What adjustments are needed after the instruments arrive at the construction site?
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What tasks need to be carried out on the instruments purchased once they arrive at the site? 1. Which tables need to be recalibrated? Or which quality inspection department should be notified for approval? I only know that safety valves have this requirement. 2. Are all temperature, pressure, level, and flow meters, as well as pneumatic control valves and pneumatic shut-off valves, pre-adjusted by the manufacturer? If there is no need to change any parameters, can they be used right away after being powered on without any adjustments? I mainly want to know what tasks need to be carried out once the instruments arrive at the construction site. Thank you all! !
It is specified in your contract. If not specified in the contract, handle it flexibly. 1. If the users are very skilled, just greet them properly and ask them to handle it. There’s even no need to go to the site. 2. If the user is unwilling to take over for any reason, you still need to go to the site to handle it; if you can’t resolve it, you have to turn to the original manufacturer. 3. Some original manufacturers do not allow third parties to handle it, so it is best to make a reservation in advance. 4. Instrument calibration is a complex task that depends on factors such as the quantity and type of instruments purchased, the characteristics of the users, the manufacturing process, and the installation methods; it’s difficult to explain clearly in just one or two sentences. Even if it is clearly explained that you personally have no accumulation, it is still not easy to understand. 5. All instruments, whether imported or domestically produced, and regardless of any guarantees provided, must in principle be inspected, tested, and calibrated before being put into operation. Even if you do that, it won’t necessarily work properly. Some issues are not related to the instruments themselves; they stem from problems such as installation, manufacturing defects, or improper selection of equipment. It’s important to be aware of these issues in advance, otherwise you won’t know which problems are unfounded. The richer your knowledge structure, the better. It’s best to understand the equipment, processes, installation, etc.
Hello, moderator. I would like to know whether pressure transmitters, mass flow meters, rotameters, thermal mass flow meters, radar level gauges, and temperature transmitters can be used directly after they arrive at the site The range and such are set at the factory according to the requirements of the design institute, right?
All instruments must be calibrated or verified upon arrival
Nothing is certain. Even if the manufacturer guarantees that the configuration has been pre-tested, it still needs to be verified on-site.
In accordance with the requirements of the quality management system, all measuring instruments must be calibrated or verified before use.
Ordinary instruments need to be calibrated by themselves, while measuring instruments and those subject to mandatory calibration must be inspected by authorized metrology departments.
All instruments must be calibrated or verified upon arrival
Agree on how this is determined according to the contract between Party A and Party B
1. Pressure gauges of Class A need to be sent to a calibration institute for mandatory inspection; those of Classes B and C can be calibrated in the factory itself if one has a certification as a calibration technician； 2. Pneumatic control valves and shut-off valves should be pressure-tested before installation to check whether they meet the leakage requirements specified in your order. The liquid level can only be adjusted after installation.