DMM230 - Multimeter MULTIMETRIX - Free user manual and instructions

USER MANUAL DMM230 MULTIMETRIX

User's manual Chapter II - page 17

1.1 Precautions and safety measures ......................................... 19

3.2 AC voltage measurements (frequency, duty cycle) ................ 23

3.6 AC current measurements (frequency, duty cycle) ................ 25

1.1 Precautions and safety measures

You have just acquired a DMM230 RMS multimeter. Thank you for your confidence. It measures AC/DC Voltage, AC/DC Current, Resistance, Frequency (electrical & electronic), and test diodes and Continuity. It features a waterproof, rugged design for heavy duty use. Proper use and care of this multimeter will provide many years of reliable service. This multimeter complies with the IEC 61010-1 and IEC 61010-2-033 standards concerning electronic measurement instruments. For your own safety and to prevent damage to the instrument, follow the instructions in this manual. Be careful to adhere to storage conditions. This handheld autonomous instrument was designed for: - Indoor use - Use in pollution 2 degree environments - In altitudes lower than 2,000 meters - In temperatures ranging from 5°C to 40°C - It can be used up to 1,000 V on category III circuits or 600 V on category IV circuits. MEASUREMENT CATEGORIES (IEC 61010-2-033) CAT II: MEASUREMENT CATEGORY II is applicable to test and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low-voltage MAINS installation. This part of the installation is expected to have a minimum of two levels of overcurrent protective devices between the transformer and the connecting points of the measuring circuit. Example : measurements on MAINS CIRCUITS of household appliances, portable tools and similar equipment. CAT III: MEASUREMENT CATEGORY III is applicable to test and measuring circuits connected to the distribution part of the building’s low-voltage MAINS installation. This part of the installation is expected to have a minimum of one level of over-current protective devices between the transformer and possible connecting points. Example : measurements on distribution boards (including secondary electricity meters), circuitbreakers, wiring, including cables, bus-bars, junction boxes, switches, socket -outlets in the fixed installation, and equipment for industrial use and some other equipment such as stationary motors with permanent connection to the fixed installation. CAT IV: MEASUREMENT CATEGORY IV is applicable to test and measuring circuits connected at the source of the building’s low-voltage MAINS installation. This part of the installation could have no over- current protective devices between the transformer and connecting points of the measuring circuit.Chapter II 20 DMM230 Example : measurements on devices installed before the main fuse or circuit breaker in the building installation.

1.1.2 When using the instrument

- Never exceed the protection limiting values indicated in the specifications for each type of measurement. - When the multimeter is connected to the circuits to be measured, do not touch any unused terminals. - Before changing function, disconnect the measurement leads from the circuit measured. - Never measure resistances or test diodes, etc., on a live circuit.

According to WEEE directive 2002/96/EC Refer to the user's manual Risk of electric shock Double insulation

Before opening the instrument, disconnect it from the circuits to be measured and make sure that you are not charged with static electricity, which could irreparably damage the instrument's internal elements.Chapter II DMM230 21

Disconnect external circuit leads and turn off the instrument. Clean with a damp cloth and soap. Never use abrasive products or solvents. Make sure the instrument is perfectly dry before using it again.

1.16 Protection factor (PF)/Humid Environment

This instrument has a PF67 protection factor, which means that it is extremely waterproof and will not be damaged by water immersion (when turned off). However, the instrument and its accessories must be completely dry (including inside measurement terminals) before being used again.

This equipment is guaranteed against any material or manufacturing flaws, as specified in the general terms of sale. During the guarantee 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 guarantee is not applicable in the following cases:

1. improper use of the equipment or use 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

4. adaptation for a specific application, not included in user's manual

5. knocks, falls or prolonged immersion.

Return your instrument to your distributor for any work to be done within or outside of the guarantee.

1.4 Unpacking - Repacking

The equipment underwent thorough mechanical and electronic testing before shipment. All necessary precautions were taken to ensure that you receive the instrument in good condition. We recommend you check the equipment quickly on delivery to detect any damage that may have occurred during transport. If there is any damage, inform the carrier immediately. If you ship this instrument on elsewhere, it is preferable to use the original packaging and indicate the reasons for reshipment as clearly as possible in a note enclosed with the equipment.Chapter II 22 DMM230

2. GENERAL INSTRUCTIONS

2.1 Controls and Terminals

9. HOLD and Backlight key

Tilt stand and battery compartment are on rear of unit.

