The most common sentence in an order enquiry is "quote for a ZYD-100", and there are also the people who say "the 12000 one". Just what the number in the model stands for in terms of processing capacity is one of the places most easily garbled in passing from one person to another. Keeping the table below at hand saves a good deal of confirming.
The correspondence works within each series
The table below sets the models and the flow rate of the main machines on sale against each other. There is little to explain about the table itself; what matters is the fact it shows. The same suffix number carries a different flow rate in a different series, so a conversion factor carried across series will always be wrong.
| Model | Processing flow | Form of the machine |
|---|---|---|
| ZYD-100 | 6000 L/h | Two-stage vacuum oil purifier |
| ZYD-200 | 12000 L/h | Two-stage vacuum oil purifier |
| ZYD-300 | 18000 L/h | Two-stage vacuum oil purifier |
| TYA-50 | 2000 L/h | Vacuum oil purifier |
| TYA-100 | 4000 L/h | Vacuum oil purifier |
| TYG-100 | 6000 L/h | Mobile vacuum oil purifier |
| LY-200 | 4800 L/h | Plate and frame filter press |
Inside a series, the number and the flow are not the same factor
Within the ZYD series the suffix goes from 100 to 200 and the flow rate goes from 6000 L/h to 12000 L/h, which is a doubling; and on to 300, which corresponds to 18000 L/h. In the TYA series 50 corresponds to 2000 L/h and 100 corresponds to 4000 L/h, so here as well the suffix doubles and the flow doubles with it.
The two series look self-contained when the table is read across, but that is only what reading it across shows. Read the two series down the columns and it becomes clear that the same suffix number stands for a completely different flow: the ZYD-100 is 6000 L/h, the TYA-100 is 4000 L/h, and the TYG-100 is 6000 L/h again. The names are close and the processing capacities are not.
The TYG-100 is also a mobile vacuum oil purifier, which is a different position from the ZYD-100, one of them built to be moved and the other not. A shared suffix is therefore not the same machine.
What to write into the quotation and the contract
A model number written on its own is open to interpretation. The steadier approach is to let the model and the key parameters appear in pairs: the model with the flow rate, the model with the type of oil, the model with the accuracy basis, and to write all of them into the document. This is the same point as before: every place that refers to one machine has to refer to exactly the same machine.
The parameters that belong in the document can be grouped by what they are used for: the flow rate, which is about capacity; the filtration accuracy ≤1 μm, the water content ≤3 ppm (GB/T 7600), the cleanliness NAS 1638 class 5, the breakdown voltage ≥65 kV (GB/T 507) and the gas content ≤0.01% (GB/T 423), which are about quality; and the overall dimensions 1200×1400×1800 mm, the weight approx. 720 kg and the supply of three phase 380V / 50Hz, which are about the installation conditions.
Writing all three groups down has a useful side effect as well: when the machine arrives on site and turns out not to match what was needed, the basis for the judgement is the parameter in black and white, and not anybody's memory of how the discussion went.
How to use this table
- Work from the flow parameter; the model is only a code. In the selection stage, establish the flow rate that is needed first and then find the model that matches it in the table. Working the other way round is where mistakes come from.
- Compare within one series; comparing the numbers across series means nothing.
- Confirm the form as well. The TYG-100 and the ZYD-100 have the same flow but one is mobile and the other is not, and the TYA-50 at 2000 L/h belongs to a different position from the JL series oil filter cart, whose accuracy is stated differently.
- The nameplate is the final reference. When the identity of a machine is checked on site, the model and the parameters on the nameplate are the most direct source.
One point about the flow itself: it is the rated flow rate of the machine, and the level that can actually be held in continuous running depends on the oil, on the filtration accuracy configuration and on the inlet conditions. It is fine to use the flow for a first estimate, but before it is offered as a capacity commitment the site conditions are better stated along with it.
The model is a code and the flow is a parameter, and the two correspond to each other within each series; keeping this table at hand is quicker than confirming it over the telephone.
