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Product introduction
Musktool-ETCR3 660 series DC resistance tester is also known as transformer DC resistance tester, DC low-value resistance tester, ground continuity tester, the instrument adopts microprocessor technology, precise four-wire method test, accurate and reliable. Mainly used to measure transformer winding resistance; grounding conduction resistance; cable wire resistance; contact resistance of switches connectors, and relays; metal riveting resistance; winding resistance of coils, motors, and transformers; connection resistance between metal components; electric welding point resistance ; Battery parallel connection resistance; and wire length measurement and calculation. The instrument shell is made of a waterproof protective box, which is strong, safe and durable for anti-collision, drop-proof and waterproof (protection grade IP65). The instrument is also equipped with a large-capacity rechargeable lithium battery pack, which is especially suitable for use in outdoor construction sites. Widely used in construction quality inspection stations, supervision companies, construction units, lightning protection companies, electric power departments, ship locomotive factories, etc. The instrument has two measurement modes: automatic measurement and manual measurement. In the automatic measurement mode, the instrument automatically selects the range gear and test current. In the manual measurement mode, there are 7 range gear options to meet the requirements of users in different occasions. The instrument has the function of calculating resistance at 75°C temperature conversion, which can be compensated and converted according to the temperature and material of the test product. The instrument also has automatic discharge function, alarm function, clock function, automatic shutdown function and so on |
Features
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Technical parameter
1. Measuring range and accuracy
Measuring range and accuracy
Measuring range
Accuracy
resolution
Maximum test current
10.0uΩ～1000.0uΩ
±0.3%FS
0.1uΩ
10A
1,000mΩ～100,000mΩ
±0.3%FS
10uΩ
10A
10.00mΩ～100.00mΩ
±0.3%FS
10uΩ
5A
100.00mΩ～1000.00mΩ
±0.3%FS
100uΩ
1A
1,000Ω～10,000Ω
±0.3%FS
1mΩ
100mA
10.00Ω～100.00Ω
±0.3%FS
10mΩ
10mA
100.0Ω～1000.0Ω
±0.3%FS
0.1Ω
2mA
1.00kΩ～50.00kΩ
±0.5%FS
0.01kΩ
1mA
Note: The reference condition of the error range in the above table: 25°C±5°C, the maximum error in the working environment is not more than 2 times.
(When the measured resistance exceeds the current gear test range, please change the gear to a suitable range)
2. Technical specifications
power supply
DC 7.4V 5200mAh rechargeable lithium battery, the battery is fully charged at about 8.4V
test method
Precise four-wire method, 2-way A/D simultaneous detection
test mode
automatic / manual
Range
10.0uΩ～50.00KΩ
test current
10A, 5A, 1A, 100mA, 10mA, 2mA, 1mA, automatic
temperature measurement
Range: -55℃～125℃; Accuracy: ±0.5℃
measure time
Sampling AD rate 1 second/time
data storage
600 groups (data will not be lost when power failure or battery replacement)
Alarm settings
Alarm threshold setting range: 1mΩ～2500Ω, 0Ω does not activate the alarm function, and does not activate the alarm function every time it is turned on
Warning
When the test value exceeds the alarm setting value, the buzzer will sound an alarm prompt
test instructions
The blue TESTING light flashes during the test
charging indication
The indicator light on the charger is red when charging, and green when fully charged
data retention
Automatically keep displaying the measured results after each test
Backlight adjustment
Drag the slider to adjust the brightness
clock function
24-hour format, display hours, minutes, seconds
Converted Resistance Calculation
It is converted according to the temperature and material of the tested product.
discharge function
Automatic discharge after test, clear discharge indication, avoid misoperation
Automatic shut-down
Automatic shutdown after 15 minutes of no operation
test line
1 red and black: 5m long; 1 temperature sensor: 1m long; 1 ground wire: 2.5m
display mode
480×854 true color LCD touch screen
display size
62.1mm (W) × 110.4mm (H)
Host size
280mm×260mm×160mm
quality
About 1902g (including battery); total mass: about 4.46kg (including accessories)
overflow display
Over-range overflow function: digital 99999 over-limit display
low voltage indication
When the battery voltage drops to DC 7.2V±0.1V, the battery voltage and power display will be red, reminding the meter to charge in time
Working temperature and humidity
-10℃～40℃; below 80%rh
storage temperature and humidity
-10℃～60℃; below 70%rh
degree of protection
IP65 (when the cover is closed)
USB interface
With USB interface, software monitoring, stored data can be uploaded to the computer
Pressure resistance
AC 3700V/rms (between shell and screw)
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"
