EmonTx V3
Contents
emonTx V3
The emonTx V3 is the latest generation of the open source emonTx low power wireless energy monitoring node. The unit has been re-designed using surface mount (SMT) electronics to enable automated pre-assembled manufacture.
Features
- Emontx v3 can measure real power, apparent power, power factor, rms voltage and current on 4 different mains circuits, it also has inputs for temperature and humidity sensing. - Pre-assembled SMT design - A single AC-AC adapter can now be used to power the emonTxV3 and provide AC voltage measurement - 4x CT current sensing inputs - An on-board 3x AA battery option - Flexible choice of RF radio module and removable microcontroller
Port Map
Overview
Power Supply Options
Uploading Firmware
Standard Operation
CT Energy Monitoring
Single Phase
Three-Phase
Accuracy
Extended Operation
Temperature Monitoring
Utility Meter Interface
Optical Pulse Counting
Direct Optical Interface
if you have an Elster meter (tested with Elster 100C) the emonTx V3 with an IR TSL261R sensor can be used to interface directly with the meter protocol to read off the exact accumulated watt hours that you have generated or used. This reading can be used on it's own or to cross-check and calibrate CT based measurement. See here for original blog post
RF Connectivity
RFM12B
SRF
Electrical Characteristics
power consumption, absolute max values
