ENVIRONMENTAL SAMPLING EQUIPMENT

YSI ProSwap Logger submersible monitoring sonde
YSI ProSwap Logger with handheld communication
YSI ProSwap Logger continuous monitoring deployment
YSI ProSwap Logger long-term monitoring sonde
YSI ProSwap Logger water quality monitoring
YSI ProSwap Logger submersible monitoring sonde
YSI ProSwap Logger with handheld communication
YSI ProSwap Logger continuous monitoring deployment
YSI ProSwap Logger long-term monitoring sonde
YSI ProSwap Logger water quality monitoring

YSI ProSwap Logger — With Internal Li-ion Battery

The YSI ProSwap Logger is a slim, single-port submersible monitoring sonde with built-in temperature and depth sensors — ideal for continuous, unattended deployments in groundwater wells, deployment pipes, streams, and shallow spaces. The internal Li-ion battery version delivers at least 90 days of autonomous logging at a 15-minute interval with no external power needed, making it the right choice for remote sites.

Add any single ProDSS Digital Smart Sensor (sold separately) to measure a second parameter alongside built-in temperature and depth. Compatible sensors include conductivity/temperature, optical DO, pH, pH/ORP, turbidity, algae, ammonium, nitrate, and chloride.

Note: Turbidity and Total Algae sensors require the Extended Guard Kit (626740, sold separately). CT, DO, pH, and ISE sensors use the standard Short Guard Kit included with the logger.

Compatible ProDSS Smart Sensors (one required, sold separately — shop them directly in YSI ProSwap Sensors):

Sensor Part # Price
ODO Optical Dissolved Oxygen Sensor 626900 $1,167.48
Conductivity & Temperature Sensor 626902 $821.56
Turbidity Sensor † 626901 $1,284.32
pH Sensor with Module 626903 $524.40
pH/ORP Sensor with Module 626904 $666.08
Ammonium Sensor with Module 626906 $666.08
Nitrate Sensor with Module 626905 $710.24
Chloride Sensor with Module 626907 $710.24
Total Algae-Phycocyanin Sensor (Fresh Water) † 626210 $3,722.32
Total Algae-Phycoerythrin Sensor (Salt Water) † 626211 $3,722.32

† Requires Extended Guard Kit (626740) — sold separately.


  • Slim, single-port submersible sonde with built-in temperature and depth sensors
  • Internal Li-ion battery delivers at least 90 days of autonomous logging at 15-minute intervals
  • Accepts any single ProDSS Digital Smart Sensor for a second parameter
  • Compatible with CT, DO, pH, pH/ORP, turbidity, algae, ammonium, nitrate, and chloride sensors
  • Standard Short Guard Kit included; Extended Guard Kit required for turbidity/algae sensors
  • No external power needed for remote, unattended sites
  • Unattended groundwater well monitoring
  • Continuous stream and shallow-water logging
  • Remote site deployment without external power
  • Deployment-pipe water level and quality logging
  • Long-term environmental data collection
  • Aquaculture and stormwater continuous monitoring
$3,088.00
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