Amprobe AM-560, AM-570, AM-540-EUR, AM-550-EUR Users Manual

AM-560

Advanced HVAC
Multimeter

AM-570

Industrial
Multimeter

AM-540-EUR
AM-550-EUR

Digital Multimeter

Users Manual

• Mode d’emploi

• Bedienungshandbuch

• Manuale d’uso

• Manual de uso

• Gebruikershandleiding

• Podręcznik użytkownika

• Användarhandbok

• Brukerhåndbok

• Käyttöohje

• Manual do utilizador

• Brugervejledning

AM-560

Advanced HVAC Multimeter

AM-570

Industrial Multimeter

AM-540-EUR
AM-550-EUR

Digital Multimeter

Users Manual

4/2012, 4252998 A
©2012 Amprobe Test Tools.
All rights reserved. Printed in China.

English

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and workmanship for one year
from the date of purchase, unless local laws require otherwise. 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. To obtain service during the warranty period, return the
product with proof of purchase to an authorized Amprobe Service Center or to an Amprobe
dealer or distributor. See Repair Section for details. THIS WARRANTY IS YOUR ONLY REMEDY.
ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR STAUTORY - INCLUDING IMPLIED
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE HEREBY
DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since
some states or countries do not allow the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of liability may not apply to you.

Repair

All test tools returned for warranty or non-warranty repair or for calibration should be
accompanied by the following: your name, company’s name, address, telephone number, and
proof of purchase. Additionally, please include a brief description of the problem or the service
requested and include the test leads with the meter. 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®.

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 Amprobe® distributor for an
exchange for the same or like product. Please check the “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® Service Center (see address below).

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be sent to an Amprobe® Service
Center. Call Amprobe® or inquire at your point of purchase for current repair and replacement
rates.

In USA: In Canada:
Amprobe Amprobe
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: [phone]

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe® distributor for a nominal
charge. Please check the “Where to Buy” section on www.amprobe.com for a list of distributors
near you.

European Correspondence Address*
Amprobe® Europe
Beha-Amprobe GmbH
In den Engematten 14
79286 Glottertal, Germany
Tel.: [phone] - 0
www.amprobe.eu
*(Correspondence only – no repair or replacement available from this address. European
customers please contact your distributor.)

AM-560 Advanced HVAC Multimeter
AM-570 Industrial Multimeter
AM-540-EUR / AM-550-EUR Digital Multimeter

1

7

2

3

4 46

5

10

7

89

Flash light

1

LCD Display

2

Push buttons (See making measurement for button functions)

3

AM-570 / AM-550-EUR: Low-impedance button

4

AM-560 / AM-540-EUR: Backlight button

Rotary switch

5

SELECT button

6

Input terminal for voltage, diode, capacitance, resistance,

7

continuity and temperature measurement

COM (return) terminal for all measurements

8

Input terminal for AC/DC mA/uA measurement

9

10

Input terminal for AC/DC A measurement to10A

6

Screen Display

26

2 4

25
24

27

3
7

18

6

28

Auto- or Manual- range

1

Direct current

2

Negative reading

3

Alternate current

4

True-rms value

5

Low battery indicator

6

Data hold

7

Diode test

8

Continuity test

9

10

Relative zero mode

11

Non-contact Voltage

detection mode

12

Measurement units

for Resistance

13

Measurement units

for Frequency

14

Measurement units for Voltage

15

Measurement units for Current

5

10 19 2011 21

2223

16

Measurement units for Capacitance

17

Duty cycle

18

Auto power off

19

Maximum / minimum reading

memory

20

Positive / negative peak

reading memory

21

Measurement unit for temperature

22

Low-pass filter

23

400KΩ low-impedance test

(AM-570 / AM-550-EUR only)

24

Temperature measurement T1 or T2

25

Temperature measurement T1 - T2

26

Warning for error input terminals

connection for test leads

27

Hazardous Voltage presence

28

Analog bar graph display

17
16

12

13
14 15

9

81

AM-560 Advanced HVAC Multimeter
AM-570 Industrial Multimeter
AM-540-EUR / AM-550-EUR Digital Multimeter

