EXTOL PREMIUM Digital Multimeter With Inverse LCD Screen User Manual

EXTOL PREMIUM Digital Multimeter With Inverse LCD Screen

MEASURING RANGES

WARNING: Carefully read this user‘s manual before first using the device and keep it with the product so that a user can become acquainted with it. Prevent this user‘s manual from being destroyed.

SAFETY WARNINGS

• Check the device for damage before using it. Check that device‘s plastic cover is not damaged, that the insulation on the measuring probes is not damaged, that the display is not cracked, etc. Do not use the device if it is damaged and have this condition repaired.
• Do not use the device in an environment where there is a fire or explosion hazard or in a humid or wet environment. Keep your hands perfectly dry when performing measurements.
• Do not touch the uninsulated metal parts of the measuring probes while performing measurements. Hold the probes by the insulated grip parts.
• When this device is already connected to the measured circuit, DO NOT TOUCH the input terminals that are not being used.
• Before changing the work mode, disconnect the test probes from the circuit.
• If the voltage measurement exceeds the value of 30 V direct- -current voltage or 25 V alternating-current voltage, the user must be careful to prevent injury by electrical shock.
• Using an incorrect mode or range may result in risks, be careful. If the value on the input is outside the range then „OL“ will be shown on the display.
• An insufficiently charged battery will cause the subtraction of incorrect values. If the batteries are not sufficiently charged, replace them. Do not perform any measurement unless the battery compartment cover is properly closed.

WARNING

• For safety reasons, do not use the CAT III overvoltage category measuring device to measure electrical installations requiring a level IV overvoltage category (CAT IV). The specifications for the individual overvoltage categories CAT I to CAT IV according to EN 61010-1 are provided below and are illustrated in the following picture.

• Electrical installations requiring an overvoltage category IV (CAT IV) measuring device are the following: Electrical equipment located in the near vicinity of a building‘s power source, between the input into the building (junction box) and the main switchboard.

• Such equipment may include, for example, tariff electricity meters and primary overvoltage protection devices.

• Electrical installations requiring an overvoltage category III (CAT III) measuring device are the following: Equipment that is part of the electrical installation in a building. Such equipment includes power sockets, circuit breaker boards, and certain other main power control installations. The measuring device meets the requirements for the CAT III protection level only up to the specified voltage value, and it must not be used for measuring installations requiring the CAT III level which are at higher voltages.

• Overvoltage category II (CAT II) includes equipment intended to be powered from the building installations.
  This applies both for equipment connected to power sockets as well as for permanently connected equipment.

• Overvoltage category I (CAT I) covers equipment intended for connection to mains power, where the equipment incorporates measures that significantly and reliably reduce transitional overvoltage to a level that cannot present a hazard. Overvoltage category I (CAT I) is not relevant to norm EN 61010-1, according to which the measuring device has been tested.

• A measuring device with a higher overvoltage category (CAT) can be used to measure installations belonging to a lower overvoltage category, e.g. a multimeter with CAT III protection for the defined voltage can be used to measure CAT II installations in the permitted voltage range, however, a CAT III multimeter cannot be used for measuring installations belonging in category CAT IV.

• The device must be used for measuring using measuring probes intended only for the given CAT overvoltage category with the specified maximum voltage for the given voltage category, i.e. measuring probes with a specified CAT III for the specified voltage cannot be used for measurements on CAT IV installations.

Description of the device

LCD DISPLAY

FUNCTION BUTTONS

1

|

• Hold down this button for longer than 2 seconds to turn this device on/off.
• If this device is not used for longer than 5 minutes, it will shut automatically.
• One minute before the automatic shut-off, the built-in buzzer will beep 5 times.
• If you wish to cancel the automatic shut-off function, hold down the “ RANGE ” button while turning on the device. When the cancellation of this function is performed correctly, the device will beep five times.

If the red probe (positive pole) is connected to the terminals for measuring current, press this button to toggle between the direct current DCA and alternating current ACA measurement modes.

---|---

2

| Press this button once to hold the current value on the display (HOLD). If you wish to continue using it the standard manner, press this button again. Holding down this button for longer than 2 seconds will result in entry into the relative value measurement mode (REL). This device will

store the current value as a reference value for the subsequent values. The display will be set to zero and the stored value will be subtracted from all the subsequent values. Pressing this button again will exit the relative value measurement mode.

---|---

3

| Pressing this button will scroll through the direct-current voltage (DCV), alternating-

-current-voltage (ACV) and non-contact (NCV)

measurement testing modes.

