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Summary of Contents for Megger AVO 840
- Page 1 ® Register TRMS 1000 V AC/DC Digital megger.com/register Multimeter with Low-Z Firmware updates megger.com product page User Guide Support megger.com/support English...
- Page 2 Megger Limited, Archcliffe Road, Dover, Kent CT17 9EN. ENGLAND T +44 (0)1304 502101 F +44 (0)1304 207342 www.megger.com Megger Limited reserves the right to alter the specification of its products from time to time without notice. Although every effort is made to ensure the accuracy of the information contained within this document it is not warranted or represented by Megger Limited to be a complete and up-to-date description.
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Page 3: Declaration Of Conformity
Limited described in this user guide is in compliance with Directive 2014/53/EU. Other equipment manufactured by Megger Instruments Limited described in this user guide is in compliance with Directives 2014/30/EU and 2014/35/EU where they apply. The full text of Megger Instruments EU declarations of conformity are available at the following internet address: megger.com/company/about-us/eu-dofc www.megger.com... -
Page 4: Table Of Contents
3.4.4 MAX/MIN/AVG button 3.4.5 HOLD/Backlight button 3.4.6 PEAK/Torch button Terminals Display 4. Operation Current measurements 4.1.1 DC current measurements 4.1.2 AC current measurements Voltage measurement 4.2.1 V AC or DC voltage measurements 4.2.2 Frequency and % Duty cycle measurements www.megger.com AVO®840... - Page 5 6.1.1 Test the fuses 7. Specifications Electrical specifications 7.1.1 AC voltage 7.1.2 DC voltage 7.1.3 (AC+DC) 7.1.4 AC/DC voltage (Low-Z) 7.1.5 AC current 7.1.6 DC current 7.1.7 Frequency 7.1.8 Duty cycle 7.1.9 Resistance 7.1.10 Capacitance 7.1.11 Temperature Safety www.megger.com AVO®840...
- Page 6 8. Calibration, Repair and Warranty Limited warranty Repair and warranty Instrument repair and spare parts Returning an instrument for repair Calibration, service and spare parts Approved repair companies 9. Decommissioning WEEE Directive Battery disposal 10. Worldwide Sales Offices www.megger.com AVO®840...
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Page 7: Introduction
Read the ensuing safety regulations attentively before using this device. Company web site Occasionally an information bulletin may be issued via the Megger web site. This may concern new accessories, new usage instructions or a software update. Please occasionally check on the Megger web site for anything applicable to your Megger instruments. -
Page 8: Safety Warnings And Standards
(buzzer), resistance, capacitance or diode tests. Remove test connections before turning the rotary selector switch. „ To avoid false readings that could lead to electric shock and injury, replace the battery as soon as the „ low battery indicator appears. www.megger.com AVO®840... -
Page 9: Installation Category Definitions
Warning: High Voltage, risk of electric shock Caution: Refer to user guide UK conformity. This equipment complies with current UK legislation EU conformity. Equipment complies with current EU directives Conforms to relevant Australian Safety and EMC standards AC measurement www.megger.com AVO®840... - Page 10 Do not mix with the solid waste stream. Spent batteries should be disposed of by a qualified recycler or hazardous materials handler per local regulations. Contact your authorized Megger Service Center for recycling information. Keep batteries away from children.