CONTENTS

SYMBOL .................................................................................................................2

SAFETY INFORMATION .........................................................................................2

UNPACKING AND INSPECTION .............................................................................3

FEATURES ...............................................................................................................4

MAKING MEASUREMENT .....................................................................................5

Rotary Switch Positions ....................................................................................6

Function Buttons ..............................................................................................6

Measuring AC and DC Voltage ........................................................................9

Low Pass Filter ...................................................................................................9

Measuring Frequency / Duty Cycle ...................................................................11

Measuring AC and DC Current ........................................................................13

Measuring Resistance .......................................................................................14

Measuring Continuity ......................................................................................15

Measuring Capacitance ....................................................................................16

Measuring Diode ...............................................................................................17

Measuring Temperature °C / °F ........................................................................18

Non-Contact Voltage Detection .......................................................................19

SPECIFICATIONS ....................................................................................................20

MAINTENANCE ......................................................................................................24

BATTERY AND FUSE REPLACEMENT .....................................................................25

1

SYMBOLS

Caution! Risk of electric shock.



Caution! Refer to the explanation in this manual



Alternating Current (AC)



Direct Current (DC)



The equipment is protected by double insulation or reinforced



insulation

Earth ground



Audible tone

Battery

Complies with European directives



Conforms to relevant Australian standards



Canadian Standards Association (NRTL/C)



Do not dispose of this product as unsorted municipal waste.



Contact a qualified recycler.

SAFETY INFORMATION

The meters comply with:
IEC/EN 61010-1 3rd Edition Pollution Degree 2, Measurement Category IV 600V

and Measurement Category III 1000V
IEC/EN 61010-2-31 for test leads
EMC IEC/EN 61326-1
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. Examples are measurements on distribution boards,
circuit- breakers, wiring, including cables, bus-bars, junction boxes, switches,

2

socket-outlets in the fixed installation, and equipment for industrial use
and some other equipment, for example, stationary motors with permanent
connection to the fixed installation.



WARNING: Read before using

• To avoid possible electrical shock or personal injury, follow these
instructions and use the Meter only as specied in this manual.

• Do not use the Meter or test leads if they appear damaged, or if
the Meter is not operating properly. If in doubt, have the Meter
serviced.

• Always use the proper function and range for measurements.

• Before rotating the function range selection switch, disconnect
test probe from circuit under test.

• Verify the Meter’s operation by measuring on a known voltage

source.

• Do not apply more than the rated voltage, as marked on the Meter,

between the test probe or between any test probe and earth ground.

• Use the Meter with caution for voltages above 30 V ac rms, 42 V

ac peak, or 60 Vdc. These voltages pose electrical shock hazards.

• Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance.

• Do not use the Meter around explosive gas or vapor.

• When using the test leads, keep your ngers behind the nger guards.

UNPACKING AND INSPECTION

Your shipping carton should include:
1 AM-560 or AM-570 or AM-540-EUR or AM-550-EUR Multimeter
1 Pair of test leads
2 Temperature probes
1 Temperature adaptor
1 Velcro strap
1 9V (6F22) battery (installed)
1 Users manual
1 Carrying case
If any of the items are damaged or missing, return the complete package to

the place of purchase for an exchange.

3

FEATURES

The multimeter designed for professional HVAC technicians. The AM-560 /
AM-540-EUR measures a complete range of electrical parameters and features.
Key functions include: temperature, capacitance to check the motor startup
capacitors, micro amps for flame sensor troubleshooting, and a low pass filter
to take accurate measurements on variable frequency drives. With a built-in
flashlight, and non-contact voltage detection, the AM-560 / AM-540-EUR is
the choice multimeter for the professional HVAC technician. This meter is
safety rated to CAT IV 600V and CAT III 1000V for the most advanced HVAC
troubleshooting needs.

