INTRODUCTION
Click to download: MEWOI4700.4700C Specification
Click to download: MEWOI4700.4700C User Manual
Click to download: Selection Map
| MEWOI4700, MEWOI4700C intelligent Equipotential&DC Resistance Tester, also known as DC low resistance tester, DC resistance tester, Ohm meter, micro resistance meter,contact resistance tester etc., adopting four line precision test method, accurate and reliable. It is a special instrument for measuring the quality of equipotential bonding between the metal components of a building (lightning belt, ground beam, structure, protection, floor reinforcement, water pipe, radiator, toilet, door and window, balcony, kitchen and other objects). It can also measure the resistance of the connecting conductors between various electrical equipment and ground grid, It can also measure the contact resistance of circuit breakers, switches and sockets, and various coil resistors, shunt resistors, metal riveting resistors of vehicle and ship aircraft, resistance of welding joints, battery parallel connection resistance, distributor busbar and wire contact resistance, etc. It is widely used in building quality inspection station, supervision company, construction unit, lightning protection company, electric power department, ship locomotive factory, etc. The instrument also has alarm function, clock function, can test wire length, first measure the wire resistance of a standard length, test the resistance of the whole wire, and calculate the length of the wire through the resistance of the two times’ test. MEWOI4700, MEWOI4700C intelligent equipotential tester consists of host, monitoring software, test line, charger, USB communication line and so on. The host has super LCD display, with backlight and bar chart instructions, can store 400 sets data. The monitoring software has the functions of reading, accessing, saving, reporting and printing historical data. |
GENERAL SPECIFICATION
Function | Test of equipotential bonding resistance between functional metal components, low value resistance test, DC resistance test, resistance test of connecting conductor in ground network ground pole, contact resistance, riveting resistance test, wire length test, etc. |
Power Supply | DC 7.4V 2.6Ah rechargeable battery, the full charged battery is about 8.4V. |
Working Current | When the battery is full, the maximum current measured is 4A |
Test Method | Four wires precision method, 2 Road A/D simultaneous detection |
Measurement Range | 0.0001Ω～30.00kΩ(MEWOI4700) |
0.0001Ω～300.0Ω（MEWOI4700C） | |
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 and P2 voltage negative. |
Measurement time | 2 seconds / times |
Data Storage | 400sets(Power off or battery replacement will not lose data) |
Alarm Setting | Alarm threshold setting range: 1-30ohm, 00 ohm does not start alarm function; each boot does not activate alarm function. |
Alarm | When the alarm indicates that the test value exceeds the alarm setting value, the "Du-Du-Du-Du" alarm prompts. |
Testing Indication | Blue TESTING lights flicking during test |
Charging Indication | When charging, the indicator on the charger is bright red, when full turns to bright green. |
Data Hold | Data is hold automatically after each test. |
Test Wires | 2 red and 2 black wires, each 5m |
Backlight | Controllable gray-white screen backlight, suitable for dark place usage. |
Display | 128mm×75mm LCD Display |
Host Dimension | 212mm×175mm×76mm |
Weight | 950g |
Line Voltage | Should avoid line live measurement |
Overflow display | Overflow function: "OL" symbol display |
Low voltage indication | when the battery voltage drops to 6.8V + 0.1V, the low battery voltage symbol is displayed to remind the battery to charge in time. |
Working Temperature & Humidity | -10℃-40℃, below 80%rh |
Storage temperature & humidity | -10℃-60℃, below 70%rh |
Charging Port | Yes |
USB Port | With USB interface, software monitoring, storage data can upload computers, save and print. |
Withstanding Voltage | AC 3700V/rms (Between the shell and the screw) |
Protection Type | IEC61010-1 (CAT Ⅲ 600V、Pollution 2), JJG724-1991, I JJG166-1993, DL/T967-2005 etc |
SELECTION GUIDE
Model | Current Range | Range of Resistance (Ω) | Resolution |
MEWOI4700 | ≥2A | 0.0001Ω～30.00kΩ | 0.0001Ω |
MEWOI4700C | ≥2A | 0.0001Ω～300.0Ω | 0.0001Ω |
MEWOI4600 | ≥1A | 0.0010Ω～40.00Ω | 0.0001Ω |
