Product details
Eliminate Reagent Costs. 12-Month Payback.
The AquaMS LISA UV is a reagent-free optical COD sensor that measures Chemical Oxygen Demand continuously using UV light at 254nm (SAC254). No chemicals, no hazardous waste, no daily maintenance headaches.
The Cost Problem with Traditional COD Monitoring
A typical Australian wastewater plant running a reagent-based dichromate analyzer spends $1,000–$1,500/month on reagents alone — plus waste disposal, dangerous goods freight, and 6–8 hours of operator labor per week. Over 5 years, that’s $176,000 in total cost of ownership.
How the AquaMS LISA UV Works
The LISA UV emits UV light at 254nm through the water sample. Organic compounds absorb UV in proportion to their concentration — the sensor measures this absorption (SAC254) and calculates a COD equivalent value in 4 seconds. Dual LEDs at 254nm and 530nm provide automatic turbidity compensation for accurate results even in high-solids applications.
Key Specifications- Parameters: SAC254, CODeq, BODeq, TOCeq, UVT254, Turb530
- Response time: 4 seconds
- Accuracy: ±0.2%
- Calibration interval: 24 months
- Maintenance: ≤0.5 hours per month
- Power: 12–24VDC, ≤1W
- Materials: SS316 or Titanium
- Output: 4–20mA, Modbus RTU
5-Year Total Cost of Ownership
Optical sensor system (sensor + controller): $25,000 total vs $176,000 for reagent-based equivalent. Net saving: $147,000 over 5 years. Typical payback: 12 months. Remote sites with high freight costs: 8–10 months.
Ideal Applications- Municipal and industrial wastewater treatment plants
- Food and beverage trade waste monitoring
- Mine site discharge monitoring (Pilbara, Bowen Basin)
- Regional and remote Queensland / NT / WA sites
Australian Operating Conditions
Rated to 40°C operating temperature. SS316 or Titanium housing options for corrosive environments. Sub-1W power consumption ideal for solar-powered remote installations. 24-month calibration interval minimises site visit requirements.
Not sure if this is the right sensor for your application? We also supply the ABB UviTec and Xylem WTW IQ Sensor Net platforms. Contact our team for vendor-neutral advice on the best fit for your wastewater type, SCADA environment, and operating conditions.
Why InstroDirect vs Endress+Hauser or HACH in Australia
InstroDirect supplies the same grade of water-quality sensor that Australian councils, WWTP integrators, pharma plants, and food & beverage operators specify from Endress+Hauser and HACH — at a significantly lower landed cost and without vendor lock-in.
| Factor | InstroDirect | Endress+Hauser / HACH |
|---|---|---|
| Digital protocol | Open RS485 Modbus RTU — integrates with Allen-Bradley, Siemens, Schneider, Beckhoff, or any SCADA | Proprietary (E+H Memosens / HACH SC digital) — locked to the vendor’s transmitter |
| Technical support | Australian field engineers with 20+ years automation experience | Remote support via offshore ticket queues |
| On-site calibration | InstroDirect technicians available across QLD, NSW, VIC with formal calibration certificate | Third-party authorised service network, longer turnaround |
| Price | Parallel-import model — no distributor margin stack, typically 30–50% below equivalent brand pricing | Premium brand pricing with tiered distributor markup |
| Replacement parts | Standard consumables ordered on demand from InstroDirect | Proprietary cartridges and cells, tied to the brand |
Moving away from Memosens or SC digital protocols frees you to mix and match sensors with any Modbus-capable transmitter or PLC. InstroDirect probes drop straight into an existing control system without a new proprietary transmitter.
