GL-CS60B/CS120B
Downhole Broadband Seismometer
Main application fields:
●Three-thirdsUVWsymmetricstructure
●Bandwidthrange:GL-CS60B:0.0167Hz~50Hz; GL-CS120B:0.0083Hz~50Hz;
●Sensitivity:2000Vs/m±1%(differential)
●Measurementrange:±10mm/s
●Horizontalinhibitionratio:<1%
●Lockingandunlockingfunction:automatically open the swing when powerison,and remotely open the lock
OVERVIEW
Description
Beijing Gangzhen Technology Co., Ltd. has independently developed the GL-CS60B/CS120B small-diameter downhole seismometer, measuring 80mm in diameter and 720mm in height. Featuring a three-directional UVW symmetric suspension structure, this device delivers differential output with nominal sensitivity of 2000±20 (Vs/m). The GL- S60B/CS120B seismometer combines wide bandwidth, high sensitivity, and a large dynamic range with a highly stable transfer function. Its scientifically engineered design, equipped with sealing sleeves and bases, ensures precise positioning and reliable performance for downhole broadband seismic monitoring. The built-in calibration coil and circuit enable remote calibration. The device employs a dedicated stainless steel sealing sleeve for exceptional airtightness. Using compass-based positioning and mechanical adjustments, it guarantees accurate installation orientation. Its stainless steel armored cable supports multiple downhole deployments.
Technical Parameter
▲ Hanging structure: three-component UVW symmetric structure
▲Bandwidth: 0.0167Hz/0.0083Hz~50Hz
▲Sensitivity: 2000Vs/m±1% (differential)
▲Maximum output signal: ±20V (differential)
▲Dynamic range:>140dB(0.01Hz~0.05Hz); >160dB (1Hz~10Hz)
▲Noise level: 0.025Hz~10Hz lower than NLNM
▲ Linear distortion/total harmonic distortion:less than-60dB
▲Output impedance: <100Ω
▲Horizontal inhibition ratio: <1%
▲Differential output nominal sensitivity: 2000±20 (Vs/m)
▲Input limit speed (1Hz):>10mm/s
▲Host resonance frequency:>100Hz
▲Power supply voltage: DC power supply +12V (9V~18V)
▲Normal power consumption: 90mA@12V
▲Locking and unlocking function:automatically open the swing when powerison,and open the lock remotely
▲Zero adjustment function:automatic zero adjustment when powerison,remote start zero adjustment
▲Maximum adjustment well deviation: ±5°
▲Environment: temperature: -25℃~60℃; humidity: 98%
▲Size diameter: diameter not more than 75 mm (more than 500 meters 80mm)