4

| Pressing this button will toggle between the testing modes: DCmV (<99.99 mV), ACV (<99.99 mV), and temperature.

5

| Pressing this button will scroll through the testing modes: Resistance, Diode/Continuity and Capacitance.

6

| When this button (RANGE) is pressed once, you will enter the manual range adjustment mode. In the manual range adjustment mode, the range will increase each time the button is pressed. Once the highest range is reached, the next time the button is pressed the device will return to the lowest range. To exit the manual range adjustment mode, hold down this button for longer than 2 seconds.

7

| Press this button when the device is set for measurement of ACV. The primary measurement display will show the current frequency (1–100 kHz), while the secondary measurement display will show the current work cycle.

Press this button when the device is set for measurement of ACV. The primary measurement display will show the current frequency (1-5 MHz), while the secondary measurement

the display will show the current work cycle.

INPUT TERMINALS

A| Input terminal for measuring alternating/ direct current up to a value of 9.999 A.
---|---
μA/ mA| Input terminal for measuring alternating/ direct current up to a value of 99.99 mA.
COM| Common (return) terminal for all measurements.

VΩHz

| Inputterminalformeasuringthetheseparameters:

1.  Alternating/direct- -current voltage
2. Temperature  7. Diode
3. Continuity
4.  Resistance
5. Capacitance
6. Work cycle
7. Frequency

INSTRUCTIONS FOR MEASUREMENT

Measuring alternating/direct-current voltage

1. Connect the black probe to the COM terminal and the red test wire to the VΩHz terminal.
2. If you wish to measure voltage values lower than 99.99 mV, press button „mV˚C˚F“, press this button once if you wish to measure direct-current voltage in mV (DCmV) and if you wish to measure alternating-current voltage in mV (ACmV), press this button twice. If you wish to measure voltage values greater than 99.99 mV, press the button „V NCV“, press this button once if you wish to measure direct-current voltage in V and if you wish to measure alternating- -current voltage in V, press this button twice.
3. When you wish to measure voltage, place the tips of the probes on to the correct testing point of the circuit (red probe on the positive pole and the black probe on the negative pole).
4. Read the measured value off the display (when measuring ACV, the frequency is automatically shown on the secondary display).

WARNINGS

• Do not measure voltage the value of which exceeds the limit values specified in the technical specifications.
• During measurement, do not touch high voltage circuits.

Measuring alternating/direct current

ATTENTION

• Measure current approaching a value of 10 A for max. 5 seconds, while the interval between measurements must be longer than 3 minutes. Lower voltage values (<10 A) should be measure for less than 10 seconds.

1. Connect the black probe to the COM terminal and the red probe to the A/mA terminal or the μA/mA terminal (make the selection based on the value of the measured current – max. permitted current value forthe terminal is shown at the terminal). If the Continuity / Diode function was previously set, then press one of the three big rectangular buttons on the left hand side.
2. Press the button „ “ to toggle between the ACA or DCA modes (it will not be possible to toggle between the ACA/ DCA modes without the test probes being connected).
3. Disconnect the power supply from the measured circuit, connect the test probes during the disconnection and then connect the power supply.
4. Read the measured current of the display.

WARNINGS

• Do not measure current the value of which exceeds the limit values specified in the technical specifications.
• When measuring an unknown current use terminal
• A. If necessary, you can later switch to terminal μA.
• Do not supply voltage under this setting.

Measuring resistance

1. Connect the black test wire to the COM terminal and the red test wire to the VΩHz terminal.
2. Press the „ “ button once to enter the Resistance mode.
3. If you wish to measure resistance, place the tips of the probes onto the required test points of the circuit.
4. Read the measured resistance of the display.

WARNINGS

• Before testing resistance, disconnect the power supply to the circuit and discharge all capacitors.
• Do not supply voltage under this setting.

Diode and continuity test

1. Connect the black probe to the COM terminal and the red probe to the VΩHz terminal.
2. Press the „ “ button twice to enter the Diode / Continuity mode.
3. If you wish to measure continuity, place the tips of the probes onto the required test points of the circuit. If the buzzer is sounded, the measured circuit is not interrupted.
4. If you wish to test diodes, connect the red test wire to the anode part of the diode and the black test wire to the cathode part of the diode. Then read the current bias off the display. If the polarity of the test wires is reversed relative to the polarity of the diodes or if the diode is damaged, then „ OL “ will be shown on the display.