2.2 Symbols and Abbreviations

Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with great care.

1. Always turn the function switch to the OFF position when the

multimeter is not in use.

2. If “OL” appears on screen during a measurement, the value

exceeds the range you have selected. Choose a higher range.

3.1 DC voltage measurements

Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Voltage surges may occur and damage the multimeter.

1. Set the function switch to the VDC position.

2. Insert the black test lead banana plug into the

negative COM terminal. Insert the red test lead banana plug into the positive + terminal.

3. Apply the test probes to the points of the circuit

4. The voltage measured is displayed on screen.

3.2 AC voltage measurements (frequency, duty cycle)

Risk of Electrocution. The test probes may not be long enough to reach the live parts in certain sockets whose contacts are recessed too deeply. As a result, the reading may show 0 volts when the wall socket is live. Make sure the test probes are touching the live parts before assuming that no voltage is present. Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Voltage surges may occur that can damage the multimeter.Chapter II 24 DMM230

1. Set the function switch to the VAC/Hz/% position.

2. Insert the black test lead banana plug into the negative COM

terminal. Insert red test lead banana plug into the positive + terminal.

3. Apply the test probes to the points of the circuits

4. Voltage measured is displayed on screen.

5. Press the Hz% key to display “Hz”.

6. Frequency measured is displayed on screen.

7. Press the Hz% key again to display “%”.

8. Duty cycle is displayed in percentage.

3.3 DC current measurements

Do not make 20 A current measurements for longer than 30 s. Exceeding 30 seconds may cause damage to the multimeter and/or the test leads.

1. Insert the black test lead banana plug into the

set the function switch to the µA position and insert the red test lead banana plug into the µA/mA terminal.

3. For current measurements up to 600mA DC,

set the function switch to the mA position and insert the red test lead banana plug into the µA/mA terminal.

4. For current measurements up to 20A DC, set

the function switch to the 10A position and insert the red test lead banana plug into the 10A terminal.

5. Press the MODE key to display “DC” on screen.

6. Remove power from the circuit to be tested, then open the circuit

at the point where you wish to measure the current.

7. Apply test probes to the points of the circuit to be tested.

8. Apply power to the circuit.

9. Current measured is displayed on screen.Chapter II

3.4 Temperature measurements

2. Insert probe connector banana plugs into

the negative COM and positive Temp terminals in keeping with polarity.

3. Press the MODE key to indicate ºF or ºC

4. Touch the Temperature Probe head to the

part whose temperature you wish to measure.

5. The temperature measured is displayed.

The temperature probe is fitted with a type K mini connector. A mini connector to banana plug adaptor is supplied for connection to the terminals.

3.5 Capacity measurements

To avoid any risk of deterioration, turn off the circuit to be tested and unload capacitors before making capacity measurements.

2. Insert the black test lead banana plug into the

negative COM terminal. Insert the red test lead banana plug into the positive + terminal.

3. Press the MODE key to display “nF” on screen.

4. Apply test probes to the tips of the capacitor to

5. The measurement may take up to 3 minutes or

more for large capacitors, due to load time.

6. Wait until the displayed measurement settles

before ending the test.

7. The capacity value is displayed on screen.

3.6 AC current measurements (frequency, duty cycle)

Do not make 20 A current measurements for longer than 30 s. Exceeding 30 seconds may cause damage to the multimeter and/or the test leads.Chapter II 26 DMM230

1. Insert the black test lead banana plug into the

negative COM terminal.

2. For current measurements up to 6000µA AC, set

the function switch to the µA position and insert the red test lead banana plug into the µA/mA terminal.

3. For current measurements up to 600mA AC, set

the function switch to the mA position and insert the red test lead banana plug into the µA/mA terminal.

4. For current measurements up to 20A AC, set the

function switch to the 10A position and insert the red test lead banana plug into the 10A terminal.

