PH-1000L Logging pH Sensor

The PH-1000L is a logging pH sensor manufactured in Australia by Greenspan, it has the same capabilities as the PH-1000A but with an internal logger rather than analogue output.  The robust design ensures survivability in the harshest of environments. Its 47mm diameter makes it suitable for 2″ borehole monitoring.

General Applications of PH-1000L

  • Sewer monitoring
  • Monitoring of streams and rivers, lakes and urban waterways
  • Catchment studies and forestry management
  • Water supply storages including stratification studies
  • Water and wastewater treatment monitoring
  • Groundwater analysis and monitoring
  • Industrial process, Acid Sulphate studies
  • Tidal, estuary and oceanographic monitoring



PH-1000L – pH sensor with Logger

The PH-1000L is a pH sensor with a logger integrated into the main body. It is ideal for long-term deployment in the field as regular visits are not required. It is possible to connect an SDI-12 adaptor to extract data.

Optional Extras for PH-1000L


Measurement Technique: Gel-filled glass electrode with internal Ag/AgCl reference; Field Replaceable electrode

Range: 0-14 pH

Accuracy: ±0.2 pH

Sensor Outputs: Internal Data Logger – serial data via SensorMate software optional adaptor provides SDI12 serial output (3 wire)

Power supply: 8 to 30 V DC (at sensor), or on-board battery pack (option)

Current consumption: Sleep <0.2 mA, logging 20 mA, communicating 30 mA (consumption rates vary depending on parameters selected)

Internal data logger: Non-volatile, battery-backed RAM with real-time clock

Memory size: 4 Mb capacity, with user-selectable wrap function, typically 250,000 readings. (At 5-minute data for >12 months)

Dimensions (L x OD): 429.5 mm x 47 mm (16.91” x 1.85”)

Additional information

Product Function


Product Type