Automatic Water Samplers

Automatic Water Samplers

Automatic water samplers are electromechanical systems that collect representative liquid samples from streams, channels, basins, or pressurized lines according to time, flow, or event logic. They automate discrete grab sampling or composite sampling routines and store samples in bottles or containers suitable for downstream laboratory analysis. This category includes stationary installations as well as portable field units for temporary monitoring campaigns.

The primary benefit is defensible representativeness with reduced labor and lower exposure to procedural variability. Automated sampling supports compliance programs by producing consistent sampling schedules, capturing transient events (storm surges, batch dumps, process upsets), and enabling sampling at hours or locations that are impractical manually. For industrial dischargers, it strengthens evidence chains for permitting and internal process accountability.

Sampler configurations can be matched to monitoring objectives. Stationary systems are commonly installed at influent/effluent points, lift stations, sewer networks, or river monitoring locations; portable systems are used for investigations, troubleshooting, and short-term studies. Cooling options preserve sample integrity for parameters sensitive to temperature and time, and modern designs include environmentally aligned cooling approaches (e.g., HFC‑free compressor concepts) to maintain storage conditions reliably.

Integration considerations typically include intake design (strainers, suction lines, purge cycles), flow measurement/totalization interfaces for flow-proportional sampling, and secure sample custody (sealed compartments, event logs). In Endress+Hauser portfolios, offerings span stationary Liquistation and portable Liquiport systems, plus accessories and sample preparation solutions that complement analyzer loops and monitoring panels.

Typical applications include municipal wastewater influent/effluent compliance sampling, industrial pretreatment verification, stormwater and combined sewer overflow monitoring, drinking water system verification, river and lake environmental surveillance, and process-water quality auditing. They are also used to supply representative samples to laboratory programs for metals, nutrients, COD/TOC, and other regulated parameters where chain-of-custody and timing matter.

Miller Mechanical Specialties, an exclusive authorized representative of sales and service for Endress+Hauser.