Enthalpy Difference Laboratory Calibration Specification

JJF (Mechanical) 1005

Voltage 0.02mV～1000V

Power0.1mW～100kW

Frequency10Hz～20kHz

Platinum Resistance Temperature(-40～300)℃

Pressure(-0.1～100)MPa

Static Pressure Difference(0～1000) Pa

Wind Speed(0.1～30)m/s

Rotational Speed(30～10000) r/min

Atmospheric Pressure（800～1060）hPa

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

Focusing on industrial demands, GRG Metrology has expanded into new infrastructure, digital transformation, and industries related to daily necessities, providing comprehensive one-stop services for the supply chains of 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 forefront of the industry, 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 received nearly 500 industry and social organization accreditations and honors, including 22 high-tech enterprises.