Claims
- 1. A density measuring method for measuring a density of a material collected in a working environment by a collecting unit configured to collect the material to be measured, said method comprising:
- receiving and collecting the material from the working environment in the collecting unit at an upstream side of the collecting unit;
- providing a detector configured to detect the material at a downstream side of the collecting unit, said downstream side being a side opposite to the upstream side;
- detecting passage of the material through said collecting unit by said detector;
- stopping the step of receiving and collecting the material when said passage is detected; and
- measuring the density of said material by quantifying the material being collected in said collecting unit until the step of stopping the receiving and collecting of the material.
- 2. A density measuring method for measuring a density of a material collected in a working environment, said method comprising:
- collecting the material in a collecting unit;
- detecting the passage of the material through the collecting unit at a position adjacent to a downstream side of said collecting unit, said downstream side being opposite to a side of the collecting unit initially receiving the material being collected;
- stopping the step of collecting the material when said material is detected in said detecting step; and
- measuring a density of the material by quantifying the material collected by said collecting unit until the step of stopping the collecting of the material occurs.
Priority Claims (2)
Number |
Date |
Country |
Kind |
7-295862 |
Nov 1995 |
JPX |
|
8-294195 |
Nov 1996 |
JPX |
|
Parent Case Info
This application is a Division of application Ser. No. 08/748,980 filed on Nov. 14, 1996, now U.S. Pat. No. 5,861,053.
US Referenced Citations (15)
Divisions (1)
|
Number |
Date |
Country |
Parent |
748980 |
Nov 1996 |
|