GENEQ > Environment > Conductivity Meters

Greenspan conductivity and temperature sensor
model EC3000


Description
The Greenspan EC3000 Conductivity Sensor provides a complete self contained measurement and data logging system for a wide range of environmental water monitoring applications. The sensor utilises a reliable and robust toroidal sensor for conductivity measurement and a thermistor for temperature measurement. Multi-point linearity and temperature calibration over the full operating ranges ensures stable, repeatable and accurate readings in the field.

The internal data logger allows long term data collection at remote sites, as well as options for remote telemetry connection. The sensor can be fitted with an external cable, or with an on board battery pack for true stand alone operation. Other cable options can provide serial output in SDI12 format for connection to external Data Logger or process controller.

The sensor is ideal for use in hydrographic and environmental water monitoring applications, including tidal and estuary monitoring. A durable acetal body with double O ring design ensures suitability for the harshest environment applications.

The EC3000 sensor is easy to configure and operate using the supplied Smartcom software and provides a cost effective solution for long term monitoring.

Features
  • Conductivity measurements via Toroidal Sensor
  • Storage of raw EC, temp and normalised EC to 25 degrees
  • Low power usage enables long term remote operation
  • Internal data logger for collection of data during critical events
  • Telemetry options via mobile phone, radio and satellite
  • SDI12 cable adaptor unit for connection into data logger or controller

Benefits
  • Can be installed in active waters (acidic or salty conditions)
  • Reliable and robust sensor ensures minimal field visits for maintenance
  • Suitable for marine applications and waterways with high sediment loads
  • Easy to configure logger – quick retrieval of data
  • Graphical and tabular display – export to spreadsheet format

Applications
  • Monitoring of streams and rivers, lakes and urban waterways
  • Salinity surveys and groundwater monitoring
  • Water supply storages including stratification studies
  • Intermediate and final effluent treatment monitoring
  • Tidal, estuary and oceanographic monitoring


Specifications
Measurement technique EC -Toroidal conductivity
Temp – Stainless steel thermistor
Standard EC ranges available 0-1000μS/cm 0-2000μS/cm, 0-5000μS/cm, 0-10000μS/cm, 0-20000μS/
cm,
0-60000μS/cm, 0-70000μS/cm
Other Ranges available Yes – Calibration charge may apply – refer sales office
Sensor Outputs Internal Data Logger – serial data via Smartcom software
Optional adaptor provides SDI12 serial output (3 wire)
Overall Accuracy (combined linearity, hysterisis and repeatability) EC +/- 1% full scale range
Temp +/- 0.2°C
Long term stability 0.2% full scale per annum
Resolution EC - 1 μS/cm, Temp - 0.05°C
Normalisation Normalised to 25°C
Cable type Polyurethane sheathed cable, OD 8mm, with 3mm vent tube, moulded entry,
HS7 connector
Cable lengths 10, 20, 30, 50, 100, 150m (32, 65, 100, 165, 325, 490 ft)
Power supply 8 to 30Vdc (at sensor), or on-board battery pack (option)
Power ESD protection  2000 volts
Current consumption Sleep <0.2mA, logging 50mA, communicating 30mA
Sensor warm up time 2 seconds
On-board battery pack (option) Housing screws to sensor size (OD x L) 47mm x 250mm
Battery capacity 9 x Lithium AA (3.6Volt) – Total capacity 5.2Ah @ 10.8v
Typical field life (battery pack) Over 6 months remote operation @ 1hr data logging
Internal data logger Non-volatile, battery backed RAM with real time clock
Memory size 2Mb capacity, with user selectable wrap function
Measuring units User definable
Data storage 250 000 readings. (Typically 5 minute data for >12 months)
Logging frequency User selectable from 1 second up to once per day
Averaging alarms User selectable via supplied Smartcom software
Operating temperature 0-50°C
Depth rating (water column) 100m
Storage temperature -5°C - +60°C
Weight 950g plus cable weight (665g per 10m length)
Dimensions (L x OD) 490.70mm x 47mm (19.32” x 1.85”)
Wetted materials UPVC, acetal,316 passivated stainless steel, polyurethane, viton

Optional Extras and Accessories
  • Moulded cable (specify required length above)
  • On-board battery pack (includes housing and battery pack)
  • SDI12 Adaptor (connects to end of sensor cable for serial output to logger)