TRUPER MUT-105 Digital Multimeter User Manual

TRUPER MUT-105 Digital Multimeter

Product Information

The multimeter is a compact, portable and battery operated device that measures various electrical parameters including AC/DC voltage, AC/DC current, resistance, audible continuity, diode, hFE, frequency, capacitance and temperature. It is a 3-1/2 digit multimeter that counts up to 1 999 with some range functions. The multimeter is designed in accordance with the measuring electronic instruments with surge category (CAT III 600 V, CAT II 1 000 V) and degree of contamination 2. The digital multimeter also features polarity indicator function, data maintenance, range indicator and automatic.

Product Usage Instructions

Before using the multimeter, please ensure that the housing is not damaged or any part of the housing has been removed. Check for cracks or missing plastic and inspect insulation around the connectors.

Check the test probes for damaged insulation or exposed metal. Ensure the test probes have continuity. Do not apply more than the rated voltage as marked in the multimeter between the terminals or between any terminal and ground.

Set the dial to the right position and do not change range during measurements to prevent damaging the multimeter. Use special care when the multimeter is working in an effective voltage above 60 V DC or 30 V RMS in AC because there is danger of electric shock.

Use the terminals, functions and range adequate for the measurements. The multimeter features a digital display with a polarity indicator, over range indicator and low battery indicator. The range selector allows you to select the appropriate range for your measurements.

The operation temperature of the multimeter is between 0°C and 40°C and storing temperature is between -10°C and 50°C. The measurements (H x W x D) are dependent on the model and the weight is also dependent on the model.

INTRODUCTION

• This Instructive provides all the safety information, operation instructions, specifications and maintenance of the multimeter which is compact, portable and battery operated.
• This instrument measures AC / DC voltage measurements, AC / DC current, resistance, audible continuity, diode, hFE, frequency, capacitance and temperature, permanence angle, tachometer.
• It is a 3 -1/2-digit multimeter. It counts up to 1 999 with some range functions.
• It is built with polarity indicator function, data maintenance, range indicator and automatic.
• The digital multimeter design is in agreement with the measuring electronic instruments with surge category (CAT III 600 V, CAT II 1 000 V) and degree of contamination 2.

WARNING!

To prevent a possible electric shock or personal injuries, as well as prevent damaging the multimeter and the equipment to be measured, follow these instructions:

• Before using the multimeter, check the housing. Do not use the multimeter if damaged or part of the housing has been removed. Double check for cracks or missing plastic. Check insulation around the connectors.
• Check the test probes for damaged insulation or exposed metal. Check the test probes continuity.
• Do not apply more that the rated voltage as marked in the multimeter, between the terminals or between any terminal and ground.
• To prevent damaging the multimeter, the dial shall be set in the right position and do not make change range during measurements.
• Use special care when the multimeter is working in an effective voltage above 60 V DC or 30 V RMS in AC because there is danger of electric shock.
• Use the terminals, functions and range adequate for the measurements.
• Do not use or store the multimeter in environments with high temperature, humidity, where there are explosive and flammable products, and strong magnetic fields. The multimeter performance can be deteriorated after getting wet.
• When using the test probes keep your fingers behind the finger guard.
• Disconnect the feed circuit and discharge all the capacitors from the voltage before measuring resistance, continuity, diodes o hFE.
• Replace the battery as soon as the battery indicator shows. When the battery is low, the multimeter may produce false readings, which lead to electric shock and personal injury.
• Remove the connection between the test probes and the circuit being tested. Turn off the multimeter energy before opening the housing.
• When servicing the multimeter, use only spare parts with the same model number or electric specifications.
• To prevent damage or an accident, do not alter willingly the multimeter internal circuit.
• When servicing the multimeter, use a soft cloth and mild detergent to clean its surface. To prevent the multimeter surface to corrode, damage or cause an accident, do not use abrasive substances or solvents.
• The multimeter is adequate for indoors use.
• Turn off the multimeter when not in use and remove the battery when idle for a long period of time. Check the battery frequently. batteries may leak when not used for long periods of time. Replace the battery immediately if leaking. A leaky battery may damage the multimeter.

