AXIO AX-203 clamp meter Operating instruction

The AX-203 clamp meter is a versatile and reliable tool for measuring AC and DC current, voltage, resistance, capacitance, frequency, and temperature. It features a large LCD display with a 4000 count resolution, a non-contact AC voltage indicator, and a variety of other features that make it ideal for a wide range of applications. This clamp meter is designed to measure current up to 400A AC/DC without breaking the circuit and can also be used for measuring voltage, resistance, capacitance, frequency, and temperature.

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AC/DC CLAMP METER

Model AX-203

OPERATING INSTRUCTION

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use, hazardous voltages may be present

Double insulation

SAFETY NOTES

•

Do not exceed the maximum allowable input range of any function

•

Do not apply voltage to meter when resistance function is selected.

•

Set the function switch OFF when the meter is not in use.

WARNINGS

•

Set function switch to the appropriate position before measuring.

•

When measuring volts do not switch to current/resistance modes.

•

When changing ranges using the selector switch always disconnect the test leads from the circuit under test.

•

Do not exceed the maximum rated input limits.

CAUTIONS

Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before operating the meter.

Always remove the test leads before replacing the battery.

Inspect the condition of the test leads and the meter itself for any damage before operating the meter. Repair or replace any damage before use.

Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC.

These voltages are considered a shock hazard.

Remove the battery if the meter is to be stored for long periods.

Always discharge capacitors and remove power from the device under test before performing Diode,

Resistance or Continuity tests.

•

Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts. Other means should be used to ensure that the terminals are not "live".

•

If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

Input Limits

Function

V DC, V AC

Maximum Input

400A DC/AC

600V DC/AC

Frequency, Resistance, Diode, Continuity , Capacitance Test 250V DC/AC

Temperature (ºC/ºF) 250V DC/ AC

Meter Description

Current clamp

Non-contact AC voltage indicator light

Clamp trigger

Rotary Function swith

Data Hold/ Back Light button

Relative button

LCD display

MODE select button

Range button

10.

Hz% Hlod button

11.

COM input jack

12.

V ΩCAP TEMPHz jack

13.

Battery Cover

AC DC AC (alternating current) and DC (direct currrent)

Minus sign

8.8.8.8 4000 count (0 to 3999) measurement reading

AUTO AutoRange mode

REL Relative mode

Diode test mode

•))) Audible Continuity

HOLD Data Hold mode

°C,°F,

,m,V,A,K,M,Ω, Units of measure list

10.

Hz % Frequency/duty cycle test mode

Specifications

Function

AC Current

(50/60Hz)

Range & Resolution

40.00 AAC

400.0AAC

40.00 ADC

DC Current

400.0ADC

DC Voltage

400.0 mVDC

4.000 VDC

40.00 VDC

400.0 VDC

600.0 VDC

AC Voltage

(50-400Hz)

Resistance

400.0mVAC

4.000 VAC

40.00 VAC

400.0 VAC

600.0 VAC

400.0 Ω

4.000KΩ

40.00KΩ

6 7 8 5

± (1.5% + 2 digits)

± (2 % + 2 digits)

± (1.5% + 30 digits)

± (1.5% + 5 digits)

± (2.0% + 5 digits)

± (1.0% + 4 digits)

± (1.5% + 2 digits)

Accuracy (% of reading)

± (2.5 % + 8 digits)

± (2.8 % + 5 digits)

± (2.5 % + 5 digits)

± (2.8 % + 5 digits)

± (0.8% + 2 digits)

400.0KΩ

4.000MΩ ± (2.5% + 3 digits)

Capacitance

40.00MΩ

40.00nF

400.0nF

± (3.5% + 5 digits)

(4.0% reading + 20 digits)

4.000µF ±

(3% reading + 5 digits)

Frequency

Temp

(type-K)

(probe accuracy not included)

40.00µF

100.0µF

10-10kHz

Sensitivity:100V(<50Hz);50V(50 to

400Hz;15V(401Hz to 10kHz)

-20.0 to 760.0

-4.0 to1400.0

(4.0% reading + 10 digits)

(1.5% reading + 2 digits)

(3%rdg+5

(3%rdg+9

Clamp size Opening 1.2" (30mm) approx

Diode Test Test current of 0.3mA typical; Open circuit voltage 1.5V DC typical.

