YSI 6150 ROX Dissolved Oxygen Sensor
- Utilizes luminescence lifetime detection of oxygen to provide the most stable measurements possible
- Microprocessor-controlled measurement system reduces drift and improves accuracy
- Easy to replace, durable membrane with a usable life of one year
|606150||6150 ROX optical dissolved oxygen sensor with self-cleaning wiper|| |
|Usually ships in 3-5 days|
|606144||6144 optical probe wiper pad kit, 20 pack of wiper pad strips|
|606155||6155 optical DO membrane kit|
|606625||6625 optical wiper kit, 2 pack, for use with YSI 6150, 6136, 6131, & 6132 optical probes|
|600-01||600OMS V2 Sonde with temperature/conductivity sensor|| |
|Usually ships in 3-5 days|
The ROX optical sensor uses an integrated wiping system to provide anti-fouling in the most hostile environments. Durable mechanical features include a non-corroding titanium wiper shaft, replaceable wiper shaft seal, and a new switch controlled wiper parking system to prevent mis-parking.
The ROX sensing system is based on the luminescence lifetime method. This method was chosen because it offers the most stable, repeatable and sensitive method for oxygen detection, thus reducing sensor drift and prolonging deployment times.
YSI's optical DO membrane differs from the traditional electrochemical sensor membrane, requiring fewer steps for installation and less maintenance. ROX membranes will last for one year and are made of a durable material that is unlikely to be damaged in the field. The ROX sensor eliminates stirring dependency that was required of most traditional polarographic sensors.
- Range: 0 to 500%; 0 to 50 mg/L
- Resolution: 0.1%; 0.01 mg/L
- Accuracy (0 to 200%): +/-1% of reading or 1% air saturation, whichever is greater
- Accuracy (200 to 500%): +/-15% of reading
- Accuracy (0 to 20 mg/L): +/-0.1 mg/L or 1% of reading, whichever is greater
- Accuracy (20 to 50 mg/L): +/-15% of reading
- Warranty: 2 years
The 6150 ROX works with 6-series sondes (6600EDS, 600OMS, 6600, 6600V2, 6920V2, 6820, 6820V2, 6920)
The sensor outputs 0-500% saturation or 0-50 mg/L.
The sensor membrane should be replaced every year.
When you notice the black film flaking or start getting unstable readings, the membrane should be replaced. YSI recommends replacing the membrane yearly, but this recommendation also depends on usage. Replacement membranes can be purchased from Fondriest Environmental. (Part number: 606155)
The ROX sensor has zero flow dependence, a maintenance-free and puncture-proof membrane, and a zero cal option. It also is insensitive to H2S, has no electrolyte and can self-clean for longer deployments.
The Optical Sensor does not have an electrode to polarize therefore it does not have a warm-up time. The sensor can be turned on, calibrated, and used immediately after.
In The News
A Virginia Institute of Marine Sciences study found that near-bottom fish in the Chesapeake Bay tend to move out of areas nearing hypoxia, according to a VIMS release.
The study, which has spanned 10 years, found that biomass decreased in the middle of the Chesapeake Bay during mid-summer. That part of the bay typically experiences hypoxia due to algal blooms fed from nutrient runoff.
A total of 48 sampling trips from 2002 through 2011 have shown that, when dissolved oxygen concentrations dip below 4 milligrams per liter, many near bottom fish leave the area.
Analysis was limited to demersal, near bottom, fish and the same trends were not confirmed for fish higher in the water column.Read More
Officials at the Mississippi Department of Marine Resources say that a recent fish kill along the state’s Gulf coast is the largest they’ve seen, according to KVUE . The fish kill has brought dead crabs, eels and stingrays ashore.
Beachgoers were disturbed by the large-scale kill, but experts explained that conditions this year were to blame. With higher temperatures and low dissolved oxygen near the sea floor, creatures that live there were more likely to be affected.
The fish kill, beginning July 1, was the first of 2013 for the area. It was expected to last several more days, but lessen over that period.Read More
It’s an open, dirty secret that the ocean is used as the ultimate sewage solution.
Each year trillions of gallons of untreated waste are sent to the ocean due to a widespread lack of sanitation technology or infrastructure that needs updating as cities and populations grow. As the impact of untreated sewage on the ocean becomes clearer, attention to the problem and strategies for dealing with it have not kept up.
“This is a massive problem and it’s been largely ignored,” said Stephanie Wear, senior scientist and strategy advisor for The Nature Conservancy. Wear has turned her attention to raising the alarm about the effects of sewage on coral reefs, which often loses airtime to other pressing issues like climate change and overfishing.Read More