District heating - Reading Kamstrup Multical 401

[jjansen]

I have a Kamstrup Multical 401 installed at home as a metering device for my district heating system.
This device is standard equiped with an IR interface in order to extract data.

Based on some Danish forum posts / websites I created a 'sensor' and a ESPEasy plugin in order to get this information into Domoticz.

Plugin: https://github.com/letscontrolit/ESPEas ... mstrup.ino


Within the ESPEasy interface I convert the Heat value from MJ to kWh. This makes processing in Domoticz easier.
Within Domoticz I use regular RFXmeter counters.


The ESP-12E is also used to read from my smart-energy meter via the P1-interface


The proto-PCB is held on it's place with a simple magnet




IR RX/TX sensor layout/setup based on http://wiki.hal9k.dk/projects/kamstrup
schematic http://wiki.hal9k.dk/_media/projects/ka ... ematic.pdf
software based on http://elektronikforumet.com/forum/view ... =2&t=79853

[freijn]

Very interesting sTuff!!

THanks for sharing..

1 single simple question ..... "Normally" the meter is checked once in a year by the provider to be able to send you an invoice.
How often do you interrogate the device ? Are you not afraid draining the battery too quickly?

Greetings

Frank

[mrwee]

Soooo nice! Any chance of adding support for the IEC 62056-21 protocol? (Iskrameco MT372)

[jjansen]

Soooo nice! Any chance of adding support for the IEC 62056-21 protocol? (Iskrameco MT372)

I am not familiar with this protocol. But I guess it should not be too difficult...? I cannot do this, because I don't have a IEC 62056-21 compatible device.

Very interesting sTuff!!

THanks for sharing..

1 single simple question ..... "Normally" the meter is checked once in a year by the provider to be able to send you an invoice.
How often do you interrogate the device ? Are you not afraid draining the battery too quickly?

Greetings

Frank

For now I have set a interval of 5 minutes to generate some data; but this might drain the battery too quickly. My meter is already 12 years old... So maybe close to EOL of the battery.
I will change to every hour of even less.

[hotdogg]

A bit late to this post - Looks good.

Is there some way to set up a centralised heating thermostat controller with the Multical 401? Tired of individually controlling my radiators! .

[charuga]

I have a plugin problem,

When I connect the optical head to the USB, I'm reading the calorimeter normally,
but it does not show any readings in the espeasy plugin.
in the log writes a timeout ...

I tried with wemos d1 and d1 mini...
Also how to add more variables, such as t1, t2, dif. T

Is there any plugin for 402, 601, 602
their logic for reading is simpler because they use 1200, 8n 2, do not use for request 300, and read 1200 baud.

Please help

[Armin]

Dear jjansen!

Can you send a new link to ino?

[remko2000]

Is it this one?

https://github.com/chipsi007/ESPEasyPlu ... a95a012072

[Armin]

Yes, I find this.
I try it with original (base) code, but I have this response:

Code: Select all

17:13:12.623 -> 0000000000000000000000000000000000000000000000127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127127ERR(TIMEOUT):

Any idea?

[raj]

Does anyhone know where i can buy a 66-99-108 data cable? Where is it possible to get Meter tool for Kamstrup 401 Meters

I have bought a used one and want to reset it before use.
help or idea how to do it would be greatly appreciated.
my email : iskahlon@gmail.com