Multi Parameter Sensor Seametrics Typical Installation
Multi Parameter Sensor Seametrics Typical Installation

Multi Parameter Sensor Seametrics

Up to Six Parameters with Datalogging
  • 5 standard configurations.
  • Integrated datalogger.
  • Modular design for varying site needs.
  • Includes SDI-12 and Modbus® interfaces.

    Multi Parameter Sensor Seametrics Typical Installation
    Multi Parameter Sensor Seametrics Typical Installation


This single unit can do the work of six sensors—all at the same time. Available in a variety of configurations to fit your needs.

To make your work even simpler, this sensor comes standard with both SDI-12 and Modbus interfaces, an integrated datalogger, as well as wireless connectivity for cellular modems.


Multi Parameter Sensor Seametrics Typical Installation
Multi Parameter Sensor Seametrics Typical Installation
  • Available in 5 standard configurations to measure combinations of : pH, ORP, temperature, salinity, TDS, pressure and level, dissolved oxygen, and turbidity.
  • Includes both SDI-12 and Modbus interfaces for greater flexibility.
  • Integrated datalogger stores records in non-volatile memory.
  • RS485 network—connects with other Seametrics Smart Sensors.
  • Wireless connectivity.
  • Available with a variety of cable options—including polyethylene, polyurethane, and FEP.
  • Flexible Windows®-based programming.
  • Real-time viewing and easy export to spreadsheets/databases.
  • Direct-read option for use with panel meters or RTU/PLC applications.


Seametrics’ Multi-Parameter Smart Sensor is available in 5 standard configurations.

Item Option 1 Option 2 Option 3 Option 4 Option 5
Dissolved Oxygen


  • Surface water monitoring.
  • Groundwater monitoring.
  • Agricultural runoff studies.
  • Discharge monitoring.
  • Aquaculture.
  • Leachate monitoring.
  • Remediation performance monitoring.
  • Waste water treatment discharge.



Material Acetal
Strain relief Included
Tube Material 316 stainless steel or titanium
Wire Seal Materials Fluoropolymer and PTFE
OD 0.28” (0.7 cm) maximum
Break Strength 138 lbs. (62.7 kg)
Maximum Length 2000 feet (610 meters)
Weight 4 lbs. per 100 feet (1.8 kg / 30 m)


Communication RS485 Modbus RTU
SDI-12 (ver.1.3)
Direct Modbus Read Output 32-bit IEEE floating point
SDI-12 Output ASCII
Internal Math 32-bit floating point
External 12 VDC nominal / 9-15VDC range
Level/Pressure 16 bit ± 0.05% FSO typical
Absolute PSIA 100 PSI  


± 0.1% FSO maximum (B.F.S.L. 20° C)
Absolute mH2O 70 mH2O
Absolute FtH2O 231 FtH2O
Conductivity 0-100 mS/cm 0.001 mS/cm ± 0.5% of measured value
Salinity 2-42 PSU 0.001 PSU ± 1% of reading or 0.1 PSU whichever is greater
TDS 4.9 – 147,000 mg/L 0.1 mg/L ± 0.5% of measured value
pH 1-14 pH units 0.01 pH units ± 0.2 pH units
ORP ± 1200 mV 0.01 mVH 0.1 mVH
Dissolved Oxygen 0-25 ppm 0.01 ppm when <4.00 ppm 0.1 ppm when >4.00 ppm 1% of reading or 0.02 ppm whichever is greater
Turbidity 0-400 or 0-3000 NTU ± 3 NTU ± 2% @ 25° C or ± 2 NTU whichever is greater
Temperature -5˚ to 40˚C (23˚ to 104˚F) 0.1° C ± 0.5° C

Read more : DO2 Dissolved Oxygen Sensors Seametrics;Temperature Sensors Type T1 Seametrics; CTD and Multiparameter Instruments; Current Meters And Open Channel Meters; Model 803 ROV Electromagnetic Current MeterTurbidity Sensors Type Turbo Seametrics


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