Triplett MM300 Bedienungsanleitung

User Manual

MM300

True RMS Manual Ranging Digital Multimeter

Introduction

Congratulations on your purchase of the Triplett MM300 True RMS Manual Ranging Digital

Multimeter This instrument performs AC/DC voltage, AC/DC Current, Resistance, Audible Continuity,

Diode, Temperature measurements and Frequency measurements, it is a 3 3/4 digits, 3999 counts

Safety

•Circuits under test must be de-energized and isolated before connections are made (except for

voltage measurements).

•Circuit connections must not be touched during a test. Use extreme caution when working near

bare conductors and bus bars. Accidental contact with conductors could result in electrical

shock.

•Use caution when working near voltages above 60VDC or 30VACrms.

•After insulation tests, capacitors must be discharged.

•Test leads (including alligator clips) must be in good working order, clean and without broken

or cracked insulation.

•When servicing, use only specified replacement parts.

International Safety Symbols

Caution, refer to this manual before using this meter

Dangerous Voltages

Meter is protected throughout by double or reinforced insulation

ELECTRICAL SYMBOLS

DC (Direct Current).

AC (Alternating Current).

DC or AC

Important safety information.

Refer to the manual.

Dangerous voltage maybe present.

Earth ground.

Low battery

Fuse.

Diode

Continuity test

°C

Centigrade

°F

Fahrenheit

AUTO

Auto range

Conforms to European Union directive.

Double insulated.

APO

APO auto power off

Battery capacity

▲

Relative test

Data hold

Meter Description

1) Protective Holster

2) LCD Display

3) “Select.” Button

When you measure the current, pressing this button will

switch the meter between DC function and AC function.

When you measure the diode or the continuity, pressing

this button will switch the meter between the diode and

the continuity functions.

4) “ ” Button

After pressing the button, the present reading is held on

the display, meanwhile “ ” is displayed on the LCD

as an indicator. To exit the Hold Mode, press the button

again and the indicator “ ” will disappear.

Press the button for 2 seconds to turn the Backlight ON.

Press again for 2 seconds to turn OFF.

5) Function/Range Rotary Switch

This switch can be used to select desired function and

range.

6) “A” Jack

Plug-in connector for the red test lead for Current

(200mA ~ 10A) measurements.

7) “COM” Jack

Plug-in connector for black (negative) test lead.

8) “INPUT” Jack

Plug-in connector for the red test lead for all measurements except current (≥200mA) measurements

Operation

DC & AC VOLTAGE MEASUREMENT

1. Connect red test lead to “INPUT” jack, Black lead to “COM” jack.

2. Set RANGE switch to desired VOLTAGE range, if the voltage to be measured

is not known beforehand, set switch to the highest range and reduce it until

satisfactory reading is obtained.

3. Connect test leads to device or circuit being measured.

4. Turn on power of the device or circuit being measured voltage value will

appear on Digital Display along with the voltage polarity.

DC/AC CURRENT MEASUREMENT

1. Red lead to “INPUT”. Black lead to “COM” (for measurements between 200mA

and 10A connect red lead to “10A” jack with fully depressed.)

2. Range switch to desired range.The default function of the meter is the

measurement of DCA.

3. Press “select” button to switch to ACA measurement mode.

4. Open the circuit to be measured, and connect test leads in series with the load

in with current is to measure.

5. Read current value on Digital Display.

6. Additionally, “A” function is designed for intermittent use only. Maximum

contact time of the test leads with the circuit is 15 seconds, with a minimum

intermission time of seconds between tests.

RESISTANCE MEASUREMENT

1. Red lead to “INPUT”. Black lead to “COM”.

2. Range switch to desired Ωrange.

3. If the resistance being measured is connected to a circuit, turn off power and

discharge all capacitors before measurement.

4. Connect test leads to circuit being measured.

5. Read resistance value on Digital Display.

DIODE MEASUREMENT

1. Red lead to “INPUT”, Black lead to “COM”.

2. RANGE switch to “ ” range.

3. Connect the red test lead to the anode of the diode to be measured and black

test lead to cathode.

4. The forward voltage drop in mV will be displayed. If the diode is reversed,

figure “OL” will be shown.

TEMPERATURE MEASUREMENT

1. Range switch to ºC or ºF range, it will display room temperature in ºC or ºF

value.

2. Connect the K-type thermoelectric couple to “INPUT” and “COM” jacks.

3. The display will read Temperature value ºC or ºF.

4. Press “select” button, can switch the unit of measurement of temperature. The

default is temperature measurement in Celsius.

NOTE: The K-type thermocouple Max. Operating temperature of Probe:

250˚C/482˚F (300˚C/572˚F short-term). The sensor supplied with the instrument

is an ultra- fast response naked bead thermocouple suitable for many general

purpose applications.

AUDIBLE CONTINUITY TEST

1. Red lead to “INPUT”, Black lead to “COM”.

2. RANGE switch to “ ” range.

3. Connect test leads to two points of circuit to be tested. If the resistance is lower

than 30Ω±20Ω, the buzzer will sound.

BATTERY TEST

1. Connect the black test lead to the "COM" jack and the red test lead to the

"INPUT" jack (Note: The polarity of the red test lead is positive "+").

