Electrical Conductivity (Salinity) Sensors
Greenspan manufacture several electrical conductivity sensors. All are made in our Melbourne facility. Greenspan’s Australian made EC sensors are designed for very long-term deployment at unattended monitoring stations.
- Supply
- EC-2500: 8–27 V; EC-1500/1550: 9-30 volts unregulated
- Measurement technique
- Toroidal measuring system
- EC-1500
- 4-20 mA analogue output, 56mm diameter
Overview
In detail
The EC range
The EC range are fully submersible and concurrently measures the fluid’s electrical conductivity and temperature to give salinity levels. The salinity sensors all offer full scale ranges from 500 to 75,000µS/cm, with or without temperature compensated output. Electrical Conductivity sensors with none standard ranges up to 200,000µS/cm are available.
EC sensor construction
Constructed from durable Acetal, our EC range have endured the harshest Australian environments for decades. For reliability, Greenspan EC sensors have no wetted metal components to corrode. This makes the sensor suitable for high conductivity (high dissolved solids) applications and even for water with high acidity. For protection, the sensor head is fully epoxy encapsulated. A hole through the middle allows water to flow. It is here that the water provides magnetic coupling for the measurement to take place. There are no moving parts on our electrical conductivity sensors and no serviceable components.
Analogue, serial or internal logging
EC-1500 & EC-2500A – Analogue output (4-20mA). EC-1550 & EC2500D – SDI-12 output. EC-2500L – Internal logger (SDI-12 adaptor available). The EC-2500L logging salinity sensor is available with an integrated battery pack. Using non-rechargeable lithium batteries the EC-2500L can be discretely deployed for long durations without the need for solar panels of external batteries.
Bespoke stainless steel
We are able to make bespoke designs of many of our water quality sensors. For industrial water quality monitoring, we can make sensor bodies from stainless steel and add in a threaded flange which allows fitment in industrial process piping systems.
Specifications
Technical specifications
- Measurement technique
- Toroidal measuring system
- EC-1500
- 4-20 mA analogue output, 56mm diameter
- EC-1550
- SDI-12 output, 56mm diameter
- EC-2500A
- 4-20 mA analogue output, 47mm diameter
- EC-2500L
- Integrated logger, internal battery power option, 47mm diameter
- EC-2500D
- Digital SDI-12 output, 47mm diameter
- Standard EC ranges (EC-2500)
- 0–5000, 0–10000, 0–20000, 0–60000 and 0–70000 µS/cm; other ranges to order
- Standard EC ranges (EC-1500/1550)
- 0-500, 1000, 2000, 5000, 10000, 20000, 40000, 75000 μS/cm; temperature-compensated and uncompensated units
- Accuracy (EC-2500)
- 1% FS @ 25ºC normalised; temperature 0.2ºC
- Accuracy (EC-1500/1550)
Downloads
Documentation, openly available
Everything you need to specify, install and integrate the Electrical Conductivity (Salinity) Sensors — no login, no paywall.
Related
Often specified alongside
- Range
- 0-100,000 µS/cm ±2%
- Output
- SDI-12 and 4-20mA standard; RS232 on 12-pin variant
- Supply
- 10-18 V DC, <80 mA
ESS Earth
Salinity Sensor Field Verifier
- Supply
- No power supply required
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