Lab automation with photoelectric precision sensors

In “classical” industrial automation (factory automation) standardized sensors control the manufacturing processes. The automation of laboratory tasks (lab automation) demands additional requirements.

Miniaturisation plays an important role, as lab equipment typically is designed in smaller form factors compared to production machines in industrial manufacturing.

Mini photoelectric sensor
mini photoelectric sensor

Quite often challenging is the mini size of the objects, yet the detecting distance in the application will hardly vary.

modular photoelectric sensorelectr
sender and receiver modules in housing which is adapted to the application

Miniaturized modules, consisting of lenses, sender and receiver elements are positioned with defined alignment. This allows the creation of optimized sensors for the specific application in combination with dedicateded receiver and amplifier electronics.

Here are some examples: Link

A typical application of optical sensors in lab automation is the detection of transparent slides. Since their edges have different surface properties, the sensors must tolerate this variance. Special optical sensors with a very small diameter of the light beam and the smallest possible opening angle are used for this purpose.

object slides
object slides

For liquid handling in the context of laboratory analysis optoelectronic sensors offer advantages for monitoring the processes.

One field of applications is the detection of microbubbles with specially optimized sensors.

micro bubble detection sensor
drawing of specialized photoelectric sensor for microbubble detectionsensor to detect

Links to the application and to a product example:

Detect microbubbles – Balluff

BOH001H (BOH ZR-T16-002-S49F-SA1) Micromote – optical sensor heads – BALLUFF

Lab-on-a-chip will gain tremendous market share within the next years

microfluidic with liquid detection sensor

Examples for sensors in life sciences:

Link

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