초록 ▼

To pump fluid into sample containers, a distributor arm of a sample collector is calibrated as to position in a computer memory and is moved from position to position over different containers while a counter in computer memory keeps track of its position. When the distributor arm is over the design

To pump fluid into sample containers, a distributor arm of a sample collector is calibrated as to position in a computer memory and is moved from position to position over different containers while a counter in computer memory keeps track of its position. When the distributor arm is over the designated container, samples are pumped into the container. To pump the fluid into the container, the rollers of a peristaltic pump are supported to prevent the rollers from compressing the tube more than the thickness of the walls of the tube. A tube holder rotates along with the roller assembly of the peristaltic pump and keeps the tube in line with the rollers.

대표청구항 ▼

1. An apparatus for drawing samples into a plurality of containers comprising:a peristaltic pump; a plurality of containers; means for drawing samples with the peristaltic pump; a distributor; means for selecting a designated container by calibrating a distributor arm as to position; a computer havi

1. An apparatus for drawing samples into a plurality of containers comprising:a peristaltic pump; a plurality of containers; means for drawing samples with the peristaltic pump; a distributor; means for selecting a designated container by calibrating a distributor arm as to position; a computer having a memory; means for moving the distributor arm to the desired container by counting changes in incremental angular movement of the distributor arm until it is over the container; means for causing at least one sample to flow to the designated container by rotating the distributor over the container and receiving a liquid for depositing into the container; means for continually updating the position of the distributor arm in memory, a stop member; means for rotating the arm against the stop member in a first direction; means for rotating the arm against the stop member in a second direction; means for calculating an amount in excess of 360 degrees of the motion of the distributor arm caused by a flexing of the stop member; and means for correcting for the excess motion.