The Amprobe AM-570 / AM-550-EUR is a fully featured multimeter designed
for professional electricians who need to maintain service or troubleshoot
advanced electrical systems. True-rms sensing accurately measures voltage on
systems affected by harmonics; built-in flashlight allows you to identify wires
while working in dark conditions, and non-contact voltage detection allows
for quick go-no-go checks without the need for an additional tool. The AM­570 / AM-550-EUR also features dual input temperature measurement, a low­impedance function to detect stray voltage, and a low pass filter to accurately
take measurements on variable frequency drives. Safety rated to CAT IV 600V
and CAT III 1000V for use in the most industrial applications.

• Measurements: AC/DC Voltage up to 1000V, ac/dc current, Resistance,
Frequency, Capacitance, Temperature, duty cycle.

• Special Functions:

- Low Z - to detect “ghost” voltages (for AM-570 only)

- Low pass filter for variable frequency drives

- Non-contact Voltage detection

- Audible continuity

- Diode test

• Dual reading backlit LCD display with analog bargraph

• Events:

- Data hold

- MAX / MIN memory

- Peak hold (crest)

- Relative zero mode

• Built-in flash light

• Built-in test leads storage and “third hand holder”

• Warning against improper test leads connection

4

• Auto and manual ranging

• Auto power off

• Low battery warning

• Velcro strap to hang a meter

• Safety: CAT IV 600V, CAT III 1000V

MAKING MEASUREMENT



1. Use the proper function and range for measurements.

2. To avoid possible electrical shock, personal injury or damages to the
Meter, disconnect circuit power and discharge all high-voltage capacitors
before testing resistance and diode.

3. Connecting test leads:

• Connect the common (COM) test lead to the circuit before connecting
the live lead;

• After measurement, remove live lead before removing the common
(COM) test lead from the circuit

4. Symbol “OL” is displayed on LCD when the measurement is out of range.

Rotary Switch Positions

Switch Position Measurement Function

/

/ NCV

/ / %

/ /



°C °F

mA

μA

10A

AC voltage measurement / Low-pass filter (1kHz).
Use SELECT button to select alternate function.

DC voltage measurement / Non-contact Voltage
detection.Use SELECT button to select alternate function.

DC millivolt measurement / Frequency / Duty cycle
Use SELECT button to select alternate function.

Resistance / Capacitance / Continuity measurement.
Use SELECT button to select alternate function.

Voltage measurement of diode PN junction (diode test).
Temperature measurement.

Use SELECT button to select temperature unit °C or °F.
AC or DC current measurement.

Use SELECT button to select alternate function ac or dc

5

AM-560 / AM-540-EUR Function Buttons

Button Measurement Function

SELECT

RANGE /

AUTO T1-T2

REL /

MAX/MIN /
PEAK(1ms)

HOLD Display freezes present reading.

Press the yellow SELECT button to select alternate
measurement functions on the rotary switch.

Manual or Auto range switching for voltage current,
resistance and capacitance. The default setting is auto­ranging, press to switch to manual ranging. Press for 2
seconds to return to auto-ranging.

T1 or T2 or T1-T2 function switching for temperature
measurement.

Relative mode / Press >2 seconds to turn ON or turn
OFF flash light.

Press to enter maximum / minimum reading memory
mode. Press again for maximum reading; press again for
minimum reading. Press > 2 seconds to exit maximum/
minimum reading mode.

Press > 2 seconds to enter Peak MAX/ Peak MIN mode.
Press again for Peak MAX reading; press again for Peak
MIN reading. Press > 2 sec to exit Peak MAX/ Peak MIN
reading mode.

Press > 2 seconds to turn ON or turn OFF LCD backlight.

6

AM-570 / AM-550-EUR Function Buttons

Button Measurement Function

SELECT

RANGE /

AUTO T1-T2

REL /

MAX/MIN /
PEAK(1ms)

HOLD /

Low imp. 400kΩ

Press the yellow SELECT button to select alternate
measurement functions on the rotary switch.

Manual or auto range switching for voltage current,
resistance and capacitance. The default setting is Auto
ranging, press to switch to manual ranging. Press for 2
seconds to return to auto-ranging.

T1 or T2 or T1-T2 function switching for temperature
measurement.

Relative mode / Press >2 seconds to turn ON or turn
OFF flash light.

