Product Name: Kinds of Geophone Element with or Without Case Model NO.: gp-128 Horizontal Line: 1 Vertical Lines: 1 Accuracy: 1mm Length End/Middle of Exploration Cable: 27.5m/55m Specifications: 408UL/428UL St,408UL/428ulwpsr, 408uls, Aries Other Specifications: 408uls Thransition Zone, Geophone Trademark: genesis Transport Package: Carton Specification: 408uls Thransition Zone, Geophone Origin: China Product Description Features• Tighter specification, lower-distortion, higher-precision geophone• Improved conventional pig tail element structure• Enhanced spurious response over 250Hz• Availability of horizontal element for S-wave and 3-C data acquisition• 3-year non pro-rated warrantyGeophone technical date Type:CD-20DX-4.5HzNatural Frequency(Hz)4.5±10%Coil Resistance( Ω ) 395±5%Open Circuit Damping0.70±10%Open Circuit Sensitivity(v/m/s)23.4±10%Distortion(%)≤0.3Moving Mass(g)11Typical Case To Coil Motion p-p(mm) 1.5Unit Diameter(mm) 25.4Unit Height(mm) 33.5Unit Mass(g)87Operating Temperature-40ºC- +70ºCLimited Warranty Period(Year)3All parameters are specified at22ºC measured at 12 Hz in 0.7in/s peak to peak velocity408WPSR 1. high quality and reliable in low cost 2.application in 2-d & 3-d seismic exploration. 3.suitable for land,transition zone,mar. Gd series vibration sensor. Is my company developed specifically for engineering testing (such as pile and foundation detection ),large mechanical equipment vibration sensor for use. With high protection degree,reasonable damping coefficient,high resolution.suitable for. High resolution measurement,and has the advantages of small volume,light weight,convenient installation and operation. Velocity type transducer(referred to