Online Turbidity Meter

Online turbidity meters continuously measure the cloudiness of water caused by suspended particles. They provide real-time water clarity data for drinking water treatment, wastewater discharge compliance, and industrial process control. Furthermore, they eliminate manual sample collection and laboratory analysis between measurements.

Turbidity measurement quantifies light scattering by suspended particles. Nephelometric meters direct a light beam through the sample. They measure scattered light intensity at 90 degrees to the beam path. This method detects low turbidity levels accurately. Furthermore, it forms the basis of ISO 7027 and USEPA Method 180.1 standards. Results express in NTU or FNU depending on the light source used. Additionally, LED light sources at 860nm near-infrared wavelength eliminate interference from sample color. As a result, they measure true particle scatter without color absorption errors in colored industrial wastewater streams.

Measurement ranges cover 0 to 4,000 NTU on standard process instruments. High-range variants extend to 9,999 NTU for raw water inlet monitoring at treatment plants. Low-range instruments covering 0 to 100 NTU suit drinking water final effluent monitoring. Moreover, dual-range instruments switch automatically between ranges based on sample turbidity. This maintains accuracy across the full dynamic range without manual range selection.

Submerged probe designs insert directly into open channels, tanks, and rivers. They reduce installation complexity and fouling risk from suspended solids. Self-cleaning wiper mechanisms sweep optical windows at programmable intervals. This maintains measurement accuracy between scheduled maintenance visits.

Output interfaces include 4–20mA analog, Modbus RTU, and HART digital communication. These connect directly to SCADA systems, PLC-controlled coagulant dosing systems, and environmental monitoring platforms.

These meters serve WASA water treatment plants in Lahore, Karachi, and Faisalabad, WAPDA reservoir monitoring programs, textile and pharmaceutical wastewater compliance operations, and Pakistan Environmental Protection Agency water quality monitoring networks.

Tactical Supply Pakistan supplies online turbidity meters for drinking water treatment, industrial process monitoring, and wastewater compliance procurement across Pakistan.