WARNINGS

• Do not supply voltage under this setting.
• Before testing a diode, disconnect the power supply to the circuit and discharge all capacitors.

Capacity measurement

1. Connect the black probe to the COM terminal and the red probe to the VΩHz terminal.
2. Press the „ “ button three times to enter the Capacitance mode.
3. If you wish to test a capacitor, connect the red probe to the anode part of the capacitor and the black probe to the cathode part of the capacitor.
4. Read the measured capacitance value off the display once this value stabilises.

WARNINGS

• Before testing capacitance, disconnect the power supply to the circuit and discharge all capacitors.

Measuring frequency and the work cycle

1. Connect the black probe to the COM terminal and the red probe to the VΩHz terminal.
2. If the value of the measured frequency is ≤ 100 kHz, pressthe „V NCV“ button until the device is set for measuring alternating-current voltage in V. Touch the required measuring points with the pins of the probes and the frequency will be shown on the secondary measurement display. Then press the button „Hz%“ and the primary measurement display will show the frequency, whilst the secondary measurement display will show the work cycle.
3. If the value of the measured frequency is in the range 100 kHz to 5 MHz, press the „mV˚C˚F“ button twice,  to enter the alternating-current voltage measurement mode in mV. Touch the required measurement points] with the tips of the probes and the frequency will be shown on the secondary measurement display. Then press button „Hz%“ and the primary measurement display will show the frequency, whilst the secondary measurement display will show the work cycle.

Measuring temperature

ATTENTION

• The device enables the measurement of temperature from -20°C to 1000°C, however, the supplied temperature probe can only measure in the range -20°C to 700°C.

1. Connect the black probe to the COM terminal and the red probe to the VΩHz terminal.
2. Press the „mV˚C˚F“ button three times to enter the Temperature mode. Both displays will show the room temperature. The primary measurement display will show the temperature in degrees Celsius and the secondary measurement display will show the temperature in degrees Fahrenheit.
3. Touch the required measurement points with the tips of the probes.
4. Read the measured temperature off the display.

Non-contact detection of alternating-current voltage NCV

1. Press the „V NCV“ button twice to enter the NCV mode.
2. Hold the device and move it around. As soon as the device detects alternating-current voltage in the vicinity, the built-in buzzer will beep. The higher the voltage value, the faster the device will beep.

ATTENTION

• NCV detection is only indicative, and detection is dependent on shielding by the environment. If the device does not detect voltage with the NCV method, it does not necessarily mean that there is no live conductor under-voltage or that there is no life-threatening voltage inside the conductor in the tested location (e.g. inside a wall); this depends on the distance from the conductor.

Maintenance

Apart from the replacement of batteries and fuses, do not attempt to repair or modify this device unless you have the appropriate qualification for the task and unless you know the relevant instructions for calibration, performance testing and servicing.

Cleaning the product

• Clean the device using a damp cloth and diluted cleaning agent, to prevent water from entering the device. Do not] use abrasive cleaning products or solvents. Soils and humidity on the terminals may affect measurement results.
• Prior to cleaning the device, remove the input signals.

Replacing batteries

In the event that the „ “ icon is shown on the display, replace the batteries according to the following procedure:

1. Prior to replacing batteries, always disconnect the test probes from the measured circuit and turn off this device.
2.  Loosen the screw on the battery compartment cover and remove this cover.
3. Replace the flat batteries with new batteries of the same type.
4. Put the battery compartment cover back on and tighten the respective screw.

Replacing fuses

In the event that a fuse is blown or the fuse is not working correctly, its replacement must be performed as follows:

1. 1. Prior to replacing a fuse, always disconnect the test probes and turn off the measuring device.

2. Screw off the four screws on the rear cover of the device and remove the cover. The fuses are inside the device.
3. Replace the fuse with a new fuse of the same type.
4. Put the cover back on and secure it with the screws.

TECHNICAL SPECIFICATIONS

Basic Specifications

Display (LCD)| Maximum value 9999
Range setting| Automatic / Manual
Material| ABS+TPE
Frequency refresh rate| 3 times/sec
True RMS| yes
Data retention| yes
Display backlight| yes
Insufficient battery voltage indicator| yes
Automatic shut off| yes
Technical specifications

Dimensions| 146 × 74 × 34 mm
Weight without batteries| 168 g
Battery type| Battery 1.5V type AA– 2 pcs.
Environment specifications

Operating conditions| Temperature| 0~40 °C
Humidity| <75 %
Storage conditions (without battery)| Temperature| 0~40 °C
Humidity| <80 %

ELECTRICAL SPECIFICATIONS

Note: The device can be used to measure lower values than] the values provided in the respective row of the table in the range column.

