LDDS20 instalation: "No sensor"

[Claudio Vidal]

Hello,

I have the liquid level sensor LDDS20, I am doing the first tests, but I have a doubt regarding the installation, I tested the sensor directly in the tank, but does not measure, throws "no sensor". 

Is it because you need to put ultrasonic coupling fluid, or should you measure without it?

[Claudio Vidal]

[Claudio Vidal]

El martes, 26 de enero de 2021 a las 12:13:46 UTC-3, Claudio Vidal escribió:

[Edwin Chen]

Hi, Claudio,

 

Please use the new decoder:

http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decode/ 

 

The problem there is invalid reading. Can you access to the device and run AT+5VT=5000. this will increase the heat time for the sensor. and see if now can detect.

 

Best Regards

Edwin Chen

 

----- Original Message -----

From：Claudio Vidal

Date：2021-01-26 23:14

Subject：Re: LDDS20 instalation: "No sensor"

To：Dragino-user

 

El martes, 26 de enero de 2021 a las 12:13:46 UTC-3, Claudio Vidal escribió:

--
You received this message because you are subscribed to the Google Groups "Dragino-user" group.
To unsubscribe from this group and stop receiving emails from it, send an email to dragino-user...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/dragino-user/635a3e6f-5fdb-4b43-b09b-c3182066caa0n%40googlegroups.com.

[Claudio Vidal]

Hi, Edwin,

I tried using the new decoder in Chirpstack, and I got an invalid reading:

Then, I tested with different sensor heating times:

.-  AT+5VT=5000

.-  AT+5VT=10000

.-  AT+5VT=15000

.-  AT+5VT=20000

But I still get the same result.. What could be going on?

--

Claudio Vidal Runin Ingeniero de Proyectos Departamento de I+D+I | Ast Networks +56 9 8861 6429 cvi...@ast.cl www.ast.cl Camino El Tepual Km 1 Puerto Montt

[Edwin Chen]

Hi, Claudio,

 

Do you add Ultrasonic coupling paste or AB glue between the sensor and the container?

 

Best Regards

Edwin Chen

 

----- Original Message -----

From：Claudio Vidal

Date：2021-01-29 22:26

Subject：Re: Re: LDDS20 instalation: "No sensor"

To：Edwin Chen

CC：Dragino-user

[Claudio Vidal]

Hi Edwin,

between the sensor and the container there is nothing, so I ask: 

.-  Ultrasonic coupling paste or ab glue is required?

.-  the two products have the same function?

.-  which of the two outputs should have measurement results?

[Edwin Chen]

Hi, Claudio,

 

Yes, you need to have either one of them. Please check the installation instruction in the LDD20 manual.

 

Both are the same , you can choose either of them.

 

.-  which of the two outputs should have measurement results?

I don;t understand.

 

Best Regards

Edwin Chen

 

----- Original Message -----

From：Claudio Vidal

Date：2021-02-01 20:45

Subject：Re: Re: Re: LDDS20 instalation: "No sensor"

To：Dragino-user

 

To view this discussion on the web visit https://groups.google.com/d/msgid/dragino-user/4d96b34f-aae1-4ad0-9ff3-4ab4c9949932n%40googlegroups.com.