Press to enter Maximum / minimum reading memory
mode. Press again for naximum reading; press again for
minimum reading. Press > 2 seconds to exit maximum/
minimum reading mode.

Press > 2 seconds to enter Peak MAX/ Peak MIN mode.
Press again for Peak MAX reading; press again for Peak
MIN reading. Press > 2 seconds to exit Peak MAX/ Peak
MIN reading mode.

Display freezes present reading / press > 2 seconds to turn
ON or turn OFF LCD backlight.

For voltage measurement functions only. Press and hold
the button to change the input impedance of V and COM
terminal to 400kΩ. Release 400kΩ button to return to
normal input impedance of V and COM terminal (around
10MΩ).

7

Dual Display

AC Voltage measurement

Primary display shows ac voltage.
Secondary display shows frequency.

AC Current measurement

Primary display shows ac current.
Secondary display shows frequency.

Auto Power OFF

Auto power off: Approximately 15 minutes.
When the Meter is in auto power off mode, press any button to resume
normal operation.

REL Measurement (V, A, Ω and  Measurement)

The Meter will calculate the values based on the stored value when set to related
mode Display value under REL

Note: Entering relative mode is not allowed when the Meter displays “OL”.

Mode = Measured Value - Reference Value

Incorrect Input Terminal Connection Warning

To alert you about the incorrect connection of input terminals, the Meter will
display “Warning” and buzzer will sound when test leads are falsely inserted
to terminals which are not for measurement of the selected functions.

Function selected WARNING – Incorrect Terminal Connection

V, Ω,  , , Hz, %,

mA μA

°C °F

10A

10A, mA μA
10A
mA μA

Hazardous Voltage Warning

LCD screen displays

when the Meter detects a voltage ≥30 Vac

or ≥42 V dc.

8

Measuring AC and DC Voltage

To avoid personal injury or damage to the Meter, do not apply

voltage higher than 1000V ac and 1000V dc.Buzzer will sound when detect a
voltage higher than 1000V ac and 1000V dc.

Low imp. 400Ω

(For only)

Low Pass Filter



• To avoid personal injury or damage to the Meter, do not use low pass
filter function to verify the presence of hazardous voltage in the circuit.
Always use Voltage function to verify hazardous voltages.

• Do not apply voltage higher than 1000V.

Measuring AC voltage with Low Pass Filter:

Turn rotary switch to  position and press SELECT button for Low Pass Filter
mode,

Making measurement under ac voltage mode by a low pass filter can block
voltage above 1KHz. Low pass filter can be used to measure composite sine
wave signal generated by inverter and variable frequency motor drives.

symbol is displayed on screen.

9

Note: The Meter goes into manual mode when Low Pass Filter mode is
enabled. Auto-range mode is not available for Low Pass Filter option.

Measuring Frequency / Duty Cycle

To avoid personal injury or damage to the Meter, do not apply

voltage higher than 1000V.

1. Frequency / Duty Cycle function
Step 1: Turn the rotary switch to Hz % position. Use SELECT button for Hz

or duty cycle measurement.
Step 2: Connect test leads to the circuit. Connecting diagram see below.

10

(for Frequency only)

2. Measuring Frequency by using ac Voltage function

Step 1: Turn the rotary switch to  position.
Step 2: Connect test leads to the circuit. Connect the common (COM) test

lead to the circuit before connecting the live lead (connecting diagram
refer to “Measuring AC Voltage”).

Primary display shows ac Voltage measurement reading.
Secondary display shows Frequency measurement reading.

11

3. Measuring Frequency by using ac current function

Step 1: Turn the rotary switch to μA or mA or 10A position.
Step 2: Connect the test leads to the correct input 10A/mA μA current

terminal and to the circuit before powering the circuit under test
(connecting diagram refer to “Measuring AC Current”).

Primary display shows ac current measurement reading.
Secondary display shows Frequency measurement reading.

Measuring AC and DC Current

Press SELECT button to select ac or dc current measurement function.