GENERAL CHARACTERISTICS

cover

ELECTRIC SYMBOLS

PARTS DESCRIPTION

1. LCD
2. Data retention button
3. Indicator light
4. Rotary switch / function switch
5. Inlet connector
6. Sleeve
7. Support
8. Batteries cover

LCD DISPLAY

Work cycle selected
Fahrenheit degrees test selected
Celsius degrees test selected
hFE transistor test selected
Continuity test selected
Diode test selected
Auto range mode selected
Automatic power off mode
Data retention enabled
DC
Negative sign
AC
Low battery: replace immediately
Continuance
Angle symbol

SPECIFICATIONS

One (1) year warranty in accuracy 23 ºC 5 ºC lower than 80% HR.
RMS REAL TECHNICAL EXPLANATION

• To measure the non-sine wave signal, the measure method of the real RMS value is lower than the average value response method.
• The RMS multimeter can measure with Precision the non-sine wave signal but to test the AC voltage or current without the AC signal input, the multimeter shall show a reading between 1 to 50. These deviations in readings are normal.In measuring specific ranges, the multimeter will not be affected to measure the current or voltage Precision. The real RMS requires an input signal to be measured to certain level so that the
  c. a. voltage range and current is specified between 2% and 100 % of the complete scale.

WORK PROPORTION
Work proportion refers to the high level within a period of time. The work cycle proportion of a square wave is 50%, the work proportion is 0,1 justified by the level of 0,1 cycles.
The proportion of duration of positive pulses and the pulse cycle. For example, the pulse width is 1 s, the period of sequence sign of pulses 10 s work cycle 0,1.

MOTOR PERMANENCE ANGLE
Permanence angle is defined as the period of time it takes to make the contacts close the ignition time. The right angle of the ignition coil can be closed in any speed of the motor with maximum savings of energy thus gaining better ignition. A closing that takes too long involves a contact combustion and accelerates damage and if the contact time is too short, causes the reduction of the ignition voltage, so that performance or acceleration variation is reduced. RPM must be reduced after cleaning or changing the ignition time adjustment and before closing the angle and adjustment test.

MOTOR TACHOMETER
The idle speed in an automobile is not a tachometer speed, but a type of work condition known as idle when the motor is idling. When the motor is running, the accelerator pedal is completely relaxed when the motor is idle. The tachometer speed of the motor is known as idle speed. The idle speed of the motor is shown as idle value.La velocidad ralentí del motor se muestra como valor ralentí.

ELECTRIC SPECIFICATIONS

DC VOLTAGE

• Input resistance: 5 MΩ in mV range
• Other ranges: 5 MΩ
• Overload protection: 250 V DC or maximum value of AC in 200 mV range
• Maximum value: 1 000 V DC or AC in other ranges.

AC VOLTAGE REAL RMC

• Input resistance: 10 MΩ
• Overload protection: 1 000 V DC or AC peak value
• Frequency maximum value response: (40 – 1 000) Hz (For standard sine wave and triangular wave)
• Display: Real RMS (only as reference, when over 200 Hz in other waves). In AC range 750 V; AC 380 V can be tested and, 220 V commercial energy. Press the key “HOLD” to show commercial energy frequency.

DC CURRENT

Overload protection: 250 V DC peak value
When using automatic recuperation fuses after eliminating the external fault, the fuse goes back to normal and the multimeter can be used in a normal manner.

• Maximum measurement in voltage drop: 200 mV
• Input maximum current: 20 A (The test time shall be between 10 seconds).
• Frequency response: (40 – 1 000) Hz (for standard sine wave and triangular wave)
• Display: Real RMS (only as reference when is over 200 Hz in other waves)

AC CURRENT

• Overload protection: 250 V RMS When using automatic recuperation fuses after the external fault is eliminated. the fuse turns back to normal and the multimeter can be used normally.
• Maximum measurement in voltage drop: 200 mV
• Input maximum current: 20 A (test time shall be within 10 seconds)
• Frequency response: (40 – 1 000) Hz (for standard sine wave and triangular wave)
• Display: True RMS (only as reference when over 200 Hz in other waves)

RESISTANCE (auto fluctuating)

(1,5% de rdg + 3 dgts)

2 kO| 1 O
20 kO| 10 O
200 kO| 100 O
2 MO| 1 kO
20 MO| 10 kO| (1,5% de rdg + 5 dgts)

• Overload protection: 250 v DC and AC peak value.

NOTE

In 200 Ω range, the test probes shall be set in short circuit to measure the own resistance of the probes and then, this value shall be deducted from the final measurement.

WARNING!

For safety reasons, DO NOT ENTER any voltage in the resistance range.

