Since I have moved house, the web server for axotron.se also had to move. Unfortunately it was not quite as much plug-and-play as I had hoped, so the move resulted in a few days of downtime. The main problem was that I had to ask for a unique public IP address from the service provider Bahnhof and that I did not realize that the IP address I otherwise got was not unique for me (how does that work?).
Anyway, their support fixed the IP uniqueness problem while I talked to them today and now everything seems to be up and running again.
This post is in i Swedish, since it is probably mostly of interest in Sweden.
Den här bloggposten handlar om hur illa DHL Freight (Sweden) AB agerade när de skulle leverera ett paket till mig.
Jag beställde fredag den 11/7 2014 kl 15:12 några rördelar från Rinkaby Rör AB och de skulle levereras med DHL “inom 2-5 dagar”. Måndag den 14/7 fick jag ett mejl från Rinkaby att varorna var plockade, samt en länk för att spåra försändelsen på DHL:s hemsida. Det stod även “I normala fall är dina varor framme inom 2-5 arbetsdagar.”. På DHL:s sida dök det senare upp att paketet kommit fram till Norrköping den 15/7. Bra så långt.
Därefter kom följande text upp: “Klar för leverans till mottagare enligt överenskommen leveranstid”. För mig var det oklart vilka som kommit överens om en leveranstid. Kanske Rinkaby och DHL? Jag hade i alla fall inte hört något.
När inget hänt på morgonen den 17/7 (ingen avi, inget SMS) så ringde jag DHL och efter ett par vidarekopplingar och en telefonkö kom jag fram till någon i Norrköping. Hon sade att de kunde leverera fredag den 18/7 mellan 9 och 11. Vi kom även överens om att de skulle ringa 10 minuter innan leverans. Senare samma dag kom även en avi.
Varför skulle paketet ligga och vänta i Norrköping från den 15/7 till den 18/7?
Nåväl. När jag skriver detta är det den 18/7 och en stund efter kl 9 gick jag in på trackingsidan och möts av följande:
Spårningsinformation med lögnaktigt påstående om att de försökt leverera och misslyckats.
De påstår alltså att de varit här och försökt leverera kl 8:22 utan att lyckas. Det är tre problem med detta:
De ringde inte 10 minuter innan de försökte leverera, vilket vi kommit överens om.
8:22 är inte mellan 9 och 11 (men just det spelade mindre roll för mig i detta fall).
Jag var hemma och satt och åt frukost kl 8:22, så om de ringt på dörren hade jag öppnat. Att det försökt leverera och misslyckats är alltså en lögn.
Jag ringde DHL i Norrköping (011-4969680) och Barbara som svarade försökte få tag på åkeriet utan att lyckas. Efter att hon försökt ringa ett par olika personer utan att lyckas lovade hon att hon skulle göra nya försök att få tag på åkeriet och återkomma inom max 10 minuter. 35 minuter senare (vilket tydligen motsvarar 10 minuter i DHL:s universum) ringer hon och säger att hon har en bra och en dålig nyhet. Åkeriet ska visst vara på väg ut med det ena av två kollin i försändelsen, men det andra har de tappat bort!
As a complement to the ad-hoc metal detector I described in the previous blog post, I wanted to have a look at the heat from the pipes of the hydronic heating system in the floors using an infra red camera before I started to drive screws through the floors. As luck would have it, I was able to borrow a thermal camera from a friend. The camera was a Flir E4 upgraded with a firmware hack to get a resolution of 320×240 pixles.
I did not know how well I would be able to see the pipes in the floor using this method, but as it turns out, the camera was very good at showing how the pipes were laid out. The picture below shows a typical example.
Heat from pipes in the floor.
Before taking the picture, I had placed tape between the metal sheets (i.e. on top of the beams) in the floor, using the metal detector to guide me. Since the heat spreading metal sheets do not extend all the way to the walls and I knew the pipes would turn between the end of the sheets and the walls, I ended the tape strips where the sheets ended. The thermal image confirms that the pipes are straight where there is metal (and tape) and that they are bent and cross the beams where expected near the wall. The IR camera combines the picture from the IR sensor with contours derived from a picture from a visible-light camera and this helps identify the tape and other objects.
The picture below shows how a pipe crosses a beam when going into another room.
A pipe crossing a beam between rooms, right where the metal ends.
Here is a picture showing pipes along the walls and on both sides of an opening between two rooms.
Pipes at the boundary of two rooms.
The hydronic heating system is made up of several separate sections with their own thermostats. The picture below shows pipes from different sections having different temperatures.
Pipes with water of different temperature.
The thermal contrast turned out to be very good on the wooden floor, but under the ceramic tiles at the entrance, the pipes were much harder to discern as shown below (not that this was of interest to me since it was the wooden floor that needed fixing). The reason for the difference is not entirely clear to me. Maybe the tiles conduct heat much better and spread the heat in a much more diffuse manner? Maybe it takes longer to heat up the tiles? Maybe the thermal coupling from the pipes to the tiles is lousy?
The pipes are not as easily seen under the ceramic floor tiles at the entrance (top) as they are under the wooden floor (bottom).
The thermal imaging also yielded some unexpected findings. A large part of one of the rooms lacked pipes, although the metal detector clearly showed that there were sheets of metal in the floor. This seems like a clear sign of cheating on behalf of the company that built the house, “Bygg OM AB“, in Linköping. They are probably also the ones who are responsible for the creaking floors.
Thermal image shows that pipes are missing from a large section of this room.
In addition to the large area of missing pipes in one of the rooms, a smaller area with a metal sheet but without any pipes was found in a large closet at the entrance.
Random images
I could not resist playing a little with the camera and here is a selection of some random pictures I took:
The central heating unit.Myself (there is some parallax error between the thermal and the visible light pictures here due to a mismatch between the real distance to the subject and the distance setting of the camera)A hot spot on the side of the freezer (and some residual heat around the stove).A water meter.A water tap after tapping hot water for a while.A power drill with a hot drill bit and some newly drilled holes in the floor that are cooling off.
