Write us

FAGUS-GRECON Greten GmbH & Co. KGHannoversche Straße 58
31061 Alfeld

To contact form

How to reach us

Enter your search term and confirm with the Return key.

Do you have questions?

We are happy to help you with our service box
Telephone, in writing, or in person.

To the contact

Hot Particle Detector HPD 1/8

Detection of hot particles and glowing embers

Industrial  production  processes  often  create  hot materials or hot large masses without them glowing in a visible range. Coaly or sooty deposits within ducts or high volumes of comminution processes as they occur in exhaust ducts of hardening shops or foundries as well as in recycling plants,  for  example,  are  detected  by the HPD  1/8  detector.  The  HPD  1/8  detector reliably detects dangerous potentials in this low, non-glowing temperature range.

Technical Specification

Technical Specification

In a brief

Highly sensitive detector to detect hot and glowing particles in pneumatic and mechanical conveying facilities. Insensitive to daylight and artificial light.


Supply voltage range: 18 V to 22 V DC
Current drawn at 20 V: 10 mA ± 1 mA
Spectral response: 3500 nm to 5100 nm
Visual angle: 100°, can be asymmetrically limited by optional slotted diaphragm, 100° / 11°
Temperature range, environment -40 °C to +70 °C
Ambient temperature range: ex-free zone -40 °C to +60 °C, ex-zone -20 °C to +60 °C
Ambient temperature in material flow: ≤ 70 °C
Temperature range, storage: -40 °C to +70 °C
Storage temperature: -20 °C to +60 °C
Relative humidity: 0 to 95 %, non-condensing
Transportation speed: 2 to 50 m/s (other speeds on demand)
Use: in areas with daylight and/or artificial light, ex-free areas, ex-zone 22
Connection: connecting terminals (max. 2.5 mm²)
Cable length: 3 x 0.75 mm², max. 1000 m, 3 x 1.50 mm², max. 2000 m, 3 x 2.50 mm², max. 3000 m
Material of housing: Macrolon
Degree of protection: IP 65
Connection: pre-fitted connecting cable, pluggable: cable length 2.5 m (3 x 0.5 mm²) optionally 25 m (3 x 0.5 mm²)
Housing dimensions: 200 x 80 x 70 mm
Housing colour: basic housing grey, housing cover painted green, RAL 6029
Weight: HPD 1/8 approx. 520 g, HPD 1/8 Ex approx. 650 g
Available mounting adapters: threaded adapter DLD Ex, welding adapter DLD Ex, air purge adapter, slotted diaphram (option)