Continuity Check Threshold <150

Ω

; Test current < 0.5mA

Low Battery Indication “ ” is displayed

Overrange Indication “OL” is displayed

Measurements Rate 2 per second, nominal

Input Impedance 10M

Ω

(VDC and VAC)

Display 4000 counts LCD

AC Current 50-60Hz (AAC)

AC Voltage bandwidth 50-400Hz (VAC)

Operating Temperature 41 to 104 o

F (5 to 40 o

Storage Temperature -4 to 140 o

F (-20 to 60 o

Operating Humidity Max 80% up to 87

F (31

C) decreasing linearly to 50% at 104

F(40

Storage Humidity <80%

Operating Altitude 7000ft. (2000meters) maximum.

Over voltage Category III 600V

Battery One 9V Battery

Auto OFF approx. 30 minutes

Dimensions/Weight 197x70x40mm/183g

Safety For indoor use and in accordance with Overvoltage Category II,

Pollution Degree 2. Category II includes local level, appliance, portable equipment, etc., with transient overvoltages less than Overvoltage Cat. III

Operation

NOTICES: Read and understand all warning and precaution statements listed in the safety section of this operation manual prior to using this meter. Set the function select switch to the

OFF position when the meter is not in use.

AC/DC Current Measurements

WARNING: Ensure that the test leads are disconnected from the meter before making current clamp measurements.

Set the Function switch to the 400ADC, 40ADC, 400AAC or

40AAC range.

If the range of the measured is not known, select the higher range first then move to the lower range if necessary.

Press the trigger to open jaw. Fully enclose one conductor to be measured.

The clamp meter LCD will display the reading.

AC/DC Voltage Measurements

Insert the black test lead into the negative COM terminal and the red test lead into the positive

V terminal.

Set the function switch to the V position.

Select AC or DC with the MODE button.

Connect the test leads in parallel to the circuit under test.

Read the voltage measurement on the LCD display.

Resistance Measurements

1. Insert the black test lead into the negative COM terminal and the red test lead into the positive terminal.

2. Set the function switch to the Ω •))) CAP position.

3. Touch the test probe tips across the circuit or component under test. It is best to disconnect one side of the device under test so the rest of the circuit will not interfere with the resistance reading.

4. For Resistance tests, read the resistance on the LCD display.

Diode and Continuity Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive diode jack.

Turn the rotary switch to the Ω •))) CAP position.

Press the MODE button until “ “ appears in the display.

Touch the test probes to the diode under test. Forward voltage will indicate 0.4V to 0.7V.

Reverse voltage will indicate “OL”. Shorted devices will indicate near 0mV and an open device will indicate “OL” in both polarities.

Red Black Black Red

Probe Probe Probe Probe

Forward test Reverse test

For Continuity tests, if the resistance is < 150Ω, a tone will sound.

Capacitance Measurements

WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements. Remove the batteries and unplug the line cords.

Set the rotary function switch to the position.

Insert the black test lead banana plug into the negative (COM) jack.

Insert the red test lead banana plug into the positive (V) jack.

Touch the test leads to the capacitor to be tested.

Read the capacitance value in the display

Frequency or % duty cycle measurements

Set the rotary function switch to the “VDC/AC,Hz” position.

Insert the black lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.

Select Hz or % duty with the Hz/% button.

Touch the test probe tips to the circuit under test.

Read the frequency on the display.

Temperature Measurements

WARNING: To avoid electric shock, disconnect both test probes from any source of voltage before making a temperature measurement.

Set the function switch to °C/°F

Insert the Temperature Probe into the negative (COM) and the V jacks, making sure to observe the correct polarity.

