Waterproof dissolved O2 handheld measuring device without accessories with data logger and alarmHIGHLIGHTSWaterproof and durable (protective silicone case)Large double display with background lightingEnvironmental pressure compensation with integrated barometerData logger and alarm functionAnalogue output, pressure connectionAPPLICATION:Oxygen monitoring in aquaculture and aquaria. Testing of well water, sewer systems and in wastewater treatment plants, also suitable for harsh environments. Delivery can take place ready for use (filled) or dry. Electrodes delivered try are long lasting and ready for use within about 1 h after filling.SPECIFICATIONS: Measuring channels: 
O 2 , T, air pressure (integrated) / measuring depth
Measuring ranges
O 2 -concentration: 
0.00 ... 70.00 mg / l (ppm) (Variable resolution)
O 2 -saturation: 
0.0 ... 600.0% O 2  (Variable resolution)
O 2 -partial pressure: 
0 ... 1200 hPa O 2 (0.0 ... 427.5 mmHg)
Temperature: 
0.0 ... 50.0 ° C
Air pressure: 
300 ... 5000 hPa abs
Measuring depth:
0 ... 40.0 m water column
Accuracy
Oxygen: 
± 1.5% of mv ± 0.2 mg / l (0 ... 25 mg / l) or
± 2.5% of mv ± 0.3 mg / l (25 ... 70 mg / l)
Temperature: 
0.0 ... 50.0 ° C
Air pressure: 
300 ... 5000 hPa abs
Scope of supply: 
Device incl. Batteries (2 x AAA), protective silicone case, calibration protocol, manual, quick guide