GC-GJL-01 Reinforcement Cage Length Tester can record the horizontal component of the triaxial direction and the total magnetic field intensity of the earth, which is mainly suitable for geophysical engineering prospecting. The basic principle is to record each magnetic field component with the instrument and judge the length of the reinforcement cage according to the anomaly of magnetic field intensity.

Product Performance Parameters

01) Single-shaft range: ±70,000 nT (±0.7Gs);

02) Measurement range of the total field: 0~110000nT (0~1.1Gs);

03) Resolution: 0.1nT;

04) Precision: ＞1nT for single point measurement;

05) Noise level: 100pT

06) Orthogonality: ≤0.1°;

07) Linearity: ≤0.1‰;

08) Temperature drift: ≤10ppm;

09) Probe size: Φ 33 mm x 200 mm;

10) Data memory: ≥500,000;

11) Memory category: SD/U-disc;

12) Communication interface: RS-485;

13) Depth measurement range: 200m

14) Depth resolution: 1cm;

15) Accumulative depth error: ≤10cm;

16) Working mode: upward and downward recording;

17) Visual size: 7 in.;

18) Number of dots: 1024*600;

19) Screen material: TFT;

20) Continuously working time: ≥8h;

21) Standby static current: 1mA;

22) Operating power consumption: 3W;

23) Power-on time of clock: ≥200d;

24) Operating voltage: DC 10.8~12.6V;

25) Operating temperature: -15℃ ~ +50℃;

26) Storage temperature: -20～+65℃;

27) Overall size of the host: 200×140×240mm;

28) Mass of the host: 3.228kg;

29) Mass of the machine: 5.078kg (including the host, probe, encoder, cable, spool, charger, tripod, packing box and other accessories).

30) The portable system can automatically collect and store depth and magnetic field data, and map them on site, with high test efficiency and data playback;

31) It has strong applicability, and is not affected by the groundwater level or limited by the detection sites (e.g. piling formation in special terrains such as hillsides, riversides and rivers);

Reliability Parameters

32) Seismic grade: GJB 150.16;

33) Operating vibration grade: V.H.5;

34) Surge current: ≤1A;

35) Anti-power reverse: power reverse protection;

36) Service life: 100,000 hours;

37) Electromagnetic compatibility: GJB151A, GJB152A;

GC-GJL-01 Reinforcement Cage Length Tester is mainly used to measure the intensity of magnetic fields with components and the depth of probes, etc. It can comprehensively judge the length of each section of reinforcement cage and the total length of the reinforcement cage, etc. according to the anomalies of the horizontal axis magnetic field and the vertical magnetic field components. It is widely used in the quality inspection of the engineering geophysical pile foundation. In addition, it is widely used to detect the depth of steel piles, steel pipe piles, steel sheet piles and wall depth connected with steel plates, detect the embedment length of reinforcement cages in the concrete pouring piles, and detect the length and joint position of the pre-stressed pipe piles.