TinyHawk™ – “Keep the surface clean”

The TinyHawk™ is designed to detect oil contamination on static background (concrete, floor, water) in continuous unattended mode. When oils are detected, the sensor can give out an ALARM which is sent via 4-20 mA standard,MODBUS, etc. Sensing, processing and alarms are done continuously in real-time mode.

The sensor operates at ultraviolet (UV-A) excitation wavelength in pulsed mode. UV-light, upon coming into contact with oil contamination will cause the re-emission of incident light with a specifically up-shifted wavelength (fluorescent light). This fluorescence is then detected and processed by the sensor – when reaching a certain signal threshold the ALARM is reported.


  • Non-contact detection of oil products on surfaces
  • No false alarms caused by other than oil objects
  • All weather design
  • Applicable in hazardous locations
  • Low size and weight, low power consumption
  • Adjustable pollution threshold to filter out minor detection events
  • Remote access to setup operational parameters
  • Operates as a stand-alone or network unit

Technical specification

Sensitivity to pollutantsFrom 1 µm film thickness1
Sensing distance0.2 – 3 m
Max sensing frequency2500 Hz
Spectral channelsUV-A excitation, VIS emission (oil, DOM)
Typical UV excitation power<100 mW (average optical power of 2.5 kHz pulses)
Emission safety class3B optically (avoid UV exposure!)
Operational Temperature-10°C to +60°C
EnclosureIP68, ATEx option*
Connection 5 meter 6-wire cable (red:12 VDC, black-GND, white: Data+, blue: Data-, yellow and orange: 4-20 lines)
Power consumption~1,5W, 12-35 VDC (standard) or 110/220 VAC 50/60 Hz with adapter
CommunicationMODBUS RS-485, 4-20 mA line
Dimensions100x100x90 mm (WxLxH, standard option)
Weight<0.8 kg (ATEx option 2.5 kg)
CE Declared with Applied StandardsEN 61010-1:2010*, EN 61000-6-2:2004*, EN 61000-6-3:2007*, ATEX Directive 94/9/EC*

[1] Depends on the type of oil product,
[*] – To be certified

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