True density measurement device
AssigneeMicrotracBEL Corp.
InventorsKazuyuki Nakai, Hiromi Yamazaki, Kaori Nakamura, Takayuki Goumoto
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Abstract
This true density measurement device is a device that is used to measure the true density of a sample by a gas phase substitution method, and is provided with: a sample chamber for accommodating the sample, the sample chamber being pressurized through the introduction of an inert gas; and an expansion chamber into which is released the inert gas filling the sample chamber. The expansion chamber under conditions of normal use, is opened and closed by a detachable cover, and the volume thereof is modified by insertion or withdrawal of a volume modification member.
Claims4
A true density measurement device for measuring a true density of an object to be measured with a gas phase substitution method, the true density measurement device comprising:
- a sample chamber that houses the object to be measured, and is pressurized by introducing an inert gas into the sample chamber;
- an expansion chamber into which the inert gas having been introduced into the sample chamber is released;
- a capacity changing member that can be housed in the expansion chamber;
- and
- a notifying section that recommends use of the capacity changing member based on a relationship between a previously obtained capacity of the expansion chamber and a measurement error, wherein;
- the expansion chamber is opened and closed by a lid which can be attached or detached under normal usage conditions, and has a variable capacity that is changed by inserting or removing the capacity changing member.
Dependencies are inferred from the claim text.