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Summary of Contents for Amprobe AM-270
- Page 1 AM-270 Industrial Multimeter with Bar-graph Display Users Manual • Mode d’emploi • Bedienungshandbuch • Manual d’Uso • Manual de uso...
- Page 3 AM-270 Industrial Multimeter with Bar-graph Display Users Manual May 2010, Rev.1 ©2010 Amprobe Test Tools. All rights reserved. Printed in Taiwan...
- Page 4 “Where to Buy” section on www.amprobe.com for a list of distributors near you. Additionally, in the United States and Canada In-Warranty repair and replacement units can also be sent to a Amprobe® Test Tools Service Center (see next page for address). Non-Warranty Repairs and Replacement – US and Canada Non-warranty repairs in the United States and Canada should be sent to a Amprobe®...
- Page 5 AM-270 Industrial Multimeter with Bar-graph Display 3-4/5 digits 5000 counts LCD display Push-buttons for special functions & features Selector to turn the Power On or Off and select a function Input Jack for 10A (20A for 30sec) current function Input Jack for all functions EXCEPT current (µA, mA, A) functions...
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Page 6: Table Of Contents
CONTENTS SYMBOLS .......................1 UNPACKING AND INSPECTION ................3 FEATURES .......................3 OPERATION ......................4 DC Voltage, AC Voltage, & Hz Frequency Functions ........4 Capacitance, Diode Test Function ............5 Temperature Function ..................6 Resistance, Continuity Functions ............8 Auto Leads Resistance Calibration ..............8 µA, mA, and A Current Functions ..............9 PC-COMM Computer Interface Capabilities ...........10 50ms MAX/MIN at Fast 20/s Measurement Mode ...........10 0.8ms CREST Capture Mode ................10... -
Page 7: Symbols
SYMBOLS � Caution ! Risk of electric shock � Caution ! Refer to the explanation in this Manual � Double Insulation or Reinforced insulation � Alternating Current (AC). � Direct Current (DC). Fuse � Earth (Ground) Please remove all the test leads before preforming maintenance, �... - Page 8 Measurement Category IV (CAT IV) is for measurements performed at the source of the low-voltage installation. Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units. Measurement Category III (CAT III) is for measurements performed in the building installation.
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Page 9: Unpacking And Inspection
The instruments conform to CENELEC Low-voltage directive 2006/95/EC and Electromagnetic compatibility directive 2004/108/EC UNPACKING AND INSPECTION Your shipping carton should include: 1 AM-270 Meter 1 Test Leads (1 pair) 1 K Type thermal couple with banana plug 1 Users Manual 1 Single Alkaline 9V battery;... -
Page 10: Operation
• Overheated transformers, generators and motors to burn out faster than normal • Circuit breakers to trip prematurely • Fuses to blow • Neutrals to overheat due to the triplen harmonics present on the neutral • Bus bars and electrical panels to vibrate Crest Factor Crest Factor is the ratio of the Crest (instantaneous peak) value to the True RMS value, and is commonly used to define the dynamic range of a True RMS... -
Page 11: Capacitance, Diode Test Function
Note: Input sensitivity varies automatically with function range selected before activating the Hz function. mV function has the highest (300mV) and the 1000V range has the lowest (300V). It is recommended to first measure the signal voltage (or current) level then activate the Hz function in that voltage (or current) range to automatically set the most appropriate trigger level. -
Page 12: Temperature Function
Normal forward voltage drop (forward biased) for a good silicon diode is between 0.400V to 0.900V. A reading higher than that indicates a leaky diode (defective). A zero reading indicates a shorted diode (defective). An OL indicates an open diode (defective). Reverse the test leads connections (reverse biased) across the diode. - Page 13 Note: Be sure to insert the banana plug K-type temperature bead probe Bkp60 with correct polarities.
