The most economical solution allows only monitoring;no remote control is provided. An RS210 CELL unit is placed near or on the engine and a pressure transducer is attached to the pressure line, typically using a T near an existing pressure gauge. The RS210-CELL will upload data to the online application every 30 minutes, providing detailed historic data on engine run time. This can be used to indirectly determine such measures as gallons/kilolitres of irrigation water delivered, verification of frost protection equipment function and even the amount of fuel consumed.
This is the most advanced solution provided both real-time monitoring and remote control. In this case a Murphy EMS-PRO controller is required. The Murphy controller is connected to an RM210 base station unit using a special cable providing both power and RS-485 network communications. Cellular/mobile coverage is required, or optionally a nearby direct Internet connection (e.g. WiFi). The RM210 will pull current engine data at regular intervals (typically 5 or 15 minutes) and deliver this to the online application via the cellular/mobile network. Whenever the user decides to turn engine on/off this is a few simply clicks in the online application. Control signals are then sent via cellular/mobile network to the RM210 and immediately after the RM210 will send the signal via the RS485 connection to the Murphy controller. Control delay depends on cellular/mobile network, but is typically less than 1 minute.
The following is typical data available online (depends on register map of Murphy controller used):
- Engine temperature
- Engine battery level
- Oil pressure
- Engine running hours
- Miscellaneous engine status flags
- Discharge pressure (pump)
- In-take level indicators (such as reservoir level): The remote control can be ad-hoc, meaning the user decides to turn on or off and clicks a button in the online application. However, the control can also be programmed as part of an irrigation schedule and there by happen in a pre-determined fashion without requiring the user to go online. Finally, control could also happen as result of a rule reacting to input from another sensor in a Ranch Systems installation, such as a temperature sensor indicating frost or a level sensor indicating high or low water level.