UT123 - Multimètre Uni-T - Notice d'utilisation et mode d'emploi gratuit

Type de produit	Multimètre numérique
Marque	Uni-T
Modèle	UT123
Dimensions	135 x 70 x 30 mm
Poids	180 g (avec piles)
Alimentation	2 piles AAA 1,5 V
Affichage	Écran LCD 3 ½ digits (2000 points)
Plages de mesure	Tension AC/DC, courant DC, résistance, continuité, diodes
Tension DC	200 mV / 2 V / 20 V / 200 V / 600 V
Tension AC	200 V / 600 V
Courant DC	200 µA / 2 mA / 20 mA / 200 mA / 10 A
Résistance	200 Ω / 2 kΩ / 20 kΩ / 200 kΩ / 2 MΩ / 20 MΩ
Test de continuité	Oui (seuil < 30 Ω, buzzer)
Test de diodes	Oui
Sécurité	CAT II 600 V
Indice de protection	IP20
Accessoires fournis	Piles, cordons de mesure, manuel d'utilisation
Entretien et nettoyage	Essuyer avec un chiffon humide et non abrasif. Ne pas utiliser de solvants.
Réparabilité	Pièces détachées disponibles via le fabricant. Réparation par un professionnel recommandée.

FOIRE AUX QUESTIONS - UT123 Uni-T

Comment mesurer la tension continue avec le UT123 ?

Tournez le sélecteur sur la position V⎓. Branchez les cordons : le noir dans la borne COM, le rouge dans la borne V/Ω. Placez les pointes de test sur les points à mesurer. Lisez la valeur sur l'écran LCD.

Comment tester la continuité d'un circuit ?

Mettez le sélecteur sur la position continuité (symbole onde ou diode avec trait). Branchez les cordons comme pour une résistance. Si la résistance est inférieure à 30 Ω, un bip sonore retentit.

Quelle pile utiliser pour le UT123 ?

Le UT123 fonctionne avec 2 piles AAA 1,5 V. Ouvrez le compartiment à l'arrière pour les remplacer. Respectez la polarité indiquée.

Comment mesurer un courant continu jusqu'à 10 A ?

Tournez le sélecteur sur la position 10 A⎓. Branchez le cordon rouge dans la borne 10 A (au lieu de V/Ω). Le cordon noir reste dans COM. Ouvrez le circuit et insérez le multimètre en série. Ne dépassez pas 10 A et respectez le temps de mesure (max 10 secondes toutes les 15 minutes).

Que signifie CAT II 600 V ?

C'est une classification de sécurité. CAT II signifie que l'appareil est conçu pour des mesures sur des circuits alimentés depuis une prise secteur (monophasé) jusqu'à 600 V par rapport à la terre.

Comment remplacer le fusible du UT123 ?

Le UT123 est protégé par un fusible interne pour les gammes de courant. Ouvrez le boîtier (dévisser les vis à l'arrière) et remplacez le fusible par un modèle identique : F 200 mA/250 V pour les faibles courants et F 10 A/250 V pour la gamme 10 A.

Pourquoi l'affichage clignote ou indique '1' ?

Un affichage '1' ou clignotant signifie généralement un dépassement de gamme (overload). Sélectionnez une gamme plus élevée ou vérifiez que les cordons sont correctement branchés.

Comment conserver le UT123 ?

Rangez le multimètre dans un endroit sec, à l'abri de l'humidité et des températures extrêmes. Retirez les piles si vous ne l'utilisez pas pendant plusieurs mois. Nettoyez avec un chiffon doux et sec.

Quelles sont les précautions de sécurité à prendre ?

Ne mesurez jamais une tension supérieure à 600 V. Utilisez les cordons adaptés et en bon état. Ne touchez pas les pointes de test pendant une mesure. Respectez les calibres et les bornes spécifiées.

Comment utiliser la fonction test de diode ?

Placez le sélecteur sur la position diode (symbole diode). Branchez le cordon rouge dans V/Ω et le noir dans COM. Appliquez la pointe rouge sur l'anode et la noire sur la cathode. L'écran affiche la tension directe (environ 0,6 V pour une diode silicium). Inversé, il affiche '1' (blocage).

