MTX 202 - Multimeter METRIX - Free user manual and instructions

USER MANUAL MTX 202 METRIX

You have purchased a digital multimeter MTX 202 or MTX 203. Thank you for your confidence. To get the best service of this multimeter : - Read carefully this user’s manual - Respect the precautions for use Range Digital-B ASYC Multimeters Model MTX 202 MTX 203 Display Digital, monochrome (52 x 37 mm) Count

1.1 Precautions and safety measures

Failure to comply with safety instructions can create a risk of electrical shock, fire, explosion and destruction of the instrument of the installations. If the device is used other than as specified in this manual, the protection provided by the device may be impaired. The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in use. Before using the instrument, make sure it works properly when measuring a known voltage, and check continuity by short circuiting both test leads. Do not use the instrument in an explosive atmosphere or in the presence of inflammable gas or smoke. Do not use the instrument on networks with a rated voltage or category higher than those mentioned. Respect the maximum rated voltages and currents between terminals and in relation to the earth. Do not use the instrument if it seems damaged, incomplete or incorrectly closed Before each use, check the condition of the cable insulation, the unit and the accessories. All elements on which the insulation is damaged (even partially) must be put out of service for repair or disposed at waste. Use cables and accessories for voltage according to IEC 61010-031 and measurement categories at least equal to those of the instrument. If not, an accessory of a lower category reduces the category of the combined multimeter + accessory to that of the accessory. Respect the environmental conditions of use. Strictly comply with the fuse specifications. Disconnect all cables before opening the fuse access cover. Do not modify the instrument and do not replace components using equivalent parts. Repairs and adjustments must be carried out by qualified, approved personnel. Replace the battery as soon as the symbol appears on the display. Disconnect all cables before opening the battery access cover. Use personal protection equipment when conditions require it. Keep your hands and fingers away from the unused terminals of the device. When handling sensors or test probes, do not place fingers beyond physical finger guard.4000- and 6000-count TRMS digital multimeters English

Danger hazard : the operator undertakes to consult these instructions each time this danger hazard symbol is encountered.

Equipment protected throughout by double insulation.

The rubbish bin with a line through it means that in the European Union, the product must undergo selective disposal for the recycling of electric and electronic material, in compliance with Directive WEEE 2002/96/EC.

DC continuous current

Instructions that must be read and understood

CAT II: Test and measurement circuits directly connected to points of use (power outlets and other similar points) on the low voltage network. E.g. Measurement on circuits in network for household appliances, portable tools and other similar instruments. CAT III: Test and measurement circuits connected to parts of the building’s low voltage network installation. E.g. Measurement on distribution switchboards (including secondary meters), the circuit breakers, cabling including cables, busbars, junction boxes, circuit breakers, power outlets in the fixed installation and industrial instruments and other equipment such as motors permanently connected to the fixed installation CAT IV: Test and measurement circuits connected to the source of the building’s low- voltage network installation. E.g. Measurement on equipment installed upstream of the main fuse or building installation cut-off switch. The multimeters conform CATIII 600V, acc. to IEC 61010-1 - Ed. 2.

The MTX 20x is an instrument for measuring electrical and physical quantities that groups the following functions: - AC or DC voltage measurement, - AC or DC current measurement, - resistance measurement, - continuity measurement with beeper, - diode test, - capacitance measurement, - temperature measurements. A NCV indication detects a voltage 230V (50Hz).English 4000- and 6000-count TRMS digital multimeters

Dangerous voltages may be present at the input terminals and may not be displayed.

Yellow key : MODE AC/DC The AC mode is selected (default) on V and DC is selected (default) on A.

• Switch to AC or DC mode by briefly pressing this key (short beep).

• The current mode is displayed on the LCD.

• To disable the Sleep mode, hold down while turning the meter on.

• Sleep mode is disabled and symbol (permanent) won’t display any longer.

• Holds the display on the current value and froozes it (short press).

• A second short press returns the multimeter to normal mode.

• This key is operative in all ranges (excepted NCV).

T : TK-thermocouple temperature measurement, in °C or in °F

A : current measurement in A, AC or DC

Common (return) terminal for all measurements

Input terminal for voltage, resistance, continuity, diode, capacitance, and temperature measurements (+)

Input terminal for AC and DC current measurement to 10A

Dangerous voltages may be present at the input terminals and may not be displayed. Default Auto-range.

Yellow key : MODE AC/DC The AC mode is selected (default) on V and DC is selected (default) on A.

• Switch to AC or DC mode by briefly pressing the same key (short beep).

• The current mode is displayed on the LCD.

• To disable the sleep mode : hold down while turning the meter on.

• Sleep mode is disabled and symbol (permanent) won’t display any longer.

• Holds the display on the current value and freezes it (short press).

• A second short press returns the multimeter to normal mode.

• This key is operative in all ranges (excepted NCV).

