MX 23, 5 000/50 000 pts MX 24, 5 000/50 000 pts MX 24B, 5 000/50 000 pts MULTIMETRES NUMERIQUES PORTABLES PORTABLE DIGITAL MULTIMETERS TRAGBARE DIGITAL-MULTIMETER MULTIMETRI DIGITALI MULTIMETROS DIGITALES User's manual Copyright © page 16 Chapter II X03486B00 - Ed.
5 19 6 20 21 (∗) (∗∗) 18 17 16 22 (∗∗) 15 14 13 8 12 9 (∗∗) (∗∗) 11 7 10 1 2 3 (∗) (∗∗) 4 (∗∗) (∗) MX 24 : 50 mADC / mAAC+DC (∗∗) sauf / except / außer / tranne / excepto : MX 23 Multimètres numériques portables
MX 24B : LEGENDE / CAPTION / BESCHREIBUNG / LEGENDA / LEYENDA 1 Borne d’entrée [commutateur de 12 à 22 (à 20 : MX 23)] 2 Entrée de référence du multimètre 3∗ Borne d’entrée 500 mADC / mAAC+DC MX 24 : 50 mADC / mAAC+DC 4∗ Borne d’entrée 10 ADC / AAC+DC 5 Changement de gamme: RANGE 6 Fonctions secondaires: AC+DC 7 Mesure de surveillance 8 Gel de l’affichage 9 Activation du rétro-éclairage 10 Mémorisation automatique 11 Mise hors tension (∗) sauf MX 23 1 Input terminal [switch from 12 to 22 (to 20 : MX 23)] 2
Chapter II USER’S MANUAL CONTENTS 1. GENERAL INSTRUCTIONS ..........................................................................................17 1.1. Symbols used on the instrument .............................................................................17 1.2. Precautions and safety measures ...........................................................................17 1.3. Safety features.........................................................................................................
Chapter II 1. GENERAL INSTRUCTIONS You have just acquired a portable digital multimeter. This compact multimeter is a self-contained with an appropriate mechanical construction, enables hand-held version, with a protective elastomer case. It is designed for a high degree of user safety, maximum protection and unrivalled performance. Thank you for your trust in our products. It complies with safety standard EN 61010-1 (2001), double insulation, relative to electronic measuring instruments.
Chapter II Definition of installation categories : • CAT IV: Measurement category IV corresponds to measurements taken at the source of low-voltage installations. Example: power feeders • CAT III: Measurement category III corresponds to measurements on building installations. Example: industrial machinery or instrument power supplies • CAT II: Measurement category II corresponds to measurements taken on circuits directly connected to low-voltage installations.
Chapter II 1.4. Protection devices This instrument is fitted with various protection devices : ∗ Varistor protection for limiting transients of over 1100 V at the VΩ terminal, particularly 6 kV pulse streams as defined in French standard IEEE 587. ∗ A PTC (positive temperature coefficient) resistor protects against permanent overvoltages of up to 600 V during resistance, capacitance, continuity and diode test measurements. This protection is reset automatically after overload.
Chapter II 1.7. Maintenance and metrological verification Any adjustment, maintenance or repair work carried out on the multimeter while it is live should be carried out only by appropriately qualified personnel, after having taken into account the instructions in this present manual. A "qualified person" is one who is familiar with the installation, construction and operation of the equipment and the hazards involved.
Chapter II 2. 2.1.
Chapter II 3. GETTING STARTED 3.1. Connecting the test leads Connect the black lead to the COM socket (for all measurements). Depending on the position of the selector switch, connect the red lead as follows: Input terminals Rotary selector switch position VLOW Z, VAC+DC, VDC, ADPDC (ADPAC+DC), FREQ, , Ω, (∗) 500 mADC / mAAC+DC or MX 24 : 50 mADC / mAAC+DC (∗) 10 ADC / AAC+DC , VΩ 500 mA or MX 24 : 50 mA (∗) 10 A (∗) (∗) except MX 23 3.2.
Chapter II 3.4.3. Replacing the battery or fuses (except MX 23) Caution ! Disconnect test leads from any circuit under test, turn the meter off and remove test leads from the input terminals . Use the following procedure: 1 - Disconnect test leads from any inputs terminals 2 - Using a appropriate tool, make slide the case bottom of the instrument 3 - Replace the battery or fuse (respect the value and the type). 4 - Replace the immovable part. F1 0.
