FTS - Model SDI-12 -Digital Sensors

There are a number of advantages of SDI-12 over analog, including:

• Smarter: Unique and complex self calibration algorithms can be done in microprocessor based Sensors.
• Quicker and easier: Because the calibration is stored in the sensor, sensors can be swapped without the need to re- program the data logger.
• More flexible: Permits longer cable runs (up to 300m). SDI-12 digital signal is low power and yet far more resistant to data errors than a low-power analogue signal, greatly reducing the likelihood of corrupt data due to interference.
• More efficient: Power is supplied to the sensor through the SDI-12 interface. This eliminates the need for a separate power supply for each sensor.
• Less costly: Reduces training required for field staff. Personnel trained in SDI-12 have skills to work with a variety of SDI-12-based data loggers and sensors.
• More expandable: Provides the ability to use a single available data channel for multiple sensors.—up to 62 sensors can be connected to a single SDI-12 port.
• Standard: SDI-12 is an international standard, so it guarantees interoperability between sensors, data loggers and other devices regardless of the manufacturer.