AM-270 Industrial Multimeter with Bar-graph Display Users Manual • • • • Mode d’emploi Bedienungshandbuch Manual d’Uso Manual de uso 1
AM-270 Users Manual May 2010, Rev.1 ©2010 Amprobe Test Tools. All rights reserved.
Limited Warranty and Limitation of Liability Your Amprobe product will be free from defects in material and workmanship for 1 year from the date of purchase. This warranty does not cover fuses, disposable batteries or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Amprobe’s behalf.
AM-270 Industrial Multimeter with Bar-graph Display 1 3-4/5 digits 5000 counts LCD display 2 Push-buttons for special functions & features 3 Selector to turn the Power On or Off and select a function 4 Input Jack for 10A (20A for 30sec) current function 5 Input Jack for all functions EXCEPT current (µA, mA, A) functions 6 Common (Ground reference) Input Jack for all functions 7 Input Jack for milli-amp and micro-amp current functions
CONTENTS SYMBOLS................................................................................................................1 UNPACKING AND INSPECTION..............................................................................3 FEATURES................................................................................................................3 OPERATION.............................................................................................................
SYMBOLS � � � � � Caution ! Risk of electric shock Fuse � Earth (Ground) Caution ! Refer to the explanation in this Manual Double Insulation or Reinforced insulation Alternating Current (AC). Direct Current (DC). � Please remove all the test leads before preforming maintenance, cleaning, battery replacement, fuse replacement, etc � � Complies with European Directives = Conforms to relevant Australian standards Do not dispose of this product as unsorted municipal waste.
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.
CENELEC Directives 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; NEDA1604A, JIS6AM6 OR IEC6LF22(Installed) If any of the items are damaged or missing, return the complete package to the place of purchase for an exchange.
• 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 DMM. A pure sinusoidal waveform has a Crest Factor of 1.4.
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. You can also press the RANGE button momentarily to select another trigger level manually.
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. The digital display shows OL if the diode is good. Any other readings indicate the diode is resistive or shorted (defective).
Note: Be sure to insert the banana plug K-type temperature bead probe Bkp60 with correct polarities.
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. In many cases the suspected component must be disconnected from the circuit to obtain an accurate reading.
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. µA, mA, and A Current Functions Default at DC. Press SELECT button momentarily to select AC.
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. Refer to the README file in the interface kit for further details.
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.
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 button momentarily to activate and to exit relative zero readings. Press the mode. Manual or Auto-Ranging Press the RANGE button momentarily to select manual-ranging, and the meter turns off.
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. However, the continuity and Jack Beep input warning features remain.
Pollution degree: 2 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 Safety: Double insulation per iec61010-1 2nd ed., En61010-1 2nd ed., Ul61010-1 2nd ed. & Can/csa c22.2 No. 61010.1-0.
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 & less than 75% relative humidity. ACV & ACA accuracies are specified from 5 % to 100 % of range or otherwise specified.
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 500.0µA 0.15MV/µA 5000µA 0.15MV/µA 50.00MA 500.0MA 0.2%+4D 3.3MV/MA 3.3MV/MA 5.000A 45MV/A 10.
5.000A 0.6%+3D 10.00A* 45MV/A 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 ACCURACY 50.00 0.3% + 6D 500.0 0.1% + 3D 5.000K, 50.00K, 500.0K 0.1% + 2D 5.000M 0.4% + 3D 50.00M 2.0% + 5D open circuit voltage : < 1.
Frequency FUNCTION SENSITIVITY (SINE RMS) RANGE MV 300MV 10HZ - 125KHZ 5V 2V 10HZ - 125KHZ 50V 20V 10HZ - 20KHZ 500V 80V 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 RANGE ACCURACY TEST CURRENT (TYPICAL) OPEN CIRCUIT VOLTAGE 2.000V 1%+1D 0.4MA < 3.5 VDC Capacitance RANGE ACCURACY* 50.00nF 0.8% + 3D 500.0nF 0.8% + 3D 5.000µF 1.5% + 3D 50.00µF 2.5% + 3D 500.0µF** 3.
Temperature RANGE ACCURACY* -50 OC TO 1000 OC 0.3% + 3D -58 F TO 1832 F 0.3% + 5D O O *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. Do not operate with open case. Install only the same type of fuse or equivalent Calibration Periodic calibration at intervals of one year is recommended to maintain meter accuracy.
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.
