CTD

The OTT CTD is an integrated datalogger and water level sensor designed for the continuous or real-time measuring of:

• Water Level (vented)
• Pressure (vented)
• Temperature
• Conductivity
• Salinity
• Total Dissolved Solids

The OTT CTD is suitable for:

• Groundwater wells.
• Streams, rivers, channels & canals.
• Reservoirs, lakes & wetlands.

Available measurement ranges include:

• 0m – 4m
• 0m – 10m
• 0m – 20m
• 0m – 40m
• 0m – 100m

The following Conductivity ranges are available:

• 0.001 – 2.000mS/cm
• 0.10 – 100mS/cm

• Complete in-well solution: all components are inserted into the groundwater well, eliminating the possibility of instrument vandalism.

• Ability to perform contact gauge control measurements without sensor removal, so no need to pull the cable for routine maintenance.

• Ceramic pressure cell provides industry-leading accuracy.

• Conductivity, depth, and temperature measurements are combined into a single device that easily installs in a 1” or larger well or conduit.

• 4 MB of memory provides capacity for over 500,000 data points—ideal for long-term deployments OR short-term, high resolution pumping studies.

• Can be powered for over 18 months with off-the-shelf alkaline batteries or over 5 years with lithium batteries.

This product is manufactured by OTT and proudly represented by Aqualab Scientific.

Outputs for conductivity include specific conductivity, salinity, and total dissolved solids
Ceramic pressure cell provides industry-leading accuracy
Conductivity, depth, and temperature measurements are combined into a single device that easily installs in a 1” or larger well or conduit
4 MB of memory provides capacity for over 500,000 data points—ideal for long-term deployments OR short-term, high resolution pumping studies
Can be powered for over 18 months with off-the-shelf alkaline batteries or over 5 years with lithium batteries
Ability to perform contact gauge control measurements without sensor removal, so no need to pull the cable for routine maintenance
Complete in-well solution: all components are inserted into the groundwater well, eliminating the possibility of instrument vandalism
Battery life: up to 5 years with lithium batteries, with alkaline options are also available.
Long-term accuracy: a robust ceramic pressure cell will not deform over time, and an accurate 4-electrode conductivity measuring cell provides outputs for salinity and total dissolved solids (TDS)
User-friendly interaction: only one program required to setup unit and download data, plus a simple infrared communication interface that provides easy on-site data download
Simple Maintenance: Infrared interface, batteries, and desiccant are accessible at the top of the well or pipe and no tools are required