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ST4203 DC Resistance Tester

Model:

ST4203 DC Resistance Tester

Category:

Ground Resistance Tester


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
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)
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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