MX 650 - Multimeter METRIX - Free user manual and instructions

USER MANUAL MX 650 METRIX

User's manual Chapter II - page 16

1.1. Precautions and safety measures

You have just acquired a 4,000-count multimeter clamp. We thank you for your confidence. This multimeter clamp complies with the IEC 61010 norms concerning electronic measuring instruments. For your own safety and to prevent damage to the instrument, you must follow the instructions given in this manual. ∗ This instrument can be used for measuring category III installation circuits, in an environment with a pollution degree of 2 and with a voltage no higher than 600 V in relation to the earth. ∗ Definition of the installation categories (see IEC 61010-1 publication): CAT I : CAT I circuits are circuits protected by low level transient -voltage surge limiters. Example : protected electronic circuits CAT II : CAT II circuits are household or similar appliance power circuits, which may carry medium-level transient voltage surge. Example : household appliance and portable tool power supplies CAT III : CAT III circuits are high-power appliance power circuits, which may carry high-level transient voltage surges. Example : industrial machinery or instrument power supplies CAT IV : CAT IV circuits are circuits which can carry very substantial transient -voltage surges. Example : power feeders The mounted probes must have an assigned measurement category III or IV according to IEC 61010-031 and a rated voltage rated at least equal to 1000 V. Before using, always check that they are in perfect working order.

1.1.2. When using the instrument

• Never exceed the protection limit values indicated in the specifications for each type of measurement.

• When the multimeter clamp is linked to the measurement circuits, do not touch any unused terminals.

• Before changing the function, disconnect the measure- ment leads from the circuit measured.

• Never measure resistances on a live circuit.

Refer to the user's manual Risk of electric shock Double insulationChapter II MX 650 / MX 655

• Before opening the instrument, disconnect it from the measuring circuits and make sure that you are not charged with static electricity, which could irreparably damage the instrument's internal elements.

• A "qualified person" is someone who is familiar with the installation, the construction, the application and the dangers at hand. This person is authorised to power up and power down the installation and equipment, in compliance with safety regulations.

Turn off the power supply. Clean with a damp cloth and soap. Never use abrasive products or solvents. 1.2. Warranty This equipment is guaranteed against any material or manufacturing defects, in accordance with the general conditions of sale. During the warranty period (1 year), the instrument can only be repaired by the manufacturer, who reserves the right to repair the instrument or to exchange all or part of it. If the equipment is returned to the manufacturer, the outgoing transport costs are borne by the customer. The warranty is not applicable in the following cases:

1. improper use of the equipment or use of it in conjunction

with incompatible equipment;

2. modifications to the equipment without the explicit

authorisation of the manufacturer's technical department;

3. work carried out on the instrument by a person not

approved by the manufacturer;

4. adaptation for a specific application, not included in the

definition of the equipment or the user's manual

5. knocks, falls or flooding.

The contents of this manual must not be reproduced in any form without our consent. 1.3. Maintenance Return your instrument to your distributor for any work to be done within or outside the guarantee. 1.4. Unpacking - Repacking All the equipment was checked mechanically and electronically before shipment. Every precaution was taken to ensure that you receive the instrument undamaged. It is a good idea to check quickly to detect any damage that may have occurred during transport. If there is any damage, immediately notify the transporter of the customary reservations. Caution! If you ship this instrument on elsewhere, use preferably the original packaging and indicate the reasons for reshipment as clearly as possible in a note enclosed with the equipment.Chapter II MX 650 / MX 655

2.1. Description of front and rear

Resistance measurement

Frequency measurement

Zero function and relative measurement

3.1. Battery installation and replacement

displayed when the voltage supplied by the batteries is lower than the operating voltage.

2. Before changing the batteries, position the switch to

"OFF", unplug the measurement leads and disconnect the clamp from the circuit being measured .

3. Using a Phillips screwdriver, loosen the 2 screws holding

the back of the case in place.

4. Replace the old battery with a new 9V battery, ensuring

that the polarity is respected.

