New SMR12 Suspended Solids Density Analyzer View larger

SMR12 Suspended Solids Density Analyzer


Aquas Inc.


Suspended Solids Density Analyzer is connected directly via RS485 communication interface, providing simple, reliable, cost- saving process data with remote monitoring, calibration, configuration and diagnostics capabilities.

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The Sensor measures: TDS
Output Signal: RS485
Sensor IP Rating IP68

- Robust IP68 Water Submersible Enclosure, Solution Without Cabinet
- On-line Realtime Measurement
- Ultra Low Power Consumption, Ideal for Outdoor Applications
- High Reliability, Drift Free
- Surge Protection for Power and RS485 Communication
- 1.2 Km RS485 Digital Communication, Minimize Cabling and Engineering Cost
- Software Configuration Calibration and Data Monitoring
- Standard Modbus RTU Protocol, Direct Connected with PLC, HMI, Eliminate I/O Module Cost
- Innovative Nano Coating to Remain Window Clean
- Optional Auto Cleaning Wiper, Almost No Maintenance
- Onboard memory allowing users to easily calibrate and configure sensor at lab and distribute to various fields sites


- Output Signal: RS485 (Modbus RTU protocol), 19,200 bps, 8 data bits, no parity, 1 stop bit; 4~20 mA (optional)
Data Resolution: 16 bits (0.001% FS)
- Surge Protection: 4000 V DC
- Power: 3.6~12 V DC & plusmn;10%, 45 mA
- Protection: polarity, overload, short circuit
- Safety: CE, FCC

Typical Applications

- Drinking water, surface water, industry, water treatment, wastewater

Measurement Method

- The suspended solid transmitter consists of one light source and photo detectors. Incident light is scattered by the particles in the sample, and the scattered lights are measured by the detector. The amount of scattering depends on the amount of material in the sample, the wavelength of light used and the size and composition of the suspended particles. The transmitter uses a long life near infrared LED (880 nm) and the 90o scattered light method in accordance with ISO 1027 /EN27027 to assure accurate turbidity measurement. The total suspended solids value is then derived from turbidity measurement. An automated mechanical wiper is to remain surface clean and remove air bubbles of the optical window in order to maximize the accuracy and minimize the maintenance requirement.

Sludge Density Meter housing in a robust IP68 proof enclosure, 1500 N tensile strength Kevlar reinforced cable, up to 1.2 km digital data transmission, the Sludge Density Analyzer, is ideally used in water/wastewater industry.

SMR12 Total Suspended Solids (TSS) Analyzer  
Type: SMR12-2: 0~50,000 mg/L
- SMR12-3: 0~500,000 mg/L (depending on the medium)
- Measurement range: ±3% of reading (0~5,000 mg/L)
 ±5% of reading (5,000~500,000 mg/L)
- Resolution: 0.001 mg/L
- Repeatability: ±1%FS
- Light source: LED 880 nm
- Process flow rate: Max. 3 m/s
- Operating pressure: Max. 10 Kgf/cm2
- Operating temperature: 0~60 °C
- Response time: 1 sec
- Protection: IP68
- Housing: SS316L; Titanium
- DimensionS: SMR12-2: Φ 34 Χ 226 mm (with wiper), Φ 22 X 130 mm (no wiper), SMR12-3: Φ 39X249.5 (with wiper)
- Weight :SMR12-2: analyzer: approx. 500 g (SS316L); approx. 400 g (Titanium)
- SMR12-3: analyzer: approx. 800 g (SS316L); approx. 600 g (Titanium)
cable: 80 g/m

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