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公开(公告)号：US20240151595A1
公开(公告)日：2024-05-09
申请号：US18413477
申请日：2024-01-16
Applicant: TSI, Incorporated
Inventor： Frederick R. Quant , Jugal Agarwal , Siva Iyer
CPC classification number: G01K13/02 , F01D17/085 , G01K1/14 , G01P5/12 , G01K13/024
Abstract: There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
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公开(公告)号：US11933708B2
公开(公告)日：2024-03-19
申请号：US17675736
申请日：2022-02-18
Applicant: TSI Incorporated
Inventor： Hee-Siew Han , Kenneth R Farmer, II , Nathan T. Birkeland , Richard J. Remiarz , Timothy S. Russell , William D. Dick
IPC: G01N15/06 , B01D39/20 , G01F23/263 , G01N15/02
CPC classification number: G01N15/06 , B01D39/2027 , G01F23/263 , G01N15/0227 , G01N15/0255 , G01N2015/0261 , G01N2015/0693
Abstract: A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.
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公开(公告)号：US20220373381A1
公开(公告)日：2022-11-24
申请号：US17755379
申请日：2019-12-11
Applicant: TSI Incorporated
Inventor： Anthony Hase , Jeremy Ames , David Castagnetta
Abstract: Disclosed are systems and methods for measuring flowrates. The systems and methods may include passing a fluid from a unit under test into a cavity. The pressure of the fluid within the cavity may be measure and a slidable element located within the cavity may be repositioned to maintain a desired pressure within the cavity. The distance traveled by the slidable element in order to maintain the desired pressure may be determined along with a time for the slidable element to travel the distance. Using the distance traveled by the slidable element, a crosssectional area of the slidable element in contact with the fluid, and the time for the slidable element to travel the distance the volumetric flowrate for the fluid may be determined.
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公开(公告)号：US11422080B2
公开(公告)日：2022-08-23
申请号：US16346064
申请日：2017-10-30
Applicant: TSI Incorporated
Inventor： Robert Caldow , Sean Morell , Kenneth Farmer , Sreenath Avula
Abstract: Various embodiments include composite wicks for ultra-low noise condensation particle counters (CPCs). In one embodiment, a composite wick includes a first porous material having a first pore density, with the first porous material further having a first surface and an opposing second surface. A second porous material is in fluid communication with the first porous material and has a first surface with an area substantially the same as an area of the first surface of the first porous material. The first surface of the second porous material is substantially in contact with the first surface of the first porous material. The second porous material has a pore density that is dissimilar the first pore density of the first material. The first material and the second material are configured to provide vapor from a liquid to a fluid-based particle counter. Other apparatuses are disclosed.
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公开(公告)号：US20220244209A1
公开(公告)日：2022-08-04
申请号：US17596811
申请日：2019-12-30
Applicant: TSI Incorporated
Abstract: A system includes a polymer bag, a fluid network, a saturation block, and a wick. The polymer bag has a sealed envelope and a fitment. The fluid network is coupled to the fitment. The saturation block has a fluid inlet coupled to the fluid network and has a wick chamber. The wick is configured for disposition in the wick chamber.
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Patent Agency Ranking
公开(公告)号：US11305138B2
公开(公告)日：2022-04-19
申请号：US17290216
申请日：2019-10-31
Applicant: TSI Incorporated , Aerosol Dynamics Inc.
Inventor： Daniel C. Bjorkquist , Arantzazu Eiguren Fernandez , Kenneth Farmer , Melissa Grose , Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman , David Workman
Abstract: A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differential pressure sensor is coupled to the first inlet port and coupled to the second inlet port. The sensor is configured to provide a pressure signal. A processor is coupled to memory and configured to receive the first signal, the second signal, and the pressure signal and generate an output corresponding to a ratio of the first signal and the second signal and correlate the ratio with the pressure signal. A housing is configured to receive the first counter, the second counter, the differential pressure sensor, the processor, and the memory.
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公开(公告)号：US20210316175A1
公开(公告)日：2021-10-14
申请号：US17290216
申请日：2019-10-31
Applicant: TSI INCORPORATED , Aerosol Dynamics Inc.
Inventor： Daniel C. Bjorkquist , Arantzazu Eiguren Fernandez , Kenneth Farmer , Melissa Grose , Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman , David Workman
Abstract: A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differential pressure sensor is coupled to the first inlet port and coupled to the second inlet port. The sensor is configured to provide a pressure signal. A processor is coupled to memory and configured to receive the first signal, the second signal, and the pressure signal and generate an output corresponding to a ratio of the first signal and the second signal and correlate the ratio with the pressure signal. A housing is configured to receive the first counter, the second counter, the differential pressure sensor, the processor, and the memory.
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公开(公告)号：US10088425B2
公开(公告)日：2018-10-02
申请号：US15321143
申请日：2015-06-19
Applicant: TSI, INCORPORATED
Inventor： Steven G. Buckley , Darrick L. Niccum
Abstract: A LIBS measurement system is described herein that provides an orifice, aperture or opening in a substantially V-shaped chute or sleeve that allows access to the material to be analyzed from the underside of the chute. The laser beam is aimed through the hole and return light (signal) is collected through the hole by a photodetector assembly. A diverter device, which is located at an output end of the chute, diverts certain particles away from the chute upon receipt of an actuation signal.
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公开(公告)号：US20180238746A1
公开(公告)日：2018-08-23
申请号：US15551152
申请日：2016-02-15
Applicant: TSI, Incorporated
Inventor： Frederick R. Quant , Jugar Agarwal , Siva Iyer
CPC classification number: G01K13/02 , F01D17/085 , G01K1/14 , G01K2013/024 , G01P5/12
Abstract: There is disclosed a handheld air flow velocity measurement probe that includes a bridge circuit assembly having an airflow velocity sensor that is a resistance temperature detector (RTD) and a digitally controlled resistive element to dynamically adjust and maintain the resistance of the velocity sensor within the overheat temperature predefined range. The velocity measurement also uses a separate temperature sensor to sense the temperature of the air or gas flow. A humidity sensor is also included remote from the other sensors to measure humidity in the gas flow to be measured. All of the above described components are housed at a probe tip instead of a base as in most standard handheld probes and the digital interface at the probe tip allows the user to replace a bulky, expensive telescoping antenna with stackable extender scheme.
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公开(公告)号：US10041862B2
公开(公告)日：2018-08-07
申请号：US15661999
申请日：2017-07-27
Applicant: TSI, Incorporated
Inventor： Hee-Siew Han , James E. Farnsworth , Robert Caldow
Abstract: There is disclosed a field calibratable particle sensor solution in a low-cost, very compact form factor. This makes a low-cost sensor more accurate for low-concentration pollution measurements and decreases the cost of pollution measurement systems having a wide geographic coverage. In a related embodiment, the invention illustrates a method and system to remotely and automatically calibrate one or more of the low cost sensors disclosed herein as well as other commercially available sensors (such as optical particle counters, photometers etc.) against a reference instrument (such as a beta attenuation monitor) which may or may not be physically located in the same place as the individual sensors. The method may require minimum (or no) user interaction and the calibration period is adjustable periodically.
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