MODE D'EMPLOI UT123 Uni-T

UT123

Residential Multimeter User manual

Preface

Thank you for purchasing the new UT123 residential multimeter. In order to use this product safely and correctly, please read this manual thoroughly, especially the Safety Instructions.

After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably close to the device, for future reference.

Limited Warranty and Liability

Uni-Trend guarantees that the product is free from any defect in material and workmanship within one year from the purchase date. This warranty does not apply to damages caused by accident, negligence, misuse, modification, contamination and improper handling. The dealer shall not be entitled to give any other warranty on behalf of Uni-Trend. If you need warranty service within the warranty period, please contact your seller directly.

Uni-Trend will not be responsible for any special, indirect, incidental or subsequent damage or loss caused by using this device. As some countries or regions do not allow limitations on implied warranties and incidental or subsequent damages, the above limitation of liability may not apply to you.

1. Overview

The UT123 is a pocket-size residential multimeter specially designed for home use. The compact structure makes it easy to hold in one hand, and the EBTN screen allows users to obtain clear readings at maximum angle. The multimeter is designed according to EN61010-1:2010, EN61010-2-030:2010, and EN61326-1:2013 safety standards and is able to safely operate within the CAT III 600V environment.

2. Features

• The battery status detection is automatically completed at the moment of booting: The green light indicates the normal state; the yellow light indicates low battery; the red light indicates very low battery, and there is acousto-optic indication at this time.
  • Automatic identification of ACV/DCV measurement
• Intelligent non-contact electric field detection, which distinguishes the weak electric field by green light, the strong electric field by yellow light, and the super strong electric field by red light
• Full featured protection

⚠️ Before using the meter, please read the Safety Instructions carefully.

3. Safety Instructions

• Do not use the meter if the rear cover is not covered up, or it will pose a shock hazard!
• Before use, please check and make sure the insulation layer of the meter and test leads is in good condition without any damage or broken wires. If you find the insulation layer of the meter housing is significantly damaged, or if you think the meter cannot function properly, do not use the meter.
• When using the meter, your fingers must be placed behind the finger guard ring of the test leads.
• Do not apply voltage over 600V between any meter terminal and earth ground to prevent electric shock and damage to the meter.
• Be cautious when the measured voltage is higher than 60V (DC) or 30Vrms (AC) to avoid electric shock!

- The measured signal is not allowed to exceed the specified limit to prevent electric shock and damage to the meter!

• The range switch should be placed in the corresponding position during measurement.

- Never change the range setting when measuring to avoid damage to the meter!

- Never change the range setting when measuring to avoid damage to the meter. - Do not change the internal circuit of the meter to avoid damage to the meter and user.

- When the "☐" symbol appears on the LCD, please replace the batteries in time to ensure measurement accuracy.

- Do not use or store the meter in high temperature and high humidity environments.

The performance of the meter may be affected

- Clean the meter casing with a damp cloth and mild detergent. Do not use abrasives or solvents! - Safety symbol description

	Low battery		High voltage hazard
	Grounding		AC voltage or current
	Double insulated		DC voltage or current
	Warning

4. Operating Instructions

* The meter has the function of battery self-checking, and can complete the battery status detection within 2 seconds at the moment of booting:
a) When the supply voltage is >2.7V, the indicator on the top of the meter lights up green for 2 seconds, indicating that the power is sufficient, and the meter enters the normal measurement mode accompanied by one beep.
b) When the supply voltage is within 2.4V\~2.7V, the indicator on the top of the meter lights up yellow, and the low battery symbol "☐" appears on the LCD.
c) When the supply voltage is < 2.4V , the indicator on the top of the meter lights up red for 2 seconds, and then the meter powers off. It can only be used after replacing the batteries.

4.1 DC/AC Voltage Measurement (Picture 1)

1) Turn the range switch to the AC voltage position; 2) Insert the red test lead into the "VΩ·℃" jack.
black into the "COM" jack, and make the probes in contact with both ends of the measured voltage (parallel connection to the load);
3) Read the test results on the display.

The meter has the function of ACV/DCV automatic identification (voltage ≥0.5V ). If you want to measure voltage less than 0.5V, press the SELECT button to toggle the AC and DC voltage to lock the measurement mode; After pressing the SELECT button, the meter no longer has the function of ACV /DCV automatic identification, unless you turn the range switch or restart the meter!