Touch the Temperature Probe head to the part whose temperature you wish to measure.

Keep the probe touching the part under test until the reading stabilizes (about 30 seconds).

Read the temperature in the display. The digital reading will indicate the proper decimal point and value.

WARNING: To avoid electric shock, be sure the thermocouple has been removed before changing to another measurement function

Non-Contact AC Voltage Measurements

WARNING: Risk of Electrocution. Before use, always test the Voltage Detector on a known live circuit to verify proper operation

Touch the probe tip to the hot conductor or insert into the hot side of the electrical outlet.

If AC voltage is present, the detector light will illuminate.

NOTE: The conductors in electrical cord sets are often twisted. For best results, rub the probe tip along a length of the cord to assure placing the tip in close proximity to the live conductor.

NOTE: The detector is designed with high sensitivity. Static electricity or other sources of energy may randomly trip the sensor. This is normal operation

MODE BUTTON

To select DC/ACV,OHM/ Diode/Continuity/CAP, Data Hold Button

To freeze the LCD meter reading, press the data hold button. The data hold button is located on the left side of the meter (top button). While data hold is active, the HOLD display icon appears on the

LCD. Press the data hold button again to return to normal operation.

REL BUTTON

For DCA and Capacitance Zero & Offset adjustment.

RANGE BUTTON

When the meter is first turned on, it automatically goes into AutoRanging. This automatically selects the best range for the measurements being made and is generally the best mode for most measurements. For measurement situations requiring that a range be manually selected, perform the following:

1. Press the RANGE button. The “Auto Range” display indicator will turn off, The “Manual Range” display indicator will turn on

2. Press the RANGE button to step through the available ranges until you select the range you want.

3. Press and hold the RANGE button for 2 seconds to exit the ManualRanging mode and return to AutoRanging.

Battery Replacement

Remove the one rear Phillips head screw

Open the battery compartment

Replace the Requires One 9V battery

Re-assemble the meter

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Key features

Measures AC/DC current up to 400A
Measures AC/DC voltage
Measures resistance, capacitance, frequency, and temperature
Large LCD display with 4000 count resolution
Non-contact AC voltage detector
Data hold and relative measurement functions
Auto-ranging and manual ranging modes
Low battery indication
Over-range indication
Continuity check with audible tone

Frequently asked questions

To measure AC/DC current, open the jaw of the clamp meter and fully enclose the conductor you want to measure. Select the appropriate range for the current you are measuring, then press the trigger to take a reading. The reading will be displayed on the LCD display.

To measure AC/DC voltage, connect the black test lead to the negative (COM) terminal and the red test lead to the positive (V) terminal. Select the appropriate range for the voltage you are measuring, then connect the test leads in parallel to the circuit under test. Read the voltage measurement on the LCD display.

To measure resistance, connect the black test lead to the negative (COM) terminal and the red test lead to the positive (V) terminal. Select the appropriate range for the resistance you are measuring, then touch the test probe tips across the circuit or component under test. The resistance reading will be displayed on the LCD display.

To measure capacitance, connect the black test lead to the negative (COM) terminal and the red test lead to the positive (V) terminal. Select the appropriate range for the capacitance you are measuring, then touch the test probe tips across the capacitor under test. Read the capacitance value on the LCD display.

To measure frequency, connect the black test lead to the negative (COM) terminal and the red test lead to the positive (V) terminal. Select the Hz or % duty cycle mode, then touch the test probe tips across the circuit under test. Read the frequency or % duty cycle on the LCD display.

To measure temperature, connect the temperature probe to the negative (COM) terminal and the positive (V) terminal, making sure to observe the correct polarity. Touch the probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilizes (about 30 seconds). Read the temperature on the LCD display. The digital reading will indicate the proper decimal point and value.

To replace the battery, open the battery compartment by removing the rear screw. Replace the battery with a new 9V battery, then reassemble the meter.