T : TK-thermocouple temperature measurement, in °C or in °F

A : current measurement in A, AC or DC

mA : current measurement in mA, AC or DC

µA : current measurement in µA, AC or DC

Input terminal for AC and DC current measurement to 10A

Common (return) terminal for all measurements

Input terminal for voltage, resistance, continuity, diode, capacitance, and temperature measurements

Input terminal for AC and DC microamps and milliamp measurements to 600mA

The meter can be used in different positions for a convenient and good reading:

3. on a metallic door with our magnet-soft sheath

Display Hold is enabled.

AC, DC voltage or current

Diode test is selected.

Continuity is selected.

Autoshutdown is enabled.

Battery is low and should be changed.

Place the batteries in the device as follows :

1. Use a screwdriver, unscrew all the battery cover screws on the back of the meter.

2. Place the batteries in the casing, respect polarity.

3. Screw back battery cover screws.

It is recommended to follow this procedure when you use the meter for the first time, or after long time without use: Start the meter, make sure that all segments are displayed. Check that on Continuity position, and without any input the meter display OL. Take out both cords and short circuit, the beeper should sound. Turn the rotary switch on V and check a known voltage (for example a battery) and make sure voltage is correct. When all the steps above are correct, you can start to use the meter.

3.2 Backlight and Torch light

When pressing the key for more than 2s, both LCD backlight (blue) and torch light (white) will light up. Press again for more than 2s to shutdown the backlight. On NCV position the backlight will blink red if AC live voltage is detected.

3.3 Measuring AC or DC voltages

The meter measures AC or DC voltage. To minimize risk when measuring an unknown voltage, make sure to measure both AC and DC voltage

1. Turn the rotary switch to (10 M), (500 k).

2. Toggle between AC or DC voltage measurement by pressing the yellow

button (in VlowZ : only AC measurement available).

3. Connect the red test lead to the + terminal and the black test lead to the COM

4. Measure the voltage by touching the probes to the desired test points of the

To avoid to measure ghost voltage, choose , impedance of the DMM is lower in Low Z (500 kΩ).English 4000- and 6000-count TRMS digital multimeters

3.4 Measuring AC or DC current

1. Turn the switch to , or for MTX 203 only , or .

2. Toggle between AC or DC current measurement by pressing the yellow key.

3. Connect the red test lead to either A, or mA/µA terminal and black test lead to

4. Break the circuit path to be measured. Then connect the test leads across the

break and apply power.

5. Read the measured current on the display.

If current is above 10A, the DMM will sound. If current measured is above the rated current the fuse will blow. MTX 202 and MTX 203 MTX 203

3.5 Measuring continuity

To avoid electrical shock and damage to the meter when measuring resistance or continuity in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged.

1. Turn the rotary switch to make sure power is disconnected from the

circuit to be measured.

2. Connect the red test lead to the + terminal and the black test lead to the COM

3. Detect the continuity by touching the probes to the desired point of the circuit,

if the resistance is under 50Ω, the beeper will sound, designating a short circuit. If the resistance is above 600Ω, the meter displays OL, designating an open circuit.

3.6 Measuring resistance

To avoid electrical shock and damage to the meter when measuring resistance or continuity in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged.

With the continuity mode selected, press the yellow button once to activate the resistance measurement. Touch with the test probes the desired point of the circuit and read the measured resistance on the display. If resistance is above 60MOhm the meter will display OL. For MTX 202, above 40MOhm the meter will display OL.4000- and 6000-count TRMS digital multimeters English

To avoid electrical shock and damage the meter when measuring diode in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged.

1. Turn the rotary switch to make sure power is disconnected

from the circuit to be measured.

2. Press the yellow button twice.

3. Connect the red test probe to the anode side and black test lead to the

cathode side of the diode being tested.

4. Read the forward bias voltage value on the display.

5. If the polarity of the test leads is reversed with diode polarity or forward bias

voltage is above 3V, the display reading shows OL. This can be used to distinguish the anode and cathode sides of the diode.

To avoid electrical shock and damage to the meter when measuring capacitance in a circuit, make sure the power to the circuit is turned off and all capacitors are discharged. Only Autorange is available in this mode.

1. Turn the rotary switch to make sure power is disconnected

from the circuit to be measured.

2. Connect the red test lead to the + terminal and the black test lead to the COM

3. Press the yellow button three times.

4. Touch the probes to the capacitor leads.

5. After allowing reading to stabilize, read the capacitance value on the display.

In the capacitance range 100mF the measure can be long and exceed 15s. + -English 4000- and 6000-count TRMS digital multimeters

To avoid electrical shock and damage to the meter when measuring a temperature, make sure that the surface in contact with the K thermocouple has no voltage.

1. Turn the rotary switch to .

2. Toggle the yellow key to choose

3. Plug the K thermocouple into the + and

COM terminal, insuring the thermocouple plug marked with a + symbol is connected to the + terminal.

