Complex Configuration

Feeling adventurous?  With a few extra steps the WaterFeature8 will communicate with analog data recording devices.

The diagram below shows a more complicated WaterFeature8 deployment.  This system shows us how to use analog recording devices and more complicated externally powered sensors such as flow meters and, coming soon, CO2 gas meters.

There are three additional components deployed with this type of system:

  1. Data logger for WaterFeature8 output data retention via 4-20 mA signal.

  2. DC Converter to power unique sensors that are not powered through the EZO [VCC] output.

  3. Powered sensors and un-isolated ground connections.

If you haven't already, read up on assembling your WaterFeature8 System Builder Kit with this simple tutorial.  Otherwise, continue reading for more details.

1.  Data Logger

The WaterFeature8 does not locally store data values.  It only reads the EZO/sensor, display's the most recently polled sensor value on the LCD screen, and scales the data for the 16-bit 4-20 mA output signal.

A properly configured third-party data logger can store the output data on a self contained drive or a digital storage media card.  This will allow you to retrieve the data and plot it with Excel or similiar program.  Note that most data loggers will require external power, see #2 below.

DIY Complex # 1 Data Recorder.png
DIY Complex # 2 DC Converter.png

2.  DC Converter

While the WaterFeature8 is powered by 24 VDC power, some sensors require external 3.3 or 5 VDC power.  One strategy to provide this is to install a 24 to 5 VDC power converter between the power supply and the meter.

Up to firmware v1.20 the only functional devices this is needed for are the DC pulse flow meters.

Data loggers also require a dedicated power feed and a large enough DC converter, if the same device voltages are needed, can supply power to all connected devices.

3.  Powered Sensors

While the WaterFeature8 is powered by 24 VDC power, some sensors require external 3.3 or 5 VDC power.  One strategy to provide this is to install a 24 to 5 VDC power converter between the power supply and the meter.

Up to firmware v1.20 the only functional devices this is needed for are the DC pulse flow meters.

Note that all EZO socket [PGND] inputs on the WaterFeature8 are provided with isolated grounds to support most EZO devices.  The flow meter grounds must be tied to system ground, and not the isolated ground, to enable reliable performance.  Visit our Downloads page for flow meter wiring recommendations.

DIY Complex # 3 Devices.png

What can you do with 8?

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