Offering push-button calibration with a built-in calibration chamber, direct salinity, and altitude compensation, the YSI 55 provides simultaneous readings of oxygen and temperature.

Dissolved oxygen readings are automatically compensated for temperature. Also available is the YSI 55D with a detachable cable.

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:

• Large, backlit display
• 12, 25, or 50 foot cables
• IP-65 water tight
• Low-battery indicator
• CE compliant version available

 

Please visit our extensive dissolved oxygen resource page to learn about all things DO and BOD related; www.YSI.com/weknowDO

 

 

YSI 55 Instrument General Specifications

Altitude compensation		0 to 10,000 feet
Cables		10, 25, 50, 100 feet (3, 7.6, 15.2, 30.5 meters), available with detachable cable
Certifications		IP-65 (water resistant)
Display		Backlit
Salinity Compensation		Manual 0-40 ppt
Warranty		2-year instrument

 

YSI 55 System Specifications (Instrument with Cable & Probe)

	Sensor Type	Range	Accuracy	Resolution
Dissolved Oxygen (%)	Steady-state Polarographic	0 to 200% air saturation	±2% saturation	0.1% air saturation
Dissolved Oxygen (mg/L)	Steady-state Polarographic	0 to 20 mg/L	±0.3 mg/L	0.01 mg/L
Temperature	Thermistor	-5 to 45°C	±0.2°C	0.1°C

Manuals

55 Handheld Dissolved Oxygen and Temperature System Operations Manual

Français - YSI 55 Manuel d’utilisation, Rev D

Español - 55 Handheld Dissolved Oxygen and Temperature System Operations Manual

Tips, FAQs & Guides

YSI 55 DO Instrument FAQs

Specification Sheets

YSI Classic Water quality handhelds Specifications

Catalogs & Brochures

Aquaculture Applications, Capabilities & Solutions

Español - Piscicultura Aplicaciones, Competencia y Soluciones

Application Notes

Renowned Newport Aquarium Uses YSI Instruments to Maintain Water Quality

 

		5775 Standard DO Membranes YSI 5775 standard stretch-style dissolved oxygen membranes.