Campbell Scientific offers both portable and stationary automatic water samplers for stormwater, wastewater or other water-quality applications. These samplers use external vacuum pumps to draw water through intake tubing, instead of the traditional peristaltic pumps that induce flow by squeezing flexible tubing.

The MBLT Miniature Submersible Level Transmitter, with a diameter of 15.87 mm, is suitable for level monitoring in well and borehole applications.

The Series TDFS thermal flow switch indicates whether the flow rate is above or below a user set flow rate with NO and NC NPN outputs.

The OBS500 submersible turbidity probe with active antifouling capabilities is suitable for improved measurements in biologically active water with both high and low turbidity.

The Series GWL guided wave radar transmitter for liquids is a level transmitter providing an analog and switching output (4-20 mA as well as a NC SPST switch output) to provide continuous level indication of liquids.

The Hydrosense II compact measurement system has a handheld display and soil moisture sensor and allows precise, three-dimensional representation of playing fields. It features an easy-insertion soil probe and a clear, large LCD with button layout that allows one-handed operation in the field.

The Series 629 differential pressure transmitter monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy.

The multiparameter controller mxControl 8620 is designed to automate the control of process variables within a water treatment system and reduces controller and instrument costs. The controller integrates all control, monitoring and display features as well as data and event logging functions into one compact unit.

The Series CFS2 cable float switch is a mechanically actuated floating switch intended to activate electrical components, usually pumps, to start and stop automatically.

The SG000 Strike Guard optical-coincidence lightning sensor detects cloud-to-cloud and cloud-to-ground lightning within a 30 km radius. To prevent false alarms, the system requires an optical signal to coincide with a magnetic-field-change signal before reporting lightning.