Memory Earth Resistivity and IP Meter
The MiniSting is a low cost resistivity & IP meter especially designed for small
resistivity jobs like electrical grounding-grid testing, the fall-off-potential method, soil
resistivity test using the Wenner four electrode method, survey for corrosion control, electrical
surveys with the four electrode method (vertical electrical sounding or profiling)
The MiniSting is pre-programmed for Wenner, Schlumberger, dipole-dipole, pole-dipole, pole-pole,
mise-a-la-masse, SP, resistance and azimuthal surveys in the manual measurement mode.
Recorded data is saved in the internal memory and at a convenient time downloaded to a computer
for further processing. Our utility sofware "the Administrator" is included with the MiniSting
as well as a serial download cable. The Administrator software is used for data down-load.
The MiniSting has a built in re-chargeable NiMH battery with power sufficient for one day of
manual surveying. The instrument is delivered with a battery charger.
- Low cost instrument
- Compact size with built in battery
- Rugged construction
- Easy to use menu driven system
- Versatile instrument for different survey configurations
||Apparent resistivity, resistance, voltage (SP), induced polarization (IP), battery voltage
||400 kohms to 0.1 milliohms (resistance)
0-500 V full scale voltage autoranging.
||Max 30 nV, depends on voltage level
||4 digits in engineering notation.
||The user can switch between high and low voltage limit for the transmitter (800 Vp-p or 320 Vp-p
voltage limit). Actual electrode voltage depends on transmitted current and ground resistivity.
|Input gain ranging
||Automatic, always uses full dynamic range of receiver.
||Max 500 V
||Automatic cancellation of SP voltages during resistivity measurement. Constant and linearly varying SP
|Type of IP measurement
||Time domain chargeabilitiy (M), six time slots measured and stored in memory
|IP current transmission
||ON+, OFF, ON-, OFF
|IP cycle times
||1 s, 2 s, 4 s and 8 s
||Running average of measurement displayed after each cycle.
Automatic cycle stops when reading errors fall below user set limit or user set max cycles are done.
||Basic measure time is 1.2, 3.6, 7.2 or 14.4 s as selected
by user via keyboard. autoranging and commutation adds about 1.4 s.
||Continuous averaging after each complete cycle.
Noise errors calculated and displayed as percentage of
reading.Reading displayed as resistance (dV/I) and
apparent resistivity (ohmm). Resistivity is
calculated using user entered electrode distances.
||Better than 100 dB at f>20 Hz
Better than 120 dB at power line frequencies (16 2/3, 20, 50 & 60 Hz)
||Better than 1% of reading in most cases (lab
measurements). Field measurement accuracy depends on
ground noise and resistivity. Instrument will calculate
and display running estimate of measuring accuracy.
||Calibration is done digitally by the microprocessor based on correction values stored in memory.
||Resistance, Schlumberger, Wenner, dipole-dipole, pole-dipole, pole-pole, azimuthal,
mise-a-la-masse, SP (absolute) and SP (gradient).
||Full resolution reading average and error are stored
along with user entered coordinates and time of day for
each measurement. Storage is effected automatically.
||More than 3000 measuring points can be stored in internal memory.
||RS-232C channel included to dump data from instrument to PC on user command.
||20 key tactile, weather proof keyboard with numeric entry keys and function keys.
Measure button, integrated within main keyboard.
LCD night light switch (push to illuminate).
||Alphanumeric LCD display (4 lines x 20 characters) with night light.
||4 banana plug, pole screws for current and potential electrodes. 10-pole KPT
connector for external power, RS-232C and synchronization connections.
||12V, 4.5 Ah NiMH built-in rechargeable battery. External power connector on front
panel, the instrument automatically selects external battery if present.
||Depends on conditions, internal circuitry in auto mode adjusts current to save
energy. At 20 mA output current and 10 kW electrode resistance more than 2000 cycles
are available from a fully charged battery pack.
||Dual stage charger with switchable input (115/230 V AC @ 50/60 cycles)
||6.6 kg (14.5 lb.)
||Width 255 mm (10"), length 255 mm (10") and height 123 mm (5").
(Please contact our sales department for a price quotation on resistivity meters.)
|MiniSting resistivity meter
2015-01-27 15:00:13 EST
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