Product uses:
Natural electric field frequency selection method, referred to as frequency selection method. Based on the difference of electrical properties of underground rocks and ores, it is an alternating current exploration method to study the change of underground geoelectricity by measuring several different frequencies of natural magnetotelluric field (frequency is 0.n-30 kHz). The instrument used in this method is called natural electric field frequency selective geophysical detector.
This kind of instrument is mainly used for fast searching and evaluating groundwater sources in cities, mountainous areas and plains (e.g. karst water, bedrock fissure water, Quaternary and Tertiary diving). To solve engineering geological problems, such as finding and determining natural or artificial caves (natural caves, earth caves, ancient tombs, air raid shelters, coal mine goafs, water inrush places of coal mines, etc.); finding faults and fractured zones under overburden; evaluating the stability of building foundation; finding and determining underground buried objects (such as water pipes, gas pipes, cast iron). Or cement pipelines, cables; looking for quartz vein or fractured zone type gold deposits. Practice has proved that remarkable geological effects have been achieved in solving the above geological problems.
This kind of instrument has the following characteristics:
Fast - The instrument is portable, easy to operate, walking sampling, data interpretation can be carried out in the field. It takes only 1-2 days to locate a well or solve other geological problems.
Provision - First of all, equipment and equipment: no power supply equipment and personnel, cost savings. Secondly, the province of employment: only 2 people can complete all the work in the field and indoor.
Good - good geological effect. Due to the use of multi-frequency measurement, a large number of data and abnormal curves are obtained, and the interpretation is compared with each other, which greatly improves the accuracy of interpretation and has a high success rate.
Strong anti-interference ability - even in cities with serious interference, it can work normally and obtain good geological results.
Now, according to the experience of designing and manufacturing instruments for many years and the requirement of extensive users, and in line with the principle of people-oriented science and technology, TX-MPI automatic natural electric field frequency selective geophysical detector is newly designed and introduced. They have essentially improved with the former frequency selective instrument: digital automatic instrument, super anti-interference ability. It can measure up to 30 frequencies. It is simple enough to complete all the measurement operations by pressing a button, and finally display the measurement results by LCD. It can improve the practical functions of proper electrode detection, power supply monitoring and so on.
Product characteristics:
5-inch LCD screen with 240*128 dot matrix
Intelligent Controller Main Frequency 22MHz
High Sensitivity, High Impedance, Differential Input Probe
Three Frequency Beneficiation Technology
50Hz/60Hz filtering technology to eliminate power frequency interference
Up to 10 sets of measurement data are saved, each of which contains up to 16 data sets.
Simple Time Display and Temperature Display
Support for External Serial Port Printers (Special Type)
Built-in 12V/1.2AH battery
Supporting two chargers: AC-DC 12V charger and DC 12V charger for automobile
Product parameters:
Working frequency: (unit Hz C/S)
Three Frequency Measurement: Each measuring point measures the following three frequencies: 25; 67; 170
Multifrequency measurement: When a measuring point is fixed-point measurement, the following 30 frequencies are measured:
20；30；40；50；60；70；80；90；100；110；120；130；140；150；
170；190；210；230；250；300；350；400；460；500；700；900；
1100；1300；1500；2000
Permissible range of frequency selection: center frequency & plusmn; 1%.
Measuring parameters: Electric field components of different frequencies of magnetotelluric field. V s, V s (mV).
Measuring range: 1 uV-250mV, automatic range conversion.
Input impedance: > 10M
Power supply: 12V/1.2AH battery
Work environment: temperature (-10 (-+45 C); relative humidity: <85%.
