Keterangan :
YSI 550A Instrument General Specifications
Cables 12, Â 25, 50, or 100- foot lengths
Calibration Push-button, built-in calibration chamber
Certifications CE, IP-67, High-impact resistance
Dimensions 11.9 cm width x 22.9 cm length ( 4.7 in x 9 in)
Display Large, backlit
Medium Fresh, sea, or polluted water
Parameter Compensation
Automatic temperature compensation for dissolved oxygen
Automatic salinity compensation with manual salinity input from 0-70 ppt for dissolved oxygen
Altitude compensation for calibration
Power 4 alkaline C-cells; Over 2000 hours at 25° C; Low battery indicator on display
Warranty
3-year instrument; 1-year DO module
Weight with Batteries
0.91 kg ( 2 lbs)
YSI 550A System Specifications ( Instrument with Cable & Probe)
Dissolved Oxygen ( % )
Sensor Type : Steady-state Polarographic
Range : 0 to 500% air saturation
Accuracy : 0 to 200% : ± 2% of reading or 2% air
saturation, whichever is greater; 200 to
500% : ± 6% of reading
Resolution : 0.1% air saturation or 1% ; selectable
Dissolved Oxygen ( mg/ L)
Sensor Type : Polarographic
Range : 0 to 50 mg/ L
Accuracy : 0 to 20 mg/ L: ± 0.3 mg/ L or 2% of reading,
: whichever is greater; 20 to 50 mg/ L: ± 6%
: of reading
Resolution : 0.1° C