CR-200 Corrosion Rate Probes

The popular ST-500 inline fluorometer is a robust and highly accurate tool for real-time monitoring of inhibitor dose. It is often used for feedback control to maintain dosed concentration within a narrow band around the set point, regardless of changes in cycle or heat load dynamics.

Now the ST-500 series includes expanded measurement targets for a broad range of analytes, including fluorescein and naphthenic disulfonic acid (NDSA), and brings its proven record of reliability to your traced cooling programs for boiler and other applications.

Thanks to its state-of-the-art fluorescence technology, the ST-500 Series handles a wide range of real-world sample water conditions. With its flow-through optical design and multiple wavelength color-turbidity compensation algorithm, the ST-500 probe maintains high performance for water samples with up to 100 NTU turbidity and/or 5 ppm iron.

The competitive probe comparison shown in the experiment below clearly demonstrates the superior performance of the ST-500 probe in the presence of iron color.

Typical Applications

• Traced cooling water treatment programs
• Traced boiler water treatment programs

Features

• Color and turbidity compensation for accurate readings, long-term stability, and less frequent calibration.
• Typical maintenance cycle in months, not weeks or days.
• Works with WiFi and Bluetooth adapters for one-press calibration with the SP-910, 700, and 400 tools, and for firmware upgrades via your smart phone.
• Isolated 4-20mA output: no need for additional transmitter for easy connection with PLC and DCS.

Specifications

PYXIS INLINE PROBES – SELECT*A*GUIDE
Functional Capability	ST500	ST500SS	ST500RO	ST525	ST525ss	ST540SS	ST565	EM500
PTSA (0-300ppb) For Cooling	●	●
PTSA (0-10ppb) For RO			●
Fluoroscein (0-60ppb) For Process				●
Fluoroscein (0-60ppb) For Boiler					●
NDSA (0-100ppb) For Boiler						●
HST (0-5ppm) For Cooling							●
Chlorophyll-a (0-1000ppb) For Cooling								●
Modbus RS 485 Output	●	●	●	●	●	●	●	●
Analog 4-20mA Output	●	●	●	●	●	●	●	●
MA-485WB Adapter Required For BlueTooth & Wifi Communication	●	●	●	●	●	●	●	●

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.

Typical Applications

• Industrial water treatment process control, including raw water, cooling water, and wastewater.
• Surface water monitoring.
• Other chemical processes with middle range of turbidity.

Features

• 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.

Specifications