: Autoranging/Manual Range Selection

    NOTE: On some low AC and DC voltage ranges, with the test leads not connected to a device, the display may show a random, changing reading. This is normal and is caused by the high-input sensitivity. The reading will stabilize and give a proper measurement when connected to a circuit. AUTORANGING/MANUAL RANGE SELECTION When the meter is first turned on, it automatically goes into Autoranging.

  • Page 12: Display Backlight

    MAX/MIN Note: When using the MAX/MIN function in Autoranging mode, the meter will “lock” into the range that is displayed on the LCD when MAX/MIN is activated. If a MAX/Min reading exceeds that range, an “OL” will be displayed. Select the desired range BEFORE entering MAX/MIN mode.

  • Page 13: Non-Contact Voltage (Ncv)

    HOLD The hold function freezes the reading in the display. Press the HOLD key momentarily to activate or to exit the HOLD function. NON-CONTACT VOLTAGE (NCV) The NCV function works on any rotary switch position. 1.Test the detector on a known live circuit before use. 2.Hold the top of the meter very close to the voltage source as shown.

  • Page 14: Ac Voltage Measurements

    the correct polarity (red lead to positive, black lead to negative). Read the voltage in the display. The display will indicate the proper decimal point and value. If the polarity is reversed, the display will show (-) minus before the value. AC VOLTAGE MEASUREMENTS WARNING: Risk of Electrocution.

  • Page 15: Dc Current Measurements

    proper decimal point, value and symbol (AC, V, etc.). DC CURRENT MEASUREMENTS CAUTION: Do not make current measurements on the 10A scale for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads. 1.

  • Page 16: Ac Current Measurements

    AC CURRENT MEASUREMENTS WARNING: To avoid electric shock, do not measure AC current on any circuit whose voltage exceeds 250V AC. CAUTION: Do not make current measurements on the 10A scale for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads.

  • Page 17: Resistance Measurements

    RESISTANCE MEASUREMENTS WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords. 1. Set the function switch to the Ω position. 2.

  • Page 18: Diode Test

    will sound. The display will also show the actual resistance. DIODE TEST WARNING: To avoid electric shock, do not test any diode that has voltage on it. 1. Set the function switch to position. 2. Press the button until the symbol appears in the display.

  • Page 19: Frequency Measurement

    FREQUENCY MEASUREMENT 1. Set the function switch to the FREQ position. 2. Insert the black test lead banana plug into the negative (-) jack (COM) and the red test lead banana plug into the positive (+) jack (F). 3. Touch the test probe tips to the circuit under test. 4.

  • Page 20: Temperature Measurements

    TEMPERATURE MEASUREMENTS WARNING: To avoid electric shock, disconnect both test probes from any source of voltage before making a temperature measurement. 1. If you wish to measure temperature in F, set the function switch to F range. If you wish to measure temperature in C, set the function switch to the C range.

  • Page 21: Replacing The Battery

    REPLACING THE BATTERY WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery door. When the batteries become exhausted or drop below the operating voltage, “BAT” will appear in the right-hand side of the LCD display. The battery should be replaced.

  • Page 22: Replacing The Fuses

    WARNING: To avoid electric shock, do not operate the meter until the battery door is in place and fastened securely. NOTE: If your meter does not work properly, check the fuses and battery to make sure that they are still good and that they are properly inserted. REPLACING THE FUSES WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the fuse door.

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