Earthing resistance and soil resistivity meter with hard carrying case and clamps
Multifunctional earthing and soil resistivity meter
The Sonel MRU-200-GPS earth resistance and soil resistivity
meter is a versatile meter for earth resistance and soil
resistivity measurements. The device allows the use of all known
earth resistance measurement methods. This renders it an
unrivalled measuring instrument in its category and definitely
makes it stand out from other devices of its kind. Sonel
MRU-200-GPS allows you to perform tests with the 3-pole and
4-wire method, using additional clamps (multiple earthing), as
well as the two-clamp method and impulse method (earth impedance
measurement).
The application of the two-core measurement method allows, under
certain conditions, to perform earth resistance measurements
without the use of auxiliary probes which are driven into the
ground. The impact method, on the other hand, is used for
diagnosing lightning protection earthing, but can also be used
to measure extensive, multiple and connected earthing (including
underground) without interfering with the circuit. With the use
of the impact method it is possible to carry out measurements in
accordance with EN 62305 - the need to measure earth impedance.
It is worth noting that the instrument also has a built-in GPS
receiver, which allows for recording the result along with the
coordinates of the location. An additional function of the meter
is the possibility of carrying out measurements of soil
resistivity, continuity of protective and equalising connections
and, with the use of clamps, also leakage or fault currents.
The high class of the device is confirmed by
the excellent accuracy of the result it produces. The meter makes
measurements in accordance with the EN 61557 standard starting from
0.100 Ω.
Sonel MRU-200-GPS XL3C3N1 comes with XL-3 hard carrying case, C-3
receiving clamp and N-1 transmitting clamp..
MRU-200-GPS meter
was created for the most difficult working conditions. It
generates
a measuring current exceeding 200 mA, which provides effective
measurements of grounding of energy objects such as transformer
stations and power stations.
Thanks to the methods using clamps, it is not necessary to
disconnect the control connectors, which is sometimes a very
tedious
operation. This plays a special role when performing works on
objects exposed to weather conditions, where the connecting elements
are sometimes corroded or tarnished.
The graphical user interface provides clear readings and explicit
messages. This translates into quick, trouble-free service.
MRU-200-GPS may be used to test earthing of lightning protection systems, as this meter is able to simulate the conditions occurring during a lightning strike – it generates current with a standardized pulse leading edge and a time to half-peak. Available impulse ramps include 4/10 μs, 8/20 μs, 10/350 μs.
ERP-1 adapter allows user to test earthing systems using flexible clamps. This is particularly useful, e.g. in case of lattice towers – there is no need to switch off the line or disconnect control connectors. Proprietary algorithm allows user to check the current direction in the individual measurements and facilitates damage detections, e.g. corroded steel strip (hoop).
The measuring methods available in the device allow for comprehensive control of working and protective grounding. The calibration function of the test leads eliminates the influence of their resistance on the result. However, this is just the beginning.
The results can
be saved to the device's memory. It is divided into 10 banks of
99
cells, each corresponding to one measurement. These results
can be
easily transferred to the Sonel Reader software for archiving
or
subsequent analysis and research.
Bluetooth wireless interface may be used to transfer
measurement
results to PC software or to a mobile phone with dedicated app -
Sonel MRU Mobile. This provides not only data archiving
function,
but further data transfer - directly from the measurement site via
an e-mail.