MUL-052 - Multimeter Steren - Free user manual and instructions

Product Type	Digital Multimeter
Brand	Steren
Model	MUL-052
Display	LCD, 3½ digits, 1999 counts
Dimensions	155 x 75 x 30 mm
Weight	200 g (including battery)
Power Supply	9V battery (6F22, included)
AC Voltage Range	200 mV to 600 V
DC Voltage Range	200 mV to 600 V
AC Current Range	200 μA to 10 A
DC Current Range	200 μA to 10 A
Resistance Range	200 Ω to 20 MΩ
Capacitance Measurement	2 nF to 20 μF
Frequency Measurement	20 Hz to 200 kHz (via duty cycle)
Diode Test	Yes, forward voltage drop
Continuity Test	Yes, audible beep below 30 Ω
Transistor hFE Test	Yes, for NPN/PNP
Data Hold	Yes
Overvoltage Category	CAT II 600 V
Safety Standards	EN 61010-1, CE
Accessories Included	Test leads, 9V battery, user manual
Cleaning	Wipe with dry cloth; no solvents
Reparability	Basic; battery and fuse replaceable

Frequently Asked Questions - MUL-052 Steren

What type of battery does the Steren MUL-052 multimeter use?

The multimeter uses a standard 9V battery (6F22 type). A new battery is included with the device.

Can I measure AC and DC current with this multimeter?

Yes, the MUL-052 measures both AC and DC current up to 10 A. For currents above 10 A, do not use this meter.

What is the maximum voltage this multimeter can measure?

It can measure DC and AC voltage up to 600 V. Do not exceed this limit to avoid damage or injury.

How do I test continuity with the MUL-052?

Turn the dial to the continuity/beep symbol. Connect the test leads across the circuit. If resistance is below approximately 30 Ω, the meter will beep.

Is the Steren MUL-052 suitable for automotive diagnostics?

Yes, it can measure voltage, resistance, and current in automotive circuits, but be aware it is not CAT III rated for high-energy systems.

What does the hFE function do?

The hFE function allows you to test the DC current gain of NPN and PNP transistors. Insert the transistor into the dedicated socket with correct pinout.

How do I replace the fuse in the MUL-052?

Open the battery compartment cover; the fuse is located near the battery. Replace with the same type (usually a 500 mA/600 V fuse). Refer to the manual for exact specifications.

Can I measure capacitance with this multimeter?

Yes, the MUL-052 measures capacitance from 2 nF to 20 μF. Use the dedicated capacitance mode and allow a few seconds for reading.

Is the display backlit?

No, the MUL-052 does not have a backlight. Use it in well-lit conditions.

What safety precautions should I take when using this multimeter?

Always start with the highest range, never measure voltage on a current range, use proper probes for the application, and do not exceed the rated voltage. Read the manual for full safety instructions.

USER MANUAL MUL-052 Steren

Technician in blue hard hat and gloves working on server rack with multimeter (no visible text or symbols)

Modelo: MUL-052

Pure electrical circuit symbol for a diode (no text or labels)

Red rectangular button with two black arrows pointing upward and downward, no text or symbols present

STEREN PRODUCTO EMPACADO S.A. DE C.V.

Autopista México-Querétaro. Km 26.5 Sin número, Nave Industrial 3-A, Col. Lomas de Boulevares, Tlalnepantla de Baz, Estado de México, C.P. 54020, RFC: SPE-941215-H43

STEREN

Technician in blue hard hat and safety gear working on server rack with multimeter (no visible text or symbols)

Part number: MUL-052 Data hold digital multimeter

User's Manual V0309

S2-B

IMPORTANT

Before using your new Data hold digital multimeter, please read the following recommendations.

NEVER apply voltage or current that exceeds the maximum specifications of measurement of the multimeter.

CAUTION when you are working with high voltages.

NO MEASURE voltages higher than 500V

NEVER connect the testing cables to a voltage source, if the switch is in the range of:

Current, Resistance, Test diode. Doing so may damage the meter

ALWAYS discharge the capacitors before measuring.

ALWAYS place the function switch to OFF when you do not use the multimeter.

FEATURES

• Hold button.
  • 3 1/2 digits digital display.
• Polarity indicator
  • Reading from logic signal

CONTROLS

1.- LCD screen.
2.- Off.
3.- Data hold button.
4.- 10A Jack
5.- VΩmA input jack (AC/DC Voltage, resistance, logic signal, continuity, diodes and Current up 200mA)
6.- COM jack
7.- Testing transistors slot.
8.- Selector switch.

ELECTRICAL SPECIFICATIONS

DC Voltage

RangeResolutionAccuracy
200m V 100uV		(+/-)(0,5% of reading + 2 digits)
2V 1m V
20V 10m V
200V 100m V
500V 1V		(+/-)(0,8% of reading + 2 digits)

Overload protection: At 200mV range, it's protected at 230V(AC/DC current) Others are protected at 500V (AC or DC)

Input impedance: 10 Mohms for all ranges.

AC Voltage

Range	ResolutionA	ccuracy
200V 100	mV	(+/-)(1,2% of reading + 10 digits)
500V	1 V

Overload protection: At 200mV range, it's protected at 230V(AC/DC current) Others are protected at 500V (AC or DC)

Input impedance: 5 Mohms on all ranges.

