How to choose a mist collector
How to choose the GME series
Select mist collector model based on the required airflow. Check the required airflow in the following order.
When the mist source is highly airtight
| Q: | Required processing air volume of mist collector (m³/min) |
| (A×B×C): | Processing chamber volume (m³) |
| N: | Ventilation rate per minute (N/min) The ventilation rate can be set between 4 and 8 times. |
When the mist source is not airtight
| Q: | Required processing air volume of mist collector (m³/min) |
| A×B: | Opening area (m²) |
| V: | Wind speed 0.5 (m/sec) |
Model selection example (when the mist source is highly airtight)
When selecting mist collector to be attached to an NC lathe with dimensions A=1000mm, B=1000mm, and C=1000mm with a ventilation rate of 8 times.
①Calculate the approximate required processing air volume of mist collector.
Q = 1 x 1 x 1 x 8 = 8.0 (m³/min)
②Preliminary selection of mist collector.
We will provisionally select a model with a maximum airflow rate that exceeds the required processing airflow rate in ①. In this case, we will select the GME-S750-Pro, which has a maximum processing airflow rate of 12.6 m³/min.
③Calculate the length of the straight pipe section.
1.0 + 1.0 + 0.5 = 2.5(m)
④Calculate the equivalent straight pipe length of the bent section from Table 1.
As the R/D of the bend is 1.5, the equivalent straight pipe length is 10D from Table 1. As there are two bends and the duct diameter connected to the outlet of the GME-S750-Pro provisionally selected in ② is φ125, the equivalent straight pipe length of the duct bend can be calculated as follows:
10×0.125×2 = 2.5(m)
⑤Calculate the total equivalent length of straight pipe.
2.5 + 2.5 = 5.0(m)
⑥Select mist collector.
The intersection of the resistance curve for the total equivalent straight pipe length calculated in step ⑤ and the PQ curve for mist collector provisionally selected in step ② is found (Figure 1). From Figure 1, the air volume when the equivalent straight duct length is 5m is 11.3m³/min, which exceeds the required processing air volume calculated in step ①, so the GME-S750-Pro is selected.
*Values vary depending on the type of duct. Please check with the duct manufacturer for details.
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