Picture 1

Note:

* Do not measure voltage above 600Vrms. Although it is possible to measure higher voltage, it may damage the meter and hurt the user! If the LCD displays "OL", it indicates that the voltage is over range. The input impedance of the meter is 10MΩ. This load effect may cause measurement error when measuring high impedance circuits. If the measured impedance is ≤10kΩ, the error can be ignored (≤0.1%).

* Be cautious to avoid electric shock when measuring high voltage.

* Test known voltage before use to confirm if the meter functions properly!

4.2 Resistance Measurement (Picture 1)

1) Turn the range switch to the resistance measurement pos

2) Insert the red test lead into the "VΩ·4°C" jack, black into the "COM" jack, and make the probes in contact with both ends of the measured resistance (parallel connection to the resistance);

3) Read the test results on the display.

Note:

* Before measuring the online resistance, switch off the power supply of the circuit, and fully discharge all capacitors to avoid damage to the meter and user.
* If the resistance is not less than 0.5Ω when the test leads are shorted, please check if the test leads are loose or abnormal.
* If the measured resistor is open or the resistance exceeds the maximum range, the "OL" symbol will appear on the display.
* Do not input voltage higher than DC 60V or AC 30V.
* Measured value = measured display value - short circuit value of the test leads

4.3 Continuity Measurement (Picture 1)

1) Turn the range switch to the continuity measurement position;

2) Insert the red test lead into the "VΩ·m°C" jack, black into the "COM" jack, and make the probes in contact with the two test points;

3) Measured resistance ≤30Ω : The indicator lights up green accompanied by continuous beeps, indicating that the on-resistance is small, and the LCD displays the corresponding resistance value.

Measured resistance within 31Ω\~420Ω: The indicator lights up red accompanied by no beep, indicating that the on-resistance is large, and the LCD displays the corresponding resistance value. Measured resistance >420Ω: The indicator and buzzer have no response, indicating that the circuit is open. The LCD displays "OL".

Note:

* Before measuring the continuity online, switch off the power supply of the circuit, and fully discharge all capacitors to avoid damage to the meter and user.

4.4 Temperature Measurement (°C/°F Measurement, Picture 2)

1) Turn the range switch to the temperature measurement position;

2) Insert the plug of the K-type thermocouple into the meter, and fix the temperature sensing probe on the object to be tested; read the temperature value on the display after it is steady.

Note:

"OL" symbol appears when the meter is turned on. Only K-type thermocouple/ temperature sensor is applicable (The measured temperature should be less than 300 °C/572 °F).

° F= ° C*1.8+32

Picture 2

4.5 Non-contact AC Electric Field Sensing (Picture 3)

1) To sense whether there is AC voltage or electromagnetic field, please turn the range switch to the NCV position;
2) Bring the front end of the meter close to the measured object to start sensing. The intensity of the electric field sensing is indicated by the LED indicator and the segment "-" on the LCD. The more the segments (up to four segments) are displayed, the higher the electric field intensity and the faster the beep.

Picture 3

4.6 Others

* During measurement, if there is no operation of the range switch or any button for 15 minutes, the meter will automatically shut down to save power. You can wake it up by pressing any button or turning the range switch, and the buzzer should beep once for indication. To disable auto shutdown, turn the range switch to the OFF position, press and hold the SELECT button (≥2 seconds) while power up the meter.

* When you press any button or turn the range switch, the buzzer will beep once. * Buzzer warning:

Input voltage ≥ 600V (AC/DC): The buzzer beeps continuously warning that the range is at its limit. About 1 minute before auto shutdown, the buzzer will make five consecutive beeps; before shutdown, the buzzer will make one long beep.

