YSI Pro20i Dissolved Oxygen meter

The YSI Pro20i Dissolved Oxygen meter may be the only oxygen meter you’ll ever need! It features one-touch DO calibration (in just 3 seconds.) Plus, its built-in barometer automatically compensates for changes in barometric pressure, which improves measurement accuracy and eliminates manual entry.

The unit’s graphic backlit display and glow-in-the-dark keypad allow easy visibility in low-light conditions. The display shows auto-ranging, hold functions, battery indicator and detailed instructions in your choice of English, Spanish, French or German. Internal memory allows you to store 50 data sets for later recall on the display.

This meter features an impact-resistant, IP67 waterproof case that is over-molded with rubber, and has military specification connectors. The meter’s user-replaceable probes are designed for use either in the field or lab. Comes with built in polargraphic probe, 4 meter cable.

For instant conversion into a laboratory BOD meter, purchase the self-stirring BOD probe . It’s worth the money to purchase a tripod  if you are using the meter in a lab, but it is not required.

Includes: probe, cable assembly, hand strap, two C batteries and instructions.

Specifications:

• Dissolved oxygen range: 0 to 50 mg/L (0 to 500% air saturation)
• Dissolved oxygen resolution: 0.1 or 0.01 mg/L (%); user selectable
• Dissolved oxygen accuracy: ±0.2 mg/L (%) or ±2% of measurement; >20 mg/L (>200%); ±6% of measurement
• Temperature: -5 to 55°C with 0.1°C resolution and ±0.3°C accuracy
• Barometric pressure range: 400 to 999.9 mm Hg
• Barometric pressure resolution: 0.1 mm Hg
• Barometric pressure accuracy: ±5 mm Hg within ±5°C of calibration point
• Compensations: salinity (0 to 70 ppt, manual); altitude (automatic), temperature (automatic)
• Memory function: 50 data sets
• RS-232: no