Support for reading Multical 21 water meters

Hedda · April 4, 2023, 9:50am

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[REQUEST] Water flow metering reading of IEC 62056-21 protocol smart water meters via photodiode/infrared optical eye reader header?

opened 10:07AM - 08 Sep 21 UTC

Hedda

enhancement integration: sml

**Describe the problem you have/What new integration you would like** Like to get water flow metering from smart water meters with IR eye via hardware similar to [Home Assistant Glow](https://www.home-assistant.io/blog/2021/08/04/home-energy-management/#home-assistant-glow) or [SlimmeLezer](https://www.home-assistant.io/blog/2021/08/04/home-energy-management/#slimme-lezer). Optical photodiode/infrared read and write header hardware for IEC 62056-21 protocol (formerly IEC 61107 / IEC 1107) like these: https://www.mysensors.org/build/ir http://jheyman.github.io/blog/pages/WirelessWaterMeter/ A hackerspace group in Denmark is selling these IR/photodiode optical reading heads for about $14 US (Google translate as test written in Danish) and they wrote a note that using magnets is required as the IR port transmitter / reader eye does not activate unless it sense a magnet: https://wiki.hal9k.dk/projects/kamstrup https://github.com/Hal9k-dk/kamstrup I believe that a such IR reader adapter could be used with newer Kamstrup water meters with IR optical heads common in Europe. Specifically, I myself live in Sweden where I believe that the Kamstrup MULTICA 21 / Kamstrup flowIQ 210x ultrasonic water meter is the most common model installed by the municipality's utility companies (e.i. local government agencies) in normal private residential houses here in Scandinavia (Sweden, Norway, Denmark, Finland, and Island) to track water usage for their service fees. https://www.kamstrup.com/en-en/water-solutions/smart-water-meters https://www.kamstrup.com/en-en/water-solutions/smart-water-meters/multical-21 ![image](https://user-images.githubusercontent.com/6320001/132475251-d11c3a53-223b-496a-b683-7cdd5ccbd2f9.png) ![image](https://user-images.githubusercontent.com/6320001/132484030-a79e7e76-eb27-4ecd-a7ec-d34797c9cb26.png) They currently also have Kamstrup flowIQ 2200 "advanced model with acoustic leak detection": ![image](https://user-images.githubusercontent.com/6320001/132476561-04013531-13d9-432b-a1df-cf5d3c2985b6.png) ![image](https://user-images.githubusercontent.com/6320001/132484562-c4952c04-803a-456f-8910-c51b347c84fc.png) and Kamstrup flowIQ 3100 "Commercial and industrial" model https://www.kamstrup.com/en-en/water-solutions/smart-water-meters/flowiq-2200 https://www.kamstrup.com/en-en/water-solutions/smart-water-meters/flowiq-3100 **Please describe your use case for this integration and alternatives you've tried:** I believe many new water meters offer such two-way bidirectional infrared port (IR receiver and sender header) for communication? https://www.mysensors.org/build/ir http://jheyman.github.io/blog/pages/WirelessWaterMeter/ Kamstrup seems to only provide some technical documentation about all their products here but nothing about their protocols: https://products.kamstrup.com/index.php Kamstrup apparently calls their DLMS implementation for Kamstrup Meter Protocol (KMP) it has been reverse-engineered here: https://github.com/bsdphk/PyDLMS https://github.com/RuntimeError123/hass-mc66c https://github.com/KenanV/KamstrupMultical66 https://github.com/Hal9k-dk/kamstrup/tree/master/Software%20eksempler/kamstrup_multical402 https://github.com/Hal9k-dk/kamstrup/tree/master/Software%20eksempler/kamstrup_powermeter https://github.com/bsdphk/PyKamstrup https://frack.nl/wiki/Stadsverwarming https://forum.mysensors.org/topic/3525/district-heating-city-heating-stadsverwarming-mysensor-ir-sender-receiver/ https://www.domoticz.com/forum/viewtopic.php?t=11333 As I understand most of those optical probes should work with optical infrared waves be compliant with the international standard IEC 62056-21 (formerly IEC 61107 / IEC 1107) or ANSI C12.18 communications protocols for energy metering for reading utility meters? https://github.com/pwitab/iec62056-21 https://en.wikipedia.org/wiki/IEC_62056 https://en.wikipedia.org/wiki/Smart_meter#Protocols Kamstrup official (and expensive) optical read-out head tools are called 6699-099 (USB) and 699-102 (9F D-sub plug serial) https://www.termonet.rs/pdf/Kamstrup/Optical%20Read-out%20(IR)%20Head%20-%20Data%20Sheet%20-%20English.pdf **Additional context** FYI, most of the older and newer Kamstrup electricity meters look to feature a similar or same type of bi-directional optical header, so the hardware could probably be repurposed for other meters as well PS: Off-topic but FYI; some if not all of these models of Kamstrup water meters can also be read remotely via Sigfox network RF (Radio Frequency) but that communication traffic is most of the time encrypted, at least if the water meter itself is owned and operated by a utility company or a service provider. https://www.kamstrup.com/en-en/water-solutions/water-meter-reading https://www.kamstrup.com/en-en/water-solutions/water-meter-reading/usb-meter-reader If the case is that the RF radio communication is not encrypted then there look to be projects that can work with that: https://github.com/adams-okode/kamstrup-integration https://github.com/weetmuts/wmbusmeters https://github.com/tobiasrask/wmbus-client

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