The YSI 6920 is an economical logging system for long-term, in situ monitoring and profiling. It will log all parameters at programmable intervals and store 150,000 readings. At 15-minute intervals, it will log data for about 30 days.

Battery cells in a sealed compartment provide up to 3-months deployment (depending upon number of parameters). Non-volatile flash memory (384K) prevents data loss. RS-232 and SDI-12 are standard; the unit interfaces with the YSI 6200 Data Acquisition System, your own data collection platform, or a YSI 650 Multiparameter Display System for long-term deployment. Retrieve data on site or remotely via radio, phone, or satellite.

All the YSI 6-Series sondes can be used with YSI EcoWatch for Windows software. EcoWatch is communication and data processing software that is fast and easy-to-use. See the whole picture with a single program, obtain statistics easily, merge data files, and run large studies.

FEATURES
On-board memory and power
Measures all parameters simultaneously
Log to depths of 200 feet
Memory holds 150,000 readings
Field-replaceable probes
3 ISE's, ammonia, nitrate and chloride simultaneously, plus
pH and ORP
CE compliant

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RS-232 and SDI-12 are standard; the YSI 6820 easily interfaces with a YSI 6200 Data Acquisition System, many other data collection platforms for long-term deployment, or a YSI 650 Multiparameter Display System for sampling.

All YSI 6-Series sondes can be used with YSI EcoWatch for Windows software. EcoWatch is communication and data processing software that is fast and easy-to-use. See the whole picture with a single program, obtain statistics easily, merge data files, and run large studies.

FEATURES
Ideal for sampling
Easy connection to the YSI 650 Handheld Multiparameter
Display System or YSI 6200 Data Collection Platform
Field-replaceable probes
CE compliant Retrieve data on-site or remotely via radio, phone or satellite

Rapid PulseTM stirring-independent dissolved oxygen
measurement
ORP, pH and industry-leading specifications for
conductivity and temperature are measured simultaneously
with dissolved oxygen.
All probes are field-replaceable. This combination makes
the compact YSI 600XL your best choice for water quality monitoring with a data collection platform where water level is critical.
Connect the YSI 600XL easily to the YSI 6200 Data Acquisition System, the YSI 6500 Environmental Process Monitor, or the YSI 650 Multiparameter Display System.

All the YSI 6-Series sondes can be used with YSI EcoWatch for Windows software. EcoWatch is communication and data processing software that is fast and easy-to-use. See the whole picture with a single program, obtain statistics easily, merge data files, and run large studies.

FEATURES
Small, compact instrument easily fits into 2-inch wells
Salinity and total dissolved solids are also calculated
parameters
Stirring-independent Rapid Pulse oxygen sensor saves
energy
Measures to depths of 200 feet (61m)
CE compliant

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The YSI 600XLM will log all parameters at programmable intervals and stores 150,000 readings. At 15-minute intervals, it will log data for about 30 days.

All the YSI 6-Series sondes can be used with YSI EcoWatch for Windows software. EcoWatch is communication and data processing software that is fast and easy-to-use. See the whole picture with a single program, obtain statistics easily, merge data files, and run large studies.

FEATURES
Measures dissolved oxygen, conductivity, temperature, pH, ORP and vented level or depth
Logs all parameters at programmable intervals and stores
150,000 readings
Logs data for about 30 days at 15-minute intervals
Probes are field-replaceable
Salinity and total dissolved solids are also calculated
parameters
Stirring-independent dissolved oxygen sensor
Measures to depths of 200 feet
Easy-to-change internal batteries
CE compliant

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SIMULTANEOUS MEASUREMENT OF 10 PARAMETERS:

pH
Dissolved Oxygen
Conductivity
Salinity
Total Dissolved Solids
Seawater Specific Gravity
Temperature
Turbidity
Depth
Oxidation Reduction Potential
FEATURES
One Touch Calibration – Just submerge the probe into the
calibration beaker filled with standard solution and press the button for simultaneous one-point calibration. The system also enables two-point calibration where high precision measurement data is required.
Probe assembly fits inside 2-inch well (U-22 only)
Data Logging Capability – The sensor’s built in memory
function enables continuous measurement for as long as one month (with measurements every 15 minutes).
Simultaneous Measurement of up to 13 Parameters – 10
parameters with U-22 Model and 13 parameters with U-23 Model.
Measurement at Depths up to 100 Meters
High-Precision Dissolved Oxygen Sensor – This quick
response sensor requires no stirring.
System Enables GPS, PC, and Printer Capabilities

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[VIEW PRODUCT SPECIFICATIONS,PDF]

Two upgrades enhance performance even further. One option offers fast PC download capability. The other option also adds a technology breakthrough turbidity sensor in addition to pH, ORP, DO, temperature, and conductivity.

The lightweight, waterproof MP20 meter is simple to field calibrate. It displays all readings automatically. The sonde is a compact, low-profile design with rugged, easy-to-service probes. The flow cell is designed to collect and vent gas bubbles effectively, and to distribute purge flow evenly for quick measurement response and more accurate readings.

The whole package is protected by a 3-year warranty, backed by service and support from QED, the leader in low-flow sampling.

QED PurgeScanTM technology assures stabilization
Successful, consistent low-flow sampling is based on knowing when purge water indicator parameters stabilize. This allows sampling to begin only when the pump discharges samples representative of the formation water.

Until now, deciding when stabilization had been achieved was complex, requiring you to monitor multiple parameters and make repeated calculations. The MP20 Flow Cell simplifies this process. Microprocessor-based PurgeScanTM technology performs the monitoring and calculation, clearly signaling when stabilization has occurred.

This makes low-flow sampling easy. You can do it the right way, collecting the most accurate samples, and saving time and money.

Engineered for performance and field readiness
The MP20 flow cell is engineered to allow the probe to make rapid, accurate responses to changes in purge water parameters. The flow cell is 100% transparent for observation. The low-volume, fast-response cell couples to the sonde with a quick, bayonet attachment, and can be used in either a horizontal or vertical position.

The incoming flow is directed in a tangential path around the flow cell to provide fast, thorough mixing with no "dead spots" that could affect the accuracy of purge parameter measurements. Bubbles in the flow stream are vented out of the cell and away from the probe so they don't interfere with purge water analysis.

The multiparameter probe has a special sensor with built-in stirring for highly stable dissolved oxygen readings. All sensors are easy to calibrate and the reference electrode is fully field-serviceable.

The large display screen makes it easy to see your purging status. Power by standard C cells keeps you on top of the job all day with no energy supply worries.

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