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Summary of Contents for Greenlee DM-25
- Page 1 INSTRUCTION MANUAL DM-25 Digital Multimeter 52059485 REV 1 © 2012 Greenlee Textron Inc. 1/12...
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Page 2: Purpose Of This Manual
Description The Greenlee DM-25 Digital Multimeter is a hand-held testing device with the following measurement capabilities: AC and DC voltage, and resistance. This meter also checks diodes, verifies continuity, and tests 1.5 V and 9 V batteries. Safety Safety is essential in the use and maintenance of Greenlee tools and equip- ment. -
Page 3: Important Safety Information
DM-25 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. The message after the signal word provides information for preventing or avoiding the hazard. - Page 4 Important Safety Information Electric shock hazard: Contact with live circuits could result in severe injury or death. Electric shock hazard: • The test leads supplied with this product comply with IEC 61010- 031:2008, UL 61010-031:2010 and CAN/CSA-C22.2 NO. 61010-031A- 07–Amendment 1:2010. These safety standards limit the exposed length of the probe tip to 4 mm for measurement category III.
- Page 5 DM-25 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. • Inspect the test leads before use. They must be clean and dry, and the insulation must be in good condition.
- Page 6 Important Safety Information Electric shock hazard: Do not change the measurement function while the test leads are connected to a component or circuit. Failure to observe this precaution may result in injury and can damage the unit. Electric shock hazard: • Do not attempt to repair this unit.
- Page 7 DM-25 Identification 1. LCD display 2. Selector to select a function or turn power off 3. Permanently attached test leads and probes Display Icons 4. HV 600 V AC or DC range selected 5. – Polarity indicator Low battery indicator 7.
- Page 8 Using the Test Leads Electric shock hazard: The test leads supplied with this product comply with IEC 61010-031:2008, UL 61010-031:2010 and CAN/CSA-C22.2 NO. 61010-031A-07–Amendment 1:2010. These safety standards limit the exposed length of the probe tip to 4 mm for measurement category III. These test leads include a cap that must be in place when used in measurement category III applications.
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Page 9: Operation
• If the unit does not function as expected on a known functioning circuit, replace the battery. • If the unit still does not function as expected, call Greenlee for technical assistance at 800-435-0786. 4. Take the reading from the circuit or component to be tested. If the resolu- tion is not satisfactory, remove the meter from the circuit and change to the next lower range. -
Page 10: Typical Measurements
Typical Measurements AC Voltage Measurement Resistance 2000k Measurement... - Page 11 DM-25 Typical Measurements Continuity Check Diode Measurement Reverse Bias Forward Bias 2000 Red Probe...
- Page 12 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. Accuracy is specified from 5% to 100% of the range unless noted otherwise.
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Page 13: Specifications
DM-25 Accuracy (con’t) Battery Test Test Current: Approximately 30 mA for 1.5 V, 8 mA for 9 V Accuracy: ± (5% + 0.1 V) Diode Test Measuring Range: 2000 mV (on 2000 Ω setting) Test Current (typical): 1.0 mA Open Circuit Voltage (typical): < 3 V Continuity Tone Threshold: Between 30 Ω... -
Page 14: 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... -
Page 15: Maintenance
DM-25 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. Battery Replacing the Battery Cover 1. Disconnect the unit from the circuit.
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