Calibration Specification for Pile Dynamic Testing Instrument:

Verification Regulation for Pile Dynamic Measuring Instruments JJG 930

Instrument Calibration Parameters:

Acceleration (0.1～200) m/s2    Reference Point(160Hz): U rel =1.2%, Full FrequencyBand (5~2000) Hz: U rel =2.0%

Frequency   2Hz～2kHz

GRG Metrology was established in 2002 and is a leading third-party metrology and testing listed company.

Focusing on industrial needs, GRG Metrology has expanded into new infrastructure, digital transformation, and industries related to daily life, providing one-stop comprehensive services for the supply chain upstream and downstream in strategic sectors such as special equipment, aviation, integrated circuits, low-altitude economy, new energy, 5G communications, intelligent connected vehicles, software and information technology, and life sciences.

GRG Metrology's qualifications are at the industry-leading level, with the total number of CNAS-accredited projects ranking first in the industry for five consecutive years. It has CNAS accreditation for 45,053 parameters, CMA accreditation for 65,113 parameters, and CATL accreditation for 7,922 parameters.

GRG Metrology's headquarters and subsidiaries have obtained nearly 500 industry and social organization authoritative accreditations and honors, including 22 high-tech enterprises.