CAPACITANCE (automatic range)

1 000

| (8% de rdg + 5 dgts)

• Overload protection: 250 V DC and AC peak value

TEMPERATURE

• Overload protection: 250 V DC and AC peak value

DIODE AND CONTINUITY

around 1,5 V DC

| The built-in buzzer will buzz if resistance is lower than 30 O| Open circuit voltage: around 0,5 V DC

• Overload protection: 250 V DC and AC peak value
• For continuity test: When resistance is between 30 Ω and 70 Ω, the buzzer may buzz or not. When resistance is higher than 70 Ω, the buzzer will not buzz.

hFE TRANSISTOR TEST (connect the adapter)

FREQUENCY (automatic range)

• Overload protection: 250 V DC and AC peak value

WORK TEST

• Overload protection: 250 V DC and AC peak value

OPERATION INSTRUCTIONS

VOLTAGE MEASUREMENT

• Insert the black test probe into the “COM” connector, the red one into the “INPUT” connector.
• Set the function switch in an adequate DC power range. Connect the test probes trough the circuit to be tested. Polarity and voltage of the point to which the red test probe is connected is shown in. the LCD.

NOTE

1. If the measured current is unknown beforehand, set the functions switch in the highest range. Then, switch to the adequate range according to the value shown.
2. If the LCD shows “OL”, means it is above range. Switch the functions switch into a higher range.

MEASURING AC CURRENT

• Insert the black test probe into the “COM” connector and the red one into the “INPUT” connector.
• Set the functions switch into the adequate AC current range. Connect the test probes through the circuit being tested.

NOTE

1. If the measured current is unknown beforehand, set the functions switch in the highest range. Then, switch into the adequate range according to the value shown.
2. If the LCD shows “OL”, means it is above range. Switch the functions switch into a higher range.

MEASURING DC CURRENT

• Insert the black test probe into the “COM” connector and the res one into “mA” connector. (Maximum 200 mA) or insert the red one into the “20 A” connector (maximum 20 A).
• Set the function switch into the adequate DC current range. Connect the test probes through the circuit to be measured. The current value and polarity in the point to which the red probe is connected is shown in the LCD.

NOTE

1. If th measured current is unknown beforehand, set the functions switch in the highest range. Then, switch into the adequate range according to the value shown.
2. If the LCD shows “OL”, means it is above range. Switch the functions switch into a higher range.
3. When measuring 20 A. The continuous measurement of high current may heat the circuit, affect precision and damage the multimeter.

MEASURING AC CURRENT

• Insert the black test probe into the “COM” connector and the red one into the “mA” connector (maximum 200 mA), or insert the red test probe into “20 A” connector (maximum 20 A).
• Set the functions switch into the adequate AC current range. Connect the test probes through the circuit being tested.

NOTE

1. If the measured current is unknown beforehand, set the functions switch in the highest range. Then, switch into the adequate range according to the value shown.
2. If the LCD shows “OL”, means it is above range. Switch the functions switch into a higher range.
3. Pay attention when measuring 20 A. The continuous measurement of high current may heat the circuit, affect precision and damage the multimeter.

MEASURING RESISTANCE

• Insert the black test probe into the “COM” connector and the red one into “INPUT” connector.
• Set the functions switch into the adequate resistance range. Connect the test probes through the resistance to be measured.

NOTE

1. If the resistance value measured exceed the maximum value of the selected range, the LCD will show “OL”. Therefore, set the functions switch in a higher range. When resistance is above 1 M Ω, the multimeter will take a few seconds to stabilize. This is normal for high resistance readings.
2. When the input terminal is in the open circuit, it shows overload.
3. When measuring resistance in line, double check the power supply is off and all the capacitors are completely released.

MEASURING CAPACITANCE (automatic range)

• Insert the red test probe into “INPUT” terminal and the black one into the “COM” connector.
• Set the functions connector into 20 mF range. connect the test probes to the capacitor being measured. (NOTA: Polarity of the red test probe is “+”).

NOTE

1. Before measuring, it is possible the LCD display is not showing zero. The residual reading gradually decreases. This can be ignored.
2. When reading a very large capacitance, LCD will show some instability value.

DIODE AND CONTINUITY TEST

• Insert the black test probe into terminal “COM” and the red one into the “INPUT” connector. (NOTE: Polarity of the red test probe is “+”).
• Set the functions switch into “ ” range. Connect the test probes into the diode to be measured. The reading is an approximation to the positive drop of the diode voltage.
• Connect the test probes into two pints in the measured circuit. If the buzzer rings, resistance is lower than 50 ! approximately.

MEASUREMENT OF hFE

• Set the range knob in hFE.
• Verify the transistor type is NPN or PNP. Insert the emitter, base and collector in the adequate connector.

MEASUREMENT OF TEMPERATURE

• Set the functions switch into “ºC / ºF” range.
• Insert the black plug (o “-“) of the type K thermocouple probe into connector “COM” and the red plug (o “+”) into the “INPUT” connector.
• Carefully, touch with one end of the thermocouple probe the object to measure.
• Wait one moment: read the display reading.
• Press the “Select “button to select “ºC” or “ºF “ mode. The “ºC” or “ºF “symbol will show as indicator.