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Page 11: Input Protection Limits
Current measurement to 10 A „ Built in torch „ Analogue bar graph „ IP44 (dust and water resistance) rating Designed and tested to withstand a 2 m (6 ft 7 in) drop „ Bluetooth interface and Megger app „ www.megger.com AVO®840... -
Page 12: Instrument Overview
4x AAA Alkaline batteries „ *Ratings: Double insulated, CAT III 1000 V, CAT IV 600 V, 10 A max Instrument layout Item Description Item Description 6000 count LCD Tilt stand Softkeys Fuse and battery cover Function switch Torch Terminals www.megger.com AVO®840... -
Page 13: Rotary Switch
The softkeys on the front of the instrument activate features within each function selected from the rotary switch, navigate menus or control power to instrument circuits. Item Softkey Item Softkey RANGE PEAK REL AC + DC MODE MAX MIN AVG HOLD www.megger.com AVO®840... -
Page 14: Range
1. Press and hold the Bluetooth button until the Bluetooth symbol appears on the LCD. 2. Bluetooth should be disabled when not connected to a mobile device to conserve battery power. 3. To turn off Bluetooth, press and hold the Bluetooth button until the Bluetooth symbol no longer appears on the display. www.megger.com AVO®840... -
Page 15: Rel/Ac+Dc Button
Press the MAX/MIN/AVG button 3 times to view the average reading, “AVG” will appear on the LCD and the meter will display the running average, The meter will update the reading when the average value changes. ƒ Press and hold the MAX/MIN/AVG Button to end MAX/MIN/Average and return to normal operation. www.megger.com AVO®840... -
Page 16: Hold/Backlight Button
Th flash light function turns on the light on the top of the multimeter. 1. Press and hold the PEAK/Torch button until the Torch turns on. 2. Press and hold the PEAK/Torch Button until the Torch turns off. www.megger.com AVO®840... -
Page 17: Terminals
Input for 0 A to 10.00 A current. Input for voltage, continuity, resistance, diode test, capacitance, frequency and temperature µA mA Input terminal. Common input terminal. Input for 0 A to 800 mA current. Return terminal for all measurements. www.megger.com AVO®840... -
Page 18: Display
Low input impedance Maximum Units of measure list Peak Hertz (frequency) Relative Diode test Hold Continuity Auto range Percent (duty ratio) Low battery Temperature units Alternating current Bluetooth Minus sign Measurement reading Direct current Analogue bar graph AC+DC voltage Average www.megger.com AVO®840... -
Page 19: Operation
CAUTION : Do not make current measurements greater than 10 A. 1. Set the function switch. For current measurements up to: 1.1. 6000 μA DC, set function switch to μA. 1.2. 600 mA DC set function switch to mA. 1.3. 10 A Set function switch to A. www.megger.com AVO®840... - Page 20 A terminal. 5. Press the MODE button to cycle through setting until the display shows the DC current icon (d). 6. Turn off the power. 7. Break the circuit. 8. Insert the meter probes in series with the circuit. www.megger.com AVO®840...
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Page 21: Ac Current Measurements
4. For current measurements. 4.1. up to 10 A AC. lnsert the red test lead 4 mm plug into the A terminal. 5. Press the MODE button to cycle through setting until the display shows the AC current icon (a). www.megger.com AVO®840... -
Page 22: Voltage Measurement
(Consult chapter 6.1.1 Test the fuses on page „ „ Use the proper terminals, switch position, and range for your measurement. „ Never place the probes in parallel with a circuit or component when the leads are plugged into the A (Amps) terminal. www.megger.com AVO®840... - Page 23 5. Touch the black test probe tip to the negative side of the circuit. 6. Touch the red test probe tip to the positive side of the circuit. 7. The results will be displayed. - 10 AUTO www.megger.com AVO®840...
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Page 24: Frequency And % Duty Cycle Measurements
LCD. 5. Touch the black test probe tip to the negative side of the circuit. 6. Touch the red test probe tip to the positive side of the circuit. 7. The results will be displayed. AUTO www.megger.com AVO®840... -
Page 25: Resistance, Continuity And Diode Testing
Ω terminal. 4. Touch the black test probe tip to the negative side of the circuit. 5. Touch the red test probe tip to the positive side of the circuit. 6. The results will be displayed. - 10 AUTO www.megger.com AVO®840... -
Page 26: Continuity Check
6. Touch the red test probe tip to the positive side of the circuit. 7. The results will be displayed. NOTE : If the resistance is less than approximately 250, the audible signal will sound. If the circuit is open, the display will indicate “OL”. - 10 www.megger.com AVO®840... -
Page 27: Diode Test
NOTE : The voltage will typically indicate 0.400 to 3.200 V. NOTE : A reverse voltage will indicate “OL”. NOTE : Shorted devices will indicate near “OV” NOTE : An open device will indicate “OL” in both polarities. www.megger.com AVO®840... -
Page 28: Capacitance Measurements
Capacitance ( ) terminal. 4. Touch the black test probe tip to the negative side of the circuit. 5. Touch the red test probe tip to the positive side of the circuit. 6. The results will be displayed. AUTO www.megger.com AVO®840... -
Page 29: Temperature Measurements
– to -. 4. Press the MODE button to change the temperature units (°C or °F), displayed in top right hand side. 5. Place probe tip at heat source to be measured. 6. The results will be displayed. °C AUTO www.megger.com AVO®840... -
Page 30: Low-Z Voltage Measurements
Insert the red test lead 4 mm plug into the positive Low-Z terminal. 5. Touch the black test probe tip to the negative side of the circuit. 6. Touch the red test probe tip to the positive side of the circuit. 7. The results will be displayed. AUTO www.megger.com AVO®840... -
Page 31: Maintenance
Have an approved technician repair the instrument. „ Use only specified replacement fuses. „ „ Replace a blown fuse with exact replacement only for continued protection against arc flash. „ Keep the meter dry. If it gets wet, dry it with a clean cloth. www.megger.com AVO®840... - Page 32 Use only fresh batteries of the recommended size and type, remove old or weak batteries so they do „ not leak and damage the unit. „ If the meter is to be stored for a long period of time, the batteries should be removed to prevent damage to the unit. www.megger.com AVO®840...
