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I want to order 2 Alaxa watermeters.
One for my main waterline (22mm) and one for the hotwater (15mm). They will be connected to my RFXmeter.

Just got an offer in from Alaxa, they recommend the 1 puls per 10 liter version for my main line and the 1 pulse per liter for the hotwater version.

What choice did you make? I tend to stick to 1 pulse per liter, don't see much use in the factor 10.
Price for each is 65 euro, seems the price went up.....

What are they doing, the price is up and wrong advice!
Alexa has got many orders thanks to this forum.
The one you need is 1 pulse for 0.5 liter for both and 65 euro total order.

Thanks Pieter, I got that feeling already.

Just of the phone with Alaxa, they don't sell the 1 pulse per 0,5 liter anymore. Apparently they upgraded the quality and deliver only more expensive versions.
Their coldwater version does 1 pulse per 10 liter their hotwater version 1 pulse per liter. Since they have the same price it is an easy choice to switch to the hotwater version for both cases.
Order type: LXSGR20EP1

Go for the "hotwater"-version for both, *if* it has enough throughput for your main line.
You don't want to limit the flow in the main-line, then you will get problems with the waterpreassure in the house.

//Markus

They are both 3/4" so there should be no problem with my 22mm tube.

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by zebrafilm</i>
<br />Just of the phone with Alaxa, they don't sell the 1 pulse per 0,5 liter anymore. Apparently they upgraded the quality and deliver only more expensive versions.
Their coldwater version does 1 pulse per 10 liter their hotwater version 1 pulse per liter. Since they have the same price it is an easy choice to switch to the hotwater version for both cases.
Order type: LXSGR20EP1
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">OK, spec should be better then, thats good! Place a picture on the forum when you get them.

Today my water meters arrived, allthough I ordered two of the same I got two slightly different ones. Guess thats why I got 10 euro discount....
One looks like a good piece of work, almost everything copper with a thin plastic cover. The wire is fed through a metal shielding and looks solid.
The otherone has a bigger plastic cap that can fal off
Everytime you open it you have to be carefull not to cut the wire with it. The wire is also unprotected and hanging more or less loose.
Don't know what to think of such a delivery.
Anyway here are some pics as requested.

Bastiaan

Yes the look more robust!
Perhaps they are more accurate as well

Bastiaan, both watermeters have some sensor + a cable connected. What does that cable do? Is this something you could directly use with an RFXCOM product for water measuring? How did you integrate these watermeters into your HomeSeer (I assume) system?

Thanks!
DJ

Hi DJ
Yes its a pulse counter which can be directly connected to the rfxmeter.
The rfxplugin for homeseer supports this of course.

sorry bastiaan

RFXCOM meter interfaces direcly with the meters. Basically it is a (reed)contact that switches on and off with the pulses.
In the RFXCOM software and of course in RFXCHarts there is full support. It's very simple to add and get working. Just get the open cable + RFXCOMmeter, plug the cable in the input and set it up in HS.
I only made a virutal device to give me daily totals on screen. (takes the total of the day and substracts it from the current reading).

Bastiaan

Nice! Now I'll have to get one of those watermeters and get an expert to mount it

Thanks..

DJ

Hi Bastiaan,

This weekend, I will (hopefully) finally install the Alaxa watermeters that have been laying around for over a year now... Both my hot and cold water pipes are 22 mm. I have two 1 pulse / liter meters for hot water, as the one on the left in your picture (hot water version as that one is 1 pulse / liter).

As I'm not a plumber and would like to minimize the risk of introducing any leakages, I'm wondering:

- The watermeters come with two 3/4" adapters, as mounted on the one on the left in your picture. The adapter consists of a piece of threaded pipe, a nut and a rubber O-ring. Do I need to use any teflon tape to connect the adapter to the water meter, or will the O-ring be enough?

- To connect the watermeter to the 22 mm water pipe, I got two 3/4" -> 22 mm adapters ("knel schroefbus", as Gamma calls them). The 3/4" side screws onto the threaded end of the adapter that is shown in your picture. I guess I should definitely use teflon tape here, right?

- To connect the water pipe itself to the 3/4" -> 22 mm adapter, I won't be using any tape, as the 22 mm side of it is a "knel fitting".

Any plumbing adviced that did the trick for you?

Thanks,

Lennart

If the coupler has a rubber ring, it should not need anything else.
Don't think it is an O-ring but normal (flat)sealing ring.

If you put threads into each other you can use tape or buy a tube with special sealant. This works easier. Loctite no: 570 for example works on the principle that when there is no air around it hardens out. (Keep enough air in the tube therefor). It is also allowed for hotwater appliences.

Knelfitting: Be aware that 'Gamma' quality is low. Don't lock them too hard or they will fail. Small steps, check for leaks and tighten a bit more if needed. ("locked is locked" as my father said)
Next time go to a real plummer and get better quality for important connections like this.[;)]

Good luck with your adventure as plummer.