公开(公告)号：US20180372607A1

公开(公告)日：2018-12-27

申请号：US15527710

申请日：2015-11-19

Applicant: HACH LANGE GMBH

Inventor： MANFRED BATTEFELD ,  HANS-JOACHIM KUMPCH ,  AXEL LEYER ,  BAS DE HEIJ ,  CLEMENS HANSCHKE ,  MICHAEL KUEPPERS ,  ANDREAS JONAK ,  ELK FRICKE ,  HEINZ RUDDE ,  MARKUS HAHN ,  MARKUS LENHARD ,  ROLF UTHEMANN ,  SEBASTIAN MINKE ,  ANDREAS GOLITZ ,  BERND GASSNER ,  FRANK STEINHAUER ,  LOTHAR HEIDEMANNS ,  ANDREAS MITREITER

IPC: G01N15/06 ,  G01N21/15 ,  G01N21/53

CPC classification number: G01N15/06 ,  G01N21/15 ,  G01N21/51 ,  G01N21/53 ,  G01N2015/0693 ,  G01N2021/157 ,  G01N2021/158 ,  G01N2201/0233 ,  G01N2201/0235 ,  G01N2201/0238

Abstract: A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a transparent sample cuvette. The nephelometric turbidimeter includes a cuvette chamber housing with a cuvette chamber having the transparent sample cuvette arranged therein, and a drying apparatus. The drying apparatus includes a cuvette chamber inlet opening which vents the cuvette chamber, a cuvette chamber outlet opening which de-vents the cuvette chamber, an air circulator which circulates air from the cuvette chamber outlet opening to the cuvette chamber inlet opening, and a drying body. The drying body is provided as a container of a hygroscopic agent defined by a drying substance which is arranged in a drying path between the cuvette chamber outlet opening and the cuvette chamber inlet opening so that air flows through the drying body.

公开(公告)号：US20240159664A1

公开(公告)日：2024-05-16

申请号：US18282458

申请日：2022-03-16

Applicant: Medclair AB

Inventor： István Szabó ,  Jerker Sundling ,  Tomas Nyberg

IPC: G01N21/3518 ,  G08B21/12

CPC classification number: G01N21/3518 ,  G08B21/12 ,  G01N2201/0235 ,  G01N2201/0245

Abstract: The present invention relates to a gas sensor (100) comprising a measurement chamber (102) for measuring presence of a first gas, the first gas being nitrous oxide (N2O) and an optical source (103) for emitting radiation in the measurement chamber (102). The sensor also comprises a radiation detector (104) sensitive to radiation emitted by the optical source (103), the radiation being detected by the radiation detector (104) following passage through the measurement chamber (102). A diffusion layer (131) is configured to allow diffusion of ambient gas into and out from the measurement chamber (102), and the diffusion layer (131) comprises means (133) for preventing diffusion of carbon dioxide (CO2) in the ambient gas into the measurement chamber (102). The invention also relates a nitrous oxide detector comprising such a gas sensor, and a method for determining presence of nitrous oxide in the ambience.

公开(公告)号：US20230243753A1

公开(公告)日：2023-08-03

申请号：US18156464

申请日：2023-01-19

Applicant: SciAps, Inc.

Inventor： David Day

IPC: G01N21/71

CPC classification number: G01N21/718 ,  G01N2201/0221 ,  G01N2201/0235

Abstract: A handheld LIES device includes a laser source for generating a laser beam, a spectrometer subsystem for analyzing a plasma generated when the laser beam strikes a sample, and a nose section including an end plate with an aperture for the laser beam and for receiving plasma radiation and an optic spaced from the end plate defining with the end plate a cavity therebetween. An atmospheric purge subsystem includes an air pump with an intake exposed to the atmosphere and a conduit connected to the air pump providing an atmospheric gas mixture to the nose section cavity to purge the cavity of contaminants and keep the optic clean as the atmospheric gas mixture exits the cavity through the end plate aperture.