Daugiafunkcinis skaitmeninis testeris | TRUE RMS LCD 4000 (YT-730894)

YT-730894
TRUE RMS LCD 4000 DIGITAL METER
Brand
Yato
Entity responsible for this product in the EU
TOYA S.A.More
Measurement of alternating voltage
0-600 V a.c.

Measurement of direct voltage
0-600 V d.c.
AC Current
0-10 A
DC Current
0-10 A
Resistance Measurement
0-40 M
Frequency Measurement
0-3 MHz
Continuity Test
0-50 M
Diode Test
yes
TRUE RMS
yes
Data Hold
yes
Non-contact AC Voltage Detection NCV
yes
Dimensions
120x60x30 mm
Material
ABS
Display Type
LCD
LED Backlight
yes
Display Range
4000
Sound Signal
yes
Automatic Measuring Range
yes
Sampling Rate
3 times per second
Automatic Power Off
15 min
Low Battery Indicator
yes
Power Supply
Battery
Battery Type
2x1.5V; AA
Operating temperature range
0~40 C
Relative working humidity Rh
<75 %
Storage temperature
-10 ~ +50 C
Weight
0.115 kg
Application
electrical
Symbol
YT-730894

Universal meter with TRUE RMS function and automatic range for each measurement. Allows to perform basic and advanced measurements of electrical quantities.

The meter has a large backlit LCD display and a fast and precise measurement system. The solid housing is equipped with a red PVC holster, which reduces the risk of damage during a fall and - thanks to its anti-slip structure - slipping out of hands.

Basic measurements:

AC voltage: 0-600 V, TRUE RMS (40-1000 Hz)
DC voltage: D.C. 0-600 V
AC Current: A.C. 0-10 A, TRUE RMS (40-1000 Hz)
DC Current: D.C. 0-10 A
Resistance: 0-40 M
Diode Test: IF 0.3 mA, UR 2.3 V
Continuity Test: 0-50
Additional Measurements:

Frequencies: 0-3 Mhz
Non-Contact AC Voltage Detection: NCV
Accuracy:

Example of determining accuracy for AC voltage measurement. Calculations for the 235 V measurement result:

the YT-730894 meter's measurement accuracy for this range is: (1% + 3), resolution 0.1 V
measurement error calculation formula: (measurement result x 1%) + 3 x resolution
calculations: (235 x 1%) + 3 x 0.1 = 2.35 + 0.3 = 2.65 V
Actual result taking into account the measurement error for the 235 V indication = 235 2.65 V

result taking into account the measurement error for the DC voltage measurement indication: 12 V = 12 0.09 V
result taking into account the measurement error for the AC current measurement indication: 8 A = 8 0.15 A
The table with the resolution and accuracy for a given measurement can be found in the user manual.

Functions:

TRUE RMS - the meter displays the true effective value of the alternating voltage/current. Unlike averaging meters, devices with TRUE RMS display the correct value not only for a sinusoidal waveform, but also for distorted sinusoidal waveforms, e.g. higher harmonics or square or triangular waveforms. A mandatory function wherever there are switching power supplies, motor inverter drives, HVAC installations, etc. in the circuit.
NCV - non-contact detection of alternating voltage by inductive method. The meter detects the presence of voltage in an insulated wire using the NCV sensor on the front of the device
AUTO - automatic adjustment of the measurement range (one measurement is enough), activated by default. In the case of measuring unknown values using a meter with manual range change using the knob, measurements should be performed successively from the largest range to the range giving the most accurate result - otherwise we risk damaging the device.
SEL - change of measurement mode, e.g. from AC to DC voltage measurement
HOLD - saves the currently measured value on the display
Additional information:

LCD display, maximum displayed result: 3999
backlighting
sound signal in the continuity test for resistance below 50
automatic switching of the diode test to the continuity test for circuit resistance below 50 (it is not possible to set the meter only to the diode test)
12 cm long measuring probes
length of the cable with probes: 80 cm
diameter of the cable with insulation: 3 mm
wire insulation: PVC
construction with overload protection
housing made of ABS plastic
automatic shutdown of the meter after 15 minutes of inactivity (this function can be disabled)
built-in LED on the back of the housing to illuminate, e.g. the measurement location
low battery indicator
power supply: 2 x 1.5 V (AA) batteries