Product Catalog
ST-730 Series Inline Turbidity Sensors

Configurations

Available analyzer or sensor options

Range: ST-730 (0–100NTU)

$1,838.00

53201

Inline Turbidity Sensor | 0–100NTU Range

Range: ST-730B (0–1,000NTU)

$1,838.00

53202

Inline Turbidity Sensor | 0–1,000NTU Range

Range: ST-731 (0–10NTU)

$1,838.00

50505

Inline Turbidity Sensor | 0–10NTU Range

Range: ST-735 (0–10,000NTU)

$1,838.00

53204

Inline Turbidity Sensor | 0–10,000NTU Range

Overview

What this product is built to monitor

The ST-730 Series of turbidity sensors are designed for a wide range of turbidity monitoring in various industrial and environmental water applications. Each device is configured with a specific scale for turbidity (NTU) detection while using Warm White Light and InfraRed with a 90º surface scatter optical channel configuration, ranging from as low as 1NTU to as high as 10,000NTU. The ST-730 Series offer a robust sensor platform design with a high tolerance to fouling, particulate and air bubble challenges compared to alternative turbidity meters. The ST-730 Series offer a combination of 4–20mA as well as RS-485 Modbus output signals and is Bluetooth® 5.0 enabled for wireless cleaning & calibration when used with the MA-WB or PowerPACK Series of Bluetooth® Adapters & the uPyxis® app. The ST-730 Series is provided in CPVC with the standard ST-001 inline 3/4inch FNPT tee assembly, 1.5m bulk-head cable with quick adapter, and a 1.5m flying lead cable with quick adapter for rapid wiring to any microprocessor, PLC or DCS system. The ST-730SS is offered in 304L stainless steel with 3/4inch FNPT ports for high pressure applications.

Typical Applications

  • Industrial Process Water
  • Fresh, Brackish, Sea Water
  • Cooling Water
  • Raw, Influent Water
  • Wastewater Effluent
  • Surface Water
  • Storm Water
  • Reverse Osmosis/ Desalination

Features

Reverse Osmosis & Desalination

Reverse Osmosis (RO) desalination is a cutting-edge water treatment process. It removes dissolved salts, minerals, and contaminants by forcing water through semi-permeable membranes under high pressure. Additionally, RO has become a critical solution for transforming seawater and brackish sources into usable water. Applications include municipal, industrial, and commercial grade systems.

Pyxis Lab delivers advanced inline sensor technology, smart analytics, and plug-and-play monitoring systems. Designed specifically for the challenges of RO desalination, our innovative solutions empower operators with real-time insights. In addition to reliable data to drive system efficiency, protect assets, and achieve superior water quality at every stage of the process.

Specifications

Key technical details

Item ST-730 ST-730B ST-731 ST-735 ST-730SS
Part Number 53201 53202 53505 53204 50626
Range (NTU) 0–100 0–1,000 0–10 0–10,000 0–100
Resolution (NTU) 0.1 NTU 1 NTU 0.05 NTU 10 NTU 0.1 NTU
Accuracy ±2% of Reading
Method Nephelometric Turbidity Units (NTU)
Light Source White White <100
Infrared >100		 White White <100
Infrared >100		 White
Light Format LED
Power Supply 22–26VDC, Power Consumption – 1W
Outputs Isolated – 4–20mA Analog, Isolated RS-485 Digital
Dimension 6.8in (172.7mm) L, 1.44in (36.6mm) D
Weight 170g (0.37lbs) 1,148g (2.5lb)
Installation ST-001 Tee with 3/4in FNPT 3/4in FNPT
Material UPVC 304SS
Pressure 100psi (6.9Bar) 290psi (20Bar)
Temperature Operation 40–120 °F (4–49 °C) Storage 20–150 °F (-6–66 °C)
Calibration Two-Point Calibration against Formazin Standard Solutions
Rating IP-66
Regulation CE / RoHS
Compliance US-EPA US-EPA <100
ISO >100		 US-EPA US-EPA <100
ISO >100		 US-EPA

Support

Manuals, data sheets and reference documents

PDF ST-730 Series User Manual Open support document PDF ST-730 Series Data Sheet Open support document PDF ST-730 Quick Start Guide Open support document PDF Reverse Osmosis & Desalination Open support document

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