16 parameters across three specialist brands — Pyxis, Lecol and Alvim — for continuous, real-time water quality and process monitoring installed directly in your pipeline or tank.
The backbone of the range, built on two core detection technologies. Its LED UV fluorescence platform underlies most of the specialty cooling-water sensors — PTSA, azole, tagged polymer, fluorescein, algae and oil-in-water all work by exciting a fluorescent signature and reading its response. For chlorine and other oxidizers, Pyxis instead uses a bare-gold electrochemical detection platform — a membrane-less, reagent-free design built to avoid the drift and upkeep of traditional amperometric or DPD methods.
LED UV fluorescence — tracer and biomass detection (PTSA, azole, polymer, algae, oil-in-water)
Bare-gold electrochemical platform — membrane-less, reagent-free oxidizer and chlorine sensing
uPyxis® connectivity — 4-20mA, RS-485 Modbus and Bluetooth diagnostics across the range
Specializes in conductivity and pH/ORP sensors built around two patented reference-electrode technologies, developed to solve the reference-cell failures that plague conventional probes in power-plant steam-water and harsh chemical service.
Ion Barrier — solid-state reference electrode that blocks chemical intrusion and extends sensor life
Hydrionis™ — high-stability reference system that maintains consistent ion activity for precise pH readings in low-conductivity, ultrapure water
Two- and four-electrode design — contacting conductivity sensors for low to high-conductivity streams
Brings a single, purpose-built biofilm sensor that measures bacterial surface coverage in real time — catching biofilm formation before it becomes a Legionella, corrosion, or heat-exchanger efficiency problem, and before it is visible.
Electrochemical biofilm sensing — titanium working electrode measures 1–100% of surface covered by biofilm
Early-warning monitoring — detects bacterial growth before it is visible, so biocide dosing can respond in time
4-20mA and RS-485 Modbus output — integrates directly into existing control and monitoring systems

ST-720 / ST-726 (Pyxis) · LE-Series 2- & 4-electrode sensors (Lecol)
High-range inline conductivity sensing for process and cooling water, or precision two- and four-electrode sensors engineered for ultrapure and high-purity streams.

ST-710 Series (Pyxis) · B64 / B65 Ion Barrier + Hydrionis (Lecol)
Embedded-transmitter pH/ORP sensing for industrial and wastewater duty, or patented solid-state reference electrodes built for ultrapure water and harsh chemical service.

ST-600 / ST-604–607, ST-765SS Series, SP-600
Bare-gold electrochemical and optical sensors for free/total chlorine, chlorine dioxide, bromine, chloramine, ozone, H2O2 and PAA — membrane-less and reagent-free.

ST-500 Series
LED UV fluorescence sensor for direct PTSA tracer measurement, with built-in turbidity and color compensation for cooling water treatment programs.

ST-730 / ST-731, ST-730SS-T, LT-63X, LT-73X
Optical scatter turbidity sensors from 1 NTU to 10,000 NTU, engineered to resist fouling, particulates and air bubbles.

LT-635
Submersible, self-cleaning infrared sensor for suspended solids in municipal and industrial wastewater.

ST-772 / ST-773 / ST-774
Luminescent (fluorescence quenching) dissolved oxygen sensors with temperature and pressure compensation, down to ultra-low detection limits.

CR-200 / CR-300
Wireless and inline LPR corrosion rate sensors for real-time electrochemical corrosion measurement, in place of corrosion coupons.

EM-500
LED UV fluorescence sensor measuring in-vivo chlorophyll-a concentration for real-time detection of living algal biomass.

HM-500 Series
UV-fluorescence sensor reading ppm crude-oil equivalent, with automatic color and turbidity compensation.

ST-525SS-T
Stainless-steel inline sensor for fluorescein tracer concentration, used to verify treatment dosing and system hydraulics.

ST-565 Series
LED UV fluorescence sensor for direct measurement of HST/TTA corrosion inhibitor residual in cooling water programs.

ST-590
Fluorescent-tagged scale inhibitor polymer sensor, usable standalone or alongside the ST-500 PTSA sensor.

A001S3
Real-time biofilm growth sensor measuring 1–100% surface coverage, for early detection of bacterial growth and Legionella risk ahead of visible fouling.

ST-800
Reagent-free UV-visible spectrometry probe for nitrate and organic load monitoring, with automated brush and air-blow self-cleaning.

HW-201, HW-200S
Inline sugar/thin juice concentration sensor for sugar mill and food process monitoring.
Our engineers can help you select across Pyxis, Lecol and Alvim for your specific monitoring application.