To avoid personal injury or damage to the Meter:

1. Do not attempt to make an in-circuit current measurement when the
open-circuit potential to earth ground exceeding 1000V

2. Switch to proper function and range for your measurement.

3. Do not place the test probe in parallel with a circuit when the test leads
are connected to the current terminals.

4. Connect the test leads to the correct input 10A/mA μA current terminal
and to the circuit before powering the circuit under test.

5. For current range from 8-10A, do not measure current for more than 20
minutes. Wait for 10 minutes before taking another measurement

6. After measurement, switch OFF the circuit’s power before removing test
leads from the circuit.

12

Measuring Resistance

Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance.

Note: On a higher resistance measurement (>1M), the measurement may
take a few seconds to get stable reading.
Over range or open circuit indication: OL

13

Measuring Continuity

Disconnect circuit power and discharge all high-voltage capacitors

before testing continuity.

Press SELECT button for continuity function.

Measuring Capacitance

Disconnect circuit power and discharge all high-voltage capacitors

before measuring capacitance. Use dc Voltage function to check the
capacitors are discharged.

Press SELECT button for capacitance measurement function.

14

Measuring Diode

Disconnect circuit power and discharge all high-voltage capacitors

before testing diode.

Note: A typical junction Voltage drops 0.5 V to 0.8 V.

15

Measuring Temperature °C / °F



1. To avoid personal injury or damage to the Meter, do not apply the
temperature probe to any live conductive parts.

2. Temperature sensor K-type (nickel-chromium/nichrosi) thermocouple is
suitable for temperature measurement below 230°C (446°F).

Measurement steps:

Step 1: Turn the rotary switch to °C/°F position. The display will show

“OPEN”. Press SELECT button for conversion to °F measurement.
Step 2: Connect the temperature probe (K-type) to the Meter and to the

surface to be measured. Two temperature surface points can be measured
at the same time by using the provided temperature probes.

Step 3: Press RANGE button to select temperature measurement T2 or T1-T2
(the default temperature measurement is T1).

T2

T1

16

Non-Contact Voltage Detection (NCV Mode)



1. To avoid personal injury or damage to the Meter, do not test on un­insulated high voltage wires.

2. Buzzer will sound and screen will display “OL” when detecting ac
Voltage above 90V ac.

3. Do not test on hazardous live wires higher than 750V ac.

4. Before and after hazardous voltage measurements, test the Meter by
approaching to a known source such as a line ac Voltage or outlet to
determine proper operation.

5. At NCV mode, no test lead connections are required for NCV measurement.

Buzzer will sound when the detected voltage is ≥90V, and the buzzer will be
on. The distances between the wire and the meter should be ≤8mm.

17

DETAILED SPECIFICATIONS

Ambient temperature: 23°C ±5°C (73.4°F ±9°F); Relative temperature: ≤75%
Accuracy: ±(% of reading + digits)
Maximum voltage between input terminal and earth ground:

1000V ac True-rms or 1000V dc.

Fuse for mA µA input: F1 0.5A H 1000V fast-fuse, (Φ6.3×32)mm
Fuse for 10A input: F2 11A H 1000V fast-fuse, (Φ10×38)mm

Maximum display: Digital 5999 counts, updates 3/seconds.
Analog pointer display: 61 segments. Updates 20 times/seconds.
Over-range indication: OL
Range: Automatic and Manual
Altitude: Operating ≤ 2000m
Operating temperature: 0°C~+40°C (32°F~104°F)
Relative humidity: 0°C~+30°C (32°F~86°F) ≤75%; +30°C~+40°C (86°F~104°F) ≤50%
Storage temperature: -10°C~+50°C (14°F~122°F)
Electromagnetic compatibility: In an RF filed of 1V/m = Specified accuracy ± 5%
Battery: 9V, 6F22, NEDA1604 or equivalent
Low battery indication:
Dimensions (L x W x H): 182 mm x 90 mm x 45 mm (7.2 in x 3.5 in x 1.8 in)
Weight: Approximately 354g (0.78 lb) with batteries installed

1. DC Voltage Measurement

Range Resolution Best Accuracy

600.0mV 0.1mV ±(0.5%+3 LSD)

