# US 8,542,363 B2 · Self-aligning light source and detector assembly for absorbance measurement

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- Number: US 8,542,363 B2
- Document ID: US8542363B2
- Status: Granted
- Kind: B2
- Application number: 12/975,597
- Filed: 2010-12-22
- Published: 2012-06-28
- Granted: 2013-09-24
- Earliest claimed: 2010-12-22
- Assignees: Endress+Hauser Conducta GmbH+Co. KG
- Applicants: William H. Wynn; Michael Weiss; Guido Mertens
- Inventors: William H. Wynn; Michael Weiss; Guido Mertens
- Web page: https://patentgrep.com/patent/US8542363B2

## CPC

- G01N 21/01: Arrangements or apparatus for facilitating the optical investigation
- G01N 21/8507: {Probe photometers, i.e. with optical measuring part dipped into fluid sample}
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

Self-aligning light source and detector assembly having a sensor support mounted in a predetermined, fixed position, a light source holder mounted in a predetermined, fixed position relative to the sensor support, a sensor mounted in a fixed position on the sensor support, and a lamp assembly removably mounted to the light source holder in a predetermined position defined by mating surfaces which engage each other and seat the lamp assembly in the predetermined position whenever the lamp assembly is installed in the holder.

## Claims

### Claim 1

A measuring system for absorbance measurements in a process medium, in particular in a pharmaceutical or biotechnological process, comprising:
a disposable container in which the process medium is received, the container comprising a container wall, in which a probe head is accomodated, said probe head comprising a first bore for receiving a light source holder and a second bore for receiving a sensor support;
a light source and detector assembly, comprising the light source holder and said sensor support mounted in a mounting block in a predetermined, fixed position relative to each other, a lamp assembly mounted to said light source holder in a predetermined position and a detector mounted in a fixed position on said sensor support, wherein:
said light source holder and said sensor support are received in said first and second bore of said probe head respectively, and
said probe head comprises apertures providing a light beam passageway between said lamp assembly and said detector.

### Claim 2 (depends on 1)

The measuring system of claim 1, wherein:
said light source and said detector assembly is removably attached to said probe head.

### Claim 3 (depends on 1)

The measuring system of claim 1, wherein:
said container comprises a flexible container wall.