Control Technologies
Inline Sensors
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.
Three Specialist Brands
One Inline Sensor Portfolio, Three Different Areas of Expertise
Broadest Parameter Coverage
Pyxis
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
Precision Conductivity & pH
Lecol
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
Real-Time Biofilm Detection
Alvim
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
16
Parameters Monitored
3
Brands: Pyxis, Lecol, Alvim
Conductivity
pH & ORP
Chlorine & Oxidizers
PTSA
Turbidity
Suspended Solids
Dissolved Oxygen
Corrosion Rate
Algae
Oil in Water
Fluorescein
Azole
Tagged Polymer
Biofilm
Nitrate / COD / TOC / BOD
Sugar & Brix
Browse by Parameter
All Parameters
16 Parameters
All
Pyxis
Lecol
Alvim
Pyxis · Lecol
Conductivity
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.
View Sensors →
Pyxis · Lecol
pH & ORP
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.
View Sensors →
Pyxis
Chlorine & Oxidizers
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.
View Sensors →
Pyxis
PTSA
ST-500 Series
LED UV fluorescence sensor for direct PTSA tracer measurement, with built-in turbidity and color compensation for cooling water treatment programs.
View Sensors →
Pyxis
Turbidity
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.
View Sensors →
Pyxis
Suspended Solids
LT-635
Submersible, self-cleaning infrared sensor for suspended solids in municipal and industrial wastewater.
View Sensors →
Pyxis
Dissolved Oxygen
ST-772 / ST-773 / ST-774
Luminescent (fluorescence quenching) dissolved oxygen sensors with temperature and pressure compensation, down to ultra-low detection limits.
View Sensors →
Pyxis
Corrosion Rate
CR-200 / CR-300
Wireless and inline LPR corrosion rate sensors for real-time electrochemical corrosion measurement, in place of corrosion coupons.
View Sensors →
Pyxis
Algae
EM-500
LED UV fluorescence sensor measuring in-vivo chlorophyll-a concentration for real-time detection of living algal biomass.
View Sensors →
Pyxis
Oil in Water
HM-500 Series
UV-fluorescence sensor reading ppm crude-oil equivalent, with automatic color and turbidity compensation.
View Sensors →
Pyxis
Fluorescein
ST-525SS-T
Stainless-steel inline sensor for fluorescein tracer concentration, used to verify treatment dosing and system hydraulics.
View Sensors →
Pyxis
Azole
ST-565 Series
LED UV fluorescence sensor for direct measurement of HST/TTA corrosion inhibitor residual in cooling water programs.
View Sensors →
Pyxis
Tagged Polymer
ST-590
Fluorescent-tagged scale inhibitor polymer sensor, usable standalone or alongside the ST-500 PTSA sensor.
View Sensors →
Alvim
Biofilm
A001S3
Real-time biofilm growth sensor measuring 1–100% surface coverage, for early detection of bacterial growth and Legionella risk ahead of visible fouling.
View Sensors →
Pyxis
Nitrate / COD / TOC / BOD
ST-800
Reagent-free UV-visible spectrometry probe for nitrate and organic load monitoring, with automated brush and air-blow self-cleaning.
View Sensors →
Pyxis
Sugar & Brix
HW-201, HW-200S
Inline sugar/thin juice concentration sensor for sugar mill and food process monitoring.
View Sensors →
Not Sure Which Sensor You Need?
Let's match the right sensor to your process.
Our engineers can help you select across Pyxis, Lecol and Alvim for your specific monitoring application.