6.000V 1mV

±(0.5%+2 LSD)60.00V 10mV

600.0V 100mV

1000V 1V ±(1.0%+2 LSD)

Input impedance: Around 10MΩ ;
Overload protection: ±1000V

18

2. AC Voltage Measurement

Accuracy

Range Resolution

6.000V 1mV

600.0V 100mV
1000V 1V ±(1.2%+3LSD) ±(2.5%+3 LSD)

Overload protection: 1000V rms
Input impedance: Around 10MΩ
Frequency response: 45Hz– 400Hz (AM-560 / AM-540-EUR), 45Hz – 1kHz (AM-

570 / AM-550-EUR)

AM-560 / AM-540-EUR: Average detecting, True-rms indication. rms indication.
AM-570 / AM-550-EUR: True-rms.
Note: Frequency (on secondary display) may not be displayed if the measured

voltage is below 20% of the display voltage range.

45Hz – 400Hz

(AM-560 / AM-570

AM-540-EUR / AM-550-EUR)

±(1.0%+3LSD) ±(2%+3 LSD) 60.00V 10mV

400Hz – 1kHz

(AM-570/

AM-550-EUR)

3. Low Pass Filter

Range Resolution Accuracy

6.000V 0.001V

60.00V 0.01V

600.0V 0.1V
1000V 1V

Block ac voltage signals above 1KHz
Overload protection: 1000Vp

45 to 200Hz ± (2%+40 LSD)

200 to 440Hz ± (6%+40 LSD)

4. Frequency Measurement

Range Resolution Accuracy

60.00Hz 0.01 Hz

600.0Hz 0.1 Hz

6.000kHz 1 Hz

60.00kHz 10 Hz

600.0 kHz 100Hz

6.000MHz 1KHz

60.00MHz 10KHz

Overload protection: 1000Vp

19

±(0.1%+3 LSD)

±(0.1%+3 LSD)

5. Duty Cycle

Range Resolution Accuracy

10%~90% 0.01% ±(1.2%+30 LSD)

Overload protection: 1000Vp

6. DC Current Measurement

Range Resolution Accuracy

600.0μA 0.1μA

μA

mA

6000μA 1μA

60.00mA 10μA

500.0mA 0.1mA

±(1.0%+2LSD)

±(1.2%+3 LSD)

10 A 10.00A 10mA ±(1.5%+3 LSD)

Overload protection:
mA /µA range:F1 fuse, 0.5A H 1000V fast-fuse, (

6.3×32)mm

10 A range:F2 fuse, 11A H 1000V fast-fuse, ( 10×38)mm

7. AC Current Measurement

Accuracy

Range Resolution

600.0μA 0.1μA

μA

mA

6000μA 1μA

60.00mA 10μA

600.0mA 0.1mA

45Hz – 400Hz

(AM-560/ AM-570)
(AM-540-EUR/ AM-

550-EUR)

±(1.2%+5 LSD) ±(2%+5 LSD)

±(1.5%+5 LSD) ±(3%+5 LSD)

10 A 10.00A 10mA ±(2%+5 LSD) ±(4%+5 LSD)

Overload protection:
µA mA range: F1 0.5A H 1000V fast-fuse, (

6.3×32)mm

10 A range: F2 11A H 1000V fast-fuse, ( 10×38)mm
Frequency response: 45Hz – 400Hz(AM-560 / AM-540-EUR), 45Hz – 1KHz (AM-

570 / AM-550-EUR)
Note: Frequency (on secondary display) may not be displayed if the measured
current is below 20% of the display current range.

400Hz – 1KHz

(AM-570 /

AM-550-EUR)

20

8. Resistance Measurement

Range Resolution Accuracy

600.0Ω 0.1Ω ±(1.2%+2 LSD)

6.000kΩ 1Ω

±(1.0%+2 LSD)60.00kΩ 10Ω

600.0kΩ 100Ω

6.000MΩ 1kΩ ±(1.2%+2 LSD)

60.00MΩ 10kΩ ±(1.5%+2 LSD)

Open circuit voltage: Around 0.5V
Overload protection: 1000Vp

9. : Continuity : Diode Measurement

Range Resolution Accuracy

Open circuit voltage is around -3V dc.

