microFlu V2
Submersible miniature fluorometer for highly accurate and selective measurement of tryptophan, cdom, blue-green algae or chlorophyll.
microFlu V2 fluorometers are submersible miniature fluorometers for highly precise and selective measurement of tryptophan, cdom, blue-green algae or chlorophyll. The combination of low power consumption and innovative coating of the measurement windows as an energy and environmentally neutral antifouling solution ensures long-term stability of the measurements. The instruments can be used in a wide range of applications for monitoring seawater, river water, drinking water and wastewater. Internal reference measurements of the high-power LED used for fluorescence excitation compensate for aging effects and temperature influences. microFlu V2 is equipped with a RS-485 interface, which enables allows easy and fast sensor configuration via Modbus. Integration into existing process control systems and external data loggers has never been easier. |
Light Source | LED + Filter | |
Detector | Photo diode + filter | |
Measurement principle | Fluorescence | |
Parameter | Chlorophyll a [µg/L] Phycocyanin [µg/L] cdom [µg/L] Tryptophan [µg/L] | |
Measuring range | See parameter list | |
Detection limits | See parameter list | |
Measurement accuracy | +/- (5 % + Detection limit) | |
Turbidity compensation | No | |
Data logger | No | |
T100 response time | 6 s (default) | |
Measurement interval | 3 s (default) | |
Housing material | Stainless steel (1.4571/1.4404) or titanium (3.7035) | |
Dimensions (L x Ø) | ~ 162 mm x 48 mm | ~ 6.4“ x 1.9“ |
Weight stainless steel | ~ 650 g | ~ 1.4 lbs |
Weight titanium | ~ 510 g | ~ 1.1 lbs |
Interface digital | RS-485, Modbus RTU 4...20 mA (default) | |
Interface analog | 0 – 5 V 0 – 10 V | |
Power consumption typical | max. 0.6 W | |
Power consumption with activated analog interface | max. 1.1 W | |
Power consumption Power-Down | max. 70 mW | |
Power supply | 12 – 24 VDC (± 10 %) | |
Maintenance effort | ≤ 0.5 h/month (typical) | |
Calibration/maintenance interval | 24 months | |
Warranty | 1 year (EU: 2 years) | USA: 2 years |
Max. pressure with SubConn | 30 bar | ~ 435 psig |
Max. pressure with fixed cable | 3 bar | ~ 43.5 psig |
Max. pressure in FlowCell | 1 bar, 2...4 L/min | ~ 14.5 psig, 0.5 to 1 gpm |
Protection type | IP68 | NEMA 6P |
Sample temperature | +2...+40 °C | ~ +36 °F to +104 °F |
Ambient temperature | +2...+40 °C | ~ +36 °F to +104 °F |
Storage temperature | -20...+80 °C | ~ -4 °F to +176 °F |
Inflow velocity | 0.1...10 m/s | ~ 0.33 fps to 33 fps |
Sensor Version | Parameter | Ex / Em (Excitation / Emission) | Measurement Range | Detection Limit |
chl | Chlorophyll a | 470 nm / 685 nm | 0 – 200 μg/L | 0,05 μg/L |
chl | Chlorophyll a | 470 nm / 685 nm | 0 – 500 μg/L | 1 μg/L |
blue | Cyanobakteria | 620 nm / 655 nm | 0 – 200 μg/L | 0,5 μg/L |
blue | Cyanobakteria | 620 nm / 655 nm | 0 – 500 μg/L | 2 μg/L |
cdom | coloured dissolved organic mater | 375 nm / 460 nm | 0 – 500 μg/L | 0,25 μg/L |
TRP | Tryptophan | 275 nm / 360 nm | 0 – 500 μg/L | 3 μg/L |
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