Pro20i Dissolved Oxygen Meter with 4-meter Integral Cable and Polarographic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI (CAT#: STEM-AIAE-0050-ZJF)

The Pro20i Dissolved Oxygen Meter manufactured by YSI is a rugged, user-friendly instrument for the measurement of dissolved oxygen, temperature, and barometric pressure.
The Pro20i is a direct replacement for the model 55 and 550A dissolved oxygen instruments.
A user-friendly and convenient calibration routine is provided, as well as the ability to store 50 data sets. With its IP67 waterproof rating, rubber over-molded case, and 1-meter drop tests, this instrument is designed for years of use even in the harshest field conditions.
The Pro20i has an integral cable, while the Pro20 has a user-replaceable (detachable) cable.

SKU: 607125
Kit Option: 4-meter Integral Cable, Polarographic Sensor Kit
Measurement Range: Dissolved Oxygen % Saturation: 0 to 500%; Dissolved Oxygen mg/L: 0 to 50 mg/L; Temperature: -5 to 55°C; Barometer: 400 to 999.9 mmHg
Cable Options: 1-, 4-, 10-m lengths (3.28, 13.1, 32.8 ft.)
Certifications: RoHS, CE, WEEE, IP-67 waterproof, 1-meter drop test
Languages: English, Spanish, German, French
Memory: 50 data sets
Power: 2 alkaline C-cells providing ~400 hours of battery life (without backlight); low battery indicator when 1 hour is left
Size: 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in. x 8.5 in. x 2.2 in.)
Warranty: 3-year instrument; 2-year cable; 1-year polarographic sensors; 6-month galvanic sensors
Weight: 475 grams (1.05 lbs.) (with batteries)

Integrated field cable of 1-, 4-, 10-meters; user-replaceable DO sensors
The One Touch Cal allows for easy calibration of the DO in just 3 seconds by pressing a button. Compensation for barometric pressure automatically
The fastest response times on the market; 95% response time in approximately 8 seconds with standard membranes
Stores 50 data sets, no need to write them down
Backlit display, large graphic, and glow-in-the-dark keypad
The display is visible even when wearing polarized sunglasses.
IP-67 waterproof, impact-resistant case. With or without the battery cover, the device is waterproof.
Extra durability is provided by the rubber over-molded case.
English, Spanish, French, and German are all available.
Warranty: 3 years on the instrument and 2 years on the integral cable; 1 year on the polarographic sensors; 6 months on the galvanic sensors

Pro20i Dissolved Oxygen Meter with 1-meter Integral Cable and Polarographic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI
Pro20i Dissolved Oxygen Meter with 1-meter Integral Cable and Galvanic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI
Pro20i Dissolved Oxygen Meter with 4-meter Integral Cable and Galvanic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI
Pro20i Dissolved Oxygen Meter with 10-meter Integral Cable and Polarographic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI
Pro20i Dissolved Oxygen Meter with 10-meter Integral Cable and Galvanic Sensor Kit, DO: 0 to 500%, 0 to 50 mg/L, Temperature: -5 to 55°C, Barometer: 400 to 999.9 mmHg, YSI