Digitek DT-2844R Operation Manual

DT

DTDT

DT----28

2828

284

44

44

44

4R

RR

R

4444000 COUNTS AUTO

000 COUNTS AUTO000 COUNTS AUTO

000 COUNTS AUTO----RANGE

RANGERANGE

RANGE

AC+DC TRUE

AC+DC TRUEAC+DC TRUE

AC+DC TRUE----RMS

RMSRMS

RMS

DIGITAL MULTIMETER

DIGITAL MULTIMETERDIGITAL MULTIMETER

DIGITAL MULTIMETER

OPERATION MANUAL

1

1. ATIONSAFETY INFORM
SAFETY SYMBOLS

Warning! Dangerous Voltage (Risk of electric shock).
Caution! Refer to the user’s manual before using this Meter.

Double Insulation.

Alternating Current (AC).
Direct Current (DC).
Either DC or AC.

Ground (maximum permitted voltage between terminal and ground).

US Safety Standard.

European Safety Standard

The symbol indicating separate collection for electrical and electronic
equipment.

The RESPONSIBLE BODY shall be made aware that, if the instrument

is used in a manner not specified by the manufacturer, the protection
provided by the instrument may be impaired.

The finger or any part of your body shall not be beyond the barrier of

the test probe when measuring.

Individual protective equipment must be used if HAZARDOUS LIVE parts in the

installation where measurement is to be carried out could be ACCESSIBLE.

The following safety information must be observed to insure maximum personal safety during
the operation at this meter.

1.1 Do not operate the meter if the body of meter or the test lead look broken.

1.2 Check the main function dial and make sure it is at the correct position before each

measurement.

1.3 When making current measurements ensure that the circuit not “live” before opening it in
order to connect the test leads.

1.4 Do not perform resistance, capacitance, temperature, diode and continuity test on a live
power system.

1.5 Do not apply voltage between the test terminals and test terminal to ground that exceed
the maximum limit record in this manual.

1.6 Exercise extreme caution when measuring live system with voltage greater than 60V DC
or 30V AC.

1.7 Change the battery when the “

” symbol appears to avoid incorrect data.

1.8 Use the DMM indoor, altitude up to 2000m and temperature 5°C to 40°C.

Maximum relative humidity 80% for temperatures up to 31°C, decreasing linearly to
50% relative humidity at 40°C.

1.9 In locations subject to radio frequency interference, the product may malfunction and it

resets automatically when leaving this environment.

2. SPECIFICATIONS

2.1 GENERAL SPECIFICATIONS

Display: LCD with a max. reading of 4000.
Range control: Auto range & Manual range control

2

Polarity: Automatic negative polarity indication.
Zero adjustment: Automatic.
Overrange indication: The “OL” or “-OL” display.

Low battery indication: Display "

" sign.

Data hold: Display “DH” sign.
Relative measurement: Display “△” sign.
Auto Power Off: Display “APO” sign. When measurement exceeds 10 minutes without

switching mode and pressing key, the meter will switch to standby mode. Press any
key to exit standby mode. When restart the system, press and hold SELECT key to
disable auto power off.

Safety standards: ETL,

EMC/LVD. CAT ⅢⅢⅢⅢ 600V.

The meter is up to the standards of IEC1010 Double Insulation，
Pollution Degree 2, Overvoltage Category Ⅲ.

Operating environment: Temperature 32 to104°F (0°C to 40°C), Humidity ≤ 80% RH.
Storage environment: Temperature -4 to140°F (-20°C to 60°C), Humidity ≤ 90% RH.
Power supply: One standard 9 volt battery (NEDA 1604, IEC 6F22 or equivalent).

Dimension: 165(H) x 83(W) x 36(D) mm
Weight: Approx. 360g (including battery).

2.2 ELECTRICAL SPECIFICATIONS

Accuracies are ± ( % of reading + number in last digit ), at 23 ± 5°C ,≤75% RH.

2.2.1 DC Voltage

Overload protection: 600V DC or AC rms
Impedance: 10MΩ，More than 100MΩ on 400mV range.

2.2.2 AC Voltage (

AC+DC True RMS

)

[1]

Range Accuracy ± ([% of Reading] + [Counts])
DC, 45Hz to 500Hz 500Hz to 1kHz 1kHz to 2kHz

0.4V,4V 1.0%+3 2.0%+3

40V,400V,600V 1.0%+3 2.0%+3
Impedance : 10MΩ. More than 100MΩ on 400mV range.
Overload protect:600V DC or AC RMS.

[1] All ac ranges are specified from 1 % to 100 % of range. Below 5 % of range, add 10 counts. （In
the range 400mV, an additional 2mV.）.
Because inputs below 1 % of range are not specified, it is normal for this and other true-rms meters

to display nonzero readings when the test leads are disconnected from a circuit or are shorted
together. For volts and amps, crest factor of ≤3 at 3000 counts, decreasing linearly to 2 at full scale.
AC volts and AC amps are dc-coupled.
If the measurement of AC voltage contains more than DCV 250V, please choose manual range
600V.

2.2.3 DC Current

Range Accuracy ± ([% of Reading] + [Counts])

0.4V,4V,40V,400V 0.5%+2
600V 0.8%+3

Range Accuracy ± ([% of Reading] + [Counts])
400µA, 4000µA 1.5%+2
40mA, 400mA 1.5%+2
4A,10A

[1]

2.0%+3