Hach Lange Gmbh

Other

Bas De Heij

Manfred Battefeld

Andreas Mitreiter

Hans-Joachim Kumpch

Andreas Golitz

Clemens Hanschke

Michael Kussmann

Axel Leyer

Frank Steinhauer

Bernd Gassner

Michael Kueppers

Perry A Palumbo

Markus Lenhard

Aria Farjam

Ulrich Lundgreen

Lothar Heidemanns

Rolf Uthemann

Andreas Jonak

Markus Hahn

Heinz Rudde

Wayne Boris Perdue

Michael Küppers

Sebastian Minke

Barbara Haase

Elk Fricke

Andreas Schwenk

Kai Berggold

Bernd GAßNER

Sven Bergmann

Maik Heuwold

Michael Kuppers

Wayne Perdue

Hans Joachim Kumpch

Eik Fricke

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.

Nephelometric turbidimeter and method for controlling the humidity of venting air in a nephelometric turbidimeter

A method for detecting a contamination of a cuvette of a turbidimeter. The turbidimeter includes a light source which emits a light beam directed to a cuvette, a scattering light detector, and a diffuser with a body and an actuator. The actuator moves the body between a parking position and a test position where the body is between the measurement light source and the cuvette, thereby interferes with the light beam, and generates a diffuse test light entering the cuvette. The method includes activating the actuator to move the body from the parking position into the test position, activating the light source, measuring a test light intensity received by the scattering light detector, comparing the test light intensity measured with a reference light intensity, and generating a contamination signal if a difference between a reference light intensity and the test light intensity measured exceeds a first threshold value.

Method for detection of the contamination of a sample cuvette of a nephelometric turbidimeter

A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette. The nephelometric turbidimeter includes a measurement light source configured to emit an axial parallel light beam directed to the sample cuvette, a scattering light detector arranged to receive a scattered light from the sample cuvette, and a diffuser comprising a diffuser body and a diffuser actuator. The diffuser actuator is configured to move the diffuser body between a parking position in which the diffuser body does not interfere with the axial parallel light beam and a test position where the diffuser body is arranged between the measurement light source and the sample cuvette so that the diffuser body interferes with the axial parallel light beam and generates a diffuse test light entering the sample cuvette.

Nephelometric turbidimeter and method for detection of the contamination of a sample cuvette of a nephelometric turbidimeter

A nephelometric turbidimeter with a cylindrical turbidimeter vial. The cylindrical turbidimeter vial includes a transparent vial body and a circular optical shielding configured to optically block an inside from an outside of the turbidimeter vial. The vial body comprises a transparent and flat bottom inlet window, and a transparent vial cylinder body. The vial cylinder body comprises a circular outlet window. The optical shielding is arranged axially above the outlet window of the vial cylinder body, over a part of an axial length of the vial cylinder body, and axially adjacent to a non-shielded part of the vial cylinder body which serves as the outlet window.

Nephelometric turbidimeter

A nephelometric turbidimeter vial arrangement includes a vial and a separate vial cap. The vial comprises a transparent cylindrical vial body configured to enclose a vial interior, a bottom inlet window, and a top vial opening configured to be circular. The separate vial cap comprises a light trap cavity. The separate vial cap is configured to close the top vial opening. The light trap cavity comprises an inner surface which comprises a light absorbing surface. The light trap cavity is configured to be open to the vial interior.

Nephelometric turbidimeter vial arrangement

A nephelometric process turbidimeter for measuring a turbidity of a liquid sample includes a transparent sample vial which comprises a sample vial lateral inner surface. A vial head comprises a vial head lateral inner surface. The vial head and the sample vial together define a sample volume of a liquid sample having a shape of a cylinder. A sample inlet opening is arranged at the vial head and comprises an inlet opening axis. A sample outlet opening is arranged at the cylindrical vial head lateral inner surface to be axially closer to the sample vial than to the sample outlet opening. The inlet opening axis is inclined with respect to an inlet cross plane with an inclination angle of 10&#xb0; to 80&#xb0;, and is angled with respect to a radius line from a middle of the cylinder to the sample inlet opening with a tangency angle of more than 15&#xb0;.

Nephelometric process turbidimeter

A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45&#xb0; collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45&#xb0; collecting mirror, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45&#xb0; concentration mirror arranged coaxially to the annular 45&#xb0; collecting mirror and optically opposite to the annular 45&#xb0; collecting mirror. The annular 45&#xb0; collecting mirror is arranged concentric to the light beam. The annular 45&#xb0; concentration mirror is configured to surround the scattering body.

Turbidimeter

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Dormagen, Germany

Bas De Heij