550A

The YSI 550A Handheld Dissolved Oxygen Instrument is a microprocessor based, digital instrument with a field-replaceable YSI dissolved oxygen probe. The YSI 550A DO Instrument is impact-resistant and waterproof. It is designed for field use and is available with cable lengths of 12, 25, 50, or 100 feet (3.5, 7.5, 15, 30.5 meters). The body of the probe has been manufactured with stainless steel to add rugged durability and sinking weight.

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Availability: Commercially Available

environmental@ysi.com
+1 937 767 7241
1700/1725 Brannum Lane
Yellow Springs, OH 45387
USA
www.ysi.com
Manufacturer
YSI, Inc.
Product Name
550A
Detection Category
Chemical
Detection Principle
Sensors;
Detection Method
Water Quality;
Application
Water Quality;
Equipment Type
Sensor
Product Synopsis
The YSI 550A Handheld Dissolved Oxygen Instrument is a microprocessor based, digital instrument with a field-replaceable YSI dissolved oxygen probe. The YSI 550A DO Instrument is impact-resistant and waterproof. It is designed for field use and is available with cable lengths of 12, 25, 50, or 100 feet (3.5, 7.5, 15, 30.5 meters). The body of the probe has been manufactured with stainless steel to add rugged durability and sinking weight.
Availability
Commercially Available
Technology Readiness Level (TRL)
9
Dimensions
4.7 x 9 in (120 x 229 mm)
Weight
2 lbs (0.91 kg)
Power Requirements
4 alkaline C-cells
Transportability
Pocket Size
Durability
IP-67, High Impact Resistance
Consumables
Sensors, membrane kits (every 8 wks), DO module and battery
Calibration Schedule
Yes
Suggested Routine Maintenance
May require replacement of DO electrodes
Data Analysis Support Equipment
See MFR website or Product manual for list of accessories
Shelf Life
3 Months
Unit Cost
$900.00
Maintenance Cost
Membrane kits $56
Other Chemical Targets
Measures dissolved oxygen
Sample Introduction
Liquid
Known Interferents/Inhibitors
Chlorine, sulfur dioxide, nitric oxide, and nitrous oxide can affect readings by behaving like oxygen at the probe.
Start Up Time (From Cold Start To Sample Ready)
5 – 15 minutes
Response Time (Sample Application To Output)
9 seconds
Other Operational Parameters
0 to 500% air saturation - dissolved oxygen % 0 to 50 mg/L - oxygen -5 to 55°C - temperature 400 to 999.9 mmHg - barometric
Operator Skills Required
Technician
Manuals Available
Yes
Warranties
3 year instrument, 1 year DO module
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