Amprobe AM-270 Скачать руководство пользователя страница 14 | Manualshive

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Amprobe AM-270 Скачать руководство пользователя страница 14

8



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.

Auto Leads Resistance Calibration

When entering the 50



range manually by RANGE button for high precision

low resistance measurement, this feature will prompt you to short the inputs
for calibration. The display shows “Shrt”. Simply short the leads for about 3
seconds until the display shows zero, then the resistance in the leads and in the
internal protection circuitry of the meter is compensated automatically. The
compensation value can be as much as 5



. If you need a compensation value

that is higher than that, Relative mode is recommended.

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Содержание AM-270

Страница 1: ...1 Users Manual Mode d emploi Bedienungshandbuch Manual d Uso Manual de uso AM 270 Industrial Multimeter with Bar graph Display ...

Страница 2: ......

Страница 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 English ...

Страница 4: ...er Non warranty repair or replacement charges should be remitted in the form of a check a money order credit card with expiration date or a purchase order made payable to Amprobe Test Tools In Warranty Repairs and Replacement All Countries Please read the warranty statement and check your battery before requesting repair During the warranty period any defective test tool can be returned to your Am...

Страница 5: ...cial 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 ...

Страница 6: ... 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 Backlighted Displaye 11 Hold 11 Zoom 5x Analog Pointer 11 Relative Mode 12 Manual or Auto Ranging 12 Beep Jack Input Warning 13 Set Beeper Off 13 Auto Power Off APO 13 Disabling Auto Power Off 13 SPECIFICATION 13 MAINTENANCE AND REPAIR 19 Trouble Shooting 19 C...

Страница 7: ...tion and warnings that must be followed for operating the instrument safely and maintaining the instrument in a safe operating condition If the instrument is used in a manner not specified by the manufacturer the protection provided by the instrument may be impaired The meter is intended only for indoor use The meter protection rating against the users is double insulation per IEC61010 1 2nd Ed EN...

Страница 8: ...ions when working with voltages above 60 VDC or 30 VAC rms These voltage levels pose a potential shock hazard to the user Do not touch test lead tips or the circuit being tested while power is applied to the circuit being measured Keep your fingers behind the finger guards of the test leads during measurement Inspect test leads connectors and probes for damaged insulation or exposed metal before u...

Страница 9: ...librated RMS Root Mean Square is the term used to describe the effective or equivalent DC value of an AC signal Most digital multimeters use average sensing RMS calibrated technique to measure RMS values of AC signals This technique is to obtain the average value by rectifying and filtering the AC signal The average value is then scaled upward calibrated to read the RMS value of a sine wave In mea...

Страница 10: ...cation of 60dB at 50 and 60Hz which is a good and definite ability to reject the effect of AC noise when making DC measurements CMRR Common Mode Rejection Ratio Common mode voltage is voltage present on both the COM and VOLTAGE input terminals of a DMM with respect to ground CMRR is the DMM s ability to reject common mode voltage effect that can cause digit rolling or offset in voltage measurement...

Страница 11: ...tomatically set the most appropriate trigger level You can also press the RANGE button momentarily to select another trigger level manually If the Hz reading becomes unstable select lower sensitivity to avoid electrical noise If the reading shows zero select higher sensitivity Capacitance Diode Test Function Default at Press SELECT button momentarily to select Diode test function CAUTION Discharge...

Страница 12: ...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 Temperature Function Press SELECT button momentarily to toggle between C and F readings and the new setting will be saved automatically in the non volatile memory as power...

Страница 13: ...7 Note Be sure to insert the banana plug K type temperature bead probe Bkp60 with correct polarities ...

Страница 14: ... disconnected from the circuit to obtain an accurate reading Auto Leads Resistance Calibration When entering the 50 range manually by RANGE button for high precision low resistance measurement this feature will prompt you to short the inputs for calibration The display shows Shrt Simply short the leads for about 3 seconds until the display shows zero then the resistance in the leads and in the int...

Страница 15: ...l 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 Note When measuring a 3 phase system special attention should be taken to the phase to phase voltage which is significantly higher than the phase to earth voltage To avoid exceeding the voltage rating of the protection fuse s accidentally always con...

