Basic Water Quality Analyzer
Conductivity Meter

SMR07 series

Conductivity Analyzer

Conductivity Analyzer is connected directly via RS485 communication interface, providing simple, reliable, cost-saving process data with remote monitoring, calibration, configuration and diagnostics capabilities.
Housing in a robust IP68 proof enclosure, 1500 N tensile strength Kevlar reinforced cable, up to 1.2 km digital data transmission, the Conductivity Meter is ideally used in water/wastewater industry.
  • Robust IP68 Water Submersible Enclosure, Solution Without Cabinet
  • On-line Realtime Measurement
  • Ultra Low Power Consumption, Ideal for Outdoor Applications
  • Temperature Compensation
  • 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
  • Onboard memory allowing users to easily calibrate and configure sensor at lab and distribute to various fields sites
SMR07 Conductivity Analyzer
Measurement range SMR07-1: 0 ~ 500 mS/cm
SMR07-2: 0 ~ 50 mS/cm
SMR07-6: 0 ~ 5 mS/cm
Accuracy ±2% of reading ±5 μS/cm
Resolution 0.1 μS/cm
Repeatability ±0.5% FS
Operation pressure Max. 10 Kgf/cm2
Operating temperature 0 ~ 85 °C
Cell constant 1.00; 10.0
Response time 1 sec
Protection IP68
Temperature sensor Pt1000
Temperature measurement range 0~60 °C
Temperature accuracy ±0.5 °C; ±0.1 °C (optional)
Process connection M28x1.5
Housing POM
Dimension Φ 26 Χ 221 mm
Weight analyzer: approx. 150 g
cable: 80 g/m
Typical Application
Drinking water, surface water, groundwater, industry, water treatment, wastewater
  • 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 ±10%, 15 mA
  • Protection: polarity, overload, short circuit
  • Safety: CE, FCC
Typical Applications 
  • Drinking water, surface water, groundwater, industry, water treatment, wastewater
Measurement Method
  • Theoretically, water free of any contaminants will not conduct electricity. The ability to carry on electric current depends on the presence of ions; conductivity increases with increasing ion concentration. Conductance of a solution is calculated by measuring the electrical current between two chemically inert platinum(Pt) coating electrodes set a fixed voltage source and immersed in water sample. Conductivity is customarily reported in micromhos per centimentre. In the International System of Units, the reciprocal of the ohm is the siemens (S) and conductivity is reported as millisiemens per meter (mS/m); 1 mS/m=10 μmho/cm and I μ s/cm=1 μmho/cm. The constant(K) of electrode: K=10.0 for conductivity>20 ms/cm; K=1.0 for conductivity 0.02~20 ms/cm
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CAB06 Configuration cable (1.5 m, USB interface)
CAB12 2 ports RS485 cable
CAB16 4 ports RS485 cable
PIM02 Pipe mounting
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Standard cable length is 3 m, customized length is available upon request