ELECTRICAL INSTRUMENT ELRECPRO – VIP 3000/10000
1. Functions: Measuring resistivity, induced polarization on land with multichanels and high power for basic geological investigation, mineral investigation and assessment; Engineering geology; Geological hazard.
2. Manufactured by: IRIS INSTRUMENTS – France
3. Year of production: 2008
4. Webiste: hptts:\\www.iris-instruments.com
5. Specifications
5.1.Transmitter VIP 3000
– Output power: 3000w maximum
– Output voltage: 3000 v maximum
– Automatic voltage range sellection
– Output current: 5A maximum, current regulated
– Current accuracy: better than 1%.
-Current stability: 0.1%
– Dipole: 8 selected by push botton.
Time domain mode:
-Waveform: ON+, OFF, ON-, OFF (ON=OFF) preprogrammed cycle.
– Automatic circuit opening in off time.
– Preprogrammed ON times from 0.5 to 8 seconds by factor of two.
Frequency domain mode:
– Waveform: Square wave,
– Preprogrammed frequencies from 0.0625 Hz to 4 Hz by factors of 2.
– Alternate or simultaneous transmission of any two frequencies.
-Time and frequency stability: 0.01%
– Display: Four lines alphanumeric liquid crystal dispaly.
– Simultaneous display of output current, output voltage, contact resistance,input power.
– Protections: Short circuit at 10 ohms,open loop at 60000 ohms, Thermal, input overvoltage and undervoltage.
General features:
– Dimensions (h w d): 41 x 32x 24 cm.
– Weight : 16 kg.
– Opening temperature: -40 to + 50oC.
Power sources:
175 TO 270 VAC, 45-450Hz, single – phase (works at about half power with a 110 V Source).
5.2. Transmitter VIP 10000
– Output power: 10000w maximum
– Output voltage: 3000 v maximum
– Automatic voltage range sellection
– Output current: 20A maximum, current regulated
– Current accuracy: better than 1%.
– Current stability: 0.1%
– Output connector: connectors accept bare wire or plus of up to 4 mm diameter.
Time domain mode:
-Waveform: ON+, OFF, ON-, OFF (ON=OFF) preprogrammed cycle.
– Automatic circuit opening in off time.
– Preprogrammed ON times from 0.5 to 8 seconds by factor of two.
Frequency domain mode:
– Waveform: Square wave,
– Preprogrammed frequencies from 0.0625 Hz to 4 Hz by factors of 2.
– Alternate or simultaneous transmission of any two frequencies.
-Time and frequency stability: 0.01%
– Display: Four lines alphanumeric liquid crystal dispaly.
– Simultaneous display of output current, output voltage, contact resistance,input power.
– Protections: Short circuit at 10 ohms,open loop at 60000 ohms, Thermal, input overvoltage and undervoltage.
– Direct wire sync of on-time and polarity.
Power sources: 175 TO 270 VAC, 45-800Hz, three – phases for maximum power (worked at reduced power with a single phase).
General features::
– Dimensions (h w d): 55 x 51x 37 cm.
– Weight : 35 kg.
– Opening temperature: -40 to + 50oC.
5.3. Receiver Elrec Pro
Pulse duration: 1s, 2s, 4s, or 8s
Channels: 10 true differential inputs
Input Impedance: 100 MOhms
Input Voltage: 15V, automatic gain, input protection 1000V
Resolution / Accuracy: 1 µV / 0.2%
GPS: GPS input for coordinates,and synchronisation
Readings: Resistivity, Self potentiel, Induced polarisation ( Up to 20 windows), Quality control, and optional full waveform
Noise Rejection: power line rejection, SP linear drift correction.
Storage: 44800 readings, up to 8 hours full waveform , stored on solid state memory
Dimensions ( L x W x H) 31x21x21cm Fiber glass casing, weather proof,
Weight: 6.4Kg with internal RX battery
Operating Temp.: -20 to +70°C
6. Some projects used this instrument by Geophysical Division:
– Project: “Geological mapping and mineral investigation at scale 1/50,000 of Tan Bien map sheets group”;
– Project: “Geological mapping and mineral investigation at scale 1/50,000 of Kon PLong map sheets group”.
– Science and technology topic: ”Research on building a process of evaluating the prospect of metal minerals (Iron, lead, copper, zinc …) in depth by a combination of modern geophysical methods. Apply the test on 3 clusters of magnetic and gravity anomalies.
– Project: Overall assessment of lead and zinc resources;
– Project: Detail checking the airborne geophysical anomalous cluster in South To Hap region, Khanh Hoa province.
– Project: Investigate and evaluate the minerals lead, zinc, gold and associated minerals (tin, wolfram) in Vi Xuyen – Bac Quang area, Ha Giang province.
– Project: Investigate and evaluate the minerals lead, zinc, gold and associated minerals (tin, wolfram) in Xin Man – Quang Binh – Bac Ha areas in Ha Giang and Lao Cai provinces.
– Component projects: Mineral geological mapping at the scale of 1: 50,000 of Con Cuong 1 map sheets group; Investigation and assessing gold and minerals associated in the southwestern part of the Red River fault (except Nghe An province); Investigation and evaluating tin – wolfram ores and associated minerals in the southwestern part of the Red River fault; Investigation and assessing copper, nickel and associated minerals in the Northwest region under the Project “General investigation of minerals and completing geological maps at scale 1:50,000 in the Northwest area for planning and sustainable development socio-economic”.
And many other works.
Source: Geophysicam Division./.
