With GPS positioning and timing function, cable-free node system and wireless geophone network. 

 

Application: 

Surveying for shale oil and gas, coal mine goaf, hydraulic fracturing, geothermal resources, CO2 sequestration, ground water resources etc. 

Monitoring for city road ground, Building microtremor, highway, landslide, mud-rock flow, rock burst, Urban blast monitoring, such environmental disaster and geological natural disaster etc. 

 

Function: 

Microtremor could be divided into two types: Natural sources and man-made sources. 

Natural sources of microtremors arise primarily from wind, ocean waves, volcanic activity, tectonic activity, surface rock migration. 

Man-made sources of microtremors primarily arise from means of transportation, machinery, production, and artificial fracturing and blast mining. 

SE3NT Microtremor Monitoring System is specifically developed for the monitoring and testing of various Microtremors, widely used in environmental disaster monitoring, microtremor exploration etc. 

 

Specifications: 

1. Channel NO: 3

2. Frequency Range: 0 - 500 Hz

3. Dynamic Range: 126 dB

4. A/D converter: Δ Σ 24 bit

5. Sampling Interval: 10, 20, 50, 100, 500, 1000 Hz

6. Record Length: > = 1GB/CH

7. Max Input Voltage: 10 V (G=1)

8. Pre-amplifier Gain: G=1, 2, 4, 8, 16, 32, 64

9. Noise: 0.6 UV

10. Input Impedance: 30 kOhm

11. Built-in Core Processor: ARM-9

12. Built-in GPS: Timing error 30 ns, positional accuracy 2.5 m, sensitivity -162 dBm (operable in densely wooded areas)

13. Built-in Wireless Communication: 2.4 GHz, line of sight range 3.2 km, actual range in mountainous terrain 300 m (can select GPRS remote communication). 

14. Memory: 4 - 16 GB SD card

15. Trigger: Event-based, timing-based, or planned (if event-based, can pre-collect 256-1024 sample points)

16. Average Power Consumption: 140 mA operating, 30 mA standby

17. Battery: 7.2V/8.8Ah, 50 hours operating time or 300 hours standby

18. Size: 180 X 180 X 80 mm

19. Weight: 750 g

20. Operating Conditions: -20 to 85 degrees Celsius, rainproof