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Page 33: Battery And Fuse Replacement
1. Turn the multimeter off and remove the test leads from the terminals. 2. Extend the tilt stand to expose the battery door. 3. Open the rear battery cover by removing the four screws using a Phillips head screwdriver. www.megger.com AVO®840... -
Page 34: Test The Fuses
<2 Ω Low Z Low Z CAT IV 600 V CAT IV 600 V CAT III 1000 V CAT III 1000 V MAX 10 A MAX 10 A µA µA ✖ MAX 800 mA MAX 800 mA ✖ www.megger.com AVO®840... -
Page 35: Specifications
Average responding multimeters are calibrated to read correctly only on sine waves, and they will read inaccurately on non-sine wave or distorted signals. True rms meters read accurately on either type of signal ACV bandwidth 50 Hz to 1000 Hz www.megger.com AVO®840... -
Page 36: Electrical Specifications
±(0.5% + 8 digits) 6.000 V 1 mV ±(0.5% + 5 digits) 60.00 V 10 mV 600.0 V 0.1 V 1000 V ±(0.8% + 3 digits) Input protection : 1000 VAC RMS or 1000 V DC; Input impedance: 10 MΩ. www.megger.com AVO®840... -
Page 37: Ac+Dc)
10 A / 1000 V fuse. AC current bandwidth: 45 to 500 Hz All AC current ranges are specified from 5% of range to 100% of range Amps input burden voltage (typical): mA input ~3.8 mV/A, A input ~30 mV/A. www.megger.com AVO®840... -
Page 38: Dc Current
Range Resolution Accuracy 600.0 Ω 0.1 Ω 6.000 kΩ 1 Ω ± (1.0% + 5 digits) 60.00 kΩ 10 Ω 600.0 kΩ 100 Ω 6.000 MΩ 1 kΩ ± (2 0% + 10 digits) 60.00 MΩ 10 kΩ www.megger.com AVO®840... -
Page 39: Capacitance
(10 MHz to 300 GHz); and EN 50663: 2017 Generic standard for assessment of low power electronic and electrical equipment related to human exposure restrictions for electromagnetic fields (10 MHz - 300 GHz). www.megger.com AVO®840... -
Page 40: Calibration, Repair And Warranty
Calibration, Repair and Warranty Limited warranty This Megger product will be free from defects in material and workmanship for three years 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. -
Page 41: Calibration, Service And Spare Parts
For service requirements for Megger Instruments contact Megger or your local distributor or authorised repair centre. Megger operates fully traceable calibration and repair facilities, to make sure your instrument continues to provide the high standard of performance and workmanship you expect. These facilities are complemented by a worldwide network of approved repair and calibration companies to offer excellent in-service care for your Megger products. -
Page 42: Decommissioning
9. Decommissioning WEEE Directive The crossed out wheeled bin symbol placed on Megger products is a reminder not to dispose of the product at the end of its life with general waste. Megger is registered in the UK as a Producer of Electrical and Electronic Equipment. The Registration No is WEE/ HE0146QT. -
Page 43: Worldwide Sales Offices
Worldwide Sales Offices 10. Worldwide Sales Offices Sales Office Telephone Email +44 (0)1 304 502101 UKsales@megger.com USA – Dallas +1 214 333 3201 USsales@megger.com USA – Valley Forge +1 214 333 3201 USsales@megger.com USA – Dallas +1 214 333 3201 USsales@megger.com... - Page 44 +44 (0)1 304 502101 +46 08 510 195 00 uksales@megger.com seinfo@megger.com Megger Valley Forge Megger USA - Dallas Megger USA - Fort Collins Phoenixville, PA USA Dallas, TX USA Fort Collins, CO USA +1 610 676 8500 +1 214 333 3201 +1 970 282 1200 USsales@megger.com...
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