Flow proportional sampling
Accurate wastewater monitoring with flow proportional sampling
Flow proportional sampling is one of the most reliable methods for collecting representative wastewater samples. Instead of taking samples at fixed time intervals, the sampling frequency is automatically adjusted to the wastewater flow. This ensures that the final sample accurately reflects the total discharge over the monitoring period.
TEC42 offers advanced flow proportional sampling solutions that improve monitoring accuracy. In a Samptec sampler equipped with a Siemens PLC and HMI, for example, you can set different flow intervals per production day. This makes it easier to set up your sampler for both high-flow and low-flow production moments, so you can optimize wastewater management and comply with environmental regulations.
What is flow proportional sampling?
Flow proportional sampling automatically collects sample volumes based on the amount of wastewater flowing through the system. When the flow increases, more samples are collected. During lower flow conditions, the sampling frequency decreases accordingly. This approach provides a much more representative composite sample than traditional time-based sampling, especially where wastewater flow varies throughout the day. Flow proportional sampling is commonly applied in:
- Industrial wastewater treatment
- Municipal sewer systems
- Wastewater treatment plants
- Environmental monitoring programmes
Why use flow proportional sampling?
Many industrial processes generate variable wastewater flows depending on production schedules, cleaning cycles or weather conditions. Time-based sampling may not accurately represent these fluctuations. Flow proportional sampling offers several important benefits:
- More representative wastewater samples
- Improved laboratory accuracy
- Better compliance with discharge permits
Because the sample reflects the actual wastewater volume, laboratory results provide a more reliable basis for operational decisions and regulatory reporting.
Reliable monitoring with TEC42
Built into every Samptec sampler
TEC42 integrates flow proportional sampling into its advanced Samptec® wastewater samplers. Our systems combine accurate flow measurement with intelligent sampling technology to deliver dependable monitoring under demanding conditions. Designed for industrial and municipal applications, TEC42 solutions provide reliable performance, low maintenance and long-term operational stability.
Whether your organization needs continuous compliance monitoring or detailed process analysis, flow proportional sampling offers one of the most accurate methods available for wastewater monitoring.
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