MisterH1337 @fl13dl1c3
I have not gone back over the thread in detail, as I have been following it. There are a few things that might have effects. So lets get some things out of the way…the software is the software, it’s going to work the same regardless, if it’s the same version. There are small variances in certain things and how they read. power they produce etc..and unless one is clearly faulty…red herrings.
- Manometer
- Thermal Probes
- Heating elements
Apart from the Manometer, the other items have a very small variance….the Manometer although a larger variance, is still actually very accurate, because pretty much 90% of Manometers are made by Orman, hen rebranded as necessary.
There are lots of things that can be causing an apparent discrepancy, as different sensors are reading different things. All the following must be considered.
- The temperature read by a thermal probe in the HX, is different to the one in the boiler at certain times
- The steam temperature of the boiler can vary from the HX temperature
- The steam boiler probe will often read differently to the HX temp
- Steam pressure only has a loose relationship to HX temp a lot of the time
- Thermal mass and heat transfer between the HX system water and the main “steam” part of the boiler varies with temperature, but is not instant.
- An HX continually circulates
- If the main boiler autofills
- shots are done causing a perturbation in the system, which can last longer than you think
- When the machine has warmed up sufficiently to pull shots, it’s still not necessarily stable
- A system is truly stable if it’s been left for about 40 minutes after any activity
- The steam boosts will vary depending on which point of the temperature curve it sees when it responds, any deltas and how long it’s responded for. e.g. it doesn’t simplistically say, shot pulled = steam boost to 122 for 100s It’s more complex than that.
All of these things affect the readings…. and can be a reason why an HX temp of X, doesn’t always equal a manometer pressure of Y
That thing I had stuck onto the front of mine allowed me to monitor all the temps and what it was trying to do.