Dataloggers with RF transmission - Nodes and Gateway

Encardio-rite offers an innovative long-range radio network solution that allows real-time monitoring of geotechnical and structural sensors in challenging conditions with reliable data transfer without any delay. With real-time data collected from the wireless system, the project owner, consultants and contractors remain aware of the slightest change in the data. Early warning system allows timely decisions, increased safety, reduction in project delays and consequently cost-effectiveness.

In our end-to-end wireless monitoring system, the sensors are interfaced with the long-range, low power wireless network through nodes that send recorded data to the Gateway with utmost reliability. Gateway uploads the collected sensor data to the central/cloud server.

Encardio-rite offers the following range of wireless products:

EWN-01V	Vibrating wire node – 1 channel. To be used with vibrating wire sensor
EWN-08V	Vibrating wire - 4 channel. To be used with vibrating wire sensor
EWN-01D	Digital node. To be used with SDI-12 interface sensors
EWN-01A	Analog node – 1 channel. Suitable for sensors with millivolt, voltage, 4-20 mA, Wheatstone bridge outputs
EWN-04A	Analog node – 4 channel. Suitable for sensors with millivolt, voltage, 4-20 mA, Wheatstone bridge outputs
EWN-01R	Relay node. To enhance the range of any node
EWG-01	Gateway. To collect sensor data from nodes, upload collected data to Encardio-rite cloud server or a third-party server
EAN-95MW	Wireless tiltmeter. It is a complete unit in itself including the sensor and the node

Model EWN-01V/08V Vibrating Wire Node

Model EWN-01V/08V node is suitable for vibrating wire sensors. It is available in variants to connect a single (model EWN-01V) to eight (model EWN-08V)sensors with an inbuilt thermistor. The node is capable of exciting and sampling vibrating wire sensors.

The complete range of vibrating wire sensors can be connected to the wireless node including:

· Piezometer, water level sensor

· Strain gage

· Pressure cell

· Displacement sensor, extensometer, crack meter, joint meter

· Temperature meter

· Settlement monitoring sensor

Model EWN-01A/04A Analog Node

Model EWN-01A/04A node is suitable for sensors with millivolt, voltage, 4-20 mA, Wheatstone bridge outputs. Two variants are available to connect a single (model EWN-01A) to four (model EWN-04A) analogue sensors.

The complete range of analogue sensors can be connected to a wireless node including:

· Resistive strain gage type load cell

· MEMS tiltmeter

· Electrolytic level (EL) tiltmeter

· Thermistor

· Sensor with millivolt output

· Sensor with 4-20 mA output

Model EWN-01D Wireless Digital Node

Model EWN-01D digital node is suitable for digital sensors (with SDI-12 interface) like model EAN-52M in-place inclinometer systems. It can also be connected to sensors with RS232 and RS385 outputs. The digital node has three channels and each channel can be interfaced with up to 32 sensors.

Model EWN-01R wireless relay node

Model EWN-01R relay nodes are used to extend the wireless range of the nodes. The relay node is useful in a situation where a node is unable to find a network path to reach the gateway, either due to long distance between them or due to some obstruction in the line of sight. A relay node is then placed between the node and gateway to allow the node to communicate with the gateway.

Gateway

Model EWG-01 gateway is used as the main networking device which uploads data gathered from all the sensors to the Encardio-rite cloud server or a third-party server. In addition, passes control messages through the network to ensure seamless operation.