Prokit's Industries MT-1910 User Manual

3 1/2 Digital Multimeter w/EK-1

MT-1910

User’s Manual

Edition, 2010

Table of Contents

1. Introduction.............................................................1

2. Safety note................................................................1

3. Explanation of controls and indicators..................2

3-1 Meter illustration 3-2. Functional push button 3-3. Display indicators

4. Specification...........................................................4

4-1. General Feature 4-2. Electrical Specification

5. Measurement operation..........................................7

5-1. DC & AC voltage measurement 5-2. Resistance measurement 5-3. Diode/Continuity check 5-4. Capacitance measurement 5-5. Transistor check 5-6. Frequency measurement 5-7. DC/AC mA/10A measurement 5-8. Inductance measurement

5-9. Temperature measurement

6. Maintenance...........................................................11

6-1. Replacing the battery 6-2. Fuse replacement 6-3.Cleaning and Decontamination

1. Introduction

This Meter is a handheld and battery operated Digital Multi Meter (DMM) with multi function which designed to meet IEC-61010-1 CAT III 1000V over voltage category and double insulation. The entire outer surface of the case has been formed with thermo plastic elastomeric, giving the main body, though downsized, high resistance against the shock of a drop. This user’s manual covers information for safety and caution. Please read relevant information carefully and observe all the warnings and note strictly. The DMM is a general measurement tool and widely used in the school, laboratory, factory etc.

2. Safety note

War ning

To avoid possible electric shock or personal injury and to avoid possible damage to the meter or to the equipment under test, adhere to the following rule:

z Do not apply more than the rated voltage of marked on the meter z Do not apply voltage between COM and OHM terminal, in the

resistance measuring state.

z Do not measure current with test lead inserted into voltage or OHM

terminal.

z Do not expose the instrument to the direct sun light, extreme

temperature and humidity or dew full.

z Inspect the test lead for damaged insulation or exposed metal. z Before measuring current, check the Meter’s fuses and turn off power

to the circuit before connecting the meter to the circuit.

z Disconnect circuit power and discharge all high voltage capacitors

before testing continuity, diode, resistance, capacitance or current.

Note: international Electrical Symbol.

Dangerous Voltage

AC(Alternating current）

DC (Direct Current)

Ground

Warni ng see explain in manual

Double insulation

④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪

Rotary Switch (Knob) “V. Ω. Hz” Input terminal “COM” terminal “μA.mA. .Cx.Lx.hFE”℃ Input terminal “10A” input terminal Power switch(ON.OFF) “FUNC” push button “BKLIT” push button

AC or DC

Fuse

3. Explanation of controls and indicators

3-1 Meter illustration

LCD display

①

“MAX” push button

②

“HOLD” push button

③

2 3

3-2. Functional push button

Push button Function

FUNC

HOLD

MAX/MIN

Backlight

ON/OFF Lock type Power Switch.

“FUNC” key is the function select key that acts with trigger. Use the key as switch of DC/AC voltage, DC/AC current, Resistance/Continuity and / .℃℉ Press “HOLD” to enter and exit the hold mode in any mode. That act with trigger. This key is act with trigger. Press this key once, the maximum value is holding (Will displays ‘MAX’ symbol in the LCD). After pressing the key, A/D will keep working and the display value will up dated and kept the maximum value. (The actual gained value is not the peak value.). This key is used to control Backlight and acts as trigger. When press the key, will enable Backlight for 15 sec. Press the key again within 15 sec, Backlight will disable.

3-3. Display indicators

FIG 2 LCD

Number Indicator Meaning

1 2

4 MAX Maximum value 5 HOLD Data hold

7 MKΩ Ω KΩ MΩ is unit of resistance

8 /℃℉

9 µmVA

10 11 Cx Capacitance Indicator

12 Lx Inductance Indicator 13 mH/H Inductance Units 14 nµmF Capacitance Units.

－

DC voltage or current AC voltage or current

Diode

Low battery indicator

The unit of temperature ( : Centigrade; : Fahrenheit)℃℉

uV mV V is unit of voltage uA mA A is unit of current Indicate negative readin

4. Specification

4-1. General Features

● Manual ranging DMM, that full scale is 1999 counts

● Display: 3 1/2 digit LCD display.

● Overload protection: Used the PTC protection circuit for Resistance, Capacitance

and Frequency measurement.

● DATA HOLD function

● MAX value measurement function

● Back Light / Low battery indication

● Auto power off

● Operating temperature & Humidity: 0 ~ 40℃ (32 ~104 ℉) & < 80% RH

● Storage temperature & Humidity: -10 ~ 50℃ (14 ~ 122 ℉) & <70%RH

● Power Supply: 1.5V Battery (AA Type)×4

● Safety Class: IEC-61010-1, 1000V CAT III, 600V CAT Ⅳ, EK-1 safety rating

standard

● Dimension (L×W×H) & Weight: 205 mm×102 mm×58mm, Approx. 390g. Accessory: 1.K-type thermocouple probe x 1pcs, 2. Socket for temperature measurement x 1pcs, Test Lead x 1set, Carrying bag x 1pcs

+ 4 hidden pages