US 12,135,232 B2
Remaining mobile phase scale
Toshiki Sano, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/630,547
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Aug. 19, 2019, PCT No. PCT/JP2019/032282
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2021/033235, PCT Pub. Date Feb. 25, 2021.
Prior Publication US 2022/0244091 A1, Aug. 4, 2022
Int. Cl. G01G 17/04 (2006.01); G01G 23/00 (2006.01)
CPC G01G 17/04 (2013.01) [G01G 23/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A remaining mobile phase scale comprising:
a weighing scale including a plurality of individual stages on which mobile phase bottles containing a mobile phase are placed and a plurality of individual weight sensors that respectively measure weight of mobile phase bottles respectively placed on the plurality of individual stages;
a detachment-attachment holder detachably and attachably placed on the plurality of individual stages such that the plurality of individual stages are integrated as one common stage; and
a mobile phase monitor that monitors a remaining amount of a mobile phase in mobile phase bottles based on measurement values of the plurality of individual weight sensors of the weighing scale,
the mobile phase monitor comprising:
a mode switcher configured to selectively switch a mobile phase monitor mode to one of a normal mode and a large capacity mode;
a first calculator configured to obtain a remaining amount of a mobile phase in mobile phase bottles respectively placed on the plurality of individual stages with use of respective measurement values of the plurality of individual weight sensors of the weighing scale, when the monitor mode is in the normal mode; and
a second calculator configured to use the plurality of individual stages as the one common stage and obtain a remaining amount of a mobile phase in a mobile phase bottle placed on the common stage with use of an operation value of measurement values of the plurality of individual weight sensors of the weighing scale, when the monitor mode is in the large capacity mode.