Frequency range: 40Hz to 400Hz

DC Current

RangeResolutionAccuracy
2mA 1uA		(+/-)(1% of reading + 2 digits)
20mA 10uA
200mA 100uA
2A 1m	A	(+/-)(1,2% of reading + 2 digits)
10A 10m	A	(+/-)(2.0% of reading + 5 digits)

Overload protection: 315mA/250V fuse (10A unfused)

Maximum input current: 10A (10A up to 15 seconds)

Measuring voltage drop: 200mV

Resistance

RangeResolutionAccuracy
200Ω	0.1Ω	(+/-)(0,8% of reading + 5 digits)
2kΩ	1Ω	(+/-)(0,8% of reading + 2 digits)
20kΩ	10Ω
200kΩ	100Ω
2MΩ	1kΩ
20MΩ	10kΩ	(+/-)(1,0% of reading + 5 digits)

Overload protection: All ranges are 230V (DC/AC current)

INSTRUCTIONS

MEASURING DC / AC

1.- Connect the red testing point to the jack signaled "VΩmA" and the black testing point to the jack signaled "COM".
2.- Set the dial to the V ---/V\~ setting

When the value to be measured is unknown, set the dial to the maximum setting. Reduce level by level until reaching the desired one.

3.- Connect the testing points to the equipment to be measured.
4.- Turn the equipment to be measured on, the voltage will appear on the LCD display. The polarity will also appear. If you want to hold the value, press the hold button

ENGLISH-06

MEASURING DC AMPS

1.- Connect the red testing point to the jack signaled “VΩmA”, and the black testing point to the jack signaled “COM”. When measuring up to 200 mA connect the red testing point to the jack signaled “10ADC” when measuring up to 10A.

2.- Set the dial to the A --- setting

3.- Open the circuit and connect the testing points (in serial) to the equipment to be measured.

4.- Read the value in the LCD display.

ENGLISH-07

MEASURING RESISTANCE

1.- Connect the red testing point to the jack signaled "VΩmA" and the black testing point to the jack signaled "COM".

2.- Set the dial to Ohms (Ω) range.

1. If the measured resistance is connected to a circuit, turn it off and discharge the capacitors before to measure.

4.- Connect the testing points to the resistance to be measured.

5.- The resistance value will appear on the LCD display.

MEASURING DIODES

1.- Connect the red testing point in the jack signaled “VΩmA” and the black testing point in the jack signaled “COM”.

2.- Set the dial to the range.

3.- Connect the red testing point to the diode to be measured and the black testing point to the cathode.

4.- The voltage will appear on the LCD screen in m Volts.

MEASURING TRANSISTORS -hFE-

1.- Set the dial to the hFE range.

2.- Determine if the transistor is NPN or PNP and localize the emitter, base, and collector.

If you don't know the configuration of the transistor, insert it in hFE jack to show data in the screen, the displayed data is the hFE of the transistor and in that position will be the configuration from the transistor.

3.- The multimeter will show the approximate hFE value with base current condition of 10 uA and VCE 2.8 V.

MEASURING AUDIBLE CONTINUITY

1.- Connect the red testing point in the jack signaled "VΩmA" and the black testing point in the jack signaled "COM".
2.- Set the dial to the “)))” range.
3.- Connect the testing points on the circuit to be measured. If the resistance is less than 30Ohms the multimeter will beep.

BATTERY REPLACEMENT

1.- Unscrew the battery compartment's cover and remove.

Red rectangular button with two black arrows pointing upward and downward, no text or symbols present.

2.- Insert a 9V --- battery, pay attention to polarity

3.- Place again the cover and screw.

ENGLISH-10

SPECIFICATIONS

Input: 9V --- (1 battery)

Resistance: 200 to 20Mohms +/- 0,8% accuracy

DC voltage: 200mV to 500V +/- 0,5% accuracy

AC voltage: 200 to 500V +/- 1,2% accuracy

DC current: 2mA to 10A +/- 1% accuracy

LCD screen: 3 1/2 digits, with polarity indicator.

Operating temperature: 0 to 50°C

Relative humidity < 75%

Product design and specifications are subject to change, without notice.

WARRANTY

This Steren product is warranted under normal usage against defects in workmanship and materials to the original purchaser for one year from the date of purchase.

CONDITIONS

1.- This warranty card with all the required information, invoice or purchase ticket, product box or package, and product, must be presented when warranty service is required.
2.- If the product stills on the warranty time, the company will repair it free of charge.
3.- The repairing time will not exceed 30 natural days, from the day the claim was received.
4.- Steren sell parts, components, consumables and accessories to customer, as well as

warranty service, at any of the addresses mentioned later.

THIS WARRANTY IS VOID IN THE NEXT CASES:

If the product has been damaged by an accident, acts of God, mishandling, leaky batteries, failure to follow enclosed instructions, improper repair by unauthorized personnel, improper safe keeping, among others.

a) The consumer can also claim the warranty service in the purchase establishment.
b) If you lose the warranty card, we can reissue it, if you show the invoice or purchase ticket.