MEASUREMENT OF FREQUENCY AND WORK

• Set the functions switch into the required position of “Hz Duty”.
• Connect the black test probe into “COM” connector and the red one into “INPUT” connector. (Note: Polarity in the red test probe is positive “+”).
• Read the display reading.
• Press “Select” button to select “Hz” or “Duty” mode. The “Hz” or “Duty” symbol will show as an indicator.

NOTE

Do not apply more than 250 V RMS to input. There is a possibility that the voltage indication is higher than 100 V RMS, but the reading might be out of specification.

MEASUREMENT OF THE PERMANENCE ANGLE

• Connect the black test probe into the “COM” connector and the red rest probe into “INPUT” connector.
• Set the dial into the desired “DWELL” range, in accordance with the motor cylinders to be measured.
• Connect the black test probe to the iron bars or battery negative pole, and the red test probe into the distributor terminal in the starting coil.
• Star the motor and set in idle. Read the permanence angle value in the LCD.

MEASUREMENT OF THE TACHOMETER

• Connect the black test probe into the “COM” connector and the red test probe into the “INPUT” connector.
• Set the dial into the desired “TACH x 10” range according to the motor cylinders to measure.
• Connect the black test probe to the iron bars of the battery negative pole, and the red testing probe into the distributor terminal of the starting coil.
• Start the motor. Read the display reading. Divide the reading between the number of cylinders. The result is the turn speed. (tachometer).

AUTOMATIC SHUT OFF AND TURNING ON THE LCD LIGHT

• After being turned on, the LCD shows “APO”, meaning the multimeter in in automatic power off mode. When the multimeter automatically shuts off, press the “HOLD” button to turn it on.
• Press briefly the “HOLD” button to turn off / turn on the “HOLD” function. Press the “HOLD” button longer to turn off / turn on the background light.

FUSE AND BATTERY REPLACEMENT

• If the sign appears in the display, it means replace battery. Remove the screws and open the housing in the back. Replace the low battery and set a new one.
• Using automatic recuperation fuses after eliminating the external fault, returns the fuse to normal and the multimeter can be used normally. There is no need to replace the fuse.
• Range 20 A has a fast fusion 20 A / 250 V fuse. Replace the fuse according to specifications: 20 A; 250 V; FAST; Min; Interrupt Rating 20 000 A; diameter 5 mm x 20 mm
• Use 1,9 V DC, Carbon-Zinc battery (included).

WARNING!

• To prevent false readings which lead to electric shock or personal injuries, replace the battery as soon as the indicator symbol shows.
• To prevent damage and injuries, install only spare fuses with the ampere levels, voltage and interruption specified.

TO OPEN THE BATTERY COVER
To replace the fuse, remove the screw in the support frame. Remove the multimeter from the sleeve. Remove the back cover. Replace the fuse with a new one with the same size. Assemble back the support frame. Reinstall the screws.

Disconnect the test probes before opening the batteries back cover.

1. Changing battery and fuse shall only be carried out after the test probes are disconnected and the device id off.
2. Using the right screwdriver, loosen the screws and remove the lower part of the housing.
3. The multimeter uses a 9 V DC battery. Remove the tips from the battery connector from the terminals in. the new battery. Reinsert the battery in the housing cover. Arrange the new battery tips to avoid getting jammed in the housing bottom.

TO DISPOSE OFF THE ARTICLE

Dear customer:
In the event you wish to dispose of this article, keep in mind that many of the components consist in valuable materials that can be recycled. Please do not throw it away with domestic garbage. Ask the local authority where to recycle.

Warranty

Warranty. Duration: 1 year. Coverage: parts, components and workmanship against manufacturing or operating defects, except if used under conditions other than normal; when it was not operated in accordance with the
instructive; was altered or repaired by personnel not authorized by Truper®.
To make the warranty valid, present the product, stamped policy or invoice or receipt or voucher, in the establishment where you bought it or in Corregidora 35, Centro, Cuauhtémoc, CDMX, 06060, where you can also purchase parts, components, consumables and accessories. It includes the costs of transportation of the product that derive from its fulfillment of its service network. . Phone number 800-018-7873. Made in China. Imported by Truper, S.A. de C.V. Parque Industrial 1, Parque Industrial Jilotepec, Jilotepec, Edo. de Méx. C.P. 54257, Phone number 761 782 9100.

Truper, S.A. de C.V.
www.truper.com

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