Pyxis ST-540-A Inline NDSA Sensor
Inline NDSA tracer sensor (0-500ppb). 4-20mA + RS-485, 7-pin.
Pyxis ST-540-A Inline NDSA Sensor
The Pyxis ST-540-A is an inline sensor that measures naphthalene disulfonic acid (NDSA) tracer levels, supporting boiler and process water treatment programmes using NDSA-tagged chemistries. It reports concentration across a 0-500ppb range and communicates via 4-20mA analog output and RS-485 Modbus through a 7-pin connector.
Description
The Pyxis ST-540-A is an inline sensor that tracks naphthalene disulfonic acid (NDSA) tracer levels, supporting boiler and process water treatment programmes that use NDSA-tagged chemistries. Continuous inline measurement gives operators real-time confirmation that NDSA-tagged treatment chemical feed is dosing correctly, rather than relying on grab samples.
It reports concentration across a 0-500ppb range and communicates through a 4-20mA analog output and RS-485 Modbus digital signal, both wired through a 7-pin connector for integration with plant control and monitoring systems.
This sensor is intended for treatment providers and plant operators running NDSA-tagged boiler or process water treatment programs who need continuous, automated feed verification.
Why Use This
Continuous tracer monitoring
Measures naphthalene disulfonic acid (NDSA) tracer levels in real time across a 0-500ppb range, giving operators direct visibility into treatment chemical performance.
Easy control system integration
Dual 4-20mA analog and RS-485 Modbus outputs through a 7-pin connector let the sensor feed data straight into existing SCADA or controller setups.
Applications
- Boiler water treatment programs — tracks NDSA-tagged treatment chemistries
- Process water treatment monitoring — continuous inline verification of chemical feed
- Treatment chemical feed control — real-time data for dosing adjustment
- Control system integration — 4-20mA and RS-485 Modbus outputs for PLC/SCADA
FAQ
What does the ST-540-A measure?
It measures naphthalene disulfonic acid (NDSA) tracer concentration used in boiler and process water treatment programmes with NDSA-tagged chemistries.
What is its measurement range?
It reports NDSA tracer levels across a 0-500ppb range.
How is it installed?
It is an inline sensor that mounts directly into the process water line for continuous monitoring.
How does it connect to a control system?
It communicates via 4-20mA analog output and RS-485 Modbus through a 7-pin connector.
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