ONE ETCR3700C Intelligent Equipotential Bonding Resistance Tester

Description

ONE ETCR3700C Intelligent Equipotential Bonding Resistance Tester
ETCR3700C  Milliohm Meter ,adopt  precise 4-wire method to  measure,measurement more accurate?It is a special instrument for detecting the quality of equipotential bonding between metal components in buildings (lightning protection belts, ground beams, structures, protection, floor ribs, water pipes, radiators, bathrooms, windows and doors, balcony, kitchen, etc.), and can also measure The resistance of the connecting conductor between various electrical equipment and the ground of the ground network can also measure the contact resistance of circuit breakers, switches, and socket contacts, as well as various coil resistances, shunt resistances, metal riveting resistance of cars, ships, and aircraft, and electrical welding points. Resistance, battery parallel connection resistance, distribution board busbar and wire contact resistance, etc.The instrument case adopts a waterproof protection box, which is crash-proof, drop-proof and waterproof (protection grade IP65).
The meter also has an alarm function, a clock function, and a function to test the length of the wire. First, measure the resistance of a standard length of wire, then test the resistance of the entire wire, and then calculate the length of the wire by measuring the resistance twice. The host's large LCD display with backlight and bar graph indication is clear at the same time, and it can store 400 sets of data at the same time. The monitoring software has functions such as reading, viewing, saving, reporting, and printing of historical data.
Range And Accuracy
Accuracy Class
Range
Accuracy
Resolution
0.3Ω Class
0.0001Ω~0.3000Ω
±1%rdg±10dgt
0.0001Ω
3Ω Class
0.300Ω~3.000Ω
±1%rdg±5dgt
0.001Ω
30Ω Class
3.000Ω~30.00Ω
0.01Ω
300Ω Class
30.0Ω~300.0Ω
0.1Ω
3kΩ Class
300Ω~3000Ω
1Ω
30kΩ Class
3.00kΩ~30.00kΩ
0.01kΩ
(Note: When the measured resistance exceeds the current range test range, please change the range to a suitable range)
Technical Specification
Function
Description
Function
Between metal components of equipotential connection resistance test, low value resistance test, DC resistance test,metal conductor connecting resistance test between earth poles of ground grid , contact resistance test, riveting resistance test, wire length test, etc.
Power Supply
DC 7.4V 2.6Ah, rechargeable lithium battery, full charge about 8.4V
Max Test Current
≥2A
Detection Mode
Precision 4-wire method, two channel A/D simultaneous detection
Range
0.0001Ω~30.00kΩ
0.0001Ω~300.0Ω(Only ETCR3700B type)
Wire length Test
L: ≤999999m
Standard Wire Length
Standard wire length setting range:1m~30m
Test Interface
C1 current positive, C2 current negative, P1 voltage positive, P2 voltage negative
Measurement Time
2 second/times
Data Storage
400 groups (Power down or replace battery will not lose the data)
Alarm Setting
Alarm critical value setting range; 1Ω~30Ω, 00Ω will not start the alarm function. Will not start the alarm function in start up every time
Alarm Function
Measure value exceed alarm setting value, will "Toot-toot-toot" alarm indication
Test Instructions
Blue TESTING light flashes during test
Charge Indication
In charging, the charger indicator lamp light on red, full charge light on green
Data Hold
The test result is kept to display automatically after each test
Clock Function
With 24-hour time system, display hour, minute
Test Wire
4PCS: red and black each for 2PCS, each wire length 5M
Backlight Function
Yes, suitable for the dim place
Display Mode
LCD: 128mm×75mm
Host Size
280mm×260mm×160mm
Weight
2270g
Line Voltage
Line live measurement should be avoided
Overflow Indication
Exceed measure range overflow function: “OL” symbol display
Low Voltage Indication
When battery voltage is lower than DC 7.2V±0.1V, low battery voltage symbol will display and remind to replace battery.
Working Temperature and Humidity
-10oC~40oC, below 80%rh
Storage Temperature andHumidity
-10oC~60oC, below 70%rh
Levels Of Protection
IP65(Close the cover)
Charging Interface
Yes
USB Interface
With USB interface, software monitoring, storage data can be uploaded to computer, save and print.
Withstand Voltage
AC 3700V/rms
Suitable Safety Standard
IEC61010-1⟨CAT III600V, Polluted Gradation⟩
JJG724-1991⟨Verification regulation for DC digital ohmmeter⟩
JJG166-19939⟨DC resistor verification regulation⟩
DL/T967-2005⟨Verification regulation of circuit resistance tester and DC resistance fast tester⟩
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