0.1Ω



Overload protection: 1000Vp

1mV

Resistance >50Ω, buzzer will not sound.
Resistance ≤10Ω, buzzer will sound.

Display range is 0V to 2.8V. Normal voltage is around

0.5V to 0.8V for silicon PN junction.

10. Capacitance Measurement

Range Resolution Accuracy

60.00nF 10pF Under REL status: ±(3%+5 LSD)

600.0nF 100pF

±(3%+5 LSD)6.000μF 1nF

60.00μF 10nF

600.0μF 100nF ±(4%+5 LSD)

6000μF 1μF ±(5%+5 LSD)

60mF 10μF Not specified

Overload protection: 1000Vp

21

11. Temperature Measurement

Range Resolution Accuracy

-40 – 40°C

>40 – 400°C ±(1%+8 LSD)

>400 – 1000°C ±2.5%

-40 – 104°F

>104 – 752°F ±(1%+12 LSD)

>752 – 1832°F ±2.5%

Overload protection: 1000Vp
K-type (nickel-chromium/nichrosi) thermocouple must be used for temperature
measurements.

1°C

2°F

±(2%+8 LSD)

±(2%+12 LSD)

MAINTENANCE AND REPAIR

If the Meter fails to operate, check battery, test leads, etc., and replace as
necessary.
Double check the following:

1. Replace the fuse or battery if the meter does not work.

2. Review the operating instructions for possible mistakes in operating
procedure.

Quick check on 0.5A FUSE:

Step 1: Turn the rotary switch to mA
Step 2: Use a multimeter with continuity function to verify the fuse

continuity for the fuse of mA/μA terminal. Connect the test leads to mA/μA
terminal and COM terminal.

position.

Continuity buzzer activates: the fuse is OK
Continuity buzzer is not activated: the fuse is burnt. Replace the fuse as specified.
F1 0.5A H 1000V fast-fuse, ( 6.3×32)mm

Quick check on 10A FUSE:

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Step 1: Turn the rotary switch to A
Step 2: Use a multimeter with continuity function to verify the fuse

continuity for the fuse of 10A terminal. Connect the test leads to 10A
terminal and COM terminal.

Continuity buzzer activates: the fuse is OK
Continuity buzzer is not activated: the fuse is burnt. Replace the fuse as specified.
F2 11A H 1000V fast-fuse, (

Except for the replacement of the battery, repair of the meter should be
performed only by an Authorized Service Center or by other qualified
instrument service personnel.

The front panel and case can be cleaned with a mild solution of detergent and water.
Apply sparingly with a soft cloth and allow to dry completely before using. Do
not use aromatic hydrocarbons, gasoline or chlorinated solvents for cleaning.

10×38)mm

position.

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BATTERY AND FUSE REPLACEMENT



WARNING

To avoid shock, injury, or damage to the Meter:
Disconnect test leads before opening case.
Use ONLY fuses with the amperage, interrupt, voltage, and speed
ratings specified.

Replacing BATTERY follow below steps:

1. Disconnect the test lead probe from measuring circuit.

2. Turn the Meter to OFF position.

3. Remove the screws from the battery cover and open the battery cover

4. Remove the batteries and replace with one 9V (6F22) or equivalent. The
battery cover provides the correct polarity fitting construction design.
Install the battery in the battery cover.

5. Put the battery cover back and re-fasten the screw.

Battery: 9V (6F22) Battery or equivalent

Replacing FUSE follow below steps:

1. Disconnect the test lead probe from measuring circuit.

2. Turn the Meter to OFF position.

3. Remove the screws from the enclosure and open the enclosure.

4. Remove the broken fuse and replace with new specified fuse.

5. Put the enclosure back and re-fasten the screw.

Fuse ratings:
mA /µA input terminal: F1 fuse, 0.5A H 1000V fast-fuse, (
10 A input terminal: F2 fuse, 11A H 1000V fast-fuse, ( 10×38)mm

6.3×32)mm

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F1

F2

9V battery

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