Humidity/Airtemp control

**ibsandor** · 10.02.2013, 11:30

Hello!

I would like to use an airtemp/humidity sensor to control the freshness of my room air, as the skimmer produces a mass amount of humidity and in winter times it condensates on the windows. I can get fresh air from the attic (family house) with a fairly quiet pc fan. My question is, that how can I control a 0-10 V port with the humidity (like at the temp sensors for propeller control) in order to get the most quiet setting?

I have a 2nd question: since a fw update the 1-10V port gives out current even if the sensors current value is under the nominal value. This means that in event of an electricity cut off the water cools under the nominal value of 26 C, eg to 24 C. If the "1-10V-output is maximum at deviation of" 2 C is set, I will see in the affected "1-10V interfaces" menu that the output works on -10V (minus ten volts), meaning that the chiller fans working on max power. It's very annoying...

***Matthias*** · 16.02.2013, 11:22

1. I am not sure what the problem is - set the L-port you want to use to "airtemp 1", that's it

2. if the current value is under the nominal value the L-port outputs a "negative" voltage, this is correct
since the interface can only output positive voltages the relay-signal is used to indicate the sign (+/-) of the voltage
our PropellerControl understands this and reacts correctly

do you use our PropellerControl or something else?
is the firmware up-to-date?
are all jumpers set in the PropellerControl?

**PurePleX** · 09.06.2013, 15:05

I'm going to use the humidity/temp sensor in a similar way (to control the parameters of the room), but would like to do so in several rooms/enclosures. How many humidity/temp sensors can I add to a Profilux 3 Ex (with extension boxes, so free expansion are no problem)?

Also (since I subscribe to the notion that there are no stupid questions): for the level1/level2 input on the Profilux (that requires a split cable PL-LY PL-0081) does it matter if I plug the splitter into the Profilux and then two extensioncords to my level sensors, or one extension cable into the Profilux and the splitter at the distal end of the extension cord. I know, stupid question, but I don't know if it matter for calibration etc...

Tx,