Страница 16: ...er beeps when new maximum or minimum reading is updated Press the button momentarily to read throughout the Maximum MAX Minimum MIN and Maximum minus Minimum MAX MIN readings Press the button for 1 second or more to exit MAX MIN mode Auto Power Off feature will be disabled automatically in this mode 0 8ms CREST Capture Mode Press CREST button momentarily to activate CREST Instantaneous Peak Hold m...

Страница 17: ...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 graph resolution to show minute signal changes with a single analog pointer It is virtually equivalent to the bar graph resolution of 5 X 50 250 segments ...

Страница 18: ...ature readings Press the button momentarily to activate and to exit relative zero mode Manual or Auto Ranging Press the RANGE button momentarily to select manual ranging and the meter will remain in the range it was in the LCD annunciator turns off Press the button momentarily again to step through the ranges Press and hold the button for 1 second or more to resume auto ranging Note Manual ranging...

Страница 19: ...ing readings of above 10 of range or non OL readings That is the meter will intelligently avoid entering the APO mode when it is under normal measurements To wake up the meter from APO press the SELECT button momentarily or turn the rotary switch to the OFF position and then turn back on again Always turn the rotary switch to the OFF position when the meter is not in use Disabling Auto Power Off P...

Страница 20: ... 10kA or better F fuse A 10A 600V IR 100kA or better F fuse V 1050VRMS 1450VPEAK mV others 600 VDC VAC RMS TERMINALS TO COM MEASUREMENT CATEGORY V CATEGORY III 1000V AC DC AND CATEGORY IV 600V AC DC A mAµA CATEGORY III AND CATEGORY IV 600 VAC AND 300 VDC TRANSIENT PROTECTION 8KV 1 2 50µS SURGE E M C Meets en61326 1 2006 EN55022 EN61000 3 2 EN61000 3 3 EN61000 4 2 EN61000 4 3 EN61000 4 4 EN61000 4 ...

Страница 21: ...e specified maximum crest factor 3 1 at full scale 6 1 at half scale and with frequency spectrums besides fundamentals fall within the meter specified AC bandwidth for non sinusoidal waveforms DC Voltage RANGE ACCURACY 50 00 MV 0 12 2D 500 0 MV 0 06 2D 5 000V 50 00V 500 0V 1000V 0 08 2D NMRR 60DB 50 60HZ CMRR 120DB DC 50 60HZ RS 1K Input Impedance 10M 16pF nominal 44pF nominal for 50mV 500mV range...

Страница 22: ...V 500mV ranges DC Current RANGE ACCURACY BURDEN VOLTAGE 500 0µA 0 2 4D 0 15MV µA 5000µA 0 15MV µA 50 00MA 3 3MV MA 500 0MA 3 3MV MA 5 000A 45MV A 10 00A 45MV A 10a continuous 10a to 15a to 20a for cf version for 30 second max with 5 minutes cool down interval AC Current RANGE ACCURACY BURDEN VOLTAGE 50HZ 60HZ 500 0µA 0 6 3D 0 15MV µA 5000µA 0 15MV µA 50 00MA 3 3MV MA 500 0MA 1 0 3D 3 3MV MA ...

Страница 23: ...5a 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 3vdc 3vdc for 50 500 ranges Audible Continuity Tester Audible threshold between 20 and 200 response time 100µS Crest Mode for V A functions Accuracy specified accuracy 150 digits for changes 0 8 ms ...

Страница 24: ...Z 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 5 5D 9999µF 5 0 5D Accuracies with film capacitor or better In manual ranging mode measurements not specified below 45 0µF and 450µF for 500 0µF and 9999µF ranges respectively ...

Страница 25: ...being displayed while powering on some meter ranges might be largely out of specifications To avoid mis leading measurements stop using the meter and send it for re calibration Refer to the LIMITED WARRANTY section for obtaining warranty or repairing service Trouble Shooting If the instrument fails to operate check battery fuses leads etc and replace as necessary Double check operating procedure a...

Страница 26: ...t 10A 600V IR 100kA or better F fuse Battery replacement for models with battery access door Loosen the 2 screws from the battery access door of the case bottom Lift the battery access door and thus the battery compartment up Replace the battery Re fasten the screws Fuse replacement Loosen the 4 screws from the case bottom Lift the end of the case bottom nearest the input jacks until it unsnaps fr...

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