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Construction requirements for water quality online monitoring station and indoor requirements for monitoring sub-station
2024-10-12
In order to implement the "national key monitoring enterprises pollution source automatic monitoring data validity audit measures" and "national key monitoring enterprises pollution source automatic monitoring equipment supervision and assessment procedures" (Huanfa [9] No. 88) and other relevant provisions, standardize the national key monitoring enterprises pollution source automatic monitoring equipment supervision and assessment of qualified management measures. In order to provide a suitable working environment for the water quality analyzer, according to the requirements of the Technical Specification for Installation of Water Pollution Online Monitoring System (Trial)-HJ/T-7, enterprises are required to set up special water quality online monitoring stations and supporting equipment.
Construction of monitoring sub-station house
The monitoring sub-station house should be built close to the sample source (discharge port or channel) as far as possible to reduce the analysis delay.
The area of monitoring sub-station room should be larger than 20m2. The ground where the instrument is placed shall be paved with floor tiles, which shall be flat and level, corrosion-resistant and vibration-free. The ground of the instrument shall be more than 300mm higher than the ground of the sampling port to ensure that there shall be no protrusion or depression in the middle of the distributed pipeline.
On the wall surface of the monitoring sub-station near the sewer, corresponding holes shall be opened according to the requirements, and the required pipes shall be laid in advance.
At present, the use of many color steel plate room, color steel plate room has the advantages of fast construction speed, low cost, generous appearance, no decoration.
Indoor requirements for monitoring sub-station room
2 Power supply
Single-phase alternating current: power supply voltage: 220V 25% AC, power supply frequency: 50Hz 5%, power supply power: more than 2000w (the power of this equipment does not include water pump is about 350W, the total power of power supply is ≈ the sum of the power of all monitoring equipment + the sum of the power of all external submersible pumps + air conditioning power + at least 20% margin), and should be well grounded. It is equipped with at least 5 three-eye sockets and 2 two-eye sockets, which are fixed at a height of 2.2 meters, or equipped with two multi-function power supply boards, which can be extended to connect water pumps, computers and other electrical equipment.
For areas with unstable voltage and frequent power outages, it is recommended to use a power-matched AC power regulator to protect the instrument.
2 Indoor requirements
Indoor lighting shall be able to shine on the front of the instrument (40W fluorescent lamp);
Dry, ventilated and meet the operating environment temperature of the equipment (air conditioning should be installed to keep the constant temperature at 5-30 ℃), and avoid direct sunlight;
Avoid strong electromagnetic interference;
Avoid strong corrosive gases.
A sink is available for hand washing during maintenance.
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