Application fit
For traced cooling-water programmes.
The ST-500 is designed for real-time PTSA measurement to support inhibitor-dose monitoring and control. Its optical design is intended to compensate for colour and turbidity interference in relevant sample-water conditions.
Before quotation, confirm tracer chemistry, operating conditions, installation point, controller/output requirement and any existing tee or sensor being replaced.
Technical data
Specifications
- Model / SKU
- ST-500 · 50661
- Measurement
- PTSA
- PTSA output scale
- 0–200 ppb
- Maximum configurable range
- Up to 0–300 ppb via uPyxis®; optional MA-WB/PowerPACK or MA-NEB setup and 24 VDC supply must be confirmed
- Precision / accuracy
- Confirm current model-specific revision before quotation; supplied Pyxis documents state different tolerance wording
- Interference envelope
- Compensation data qualified up to 150 NTU colour / 10 ppm iron
- Control limitation
- Heavy fouling can drive low readings and overfeed automated dosing; use cleaning and independent alarm/limit safeguards
- Optics
- LED 365 / 410 nm
- Outputs
- Isolated 4–20 mA analogue and isolated RS-485 digital · 7-pin
- Power
- 22–26 VDC · 1 W
- Installation
- ST-001 inline tee supplied · 3/4-inch FNPT
- Operational pressure
- Up to 100 psi / 6.9 bar
- Operational temperature
- 4–49 °C
- Material / rating
- CPVC · IP67
- Dimensions
- 172.7 mm L × 36.6 mm D
- Cable
- 5 ft, IP67 adapter + 1.5 ft flying lead
Technical data and the public product information are supplied with Pyxis permission. The user manual is not published here; contact HXST for configuration and installation guidance.
Configuration & support
What to discuss with HXST
Confirm pipework, tee configuration, access for cleaning and local electrical requirements.
Confirm analogue/digital signal requirements and controller, PLC or DCS compatibility.
Discuss cleaning, calibration materials and advanced support requirements for the application.