Direct-current voltage

(V)

| 999.9 mV| 0.1 mV|

± (0.5 %+3)

9.999 V| 0.001 V
99.99 V| 0.01 V
999.9 V| 0.1 V
Direct-current voltage (mV)| 9.999 mV| 0.001 V
99.99 mV| 0.01 mV
Alternating- current voltage

(V)

| 999.9 mV| 0.1 mV|

± (1.0 %+3)

9.999 V| 0.001 V
99.99 V| 0.01 V
750.0 V| 0.1 V
Alternating- current voltage (mV)| 9.999 mV| 0.001 V
99.99 mV| 0.01 mV
*Frequency response rate ACV: 40 Hz – 1 kHz
Direct current (A/mA)| 9.999 A| 0.001 A| ± (1.0 % +3)
999.9 mA| 0.1 mA
Direct current (μA/mA)| 9.999 A| 0.001 A| ± (0.8 % +3)
999.9 mA| 0.1 mA
Alternating current (A/mA)| 9.999 A| 0.001 A| ± (1.2 % +3)
999.9 mA| 0.1 mA
Alternating current(μA/mA)| 99.99 mA| 0.01 mA| ± (1.0 % +3)
9,999 μA| 1 μA
Frequency response for alternating current: 40 Hz–1 kHz

Resistance

| 99.99 Ω| 0.01 Ω| ± (1.0% +3)
999.9 Ω| 0.1 Ω|

± (0.5% +3)

9.999 kΩ| 0.001 kΩ
99.99 kΩ| 0.01 kΩ
999.9 kΩ| 0.1 kΩ
9.999 MΩ| 0.001 MΩ| ± (1.5% +3)
99.99 MΩ| 0.01 MΩ| ± (3.0% +5)

Capacitance

| 9.999 nF| 0.001 nF| ±(5.0%+20)
99.99 nF| 0.01 nF|

± (2.0% +5)

999.9 nF| 0.1 nF
9.999 μF| 0.001 μF
99.99 μF| 0.01 μF
999.9 μF| 0.1 μF
9.999 mF| 0.001 mF| ± (5.0% +5)
Function| Scope| Resolution| Accuracy
---|---|---|---
Frequency – Measures only in this range

1 Hz-5 MHz

(<36 V AC)/

1 Hz-100 kHz (> 36 V AC)

| 99.99 Hz| 0.01 Hz|

± (0.1% +2)

999.9 Hz| 0.1 Hz
9.999 kHz| 0.001 kHz
99.99 kHz| 0.01 kHz
999.9 kHz| 0.1 kHz
5.000 MHz| 0.001 MHz
Work cycle| 1%to99%| 0.1 %| ± (0.1% +2)

Temperature

| (-20 to

1 000) °C

| 1 °C|

± (2.5% +5)

(-4to1832)°F| 1 °C
Diode| yes
Continuity| yes
NCV| yes

PROCEDURE FOR CALCULATING MEASUREMENT ACCURACY

An alternating-current voltage, e.g. 180.1 V is shown on the display. According to the table, for this voltage, the specified accuracy is ± (1.0% +3).

Measurement accuracy is calculated as follows:

1. Calculate the uncertainty range: ±1% from 180.1 V;  the uncertainty range is: 178.3-181.9 V.
2. To the decimal value then add the number „3“, the measured voltage is in the range: 178.6-182.2 V.

**The temperature correction coefficient for calculating accuracy at <18°C or

28°C is: 0.1**

• At a measurement temperature of <18°C or >28°C, the calculation procedure is the same as above, however, 0.1 is added to X%, and accuracy is then expressed according to ± (1.1% +3).

Meaning of markings

Storage

• Store the device in a dry location that is out of reach of children at temperatures up to 40 °C enclosed in a protective case. Protect the device against direct sunlight,] radiant heat sources, humidity, and ingression of water and frost. Prior to storing the device, take out the batteries.

Warranty period (rights relating to faulty performance)

• The product is covered by a 2-year guarantee from the date of sale according to law. If requested by the buyer, the seller is obliged to provide the buyer with the warranty conditions (rights relating to faulty performance) in written form according to law.

CONTACTS

• www.extol.eu
• [email protected]
• Manufacturer: Madal Bal a. s.
• Date of issue: 29/10/2019

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