Pyxis ST-540SS-HR Inline Stainless Steel High Range NDSA Sensor
Stainless steel inline NDSA tracer sensor, high range (0-2,500ppb). 4-20mA + RS-485, 7-pin.
Pyxis ST-540SS-HR Inline Stainless Steel High Range NDSA Sensor
The Pyxis ST-540SS-HR 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 0-2,500ppb range and communicates via 4-20mA analog output and RS-485 Modbus through a 7-pin connector. Its stainless steel body is built for high-pressure process line installations.
Description
The Pyxis ST-540SS-HR is a high-range NDSA (naphthalene disulfonic acid) tracer sensor with a stainless steel body built for high-pressure process line installation. It supports boiler and process water treatment programmes using NDSA-tagged chemistries, extending the detection ceiling to a 0-2,500ppb range for higher-concentration treatment applications.
The stainless steel construction allows installation in demanding, high-pressure lines, while readings are communicated via a 4-20mA analog output and RS-485 Modbus, both wired through a 7-pin connector for integration with standard plant control systems.
This sensor suits treatment providers running higher-concentration NDSA-tagged chemistries on high-pressure boiler or process water systems who need continuous feed verification.
Why Use This
Continuous tracer monitoring
Measures naphthalene disulfonic acid (NDSA) tracer levels in real time across a 0-2,500ppb 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.
Built for high-pressure lines
The stainless steel housing withstands high-pressure process water service where standard sensor bodies would not be suitable.
Applications
- Higher-concentration NDSA treatment programs — extended range up to 2,500ppb
- High-pressure boiler and process water lines — stainless steel body for demanding service
- Treatment chemical feed verification — continuous inline monitoring of dosing performance
- Control system integration — 4-20mA and RS-485 Modbus outputs for PLC/SCADA feed
FAQ
What range does the ST-540SS-HR cover?
It measures NDSA tracer concentration across a 0-2,500ppb range, extending well beyond standard-range NDSA sensors.
Is it suited to high-pressure lines?
Yes, its stainless steel body is built for high-pressure process line service.
What treatment programs is it used with?
It is used in boiler and process water treatment programmes that rely on NDSA-tagged chemistries.
How does it connect to control equipment?
It outputs a 4-20mA analog signal and RS-485 Modbus data through a 7-pin connector.
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