How to use a PT100/RTD
Only applicable for NEON Temperature Transmitters using protocol v3 and v4
Connecting the PT100/RTD
3-wire PT100/RTD
The RTD wire must be connected to the temperature interface as illustrated in the following image:
The pinout of the interface when using an RTD is the following one:
Pin 1
RTD sense (red)
Pin 2
RTD + (red)
Pin 3
RTD - (white)
Pin 4
Not used
2-wire PT100/RTD
The RTD wire must be connected to the temperature interface as illustrated in the following image:
The pinout of the interface when using an RTD is the following one:
Pin 1
RTD + (red)
Pin 2
Not used
Pin 3
RTD - (white)
Pin 4
Not used
Configuring the device
The NEON Temperature Transmitter is configured by default to use a type K thermocouple. Using a PT100 is possible by changing the configuration of the transmitter once provisioned. The configuration can be changed by generating a downlink using the NEON configurator and sending the downlink using the LoRa Network Server (LNS).
Protocol v3
In the Application Configuration tab, in the field Sensor Type change the selection to the desired temperature element.
Click Encode and send the downlink to the device through fPort 15. The device will reboot once the downlink is received changing its configuration.
Protocol v4
In the Sensor tab, in the field Sensor Type change the selection to the desired temperature element.
Click Encode and send the downlink to the device through fPort 7. The device will reboot once the downlink is received changing its configuration.
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