Dedicated sampling pumps and/or pressure transducers
Each monitoring port may be fitted with a dedicated sampling pump and/or pressure transducer. This maximizes the speed with which each data set can be obtained, and eliminates the need to decontaminate and repeatedly lower portable devices. The sampling pumps are suitable for sampling many types of contaminants, including VOCs (Volatile Organic Compounds).
Purge volumes are very small. With dedicated pumps all zones can be purged simultaneously. Ports with two stems allows a dedicated pump and a transducer to be placed at exactly the same level.
The most basic version uses open tubes attached to each port. This option allows monitoring with a portable sampler and a narrow diameter Water Level Meter. This provides a very economical and flexible multilevel monitoring device.
Mix of open tubes and dedicated equipment
A third option is to choose a mix of open tubes and dedicated equipment in different zones. This method combines the advantages of less expensive portable equipment for shallower zones and the more time efficient dedicated equipment for deeper zones.
Water level monitoring only
The Waterloo Multilevel System can comprise pressure transducers only, for pressure monitoring in up to 24 discrete zones.