2. According to the different type of the battery (1.5V, 9V,) to be tested, set the

range switch to the desired BATT range.

3. Connect the test leads to the battery to be tested.

4. Read the reading on the display. The polarity of the red test lead connection

will be indicated.

“ ” FUNCTION

5. After pressingthe button, thepresent reading is held on the display, meanwhile

“ ” is displayed on the LCD as an indicator. To exit the Hold Mode, press

the button again and the indicator “ ” will disappear.

6. Pressing the button more than 2 seconds will turn the Backlight ON and

OFF.

Auto Power Off

If you don’t operate the meter for about 15 minutes, it will range switch or

press a button.

In the power off state, press and “Select” button to Rotary range switch, you

can cancel the auto power off function, “APO” symbol disappear from the

LCD.

Specifications

Accuracies are guaranteed for 1 year, 23ºC±5ºC, less than 80%RH

DC VOLTAGE

RANGE

RESOLUTION

ACCURACY

1mV

±（0.8%of rdg+5D）

20V

10mV

200V

100mV

600V

±（1.0% of rdg+5D）

OVERLOAD PROTECTION: 220V rms AC for 200mV range and 600V DC or

600V rms for all ranges.

AC VOLTAGE

RANGE

RESOLUTION

ACCURACY

200V

100mV

±（1.0% of rdg+5D）

600V

RESPONSE: Average responding, calibrated in rms of a sine wave.

FREQUENCY RANGE: 45Hz ~ 450Hz

OVERLOAD PROTECTION: 600V DC or 600V rms for all ranges.

AUDIBLE CONTINUITY

OVERLOAD PROTECTION: 15 second maxi- mum 220 V rms.

DC CURRENT

RANGE

RESOLUTION

ACCURACY

200mA

100µA

±（1.5% of rdg+4D）

10A

10mA

±（2.0% of

rdg+10D）

OVERLOAD PROTECTION: 500mA/600V fuse or 10A/600V fuse

MEASURING VOLTAGE DROP: 200mV

AC CURRENT

Range

Resolution

Accuracy

200mA

100µA

±(1.5% of rdg + 4D)

10A

10mA

±(2.0% of rdg + 4D)

Overload Protection:

µA and mA ranges: F0.5A/600V fuse

10A ranges: F10A/600V fuse

Max. Input Current:

“INPUT” jack: 200mA

“A” jack: 10A

(For measurements>5A: duration <10 seconds, interval >15 minutes)

Voltage Drop: 200mA 10A ranges: 200mV

Frequency Range: 40Hz ~ 400Hz

Response: Average, calibrated in rms of sine wave

RANGE DESCRIPTION

Built-in buzzer sounds if resistance is

less then 30±20Ω

RESISTANCE

RANGE

RESOLUTION

ACCURACY

200Ω

0.1Ω

±（1.0% of rdg+10D）

2KΩ

1Ω

20KΩ

10Ω

200KΩ

100Ω

2MΩ

1KΩ

OVERLOAD PROTECTION: 15 seconds maxi- mum 220Vrms.

TEMPERATURE (with K-TYPE PROBE)

RANGE

RESOLUTION

ACCURACY

-40℃~150℃

1℃

（1.0%+4D）

150℃~1370℃

（1.5%+15D

）

-40℃~302℃

1℃

（1.0%+4D）

302℃~1999℃

（1.5%+15D

）

BATTERY TEST

BATTERY AND FUSE REPLACEMENT

Fuse rarely need replacement and blow almost always as a result of operator

error.

If “ ” appears in display, it indicates that the battery should be replaced.

To replace battery & Fuse (500mA/600V or 10A/600V) remove the 1 screws in

the bottom of the battery case, simply remove the old, and replace with a new

one. Be careful to observe polarity .Remove the hostel and remove the bottom

cover of the meter to replace the fuse. Please replace the appropriate fuse

according to operation manual.

Range

Resol.

Internal Resistance

10mV

910Ω

1.5V

1mV

150Ω

ACCESSORIES

Operator’s instruction manual

Set of test leads

Gift box

K-type thermoelectric couple

1.5V 3, AAA s

General specifications

Display : LCD, 1999 counts updates 2/sec

LCD Size : 55 x 31mm

Polarity Indication : “-” displayed automatically

Over-range Indication : “OL” displayed

Low Battery Indication : “ ” displayed

Range select : auto or manual

Operation Temperature : 0°C to 40°C, less than 80%RH

Storage Temperature : -10°C to 50°C, less than 85%RH

Battery Type : 1.5V x 3, AAA size

Dimension (H×W×D) : 145×70×35mm

Weight : Approx 157g

Approvals

Warranty Information

Triplett / Jewell Instruments extends the following warranty to the original

purchaser of these goods for use. Triplett warrants to the original purchaser for

use that the products sold by it will be free from defects in workmanship and

material for a period of (1) one year from the date of purchase. This warranty

does not apply to any of our products which have been repaired or altered by

unauthorized persons in any way or purchased from unauthorized distributors so

as, in our sole judgment, to injure their stability or reliability, or which have been

subject to misuse, abuse, misapplication, negligence, accident or which have

had the serial numbers altered, defaced, or removed. Accessories, including

batteries are not covered by this warranty

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