Chapter II 4. FUNCTIONAL DESCRIPTION 4.1. RANGE / AC+DC key The RANGE key is operative in following positions of the selector switch : VLOW Z, VAC+DC, VDC, Ω, . This key makes it possible : • In AUTO (Autoraging) mode to switch to MANUAL mode (short press). • In MANUAL mode, to select the next range (short press) or return to AUTO mode (long press), the AUTO sign appears on the display. This can be used to switch on the multimeter again after an automatic shutdown.
Chapter II 4.1.3. 10 ADC / AAC+DC Position (except MX 23) 10 ADC DC current measurement (Range 10 ADC) AC+DC key 10 AAC+DC AC+DC current measurement (TRMS) (Range 10 AAC+DC) The AC+DC sign appears on the display. AC+DC key 4.2. MIN / MAX key (except MX 23) If you press this key (long press), you access the surveillance mode (or coming out), in which minimum (MIN), maximum (MAX) and sliding average (AVG) values of the current measurement are stored (capture time ≤ 500 ms).
Chapter II 5. TECHNICAL SPECIFICATIONS 5.1. General Only the values assigned tolerances or given limits are guaranteed values. Values without tolerances are given for information only, without guarantee (standard NFC 42670). The measurement errors must be considered in an environment of reference temperature (refer to § 5.2.10). It is essential that all measuring instruments are regularly calibrated. 5.2. Characteristics Accuracy is ± [% reading (R) + number of digits (D)].
Chapter II Additional error according to crest factor : Crest factor 1,414 2 3 4 5 % of range 100 100 67 50 40 Intermittent signal sounds and « OL » on the display in case of range overpassing. 5.2.3. DC currents (except MX 23) Selector switch position 500 mADC 50 mADC (∗∗∗) 10 ADC (∗∗) Ranges Accuracy 500 mADC 50 mADC 10 ADC 0.
Chapter II 5.2.5. Resistance / Continuity test Selector switch position Ω Ranges Accuracy 500 Ω 500 Ω 5 kΩ 50 kΩ 500 kΩ 5 MΩ 50 MΩ 0.3 % R + 3 D 0.3 % R + 3 D 0.5 % R + 3 D 1%R+5D Measurement current 1 mA 1 mA 100 µA 10 µA 1 µA 100 nA 50 nA Protection (∗) 600 VRMS Resolution 0.1 Ω 0.1 Ω 1Ω 10 Ω 100 Ω 1 kΩ 10 kΩ (∗) Overload protection can be reset automatically.
Chapter II 5.2.8. Frequencies Selector switch position Ranges FREQ 0.62 to 5 Hz 5 to 50 Hz 50 to 500 Hz 500 to 5 kHz 5 to 50 kHz 50 to 500 kHz Accuracy 0.03 % R + 2 D Input impedance 10 MΩ Protection Resolution 600 VRMS 0.0001 Hz 0.001 Hz 0.01 Hz 0.1 Hz 1 Hz 10 Hz 0.05 % R + 1 D Number of count : 5000 / 50 000 Range selection : automatic The frequency is based on 5000 count. With the "Range" button, it is based on 50 000 count.
Chapter II 5.2.10. Environment Reference temperature : Limit range of operation : Rated range of use : Storage temperature range : Temperature coefficient : • additional error in Ω : • frequency sensitivity : Relative humidity : Protection rating : Max. influence in electro-magnetic fields acc. to NF EN 61000-4-3 Sept 06: 23°C ± 5°C 0°C to 40°C -10°C to 55°C -20°C to 70°C max. 0.1 x (accuracy) / K 50 D from -5°C to 0°C max. 0.3 x (sensitivity) / K 0 to 80 % from 0 to 35°C (70 % max.
Chapter II 5.3. Accessories 5.3.1. Supplied with the multimeter 1 set of test leads with safety probes 1 6LF22 9 V battery 1 user’s manual 1 verification certificate 1 protective elastomer case 1 carrying case 280 x 210 x 80 with foam (with some models only) AG0475AZ P01100620 AE0237 5.3.2.