4. Read the temperature in degree on the

display. While doing the measurement make sure to keep the meter within its working temperature. After inserting the plug into the meter, allow 1 minute for thermal stabilization. If no thermocouple the meter will display its internal temperature if above 0°C. If temperature measured is above 1300°C the LCD will display OL.

3.10 Non Contact Voltage Detection (NCV)

NCV can only detect AC live voltage referenced to the ground, the Meter may not detect voltage in NCV due to installation condition of electrical circuit or equipement. Never touch the circuit under test to avoid possible danger even if the Meter didn't detect voltage in NCV. Network : 230V only, 50 Hz (sensitivity : 10 mV) The meter can detect AC live voltage without contact.

1. Remove all test leads from the Meter

2. Turn the rotary switch to

3. Approach live conductor from LCD

(position of the Meter may affect measurement) If no AC live voltage is detected the Meter will display EF and product will be silent. If AC live voltage is detected product will show 4 different levels: from - to ----, at – buzzer will sound discontinuously, at ---- buzzer will sound continuously, and backlight will blink red. Basic detection voltage is for 220/230V. NCV is only for indication purpose and shouldn't be used for measurement, or to detect the absence of voltage. The NCV mode has an indicative meaning only and must not be used either for measuring nor detect the absence of voltage. An engraved marking on the sheath indicates the position of the antenna for NCV indication.

The Vlow Z position measures AC voltage with lower impedance (500kΩ) than normal voltage measurement, this function is used to avoid measuring ghost voltages.4000- and 6000-count TRMS digital multimeters English

The instrument has no parts that can be replaced by personnel who are not trained and approved. Any non-approved repair or other work, or replacement of a part by an "equivalent", may severely compromise safety

Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect the readings. Dry the meter perfectly after cleaning and before use.

4.2 Testing the 10A Fuse

To avoid electrical shock, remove the test leads and any input signals before replacing the fuses.

1. Turn the rotary switch to

position and toggle the yellow key.

2. Plug a test lead into the + terminal

and touch the probe to the A or mA/µA according to the fuse to be tested A good A terminal fuse is indicated 000.0Ω to 000.2Ω.

have the meter serviced.

4.3 Replacing the batteries and fuses

To avoid false readings, which could lead to possible electric shock, or personal injury, replace the batteries with LR6 batteries as soon as the battery indicator appears. To prevent damage of injury, install ONLY replacement fuses with the specified amperage, voltage, and interrupt ratings. Disconnect test leads before opening the battery door. F1: Fast Fuse 630mA 1000V 10kA size : 6.3 x 32, UK standard F2: Fuse 10A 1000V 30kA size : 10 x 38, UK standard

4.4 Metrological check

Like all measuring or testing devices, the instrument must be checked regularly. This instrument should be checked at least once a year. For checks and calibrations, contact one of our accredited metrology laboratories (information and contact details available on request), at our Chauvin Arnoux subsidiary or the branch in your country.

4.5 Service, and Parts

For all repairs before or after expiry of warranty, please return the device to your distributor.English 4000- and 6000-count TRMS digital multimeters

Except as otherwise stated, our warranty is valid for 2 years starting from the date on which the equipment was sold. Extract from our General Conditions of Sale provided on request. The warranty does not apply in the following cases: Inappropriate use of the equipment or use with incompatible equipment Modifications made to the equipment without the explicit permission of the manufacturer’s technical staff Work done on the device by a person not approved by the manufacturer Adaptation to a particular application not anticipated in the definition of the equipment or not indicated in the user’s manual Damage caused by shocks, falls, or floods.

Delivered with a paper user’s manual, 10 languages a set of 2 x 1.5V batteries AA Test lead elbowed 1,5 m red with 4 mm probe tips Test lead elbowed 1,5 m black with 4 mm probe tips K adaptator + sensor Optional (references : consult http://www.chauvin-arnoux.com) Probes Set of Test lead RD/BK with test probes-elbowed male banana plugs PVC Set of Test lead RD/BK with test probes-elbowed male banana plugs silicon Test probes cat III/IV Crocodiles clips Safety adapter and K sensor Temperature probe for multimeter banana inputs with 18 mm spacing measurement from -50°C to +350°C K sensor adapter and Temperature probe for multimeter banana inputs with 18 mm spacing measurement from -50°C to +200°C Miscellaneous Carrying case External charger for accu. 1.5V Fuse Fuse F 1000V 10A 10x38mm Fuse F 1000V 0.63A 6.3x32mm

Referal conditions Temperature +23°C ± 3°C. Humidity 45% to 75% RH Supply Full battery (no low bat signal display) or accu. 1.5 VAA Ni-MH Freq. for AC signal 45-65 Hz Pure AC signal No other rotating magnetic field No other electrical field General measure characteristics

• in DC AC ≤0,1% of the DC signal

Spanning of stroom AC of DC

0.01nF 5% + 5D 10.00nF