A flow meter includes an image sensor, a coupler, a support member and one or more processors. The coupler is adapted to couple to a drip chamber. The support member is operatively coupled to the coupler. The image sensor has a field of view and is operatively coupled to the support member. The image sensor is positioned to view the drip chamber within the field of view. The processor receives data from the image sensor and is configured to: receive a first image from the image sensor, compare the first image to a second image, and generate a difference image based upon the comparison between the first and second images.

A flow meter includes an image sensor, a coupler, a support member and one or more processors. The coupler is adapted to couple to a drip chamber. The support member is operatively coupled to the coupler. The image sensor has a field of view and is operatively coupled to the support member. The image sensor is positioned to view the drip chamber within the field of view. The processor receives data from the image sensor and is configured to: receive a first image from the image sensor, compare the first image to a second image, and generate a difference image based upon the comparison between the first and second images.

Disclosed is a basement sewer drain pump housing that draws fluid from a drain into a housing, the fluid is discharged from the housing and out of the basement. The device comprises a pickup tube having a fluid level sensor, which is placed within a sewer main drain or floor drain. The housing comprises an enclosed volume, a suction tube connected to the pickup tube, a suction pump, and a discharge pump. The pump is activated by a switch controlled by the pickup tube fluid sensor, the fluid is drawn into the housing from the drain and discharged through a discharge pipe. The device operates from outlet or battery and serves as a basement drain pump that prevents fluid and sewage backflow during power outages and plumbing blockages. Another modification provides two donuts to prevent the flow of fluid blocking both the floor drain and the main sewer drain.

A shallow fluid extractor is configured to remove a low level of a fluid from a designated area. The shallow fluid extractor includes a vacuum pump assembly further including an electrical power source connected to a vacuum and a pump. A pipe assembly is configured within the designated area and connected to the vacuum pump assembly. When the low level of the fluid is reached the vacuum draws the fluid through the pipe assembly into the vacuum pump assembly which is then pumped away by the vacuum pump assembly.

A shallow fluid extractor is configured to remove a low level of a fluid from a designated area. The shallow fluid extractor includes a vacuum pump assembly further including an electrical power source connected to a vacuum and a pump. A pipe pick up assembly is configured within the designated area and connected to the vacuum pump assembly. When the low level of the fluid is reached the vacuum draws the fluid through the pipe pick up assembly into the vacuum pump assembly which is then pumped away by the vacuum pump assembly.

Disclosed is a sheath delivery system that uses a continuous flow of sheath fluid into a pressurized internal reservoir that substantially matches the outflow of sheath fluid through the nozzle of a flow cytometer. A substantially constant level of the sheath fluid is maintained. If the sheath fluid level falls below a desired level, or goes above a desired level, a dampened control system is used to reach the desired level. In addition, air pressure in the pressurized internal container is controlled so that an external sheath container can be removed and refilled with additional sheath fluid without stopping the sheath delivery system 100. Differences in pressure are detected by a droplet camera, which measures the droplet breakoff point to determine the pressure of the sheath fluid in the nozzle.

An apparatus, system and method for regulating fluid flow are disclosed. The apparatus includes a flow rate sensor and a valve. The flow rate sensor uses images to estimate flow through a drip chamber and then controls the valve based on the estimated flow rate. The valve comprises a rigid housing disposed around the tube in which fluid flow is being controlled. Increasing the pressure in the housing controls the size of the lumen within the tube by deforming the tube, therefore controlling flow through the tube.

A sensing unit for detecting an amount of liquid stored in a storage chamber is configured so that: a direction of a first moment which is a moment about a shaft produced by self weights of a rotating member, a float, and a receiver is a direction in which the float is moved from a first position to a second position vertically below the first position; and a direction of a resultant moment obtained by combining a second moment, which is a maximum moment about the shaft produced when the receiver receives liquid supplied to the storage chamber, and the first moment is a direction in which the float is moved from the second position to the first position.

A method of monitoring a low water volume within a water circulation system is disclosed that includes detecting an auxiliary measurement associated with an ancillary device fluidly coupled with a reservoir of water in a water circulation system and then determining whether the ancillary device is performing under a low water volume operation. The low water volume operation is based upon a comparison between at least the detected auxiliary measurement of the ancillary device and a condition associated with a performance of the ancillary device under the low water volume operation.

A device for containment of fluid escaping from a pipe, comprising a can having a surrounding wall and a bottom: The bottom is formed of bottom segments that combine to form a bottom opening with a bottom inward facing sealing surface for sealing against the pipe. The surrounding wall is formed of wall segments that combine to form an enclosure defining an interior of the can. The drain further comprises a drain opening exposed to the interior of the can. The can may include fluid level sensors that activate a suction pump.