The TinyHawk™ optical sensor 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.
FEATURES
- 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 pollutants | From 1 µm film thickness1 |
| Sensing distance | 0.2 – 3 m |
| Max sensing frequency | 2500 Hz |
| Spectral channels | UV-A excitation, VIS emission (oil, DOM) |
| Typical UV excitation power | <100 mW (average optical power of 2.5 kHz pulses) |
| Emission safety class | 3B optically (avoid UV exposure!) |
| Operational Temperature | -10°C to +60°C |
| Enclosure | IP68, 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 |
| Communication | MODBUS RS-485, 4-20 mA line |
| Dimensions | 100x100x90 mm (WxLxH, standard option) |
| Weight | <0.8 kg (ATEX option 2.5 kg) |
| CE Declared with Applied Standards | EN 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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