Table of Contents
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Table of Contents
Related Manuals for Extech Instruments MN25
Summary of Contents for Extech Instruments MN25
- Page 1 User's Guide MiniTec Series Model MN25 MultiMeter...
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Page 2: Warranty
Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies on sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890- 7440 ext. - Page 3 ALWAYS discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests. ALWAYS turn off the power and disconnect the test leads before opening the doors to replace the fuse or batteries. MN25 Version 2.2 Aug 2003...
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Page 4: Safety Symbols
For maximum safety, the meter and its test leads should not be handled when these terminals are energized. This symbol indicates that a device is protected throughout by double insulation or reinforced insulation. MN25 Version 2.2 Aug 2003... -
Page 5: Specifications
• (% reading) – This is the accuracy of the measurement circuit. • (+ digits) – This is the accuracy of the analog to digital converter. NOTE: Accuracy is stated at 65 F to 83 F (18 C to 28 C) and less than 75% RH. MN25 Version 2.2 Aug 2003... - Page 6 4.78 x 2.38 x 1.57” (121.5 x 60.6 x 40mm) Safety For indoor use and in accordance with Overvoltage Category II, Pollution Degree 2. Category II includes local level, appliance, portable equipment, etc., with transient overvoltages less than Overvoltage Category III. MN25 Version 2.2 Aug 2003...
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Page 7: Meter Description
Diode test milli ( volts, amps) kilo (ohms) Ω ohms V DC volts direct current V AC volts alternating current A DC amps direct current A AC amps alternating current Low battery and battery test MN25 Version 2.2 Aug 2003... -
Page 8: Operation
4. Read the voltage in the display. Reset the function switch to successively lower V positions to obtain a higher resolution reading. The display will indicate the proper decimal point and value. If the polarity is reversed, the display will show (-) minus before the value. MN25 Version 2.2 Aug 2003... - Page 9 4. Read the voltage in the display. Reset the function switch to successively lower V positions to obtain a higher resolution reading. The display will indicate the proper decimal point and value. MN25 Version 2.2 Aug 2003...
- Page 10 Touch the red test probe tip to the positive side of the circuit. 6. Apply power to the circuit. 7. Read the current in the display. The display will indicate the proper decimal point and value. MN25 Version 2.2 Aug 2003...
- Page 11 Touch the red test probe tip to the positive side of the circuit. 6. Apply power to the circuit. 7. Read the current in the display. The display will indicate the proper decimal and value. MN25 Version 2.2 Aug 2003...
- Page 12 9V battery and the black test lead to the negative side of the 1.5V or 9V battery. 4. Read the voltage in the display. Good Weak 9V battery: >8.2V 7.2 to 8.2V <7.2V 1.5V battery: >1.35V 1.22 to 1.35V <1.22V MN25 Version 2.2 Aug 2003...
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Page 13: Continuity Check
3. Touch the test probe tips to the circuit or wire you wish to check. 4. If the resistance is less than approximately 30Ω, the audible signal will sound. If the circuit is open, the display will indicate “1”. MN25 Version 2.2 Aug 2003... -
Page 14: Maintenance
6. Always use a fuse of the proper size and value (0.2A/250V fast blow for the 200mA range, 10A/250V fast blow for the 10A range). 7. Put the fuse door back in place. Insert the screw and tighten it securely. MN25 Version 2.2 Aug 2003... -
Page 15: Calibration And Repair Services
Tech support: Ext. 200; Email: support@extech.com Repair/Returns: Ext. 210; Email: repair@extech.com Website: www.extech.com Copyright © 2003 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form. MN25 Version 2.2 Aug 2003...