Multi-parameter probe for measurement of groundwater or surface water. This is a custom systems for quality assurance of groundwater samples known as Low Flow Sampling. The TROLL 9500 is available in different models with or without an integrated memory or logging capabilites. The models without the logger are primarily used for sampling or vertical profiling. The model that includes the logger can log data for longer depending on the parameters being measured. Sensors are available for level, temperature, pH / Redox, Conductivity, Oxygen, turbidity, etc.
Datasheet
Sensor overview