Handheld Dissolved Oxygen Meter YSI 550A ( DO Meter)

True Field Performance from a Handheld Dissolved Oxygen Meter Looking for a rugged, field-worthy instrument for measuring dissolved oxygen? The YSI 550A dissolved oxygen meter features a waterproof IP-67, impact-resistant case and innovative field-replaceable DO electrode modules. https: / / www.youtube.com/ watch? v= cQL6nQEQtv8 Description : Measure temperature and dissolved oxygen simultaneously using highly accurate thermistors and YSI' s proven polarographic technology for dissolved oxygen. The fastest DO response times on the market. Measurements are fast and easy with one-hand operation, an easy-to-use backlit display, automatic push-button calibration, and a weighted, quick-sinking probe. The YSI550ADO has a built-in calibration chamber, low-battery indicator, direct salinity, and altitude compensation. The instrument provides simultaneous readings of oxygen and temperature. Dissolved oxygen readings are automatically compensated for temperature. Screw-on cap membranes make membrane changes easier than ever. The PE membranes are also faster responding and require far less flow dependence. The replaceable electrode decreases any down time due to old or damaged electrodes. Simply unscrew the old electrode, replace it with a new one, and calibrate! No need to send it in or to replace the whole cable assembly. The cables are now even stronger! If you' re interested in dissolved oxygen measurements please take a look at our NEW Professional Series products Pro20 or optical DO handheld ProODO. Features: Field-replaceable DO electrode modules Screw-on cap membranes IP-67 case Over 2000 hours battery life Calibrate in either mg/ L or % saturation Please visit our extensive dissolved oxygen resource page to learn about all things DO and BOD related; www.YSI.com/ weknowDO. You can also download The Dissolved Oxygen Handbook - the definitive guide on all things DO. Specification : YSI 550A Instrument General Specifications Cables 12, 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) Sensor Type Range Accuracy Resolution Dissolved Oxygen ( % ) Steady-state Polarographic 0 to 500% air saturation 0 to 200% : ± 2% of reading or 2% air saturation, whichever is greater; 200 to 500% : ± 6% of reading 0.1% air saturation or 1% ; selectable Dissolved Oxygen ( mg/ L) Polarographic 0 to 50 mg/ L 0 to 20 mg/ L: ± 0.3 mg/ L or 2% of reading, whichever is greater; 20 to 50 mg/ L: ± 6% of reading 0.01 mg/ L or 0.1 mg/ L; selectable Temperature Thermistor -5 to 45° C ± 0.3° C 0.1° C Ordering Guide Item # Description 550A-12, 25, 50 or 100 Instrument with 12, 25, 50 or 100-foot cable and probe 550A-12CC, 25CC, 50CC, or 100CC Instrument with 12, 25, 50 or 100-foot cable and probe with carrying case 5908 Membrane kit, 1.25 mil PE ( 6 caps and bottle of KCl) 559 User-replaceable DO electrode Accessories : YSI 559 Polarographic DO Sensor for 550A and 556 559 Replacement Polarographic DO Sensor YSI 559 Polarographic sensor for the 550A DO and 556 Multiparameter instruments. YSI 5908 Screw-On Dissolved Oxygen Cap Membrane Kit 5908 DO Cap Membrane Kit YSI 5908 screw-on cap dissolved oxygen membranes.