I hope an expert can explain the components of online analytical instruments
Thread Content
Our company plans to purchase an ammonia analyzer. Since I have no knowledge at all of online analysis instruments, I would appreciate it if experts could explain the components of an ammonia analyzer. Here is a small table I prepared myself; there’s that… It mainly lists the manufacturers and materials specified in the technical agreements. Sequence Number, Part Name or Description: 1 Ammonia analyzer; 2 Light source for ammonia analyzer; 3 Coupled tube valves used in the pretreatment system and analysis cabinets; 4 TUBE pipes; 5 Sample flow meter – metal rotor flow meter; 6 Thermometers and pressure gauges; 7 Automatic drain valve; 8 Cylindrical filter; 9 T-type filter; 10 Instrument air filter; 11 Membrane filter; 12 Electric heating temperature switch for the flow cell; 13 Integrated self-temperature-controlled electric heating cable; 14 Power supply switch; 15 Explosion-proof box; 16 Two-stage electric pressure reducing valve used in the on-site pressure reduction box; 17 Cabinet-type vortex refrigeration system for use in instrument cabinets during summer; 18 Electric heaters for cabinets and pretreatment boxes – explosion-proof, self-temperature-controlled electric heaters; 19 Switching power supply; 20 Explosion-proof sealed cable connectors (GLANDS); 22 Standard gas pressure reducing valve; 23 Standard gas
The technical specifications are written by the supplier; why worry? The agreement states that it must meet the usage requirements, and if it doesn’t, it can be returned
The supplier doesn’t fill it in, so I have to write it myself... If you know, please tell me; if not, it’s fine……
Top tier, is there anyone who isn’t good at saying harsh words? Please explain it to me~!
The technical agreement is reached through negotiation between the supplier and the buyer. If you don’t understand or are not familiar with it, ask someone in the company who has the relevant expertise to handle it. The forum users cannot list such detailed information for you, as the selection of an online analyzer involves choosing the appropriate materials, as well as determining the process conditions (temperature, pressure, corrosivity of the medium, etc.). All these factors influence the choice of specifications and materials. Haiyou’s response isn’t meant as sarcasm; it’s because you yourself don’t understand the requirements and details of the technical agreement. Since it is an agreement, negotiation is required.
The key issue is that our company doesn’t have anyone who understands analytical instruments either... That’s the most tragic part. Discussions between the two parties aren’t working anymore; the only option is for me to propose a technical agreement and have them handle it. (For certain reasons,) it’s simply not possible to discuss such matters. As for confirming the process conditions... actually, I don’t need such detailed information. I just want to know how many components such devices usually have. For example, a double-flange differential pressure transmitter includes: diaphragm, flanges, capillary tube, transmitter... Just listing those components is enough. Since I haven’t been exposed to this before, I don’t quite understand it… The technical agreements we signed in the past were all proposed by us, and then the manufacturer would confirm whether they could carry out the work; if they could, we would sign the agreement, and if not, that’s that. How is negotiation carried out in this case? The current situation is that the supplier refuses to provide it, and the owner doesn’t offer it either; aside from finding a way on our own, I don’t know who else to turn to for negotiations... (The details are too complicated, but my role is only to carry out the tasks.)
Then one has to spend money to find an expert; it’s necessary to hire someone. Sometimes, even by spending money, it’s still possible to get what you want, because skills are not only valuable; sometimes they also represent dignity and attitude. I guess your company operates mainly through business relationships, and it’s possible that the relations with suppliers aren’t very good; well, in that case, there’s not much that can be done.
This of yours is likely an ammonia escape analyzer for exhaust gases; it may also be necessary to specify the sampling probe (such as one with mounting flanges, usually DN65) as well as a list of spare parts. Additionally, you only need to include all the requirements specified in the technical agreement as attachments to the contract, stating that the configuration and quantities shall meet the actual needs; otherwise, they will be provided free of charge and supplemented as necessary. :lol:lol:lol
Yes, it’s related to exhaust emission measurements… The key factors include not only the process conditions but also various constraints imposed by material manufacturers. Currently, there are some issues between the client and the suppliers, which puts us, as integrators, in a difficult position. The client keeps making numerous additional requests after the quotation is submitted, while the suppliers’ quotes are very high compared to the initial ones. Management wants to reduce costs… That’s why this situation has arisen… I don’t know what to do……
Hehe, technology is priceless – then what’s the need for HaiChuan or for communication? It’s better to cherish what one has. Asking a question also involves dignity and attitude; I can only laugh at that… My current company does operate on a business model, but I’m a pure technical specialist who only participates in discussions related to technical issues. You’re really interesting, hehe~~~
It’s really difficult if the owner specifies a particular manufacturer – the prices are high, and the service quality isn’t necessarily good either. Have the manufacturer prepare a detailed configuration list, then check whether their sample matches it, and have the client confirm it – that’s all.