mainstream™
Mainstream SDI Adapter
The SDI-12 Adapter connects to the Mainstream RS232 communications port and is mounted externally to the Mainstream system unit.
The SDI-12 Adapter, can be used to interface the Mainstream with other devices using the SDI-12 protocol and is a read-only device, allowing the user to read measurements from the Mainstream over a 3-wire interface.
Devices suitable for interfacing can include wireless telemetry units and larger industrial SCADA systems. This allows the Mainstream to be utilised in a wide variety of applications.
- Low power consumption
- Powered via ADCON cable
- Capable of relaying measurement data from the Mainstream
- Quick to setup and configure
Mainstream uses the area-velocity method to give a continuous or time sample measurement of fluid flow. Mainstream uses a streamlined probe that operates immersed in the flowing liquid. The velocity probe transmits ultrasound into the liquid to create a zone of inspection. Bubbles and solid particles carried through this zone by the flow, even when present in only minute quantities, reflect ultrasound back to the probe.
The received ultrasound signal is processed to produce a histogram of the flow velocities. Analysing this histogram gives the mean flow velocity. Only signals containing verified velocity information are used, thereby ensuring measurement integrity.
Liquid level is measured by a submerged pressure transmitter or ultrasonic sensor. The flow cross-sectional area is deduced from the liquid level measurement and the stored description of the channel or pipe cross section. The flow rate is the flow velocity multiplied by the flow cross-sectional area.
power supplies
| ADCON cable: | Cable carries a 6V power supply |
| Power Consumption: | Idle < 20µA, communicating over SDI < 2mA, Communicating with Mainstream < 10mA |
communications
| Mainstream: | Male connector on 0.5m lead mates with Mainstream communications connector |
| SDI-12: | ADCON connector on 0.5m lead communicates over Serial Data Interface at 1200 baud |
system unit
| Materials: | Ultra pure cast aluminium |
| Dimensions: | 98 mm wide X 34 mm deep X 64 mm high |
| Weight: | 300 g |
| Operating temperature: | -10°C to 85°C |
product support
To order additional products please call: +44 (0) 01535 654333 or email: support@mainstream-measurements.com