Pyxis Oil In Water Sensor

HM-500 Oil in Water Sensor

Accurate. Reliable. Built for real-world conditions.

The HM-500 Oil in Water Sensor is designed to deliver precise oil concentration measurement in challenging water environments. Using advanced UV fluorescence technology at 365 nm, it provides accurate readings across a 0–10 ppm range – even in the presence of colour and turbidity.

Unlike conventional sensors, the HM-500 automatically compensates for interference (up to 150 NTU), ensuring consistent performance where other instruments struggle.

Practical Benefits

  • Reduce maintenance time
  • Improve measurement confidence
  • Minimise downtime
  • Ensure compliance with discharge limits

Typical Applications

The HM-500 is ideal for a wide range of industrial and water treatment applications, including:

  • Heat exchanger leak detection
  • Oil tank leakage detection
  • Intake water monitoring (UF & RO feedwater)
  • Reinjection water monitoring
  • Industrial wastewater monitoring
  • Marine discharge monitoring
  • Plant runoff and stormwater monitoring

Ready for Integration

The HM-500 is built for reliable, continuous operation and integrates easily into existing monitoring and control systems – delivering dependable, real-time oil-in-water measurement where it matters most.

Why Choose the HM-500?

✔ True oil-in-water measurement
Advanced UV fluorescence technology with enhanced photo-electric design for high accuracy.

✔ Handles real-world water conditions
Automatic compensation for colour and turbidity – no guesswork, no drift.

✔ Low maintenance design
Short fluidic channel allows for quick and easy cleaning, reducing fouling and downtime.

✔ Flexible installation options
Supplied with a 3/4″ FNPT CPVC inline tee assembly, with optional 304 stainless steel variant for harsh applications. A submersion kit is also available for open tank installations.

✔ Seamless integration
4–20 mA and RS-485 outputs allow easy connection to controllers, PLCs, and DCS systems.

✔ Smart wireless diagnostics
With the MA-WB Bluetooth® Adapter or PowerPACK:

  • Monitor performance
  • Calibrate and configure the sensor
  • Check cleanliness in real time via the uPyxis® app
  • Apply calibration for specific oil types in ppm

✔ Cost-effective performance
Lower cost and higher accuracy compared to conventional UV fluorometers.