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Page 14: Resistance, Continuity Functions
Resistance, Continuity Functions Default at . Press SELECT button momentarily to select Continuity function that is convenient for checking wiring connections and operation of switches. A continuous beep tone indicates a complete wire. �CAUTION Using resistance or continuity function in a live circuit will produce false results and may damage the meter. -
Page 15: Μa, Ma, And A Current Functions
The shortcut is to short the test leads in auto-ranging resistance mode until the meter enters the lowest 50 range automatically, press the RANGE button momentarily to get the “Shrt” prompt, then wait about 3 more seconds until the display shows zero. Note: The calibration stays until you change ranges, functions, or go back to auto-ranging mode. -
Page 16: Pc-Comm Computer Interface Capabilities
PC-COMM Computer Interface Capabilities The instrument equips with an optical isolated interface port at the meter back for data communication. Optional purchase PC interface kit USB-KIT3 is required to connect the meter to the PC computer. The USB-KIT3 Data Recording System software equips with a digital meter, an analog meter, a comparator meter, and a Data Graphical recorder display. -
Page 17: Backlighted Displaye
Backlighted Display Press the SELECT button for 1 second or more to turn on or off the display backlight function. The backlight will also be turned off automatically after 30 seconds to extend battery life. Hold The hold function freezes the display for later view. Press the HOLD button momentarily to activate or to exit the hold function Zoom 5x Analog Pointer The Zoom mode analog pointer magnifies up to 5 times the regular analog bar... -
Page 18: Relative Mode
Relative Mode Relative zero allows the user to offset the meter consecutive measurements with the displaying reading as the reference value. Practically all displaying readings can be set as relative reference value including MAX/MIN feature readings. Press the button momentarily to activate and to exit relative zero mode. -
Page 19: Beep-Jack™ Input Warning
Beep-Jack Input Warning ™ The meter beeps as well as displays “InErr” to warn the user against possible damage to the meter due to improper connections to the µA, mA, or A input jacks when other function (like voltage function) is selected. Set Beeper Off Press the Hz button while turning the meter on to disable the push button operating beeper feature. - Page 20 Pollution degree: Storage temperature: -20°C to 60°C (-4°F to 140°F), < 80% R.H. (With battery removed) Altitude: Operating below 2000m Temperature coefficient: Nominal 0.15 x (specified accuracy)/ °C @ (0°C - 18°C/32°F – 64.4°F) or 28°C - 45°C/82.4°F - 113°F), or otherwise specified Sensing: AC, AC+DC true RMS...
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Page 21: Electrical Specifications
Dimension: 186mm/7.3in (L) x 87mm/3.4in (W) x 35.5mm/1.4in (H); 198mm/7.8in (L) x 97mm/3.8in (W) x 55mm/2.2in (H) with holster Weight: 340g/0.8lb; 430g/1.0lb with holster Electrical Specifications Accuracy is (% reading digits + number of digits) or otherwise specified, at 23°c 5°c &... - Page 22 UP TO 20KHZ 50.00MV, 500.0MV 0.5DB* 5.000V, 50.00V, 500.0V 3DB* 1000V UNSPEC'D *SPECIFIED FROM 30% TO 100% OF RANGE CMRR: >60DB @ DC TO 60HZ, RS=1K Input Impedance: 10M, 16pF nominal (44pF nominal for 50mV & 500mV ranges) DC Current RANGE ACCURACY BURDEN VOLTAGE...
- Page 23 5.000A 45MV/A 0.6%+3D 10.00A* 45MV/A 40HZ --1KHZ 500.0µA 0.8%+4D 0.15MV/µA 5000µA 0.8%+4D 0.15MV/µA 50.00MA 0.8%+4D 3.3MV/MA 500.0MA 1.0%+4D 3.3MV/MA 5.000A 0.8%+4D 45MV/A 10.00A* 0.8%+4D 45MV/A *10a continuous, >10a to 15a (to 20a for cf-version) for 30 second max with 5 minutes cool down interval Ohms RANGE...
- Page 24 Frequency FUNCTION SENSITIVITY RANGE (SINE RMS) 300MV 10HZ - 125KHZ 10HZ - 125KHZ 10HZ - 20KHZ 500V 10HZ - 1KHZ 1000V 300V 10HZ - 1KHZ , CX, DIODE 300MV 10HZ - 125KHZ µA, MA, A 10% F.S. 10HZ - 125KHZ Accuracy: 0.01% + 2D Diode Tester TEST CURRENT...
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Page 25: Maintenance And Repair
Temperature RANGE ACCURACY* C TO 1000 0.3% + 3D F TO 1832 0.3% + 5D *Thermocouple range & accuracy not included MAINTENANCE AND REPAIR �WARNING To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input jacks and turn OFF the meter before opening the case. -
Page 26: Cleaning And Storage
Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents. If the meter is not to be used for periods of longer than 60 days, remove the battery and store it separately. Battery and Fuse Replacement Battery use: 9V alkaline battery NEDA1604A, JIS6AM6 or IEC6LF22...
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