5. Put the battery flap back in place and tighten the fixing

screws. 3.2. Zero function and relative measurement This function is used to perform RCD measurements (in A, V or Ω) by recording a "calibration value" which is subtracted from the measurements. To activate this function, press on the ΔREL button (the "

symbol is displayed). The last value measured becomes the reference value which will be subtracted from any subsequent measurements. To display the reference value, press again on the ΔREL button (the value is displayed and the " " symbol flashes). To quit this function, press the zero button for 2 seconds. 3.3. Memory It is possible to freeze the value displayed by pressing on the "HOLD" button. To deactivate this function, press the "HOLD" button a second time. 3.4. Automatic range MX 650 and MX 655 multimeter clamps have automatic range selection (Autorange). On the MX 650 model, the range change can be "forced" manually by holding the RANGE button down (the manual range symbol appears). The user can then choose the position of the decimal point with short presses on the RANGE button. To quit manual range, you must hold the RANGE button down for at least 2 seconds; the clamp then returns to automatic range selection mode. 3.5. Auto cut-off The clamp shuts down automatically after 30 minutes if no operations are performed ( symbol is displayed). To deactivate this function, press and hold down the ΔREL button. Then, switch the clamp on using the selector switch. Release the button when a buzzing signal confirms the manoeuvre (the symbol is no longer displayed).Chapter II MX 650 / MX 655

3.6. PEAK function (1 ms) This function enables 1 ms voltage or current PEAK signals to be captured. Before a signal is captured, the clamp must first be calibrated by holding the PEAK button down for more than 2 seconds, until "CAL" is displayed, indicating that the offset has been correctly taken into account. Choose the positive or negative sign of the peak (P+ or P-) with short presses on the PEAK button. To quit the manual range, you must hold the RANGE (MX

/ (MX 655) button down for at least 2 seconds; the clamp then returns to normal mode.

3.7. MAX MIN function (500 ms) To activate the MAX MIN function, press on the MAX MIN button. The MAX value is then displayed. If you press on the button again, the MIN value will be displayed. If you press on the button a third time, the instantaneous measurement is displayed (however, the "MAX MIN" symbol flashes, indicating that the function is still active). To quit the manual range, you must hold the MAX MIN button down for at least 2 seconds; the clamp then returns to normal mode.

(alternating signal) should be displayed. If not, press on the / button, to make it appear. Connect the red test lead to the "+" input terminal and the black test lead to the "COM" input terminal. Then place the touch prods in contact with the points where the AC voltage is to be measured. Then read the result on the display.

4.2. DC voltage measurement

Press on the / button to display the symbol (direct signal). Connect the red test lead to the "+" input terminal and the black test lead to the "COM" input terminal. Then place the touch prods in contact with the points where the DC voltage is to be measured. Then read the result on the display.

• (MX 655) Set the switch to 1000 A . The symbol (alternating signal) should be displayed. If not, press on the / button, to make it appear. Open the clamp jaws by pressing the trigger. Position the clamp around the conductor to be measured. Release the trigger. Check the clamp is properly closed. Read the result of the measurement on the display. If reading is difficult, press the HOLD button and read the result afterwards. If necessary, for better resolution you can move to a lower range by means of the selector switch. Note: For safety reasons, disconnect the measuring leads before measuring current. The clamp should encircle only one conductor, otherwise the measurement result may be incorrect. The best measurement is obtained with the conductor centred in the middle of the jaws.Chapter II MX 650 / MX 655

4.4. Measurement of direct current (MX 655 only)

Set the switch to 1000 A

Press on the / button to display the symbol (direct signal). Once the display is stabilised, press on the ΔREL button to automatically reset the DC zero. Then follow the same procedure as for measuring alternating current. See previous §. Note: The correct connection direction to obtain a positive value is indicated on the right- hand jaw.

Set the switch to Ω. Connect the red test lead to the "+" input terminal and the black test lead to the "COM" input terminal. Place the touch prods in contact with the points to be measured and read the result on the display.

Note: Always ensure that the circuit is disconnected from the

ower supply before measuring resistance! To measure low resistances, it is preferable to offset the resistance of the measurement leads. To do this, short-circuit the lead touch prods then press the

REL button before taking the measurements.

