Greenlee DM-45 Instruction Manual
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Greenlee DM-45 Instruction Manual

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INSTRUCTION MANUAL
DM-45
Digital
Multimeter
Read and understand all of the instructions and safety information in this manual
before operating or servicing this tool.

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Summary of Contents for Greenlee DM-45

  • Page 1 INSTRUCTION MANUAL DM-45 Digital Multimeter Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.

  • Page 2: Purpose Of This Manual

    Keep this manual available to all personnel. Do not discard this product or throw away! All specifications are nominal and may change as design improvements occur. Greenlee Textron Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

  • Page 3: Important Safety Information

    DM-45 Important Safety Information SAFETY ALERT SYMBOL This symbol is used to call your attention to hazards or unsafe practices which could result in an injury or property damage. The signal word, defined below, indicates the severity of the hazard.
  • Page 4 Important Safety Information Electric shock and fire hazard: • Do not expose this unit to rain or moisture. • Do not use the unit if it is wet or damaged. • Use test leads or accessories that are appropriate for the application. Refer to the category and voltage rating of the test lead or accessory.
  • Page 5 DM-45 Important Safety Information Electric shock hazard: The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary, refer to “Specifications” for the correct type, size, and capacity. Using any other type of fuse will void the overvoltage protection rating of the unit.
  • Page 6 Identification 1. Display 4000-count LCD 2. Feature buttons Refer to explanations in the “Using the Features” section. 3. Selector Selects a function or turns power OFF. 4. 10A Positive input terminal for high current measurements. 5. COM Negative, common, or ground input terminal for all measurements. 6.

  • Page 7: Using The Features

    DM-45 Using the Features • RANGE: Press once to enter the manual ranging mode. “AUTO” will disappear from the display. Press repeatedly to step through the ranges. Press and hold to return to the automatic ranging mode. • Hz %: Press momentarily to toggle between frequency and duty cycle functions. This button is active only when the selector is set to Hz/%.

  • Page 8: Operation

    Operation Electric shock hazard: Contact with live circuits could result in severe injury or death. 1. Refer to the Settings Table. Set the selector to the proper setting, press (when instructed to do so), and connect the test leads to the meter. 2.
  • Page 9 DM-45 Operation (cont’d) Settings Table Set the These icons will Connect Connect To measure this selector to this appear on the the red the black characteristic … symbol … display … lead to … lead to … DC Voltage (600 V max)

  • Page 10: Typical Measurements

    Typical Measurements AC Voltage Measurement DC Voltage Measurement Current Measurement...
  • Page 11 DM-45 Typical Measurements Resistance Measurement Continuity Check Capacitance Measurement Diode Measurement Reverse Bias Forward Bias...
  • Page 12 Typical Measurements Temperature...
  • Page 13 DM-45 Accuracy Refer to the “Specifications” section for operating conditions and temperature coefficient. Accuracy is specified as follows: ± (a percentage of the reading + a fixed amount) at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 75% relative humidity.
  • Page 14 Accuracy (cont’d) AC Current Range (40 Hz to 400 Hz) Accuracy Burden Voltage (typical) 400.0 µA ± (1.8% + 1.0 µA) 51 µV/µA 4000 µA ± (1.8% + 10 µA) 40.00 mA ± (1.8% + 0.10 mA) 2.7 mV/mA 400.0 mA ±...
  • Page 15 DM-45 Accuracy (cont’d) Capacitance Range Accuracy 40.00 nF ± (3.5% + 0.20 nF) 400.0 nF ± (2.5% + 0.5 nF) 4.000 µF ± (3.5% + 0.005 µF) 40.00 µF ± (4.0% + 0.05 µF) 200.0 µF ± (5.0% + 0.5 µF) Press REL before connecting test leads to capacitor.

  • Page 16: Specifications

    Specifications Display: 4000-count LCD Polarity: Automatic Numeric Display Sampling Rate: 3 per second Temperature Coefficient: Nominal 0.2 x (specified accuracy) per °C below 18 °C or above 28 °C Automatic Power Off: After 15 minutes of inactivity. To disable this feature, press any button while turning the meter on. Operating Conditions: Temperature: 0 °C to 40 °C (32 °F to 104 °F) Relative Humidity (non-condensing): 75% maximum for temperatures up to 31 °C (88 °F),...

  • Page 17: Measurement Categories

    Statement of Conformity Greenlee Textron Inc. is certified in accordance with ISO 9001 (2000) for our Quality Management Systems. The instrument enclosed has been checked and/or calibrated using equipment that is traceable to the...

  • Page 18: Maintenance

    Maintenance Electric shock hazard: Before opening the case, remove the test leads from the circuit and shut off the unit. Failure to observe this warning could result in severe injury or death. Electric shock hazard: The fuses are an integral part of the overvoltage protection. When fuse replacement is necessary, refer to “Specifications”...

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