Wireless monitoring
Two wireless technologies, each with its own job. Bluetooth connects the sensor to the data logger, LoRaWAN connects the data logger to the gateway. Neither requires you to break through a wall.
Why use wireless monitoring?
Because cables cost more than the cable itself. A cable penetration in a cleanroom wall is a change that has to be documented. A cable through a door seal can ruin the seal. And a network cable to every unit requires an agreement with IT before anything at all can be set up.
Wireless removes all three. The sensor talks Bluetooth to the data logger a few metres away, the data logger talks LoRaWAN to the gateway, and the gateway is the only unit that needs a connection. The gateway does, however, require an Ethernet connection, it cannot run on Wi-Fi.
Range depends on the building. We survey on site before we promise anything.
The signal path through the building
The sensor sits inside the equipment and transmits over Bluetooth to the data logger on the wall. The data logger transmits over LoRaWAN to the gateway, which can be at the other end of the building.
Only the gateway touches your network, and it requires an Ethernet connection. Everything else runs on its own.
Why LoRaWAN →
The three technologies in the system
Bluetooth
From sensor to data logger. Used for the sensing itself, not for the gateway. The sensor can sit inside the equipment without a cable.
Read more →
LoRaWAN
From data logger to gateway. Long range and low power consumption. Runs on its own network, independent of your IT.
Read more →
Wi-Fi
Optional alternative. Cobalt XS Wi-Fi connects to your existing network if IT prefers it.
Read more →Range in the real world
LoRaWAN reaches up to 15 km in open air. Inside a building it is closer to 1 to 2 km, and in basements, behind metal shelving and through reinforced concrete considerably less. That is why we survey on site and place the gateway accordingly, or install an extra one. One gateway handles up to 50 data loggers and 100 to 200 sensors.
Frequently asked questions
Does IT need to open anything?
With LoRaWAN, only for the gateway, which requires an Ethernet connection. It cannot run on Wi-Fi. If you choose Cobalt XS Wi-Fi, IT must give the individual units access.
What if the connection drops?
The data logger keeps measuring and stores data locally for up to 28 days. When the connection is back, the measurements are synchronised, so there is no gap in the graph. No alarms are raised for temperature excursions in the meantime, because the logger cannot send data to the platform.
Is wireless less reliable than cable?
Not in practice, because the data logger stores data locally for up to 28 days. A dropout delays reporting, it does not delete the measurement. However, no alarms are raised in the meantime.
How many gateways do we need?
Typically one per building. We survey on site, because metal and basements weaken the signal.
Can we mix LoRaWAN and Wi-Fi?
Yes. Both types of logger sit in the same dashboard, regardless of how they transmit.
Where wireless monitoring is used
Cleanrooms
No cable penetrations in walls that need documenting.
Read more →
Hospitals
Monitoring across departments without loading the hospital network.
Read more →
OCEAView
All loggers in the same dashboard, regardless of how they transmit.
Read more →
EU GMP Annex 11
Requirements for computerised systems and data integrity.
Read more →De bruger os allerede
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