AirWire® Local LoRa Technology
Need to know how much diesel fuel is in the tank, how high the water level is under the bridge, or whether the chicken feed will last longer than the chickens? Senix ToughSonic Level Sensors can now get these answers to your desk or mobile device quickly, safely and inexpensively using the emerging LoRa spread-spectrum wireless technology.
- No cellular charges
- You own it
- Very low power
- Good range
- Latest IoT standards
- Secure wireless
ToughSonic Sensors Are Now Enhanced with AirWire
Get these common ultrasonic sensor applications IoT-connected to your business:
Level & Flow
Open channel flow
Flumes and weirs
Historical data logging
Bodies of Water
Flood alarms & warnings
Historical data collection
Pond, stream, river levels
What Are AirWire Local and LoRa?
Senix wireless products carry the brand name AirWire, and products designed to operate at distances of 10 miles or less we call AirWire Local. LoRa is an emerging wireless technology that handles many applications at low power, low cost and with good range performance.
- Collect level data from monitor sites and put it to use
- Display and alert level or volume conditions
- Use in buildings or outdoors
- Real-time measurements
- 2-5 years on D-cell batteries
- Measure heights to 50-feet with ToughSonic sensors
- Less expensive than running conduit inside buildings
- No wiring or power needed at monitored sites
- No cellular connect charges within the LoRa network
- Reduce labor and increase safety with fewer site visits
Why Use LoRa?
- Relatively long range handles many nearby applications
- Very low power consumption
- Ideal for measurement rates of a few times per hour
- Measure rate can be as fast as 15 seconds and scheduled to meet special needs
- High Security for privacy, measurement integrity and authenticity
- Data can be restricted to company LAN or connected to cloud services
- Conforms to latest IoT standards and can integrate with existing applications
How Does It Work?
At each monitored site a Level Transmitter and attached non-contact Level Sensor measure the distance down to the monitored liquid or material. That distance is periodically transferred wirelessly to a Receiver-Gateway that can serve many purposes, such as presenting the level(s) in a web page on a Local Area Network (LAN), sending email alerts for high or low level conditions, and/or transferring the data to an external application either locally or on the cloud. Level can be displayed simply as height or converted to volume (gallons, liters, etc.).
AirWire Level Transmitter
The battery-powered Level Transmitter connects with and controls a Senix RS-485 interfaced ultrasonic level sensor, then sends each level measurement to the Receiver-Gateway. It maximizes battery life by operating for a very short period of time to power the sensor and send the data, then goes back to sleep until the next measurement. In that very short time the transmitter and receiver-gateway communicate to schedule the next measurement and collect service statistics.
- One or many transmitters can send level measurements to one Receiver-Gateway
- Attach to sensor cable or relocate to improve wireless range using extension cable
- Small IP66 enclosure with waterproof cable entry gland
- 50-100,000 transactions using three industrial D-cell alkaline batteries
- Battery alternatives and solar versions in development
- Intended for applications with measurement rates of a few readings per hour
AirWire LoRa Receiver-Gateways
A Receiver-Gateway accepts level measurements from one or more level transmitters and can:
- Act as a web server to show levels to users on a LAN
- Send email alerts at high and/or low level conditions
- Inform each transmitter how long to sleep before the next measurement
- Log time-stamped levels for import to Excel or other applications
- Transfer level information to other applications either on the LAN or in the cloud
The Basic Receiver-Gateway is plastic housed with an internal antenna and is surface, wall or ceiling mounted. It can act as a server and/or Ethernet gateway, and can datalog 115,000 measurements (about 20 days at 15 minutes per measurement).
The Flex Receiver-Gateway is metal housed with a rear-attached vertical antenna and is surface mounted. It can act as a server and/or Ethernet gateway, and datalog up to 22.8 million measurements (over 10 years at 15 minutes per measurement). The antenna can be replaced with a coax cable to extend and elevate an indoor or outdoor antenna for increased range.
If the level transmitters are within range of Public LoRa services a cloud-based application can be used in lieu of the receiver-gateway. Similar or expanded features can be provided in a cloud-based architecture. Cloud-based services can also be provided simultaneously by transferring the level data stream through the receiver-gateway to the cloud.
The Receiver-Gateways are configured to customer-specific needs. Here are some possibilities for the Basic and Flex Receivers:
Currently Offered to
US & Canadian Customers
Field-proven sensors since 1990
A Typical Display
LoRaWAN is publicly available by subscription in some areas through private providers. These services can move data from Senix Level Transmitters directly to the cloud.
Level Transmitter Data Sheet
Receiver-Gateway Data Sheet