5. Press the MODE key to display “AC” on screen.

6. Remove power from the circuit to be tested, then open the circuit

at the point where you wish to measure current.

7. Apply test probes to the points of the circuit to be tested.

8. Apply power to the circuit.

9. Read the current in the display.

10. Press the Hz% key to display “Hz”.

11. Frequency measured is displayed on screen.

12. Press the Hz% key again to display “%”.

13. Duty cycle is displayed in percentage.

14. Press the Hz% key to return to current measurement.

3.7 Resistance measurements

To avoid any risk of deterioration, remove power from the circuit to be tested before making resistance measurements.Chapter II DMM230 27

1. Set the function switch to the Ω position.

2. Insert the black test lead banana plug into the

negative COM terminal.

3. Insert the red test lead banana plug into the

positive + terminal.

4. Press the MODE key to indicate "

5. Apply the test probes to the points of the circuit to

be tested. It is best to disconnect one side of the part to be tested so the rest of the circuit will not interfere with the measurement. The value measured is displayed.

To avoid electric shock, never measure continuity on circuits or wires that have voltage on them.

1. Set the switch to the Ω position.

2. Insert the black lead banana plug into the

negative COM terminal. Insert the red test lead banana plug into the positive + terminal.

3. Press the MODE key to display and

4. Apply test probes to the points of the circuit

5. All resistance higher than 100 Ω will stop the

instrument’s sound alert. If the circuit is open, “OL” is displayed on screen.

The temperature probe is fitted with a type K mini connector. A mini connector to banana connector adaptor is supplied for connection to the input banana terminals.

To avoid any risk of deterioration, remove power from the circuit to be tested before making any diode measurements.

1. Set the function switch to the Ω position.

2. Insert the black test lead banana plug into the

negative COM terminal and the red test lead banana plug into the positive + terminal.

3. Press the MODE key to display and V

on screen.Chapter II 28 DMM230

4. Apply test probes to the terminals of diode to be tested. Direct voltage

is usually expressed by a value between 0.4 and 0.7 V. Reverse voltage is indicated by “OL”. Short-circuit elements display a value close to 0V, open elements “OL” in both polarities.

3.10 Duty cycle/frequency measurements (Electronic)

2. Press the Hz% key to display “Hz” on

3. Insert the black lead banana plug into the

negative COM terminal and the red test lead banana plug into the positive + terminal.

4. Apply test probes to the points of the

circuit to be tested.

5. The frequency measured is displayed on

6. Press the Hz% key again to display “%” on

7. Duty cycle is displayed in percentage.

3.11 Autoranging/Manual selection

When the multimeter is first turned on, it automatically goes into Auto-ranging and this automatically selects the best range for the measurements being made. This is generally the best mode for most measurements. For measurement situations requiring manual selection proceed as follows:

1. Press the RANGE key. The “AUTO” display indicator will turn off.

2. Press the RANGE key several times to scroll through the available

ranges until the one you want is selected.

3. To exit the Manual selection mode and return to Autoranging, press

and hold down the RANGE key for 2 seconds. Manual ranging does not apply to Frequency measurements.

When using the MAX/MIN function in Autoranging mode, the multimeter will “lock” into the range that is displayed on the LCD when MAX/MIN is activated. If a MAX/Min reading exceeds that range, “OL” will be displayed. Select the adequate range before entering MAX/MIN mode.Chapter II DMM230 29

1. Press the MAX/MIN key to activate the MAX/MIN measurement

mode. The display icon "MAX" will appear. The multimeter will display and hold the maximum measurement until another maximum value is reached.

2. Press the MAX/MIN key again to display the "MIN" icon. The

multimeter will display and hold the minimum measurement until another minimum value is reached.

3. To exit MAX/MIN mode, press and hold the MAX/MIN key for 2

Relative mode enables relative measurement results to be obtained in relation to a stored reference value. The displayed value is the difference between the stored reference value and the value measured.

1. Perform the measurement as described in the operating

2. Press the REL key to store the displayed measurement. The "REL"

indicator is displayed.

3. The display will now indicate the difference between the stored

reference value and the value measured.

4. Press the REL key to exit relative mode.

Relative mode does not apply to frequency measurements.

