Sensor Instruments
Entwicklungs- und Vertriebs GmbH
Schlinding 15
D-94169 Thurmansbang
Telefon +49 8544 9719-0
Telefax +49 8544 9719-13
info@sensorinstruments.de

Reflected light measurement systems for spray jet monitoring (Ex area)


In reflected light fiber optic applications, the spray jet is monitored using the reflection principle. Even the smallest spray quantities can be reliably detected. By using reflected light fiber optics, the control electronics can be installed outside the Ex zone, making this method ideal for applications in hazardous, explosion prone environments. In addition, the fiber optic head can be equipped with a blow air attachment (slight overpressure), which effectively prevents contamination of the optics and ensures long term stable measurement.

See also our brochure on inline spray jet monitoring: 
 



Single channel inline spray jet monitoring in Ex zones using the reflected light method
 
When extremely small spray quantities need to be detected, a reflected light spray jet system is the preferred choice. The SPECTRO-T-1-FIO-JC-RL spray jet monitoring system, in combination with the fiber optic frontend ABL-V-ARRA-KL-M18-XL A3.0, features a hardware integrator that enables reliable detection of even the smallest spray amounts. Thanks to the fiber optic frontend, the system is also suitable for use in Ex zones. The blow air attachment integrated into the frontend prevents droplet deposition on the optics. The working distance between the measuring head and the spray jet is 50 mm.


NEWS

Participation at trade fairs:

2026
 •   Fakuma 
 •   PLASTIMAGEN® 
 •   Plastics & Rubber Indonesia

2027
 •   Textiles Recycling Expo 

more...


Whitepaper:

Smarter textile sorting
A next-generation, AI-supported multi-sensor sorting system for the circular textile economy
 
From plastic flakes to color-perfect recyclate
Inline color measurement and control for consistent recyclate quality
 

 
Whiteness control of sugar in a vertical batch centrifuge 
(using SPECTRO-3-1000-COF-d50.0-MSM-ANA-V4A color sensor)

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Brochures:


Inline Gloss Measurement of Plastic Pipes
Consistent surface quality - directly in the production line


 

Inline Spray Jet Control
Sensors and sensor systems for Inline spray jet control

 

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Specialist article:

  Automatically Adjusting to the Desired Color
Constant Recyclat Color Values through Inline Measurement  
Plastics Insights 05/2025

 

more...

Video:

  Sensor systems for the plastics recycling industry
Color measurement of recyclates

 

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A
pplications:


Detection of dents and bumps on metal punching strips
(N° 801)
Differentiation of leather, fabric and synthetic interior components
(N° 802)
Plastic cap color measurement
(N° 803)

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WHAT IS ...
... surface tension?
... oil evaporation?
... oil layer thickness
    measurement?

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Software news:

SPECTRO3-MSM-DIG-Scope V1.5 (2021.10.20)
V1.5.2

more...




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