1. Characteristics
The digital equipotential tester, also known as microohmmeter, ohmmeter, and DC ground resistance tester, uses the latest microprocessor technology and the four-wire method for safe, precise and reliable testing. It is a special instrument for testing the equipotential connection quality between metal components such as equipment shells, lightning protection belts, ground beams, structures, cabinets, steel bars, water pipes, windows, guardrails, radiators, assembly lines and other objects. It can also measure various electrical equipment and ground. The DC resistance of the resistance transformer of the connecting conductor between the grid and ground poles can also be used to measure the contact resistance of switches, socket contacts, coils, metal wires, welding points and other low-value resistances. Widely used in telecommunications, electric power, meteorology, computer rooms, oil fields, power distribution lines, tower transmission lines, gas stations, factory grounding grids, lightning rods, etc. It also has the function of measuring DC voltage and AC voltage.
The digital equipotential tester consists of a host computer, monitoring software, test lines, communication lines, etc. The host's large screen display is clear at a glance. Can store group data. Resistance measurement range: .&;~&; DC voltage range: .~AC voltage range: .~. The monitoring software has online real-time monitoring and historical query functions, dynamic display, alarm value setting and alarm indication functions, and historical data reading, viewing, saving, reporting, printing and other functions.
2. Measuring range and technical specifications
Function: r
Equipotential bonding resistance test between metal components, low value resistance test, resistance test of connecting conductors between ground grids and ground electrodes, contact resistance test, etc.
/> DC resistance range: r
.&;～.&Accuracy&;%r&;
Resistance resolution: r
.&;
Detection method: r
Four-wire method test
Test current: r
&;
Open circuit voltage: r
&;
Power: r
Measurement power&;
DC voltage range: r
.～ Accuracy &;.%r&;
DC voltage resolution: r
.
AC voltage range: r
.～ Accuracy&;.%r&;
AC voltage resolution: r
.
Power supply: r
. Lead-acid battery continuous standby for more than one hour
Backlight: r
/>Controllable gray and white screen backlight suitable for use in dark places
Display mode: r
Extra large display gray and white screen backlight
Measurement indication: r
Flashing indicator countdown display during measurement
Size: r
&;
Instrument size: r
Length, width and height: .&;.&;
Test line length: r
Red and black each
Measurement time: r
Resistance test: about seconds/time; Voltage test: about times/second
B interface: r
B interface software monitoring and storage data can be uploaded to the computer for storage Print
Communication line: r
B communication line
Data storage: r
Group &; storage indication display &; symbol indicates that the storage is full
Data query: r < br/>Data review function: &;R symbol display
Overflow display: r
Over-range overflow function: &; symbol display
Alarm function: r
The measured value exceeds the alarm setting Alarm prompt is issued when the value is set
Battery voltage: r
Battery power is displayed in real time and reminds to charge in time when the battery voltage is low
Automatic shutdown: r
&;Automatically shuts down after a few minutes after turning on the machine
br/>Power consumption:r
Standby (backlight off)
:r
Power on with backlight on
:r
Measurement (backlight off)
Quality: r
Instrument (including battery)
:r
Test line: (including simple test line)
:r
Instrument box:
Working temperature and humidity: r
-℃～℃; below %r
Storage temperature and humidity: r
-℃～℃; below %r
Overload protection: r
Between each port/ Seconds
Insulation resistance: r
&; or above (between the circuit and the casing)
Withstand voltage: r
/r (between the circuit and the casing)
Electromagnetic characteristics :r
Wireless frequency electromagnetic field&;/
Suitable for safety regulations: r
-, III, pollution level, - "Verification Regulations for DC Digital Ohmmeter", - "Verification Regulations for DC Resistors" 》,《/-Calibration Regulations for Loop Resistance Tester and DC Resistance Rapid Tester》
3. Packing list
Instrument: r
Set
Instrument box: r
pieces
Monitoring software CD:r
pieces
B communication lines: r
pieces
Test lines: r
pieces (red and yellow)< br/> Charger: r
Each
Instruction Manual, Warranty Certificate: r
Set
ES3050 digital display equipotential detector