Serial to SDI-12 Protocol Converter

Features

• RS485 Modbus Master / NMEA 0183 compatible

• SDI-12 v1.3 compliant

• All SDI-12 data validated

• Low power consumption

• User-selectable averaging

• Simultaneous readings of up to 10 serial data stream sentences

By utilising the intuitive configuration utility (Windows® software), the end-user can effortlessly load/save config files to the device. This enables ease of integration with a broad selection of serial-compatible sensors regardless of the parameter being monitored (depth/level, wind speed/direction, rainfall, temperature, humidity etc).

Multiple serial sensors can be streamed into a single data logger / PLC, as multiple protocol converters can operate on the same SDI-12 bus.
With simultaneous readings of up to 10 serial data stream sentences, user-defined thresholds can be set to trigger a control output (e.g. SMS/visual/audible alarm, turn a pump on/off etc.) depending on the application.

Conformance

The protocol converter accepts RS485 Modbus Master or NMEA 0183 data stream, parsing the selected parameter readings from the sensor(s) and making these available as SDI-12 values. The converter is fully SDI-12 V1.3 compliant and can provide pass-through power to power the sensor directly.

All data parsed is checked for validity. A known constant value (-1) is output if the data is either invalid or the sensor is not connected, making data analysis easy.

Technical Specifications

Power Requirement:                9-40VDC
Power Consumption:               40mA
Signal Input:                            RS485 Modbus (Master) / NMEA 0183
Signal Output:                          SDI-12 v1.3
Default SDI-12 Address:          0
Warmup time (until valid data):  <5 seconds