The invention discloses a deviation detection system and method for a gas calibrator. The system comprises calibrators, a flowmeter, an industrial control computer and a multi-serial port communication card, wherein there are a plurality of calibrators; a gas inlet of each calibrator is communicated with a zero gas source, and a gas outlet of each calibrator is communicated with a gas inlet of theflowmeter; there is an electromagnetic valve at the gas inlet of each calibrator; a communication interface of the industrial control computer is connected with a bus interface of the multi-serial port communication card, and multiple ports of the multi-serial port communication card are electrically connected with the flowmeter, a digital quantity collector and the plurality of calibrators respectively; multiple output interfaces of the digital quantity collector are electrically connected with the plurality of electromagnetic valves; the calibrators are used for controlling and collecting the flow in pipelines; the industrial control computer controls the calibrators and the electromagnetic valves and collects flow values detected by the calibrators and the flowmeter; and only one electromagnetic valve is in an open state at most at the same moment. The detection efficiency can be improved by adopting the system and method disclosed by the invention.

Deviation detection system and method for gas calibrator

The invention discloses a device for calibrating an LNG adding machine calibrating device with the mass method. The device is characterized by comprising the LNG adding machine calibrating device. A liquid-phase inlet and a gas-phase inlet of the LNG adding machine calibrating device are connected with water sources respectively through pipes, a liquid-phase outlet and a gas-phase outlet of the LNG adding machine calibrating device are connected with corresponding containers through pipes respectively, the containers are placed on electronic balances respectively, the liquid-phase inlet is connected with the liquid-phase outlet through a liquid-phase flow meter, and the gas-phase inlet is connected with the gas-phase outlet through a gas-phase flow meter. The invention further discloses a testing method. According to the device and method, on the premise that the LNG adding machine calibrating device is not disassembled, and the flow meters are used, the LNG adding machine calibrating device can be calibrated.

Device and method for calibrating LNG adding machine calibrating device with mass method

The utility model discloses a device for demarcating an LNG (liquefied natural gas) dispenser calibrating device by a quality method. The device comprises an LNG dispenser calibrating device, wherein a liquid phase inlet and a gas phase inlet of the LNG dispenser calibrating device are respectively connected with a water source via pipelines, a liquid phase outlet and a gas phase outlet of the LNG dispenser calibrating device are respectively connected with corresponding containers via the pipelines, the containers are respectively placed on electronic balances, the liquid phase inlet and the liquid phase outlet are connected via a liquid phase flow meter, and the gas phase inlet and the gas phase outlet are connected via a gas phase flow meter. The utility model further discloses a test method. Through the adoption of the device, on the premise that the LNG dispenser calibrating device and the used flow meters are not disassembled, the LNG dispenser calibrating device can be demarcated. Through the adoption of the device, on the premise that the LNG dispenser calibrating device and the used flow meters are not disassembled, the LNG dispenser calibrating device can be demarcated.

Device for demarcating LNG (liquefied natural gas) dispenser calibrating device by quality method

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Device for demarcating LNG (liquefied natural gas) dispenser calibrating device by quality method

Device and method for calibrating LNG adding machine calibrating device with mass method