4.6. Continuity test with buzzer 600V

Connect the red test lead to the "+" terminal and the black to the "COM" terminal. Put the touch prods into contact with the circuit to be tested. If the resistance is less than R < 75 Ω ± 25 Ω, the buzzer will make a continuous sound. Note : Always ensure that the circuit is disconnected from the power supply before measuring continuity! To offset lead resistance, short circuit the lead touch prods, then press on the

Connect the red test lead to the "+" terminal and the black test lead to the "COM" terminal. Put the red touch prod into contact with the diode anode and the black prod into contact with the cathode. Read the value of its threshold voltage off the display. Note: Always ensure that the circuit is disconnected from the power supply before testing diodes! If the connection is made back to front, the display indicates "OL" (Overload); this enables the user to distinguish the anode from the cathode.Chapter II MX 650 / MX 655

Set the switch to "Hz".

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

Place the touch prods in contact with the points whose frequency is to be measured.

Read the result on the display.

4.9. Measurement of the current frequency

Set the switch to "Hz". Open the clamp by pressing the trigger. Encircle the conductor and close the jaws correctly by releasing the trigger. Read the result on the display. Note: For safety reasons, disconnect the clamp measuring leads before measuring current frequency. The clamp should encircle only one conductor, otherwise the measurement result may be incorrect.

Note: To measure frequency, either the input terminals (voltage) or the clamp jaws (current) can be used, but the two sources should never be used at the same time.Chapter II MX 650 / MX 655

5.1. General Only the values assigned tolerances or the limits declared constitute guaranteed values. The values without any tolerance are given as indications. The symbol is displayed when input signal exceeds measuring limit in 40 A~ (MX 650), 40 and 400 A~ (MX 655), resistance and continuity range. In voltage, current and frequency range, this symbol will not be shown even the read reach the measuring limit of : 750 VAC, 1000 VDC, 1000 AAC/DC, 10 Hz. 5.2. Characteristics Accuracy is to within ± [% of the reading (L) + number of counts (ct)] in the reference conditions indicated in the appendix. (MX 655) When measuring U rms and I rms, add ± 1% L additional error margin, from 5% to 50% of the range for a maximum peak factor of 6, and from 5% to 100% of the range for a peak factor of between 1.4 and 3. Over and above these limits, accuracy is not specified.

5.2.1. Direct voltage (automatic ranges)

(MX 650) Range Meas. range Resolution Accuracy 400 V 0.2 to 399.9 V 0.1 V 0.75% L + 2 ct 1000 V 400 to 1000 V 1 V 0.75% L + 2 ct Protection against overloads: 1000 Vrms (MX 655) Range Meas. range Resolution Accuracy 400 V 0.2 to 399.9 V 0.1 V 1% L + 2 ct 1000 V 400 to 1000 V 1 V 1% L + 2 ct Protection against overloads: 1000 Vrms

1.8% L + 5 ct 750 V 400 to 750 V 50...500 Hz 500…1000 Hz 1 V 1.5% L + 5 ct 1.8% L + 5 ct Input impedance: 10 MΩ Protection against overloads: 1000 Vrms

5.2.3. Direct current (MX 655 only)

Range Meas. range Resolution Accuracy 40 A 0.10 to 39.99 A 0.01 A 2.5% L + 10 ct 400 A 40.0 to 400.0 A 0.1 A 2.5% L + 10 ct 1000 A 400 to 1000 A 1 A 2.5% L + 10 ct Protection against overloads: 1200 ARMSChapter II MX 650 / MX 655

MX 655 max 1.7 mA max 6 V Protection against overloads: 600 Vrms

5.4. General information Digital display 3 ¾ digit LCD with max. reading of 3,999 counts Analogue display 42-segment bargraph Polarity When a negative signal is applied, the signal appears. Low battery indicator is displayed when the voltage supplied by the batteries is lower than the operating voltage. Measurements are no longer guaranteed. Power supply Battery: 9 V, NEDA 1604, 6F22, 006P or alkaline Typical autonomy: 180 hours (MX 650) 36 hours (MX 655) with alkaline battery and without buzzer function. Protection level of the housing IP30 according to NF EN 60529 Maximum jaw opening MX 650: ∅ 36 mm MX 655: ∅ 40 mm Dimensions 246 x 93 x 43 mm Weight 400 g (with battery)

5.5. Environmental conditions

Operation: 0°C to 40°C, < 70 % RH Storage: -10°C to 60°C, < 80 % RH

Immunity: acc. to EN 61326 Emission: acc. to EN 61326 5.6. Delivery configuration Instrument delivered with: 1 set of measuring leads (one black, one red) 1 x 9 V alkaline battery 1 carrying case 1 user's manual 1 verification certificate