1. Specifications

Function	Range	Resolution	Accuracy	Max measured value	Bandwidth	Overload protection	Input impedance
DC voltage	4.000V	0.001V	±(0.5%+2)	±600V		600Vrms	10MΩ
	40.00V	0.01V
	400.0V	0.1V
	600V	1V	±(0.7%+3)
AC voltage	4.000V	0.001V	±(1.0%+3)	600V	40Hz-400Hz	600Vrms	10MΩ
	40.00V	0.01V
	400.0V	0.1V
	600V	1V
Resistance	400.0Ω	0.1Ω	±(1.0%+2)	21MΩ		600Vrms
	4.000kΩ	0.001kΩ	±(0.8%+2)
	40.00kΩ	0.01kΩ
	400.0kΩ	0.1kΩ
	4.000MΩ	0.001MΩ	±(1.2%+3)
	20.00MΩ	0.01MΩ	±(1.2%+3)
Centigrade	-40~40°C	1°C	±4°C	350°C		600Vrms
	40~300°C	1°C	±(1.0%+5)
Fahrenheit	-40~104°F	1°F	±6°F	662°F
	104~572°F	1°F	±(2.0%+6)

When switching to the NCV function, the LCD displays "EF"
NCV (non-contact voltage detection)	Electric field sensing	When the front end of the meter is close to the power socket or power cord with about 200V mains supply, the meter indicator will distinguish the intensity of the electric field sensing by "green", "yellow" and "red" light respectively (from weak to strong), and the LCD will synchronously display “—”, “—”, “— — —” or “— — — —” accompanied by beeps.
	Neutral and live wire identification	When the front end of the meter is close to the mains socket at the same distance, the live wire will have a stronger electric field signal than the neutral wire. You can distinguish them according to the number of the “—” displayed and the indication status of the light.
•●) Continuity	Resistance ≤ 30Ω ,continuous beeps; Resistance >31Ω, no beep

General specifications
SELECT button	Switch the scale of the test function cyclically(only applicable to V 宽 ,“ Ω and “C*F).
HOLD button	Turn on/off the lock screen function cyclically, and the bottom left corner of the LCD displays “ 口 ”(only applicable to V 宽 ,“ Ω and “C*F).
Max display	4099
Overload display	OL
Sampling frequency	3 times/second
Polarity display	If negative polarity is input, the “—” symbol will be displayed;No display for positive polarity
Low battery indication	The bottom left corner of the LCD displays “ 口 ”, and at the moment of booting, the indicator on the top of the meter lights up yellow.

Operating conditions
Operating temperature	0°C~40°C (32°F~104°F)
Storage temperature	-10°C~50°C (14°F~122°F)
Relative humidity	0 °C~ below 30 °C: ≤75%30 °C~40 °C: ≤50%
Altitude	0~2000m
Battery	AAA battery 1.5V×2

Safety standards
Design standards	EN61010-1: 2010; EN61010-2-030:2010; EN 61326-1:2013
EMC	RF field (1V/m): Overall accuracy = specified accuracy ± 5% of range RF field (>1V/m): No specified calculation
Measurement standards	CAT III 600V, double insulation and material pollution degree II
Dimensions	130mm×65mm×28mm
Weight	About 130g (including batteries)

Standard accessories
Test leads	1 pair
User manual	1 pc
Thermocouple	1 pc

Note:

To ensure measurement accuracy, operating temperature should be within 18°C\~28°C and the fluctuation range should be within ±1 °C.

Temperature <18°C or >28°C: Add temperature coefficient error 0.1 x (specified accuracy)/°C.

6. Maintenance

Warning: Before opening the rear cover of the meter, switch off the power supply (remove the test leads from the input terminals and the circuit).

6.1 General Maintenance

* Clean the meter casing with a damp cloth and mild detergent. Do not use abrasives or solvents!
* If there is any malfunction, stop using the meter and send it for maintenance.
* The maintenance and service must be implemented by qualified professionals or designated departments.

6.2 Battery Replacement (Picture 4)

* Replace the batteries immediately when the low battery symbol "☐" appears on the LCD,
otherwise the measurement accuracy might be affected. Battery specification: AAA battery 1.5V×2
Battery replacement: Use a screwdriver to unscrew the screw on the battery cover (top), and remove the cover to replace the batteries. Pay attention to the positive and negative polarity when installing the new batteries.

UNI-T®

UNI-TREND TECHNOLOGY (CHINA) CO., LTD.

No. 6, Gong Ye Bei 1st Road,

Songshan Lake National High-Tech Industrial

Development Zone, Dongguan City,

Guangdong Province, China

Tel: [phone]

www.uni-trend.com