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ST4203 DC Resistance Tester

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ST4203 DC Resistance Tester

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Ground Resistance Tester

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Product Description

Temperature Measurement Accuracy

Type	Range	Maximum display	Resolution	Test accuracy
Temp probe	-10.0℃~60.0℃	60.0℃	0.1℃	±1.0℃
Temp probe	-10.0℃~60.0℃	60.0℃	0.2℃	±1.0℃

Resistance Measurement Accuracy

Measuring current	Measuring range	Precision	Resolution
20A	10.0uΩ~1000.0uΩ	±0.2%FS±10dgt	0.1uΩ
20A	1.000mΩ~10.000mΩ	±0.2%FS±10dgt	0.001mΩ
10A	10.00mΩ~100.00mΩ	±0.2%FS±10dgt	0.01mΩ
5A	100.0mΩ~1000.0mΩ	±0.2%FS±10dgt	0.1mΩ
1A	1.000Ω~10.000Ω	±0.2%FS±10dgt	0.001Ω
0.1A	10.00Ω~100.00Ω	±0.2%FS±10dgt	0.01Ω
10mA	100.0Ω~1000.0Ω	±0.2%FS±10dgt	0.1Ω
1mA	1.000KΩ~10.000KΩ	±0.4%FS±30dgt	0.001KΩ
	10.00KΩ~100.00KΩ	±0.4%FS±30dgt	0.01KΩ
	100.0KΩ~1000.0KΩ	±1.5%FS±50dgt	0.1KΩ
Temperature characteristics: plus test accuracy × 0.3/°C within the operating temperature range. (outside 18°C to 28°C) Calculation method: accuracy = (accuracy of current gear) + 0.3×(number of temperature difference)×(accuracy of current gear) Example: use the environment 8°C/20A current file, the accuracy of this file is ±0.2%FS±10dgt Accuracy = (0.2%FS±10dgt) + 0.3×10×(0.2%FS±10dgt) = 0.8%FS±40dgt (Note: 1mA current 1000K gear test accuracy is only valid at 18°C to 28°C) Long-term testing of high-current gears is prone to heating and affecting accuracy. If there is any deviation, you need to wait for a while before testing.

Technical specifications

Function	It is mainly used to measure transformer DC resistance, transformer winding resistance, ground grid connection continuity, cable wire resistance, switch, connector, relay contact resistance, coil, motor, transformer winding resistance and metal riveting resistance, metal components Interconnection resistance test, low value resistance test, contact resistance test, etc.
Sample type	Optional Cu copper, Al aluminum, Fe iron, Au gold, Ag silver material
Resistance Range	10.0uΩ-1000.0KΩ
Resolution	0.1 uΩ
Overflow display	"OL" symbol display when over-range overflow
Detection method	Four-wire test
Test current	20A、10A、5A、1A、0.1A、10mA、1mA
Short circuit current	20A
Temperature check	Yes, external temperature probe, internal temperature sensor, dual sensor design
Temperature conversion	Yes, temperature conversion, can convert 75 ℃ measurement results
Overload protection	Have
Automatic discharge	Have
Power	DC14.6V 12000mAhLarge capacity lithium battery
Charging function	Have
Display mode	5-inch touch screen (854dots×480dots) full-color LCD display
Interactive mode	Touch screen/button
LCD size	Length and width：108 mm×65mm
Meter size	Length width height：277.2mm×227.5mm×153mm
Test line length	5 meters, 1 red and 1 black
Mobile APP	Have, Bluetooth connection
Computer PC	Have, USB cable connection
Data storage	800 Groups
Data review	Data lookup function
Printer	There is a printer embedded in the instrument panel, press the print button to print the test results
Battery voltage	The battery power is displayed in real time, prompting that the battery needs to be charged in time when the voltage is low
Automatic shut-down	Optional off, 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes
Power	Standby: about 4W (30% brightness)
Consumption	Measurement: 100W Max
Quality	Meter: 3.1kg (including battery)
Quality	Test line: 850g
Working temperature and humidity	-10℃～40℃；70%rh following
Storage temperature and humidity	-20℃～60℃；70%rh following
Insulation resistance	More than 10MΩ (500V between the circuit and the shell)
Pressure resistance	AC 3700V/rms (between the circuit and the case)
Suitable for safety regulations	IEC61010-4-3, radio frequency electromagnetic field≤1V/m
Suitable for safety regulations	IEC61010-1, CAT Ⅲ 600V, pollution degree 2, JJG724-1991 "Verification Regulations for DC Digital Ohmmeter", JJG166-1993 "Verification Regulations for DC Resistors", "DL/T967-2005 Loop Resistance Tester and DC Resistance Fast Tester Verification Regulations"

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