When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience.
Because we respect your right to privacy, you can choose not to allow some types of cookies. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.
You Allow:
Strictly Necessary Cookies(Required)
These cookies are necessary for you to browse our website and use its fundamental services,and they don't require your consent.These cookies allow us to offer you the essential functions of the website(account access,language used,order played,payment etc),and can also be used for identity verification and security.If you disable them,we will not able to fulfill your basic request.
These cookies collect anonymous information on your online operation behaviors that help us improve website construction. If you reject these cookies, you may not be able to use certain features of our websites and services.
These cookies allow us to remember the choices you have made about your preferences, such as what language you prefer. If you reject these cookies, you may feel that the efficiency of browsing the web has decreased.
These cookies carry out personalized activities to advertise products and services which you are interested. If you reject these cookies, you will still see advertisements that are not much relevant to your interest or demand.
samtree In the manual it says “Setting the hysteresis parameter P1: This sets how much change in temperature must occur before the relay will change state. For example if set to the default 2oC and the the trigger temperature has been set to 25oC, it will not deenergise until the temperature falls back below below 23oC. Setting this hysteresis helps stop the thermostat from continually triggering when the temperature drifts around the trip temperature.” Well, this is wrong. When in C (cooling) mode, the relay is energized (closed) when the probe temperature reaches t = Trigger Setting + Hysteresis setting (P1) and de-energizes (opens) when while going down (cooling) it reaches t= Trigger Setting. So, in the example given in the manual, the relay will close at t=25+2 = 27 Celsius, and will open again when t=25 Celsius is reached. Now, for the question asked: Set Trigger Temperature at 4 Celsius, and Hysteresis (P1) at 3 Celsius. It will close at 4+3 = 7 Celsius, and open again at 4 Celsius.
Helpful (1)