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The sensing unit receives a mixed gas flow of two or three gases, measures the concentration of the sampled gas, and transmits an electrical signal to the sensing unit.
The robust structure of the sensor unit can be adapted to most harsh environments. The distance between the sensing unit and the control unit can be up to 1000 feet. It is connected with a multi-core non-shielded cable, which not only improves system flexibility, but also reduces installation costs.
Hydrogen purity instrument installation:
1:Prepare a.Standard gas----for calibration and test gas analyzer A:99.999%H2
B: 99.99% CO2
C: 75.0-76.0% H2/N2
D: Clean and dry air b. Precision multimeter ---- used to check the electrical circuit.
2: sampling point and sampling pipeline connection a. The sampling point of generator hydrogen purity should be taken from the hydrogen outlet of the generator according to the national standard. At the same time, in order to meet the flow requirements of the hydrogen purity analyzer, a sampling line with a cut-off valve should be specially provided. The sampling line and the inlet of the cabinet The connection requires the use of a Φ6mm stainless steel tube that does not require welding, so that even a running unit can be installed.
3: The installation position of the sampling device of the hydrogen purity analyzer should be selected from dry, ventilated, dust-free, no strong magnetic field, waterproof, dustproof, lighting, easy installation and maintenance, and record data, and it is not easily encountered. local.
4: Argon arc welding is required to connect the sampling point to the sampling line and to connect the sampling line and the shutoff valve.
5: It is better to empty the tube and empty the tube. If it is a separate emptying line, the end of the emptying tube exposed outdoors shall be dust-proof and rain-proof (dust cover is provided).
6: The choice of gas sampling point should refer to the connection of the shortest sampling line, taking into account the sampling pipeline's technological requirements and the overall planning and aesthetic needs.
Power on check after installation:
First, check the piping connection. Before the system is connected, close the air inlet valve and check the airtightness of all piping. If there is any leakage, seal it again until no leakage occurs.
How to properly install the hydrogen purity meter
The hydrogen purity meter consists of three basic components: the sensing unit (transmitter), the control unit (receiver) and the power supply. The sensing unit is installed at the sampling site and the digital controller is installed in the non-hazardous area.