Introducing the products of Golden Rule, a leading mass flow meter company.

수소가스질량유량계 상압 교정영상

KOLAS 기체유량교정

KOLAS 액체유량교정

  • Golden Rule has entered into a technical agreement with KOLAS, so that all products are calibrated by a calibration agency, thus enhancing the reliability of calibration. KOLAS report can be requested upon delivery. In addition, we are also working on a calibration agency for faster work for our customers.

    ※ The mass flowmeter of Golden Rule Co., Ltd. is shipped after testing with a calibration facility built in accordance with the conditions of the certification body.

    Golden Rule Co., Ltd. uses a sonic nozzle to calibrate 0.023 to 360 m3/h for gas flow meters based on KS Q ISO/IEC 17025 of a flow meter accredited calibration institution, and 3.5 to 50 m3/h for liquid flow meters. Calibrate the m3/h range. Unofficially, the aircraft can perform up to 2500 kg/h through the Sonic Nozzle Bank.

  • Gas is a compressible fluid and is affected by temperature changes and pressure loss around the pipe as it flows. Therefore, a mass flow meter should be installed instead of a volume flow meter to ensure stable production process and equipment operation. The flow calibration facility measures the mass flow rate (m) using a sonic nozzle, that is, a nozzle in a critical state, and calibrates the device to be calibrated (DUT) based on this, resulting in a very accurate calibration result. In particular, the reference flowmeter (REF) for gas and liquid has been calibrated with an accuracy of ±0.2% by the Korea Research Institute of Standards and Science, and the reliability is very high.

    Calibration principle of the reference flowmeter and the flowmeter to be calibrated​The flow uncertainty is calculated as the uncertainty of the mass flow rate (δq), which is the same dimension as the flow rate (q), and includes the runoff coefficient, expansion coefficient, density uncertainty, pipe inner diameter uncertainty, and electronic equipment uncertainty. In addition, the flowmeter's repeatability, hysteresis (hysteresis), and precision are expressed as accuracy and expressed as q ± δq.

    Calibration is the act of comparing a reference and a measured value with higher precision to each other easily, and you can only check whether the measuring device you have is accurate through calibration. Privacy Statement|Rejection of unauthorized e-mail collection