YSI™ Model 550A Dissolved Oxygen Meter

Rugged DO Meter designed for the field

Includes: Four C batteries, DO/temperature probe, cable; available with and without carrying case

Catalog Number	Mfr. No.	Includes	Length (English) Cable	Length (Metric) Cable
13-298-120	YSI™ 550A25	Meter, DO/temperature probe, 4 C Batteries, Cable	25 ft.
13-298-118	YSI™ 550A12	Meter, DO/temperature probe, 4 C Batteries, Cable	12 ft.

Description

• Accurate measurement of dissolved oxygen and temperature simultaneously
• Waterproof, impact-resistant case
• Innovative field-replaceable DO electrode with screw-on cap membranes
• Quick sinking, weighted probe
• Large easy-to-read backlit display
• Features calibration in % and mg/L, altitude and temperature compensation, and a low battery indicator

Order Info

Available with 12–, 25–, 50–, and 100 ft. cables. Replacement DO electrode sold separately. Dimensions: 9L x 4 3/4 x 2 1/2 in.H (23 x 12 x 6cm).

Certifications

CE marked CE compliant

Compliance

Meets IP67 requirements

Warranty and Services

Three-year warranty on instrument and one-year warranty on replaceable electrode

Specifications

• Accuracy (DO): 0 to 20mg/L, ±0.3mg/L or 2% of reading, whichever is greater, 20 to 50mg/L, ±6% of reading
• Battery Life: 2000 hr.
• Certifications/Compliance: CE, IP67
• IP Rating: IP-67
• For Use With (Application): DO, Temperature
• Length (English): 9 in.
• Range (DO): 0 to 50mg/L
• Resolution (Temperature): 0.1°C
• Saturation Resolution: 0.1% Air Saturation
• Warranty: 3 Years
• Weight (Metric): 0.91 kg
• Width (Metric): 12 cm

• Accuracy (Temperature): ±0.3°C
• Battery Type: C Alkaline
• Dimensions (L x W): 9 x 4.75 in. (23 x 12 cm)
• Sensor Types: Thermistor
• Height (English): 2.5 in.
• Length (Metric): 23 cm
• Resolution (DO): 0.01, 0.1mg/L
• Saturation Range: 0 to 500% Air Saturation
• Temperature (English) Range: 23°F to 113°F
• Weight (English): 2 lb.
• Width (English): 4.75 in.