ST-730 Series are designed for monitoring the middle range turbidity in various applications. It is more robust and tolerant to fouling, particular matters, and air bubbles comparing to other online turbidity meters designed for relatively clean water applications.
It also offers desired resolution and accuracy comparing to high turbidity or commonly referred to as suspended solid meters (4000 to 9999 NTU).
ST-730 series turbidity probe measures two optical densities and two scattering intensities at two wavelengths. This helps measure a large turbidity range and yet maintain a fine resolution. This design also helps the probe run self-diagnoses.
- Industrial water treatment process control, including raw water, cooling water, and wastewater.
- Surface water monitoring.
- Other chemical processes with middle range of turbidity.
- Dual-wavelength: white LED and IR LED 90° scattering to achieve more reliable and accurate reading in a complex flow system.
- A small footprint compact design, similar to an industrial pH probe.
- Isolated 4-20mA output. No need for additional transmitter for easy connection to PLC and DCS.
- Isolated RS-485 output embedded for easy trouble shooting and calibration.
ST-730 ST-731 ST-730B ST-735 Range 0~100 NTU 0-10 NTU 0~500 NTU 0~4,000 NTU Resolution 0.1 NTU 0.05 NTU 1 NTU 10 NTU Accuracy ±2% of reading or 1 NTU whichever is greater Method Nephelometric, with light sources of White LED and IR LED (860nm) Power Supply 22-26V DC, Power Consumption ~1W Outputs Isolated 4-20mA Analog Output
Isolated RS-485 Digital Output, Supporting MODBUS protocol
Dimension Length 6.8 inch, body diameter 1.44 inch Weight 0.37 pounds Installation Custom tee with 3/4” NPT ports Material CPVC Pressure Up to 100 psi Temperature Operation 40-120 °F, Storage 20~140 °F Cable Length 5 feet, terminated with IP67 connectors.
30 feet, 60 feet extension cables available
Calibration Two point calibration against standard solutions Rating IP66 Regulation CE markedSKU: n/a
Online Algae Detection Technology
Eliminates Color & Turbidity Interference!
EM 500 – Online Chlorophyll-a Detection
EM 400 – Handheld Chlorophyll-a Detection
EM 900 – Handheld Chlorophyll-a + Colorimeter
Measures Living Chlorophyll-a
Ideal For Algae Dynamic Measurement of System
For Alarming or Algaecide Dosing Automation
- Easy deployment
- Interference resistant
- Minimal maintenance
4-20mA & Modbus RS485 Connection
Wireless CalibrationSmart Phone or Pyxis SP Units
Probe fouling diagnostics through PCSKU: n/a
These pump housings and mounting brackets are made of cast aluminum or bronze alloy. The rotor is made of stainless steel with a hard chrome plate to improve the wear properties. The stator is manufactured from molded Nitrile. The mechanical seal is a carbon and ceramic mechanical rotating face type for a positive seal.SKU: n/a
9000 Precision Pressure Transducer
Specter’s Series 9000 is designed and manufactured to meet the highest quality standards. Each transducer’s output is digitally mapped to correct for any non-linearity or inaccuracies in the sensing element. This digital correction provides the most accurate and flexible pressure transducer in the industry.SKU: n/a