Hydrogen flowmeter*

Hydrogen flowmeter*

The alarm signal output of the gas flowmeter can be achieved through CMOS level output or OC gate output. When the output of the former becomes normal and low level, the alarm becomes high level. When the output of the latter becomes disconnected in normal state, the alarm becomes conductive. When the battery is in the undervoltage alarm output and its voltage drops below 3.2V, a corresponding alarm signal will appear; When the upper and lower limits of the operating flow rate alarm are output, it will also send out an alarm signal when the operating flow rate is greater than the upper limit of the alarm flow rate. When the operating flow rate is less than the lower limit of the alarm flow rate, it will also send out an alarm signal.

The RS-485 interface signal of the gas flowmeter adopts the MODBUS protocol mode, which can be directly connected to the upper computer for remote transmission of the temperature, pressure, standard volume flow rate and total amount of the measured medium, as well as the relevant parameters and fault codes of the instrument; When it is used in conjunction with signal acquisition instruments, we need to implement remote data acquisition and monitoring systems through computer networks and networks, and transmit data through networks, so as to read the historical data and fault status of each flowmeter in the network, and be able to remotely set the relevant information of various flowmeters. Thus, it can be combined with PLC \ \ \ RTU to form the required system.

Hydrogen flowmeter*During installation, it is not allowed to directly weld the inlet and outlet flanges, which can effectively avoid burning out its internal parts. In addition, regarding the flow meterflangeThere should also be no protruding connections in the pipeline at the connection point. inIndustrial metrologyIn the installation of the flowmeter, the selection of the working environment should be easy to maintain, avoid strong electromagnetic field interference and mechanical vibration, and the flowmeter is not suitable for installation in frequent flow terminals and situations with strong pulse flowmeters and pressure pulsations. During the outdoor installation of the flow meter, in order to improve its service life, we need to not install corresponding coverings on it to prevent rainwater from entering and direct sunlight exposure.