Press the HOLD key for >1 second to turn on or off the backlighting function. The backlighting will automatically turn off after 10 seconds.

The hold function freezes the reading in the display. Press the HOLD key briefly to activate or disable the HOLD function.

The auto off feature will turn the multimeter off after 15 minutes. To disable the auto power off feature, hold down the MODE key when the multimeter is turned on.

3.17 Low battery indication

The icon will appear in the lower left conner of the screen when battery voltage becomes low. Replace the battery when this icon appears.Chapter II 30 DMM230

To avoid electric shocks, disconnect the measurement leads from any source of voltage before opening the instrument or battery compartment. Do not use the instrument when it is open or without locking the battery compartment cover. This multimeter is designed to provide years of reliable service, if the following care instructions are followed:

1. Keep the multimeter dry. If it gets wet, wipe it dry.

2. Use and store the multimeter in normal temperatures. Extreme

temperatures can shorten the life of the electronic parts and distort or melt plastic parts.

3. Handle the multimeter gently and carefully. Dropping it can

damage the electronic parts or the case.

4. Keep the multimeter clean. Wipe the case occasionally with a

damp cloth. DO NOT use chemical substances, cleaning solvents, or detergents.

5. Use only new batteries of the recommended size and type.

Remove the old or used battery so it does not leak and damage the instrument.

3. If the multimeter is to be stored for a long period of time, the

battery should be removed to prevent damage to the unit.

4.1 Battery installation

To avoid electric shocks, disconnect the leads from any source of voltage before removing the battery cover.

1. Turn power off and disconnect the test leads from the multimeter.

2. Open the battery cover on the rear panel by removing the two

screws (B) using a Phillips head screwdriver.

3. Insert the battery into battery holder, observing the correct polarity.

4. Put the battery cover

back in place. Screw back down.

If your multimeter does is not working properly, check the fuses and batteries to make sure that they are still good and that they are properly inserted.Chapter II DMM230 31

4.2 Replacing the fuses

To avoid electric shocks, disconnect the test leads from any source of voltage before removing the battery cover.

1. Disconnect the test leads from the multimeter.

2. Remove the battery cover (two “B” screws) and the battery.

3. Remove the six “A” screws securing the rear cover.

4. Gently remove the old fuse and install the new one.

5. Always use a fuse of the proper size and value (0.8A/1000V fast

blow for the 600mA range [SIBA 70-172-40], 10A/1000V fast blow for the 20A range [SIBA 50-199-06]).

6. Replace and secure the rear cover, battery and battery cover.

5. TECHNICAL FEATURES

Function Range Resolution Accuracy Protection

accuracy from 5 % to 100 % of range

Accuracy is valid from 18

C, RH < 75%.Chapter II 32 DMM230 Function Range Resolution Accuracy Authorized overload protection Resistance

±(2.5%R+3.6°F) (1) (1) : (probe accuracy not included)

Accuracy features consist in two elements: (% reading R): is the accuracy of the measurement circuit (+ digits D): is the accuracy of the analog to digital converterChapter II DMM230 33 Case Double molded, waterproof IP67 Shock resistance (Drop Test) 2 meters Diode Test Test current of 0.9 mA maximum, open circuit voltage 2.8V DC typical Continuity Test Sound alert will stop if the resistance is > 100Ω, test current < 0.35 mA Temperature Sensor Requires type K thermocouple Input Impedance > 10 MΩ V = and V ≈ AC Response True rms ACV Bandwidth 40Hz to 1000Hz Peak Factor ≤ 3 at full scale up to 500V, decreasing linearly to ≤1.5 at 1000V Display 6,000 count backlit LCD with bargraph Overrange indication “OL” is displayed Auto Power Off 15 min, with disable feature Polarity Automatic no indication for positive values, minus (-) sign for negative values Measurement Rate 2 times per second, nominal Low Battery Indication “ ” is displayed if battery voltage drops below operating voltage Battery 1 x 9 V battery (6LF22) Fuses mA, µA ranges; 0.8A/1000V fast ceramic; A range; 10A/1000V fast ceramic Operating Temperature 5°C to 40°C Storage Temperature -20°C to 60°C Operating Humidity linear up to 4°C