1. one-way working mode: when "DS-A temperature - DS-B remperature" is greater than the set temperature difference value, the relay A works, can start related equipment by this relay.
When the temperature difference is less thean "the preset temperature difference - return difference", the relay A is disconnected, and the related equipment stops working. DS-B is greater than DS-A, the relay does not work.
2. Two-way working mode: when the absolute value of the temperature difference batween the two sensor is greater than the preset temperature difference, relay A works, can start the related equipment by this relay.
When the temperature difference is less than "the preset temperature difference - return differnce", the relay A is disconnected, and the related equipment stops working.
Set example 1: solar hot water circulation, high temperature probe - low temperature probe >5.0 degrees, relay works, the differe returnto 4.5 degrees, the relay disconnected. the Low temperature probe is larger than the high temperature probe, and the relay does not work.
Set the temperature difference is 5.0 C, the return difference is set to 0.5 degrees, the working mode is to PP 1.
Set example 1: Air convection cycle, difference between the two probes >3.0 degrees, relay works, the difference return to 2.7 degrees relay disconnected. Low temperature.
Set the temperature difference is 3.0 C, the return difference is set to 0.3 degrees, the working mode is set to PP 2.
Note: it was originally two relay design, 4 white terminals of lower right corner are all welded, but cause a lot of buyers to connect. the wrong line, so to avoid connecting the wrong line, we now only weld a relay and a white terminal, completely feasible available.
Press the set key, the yellow light starts to flash, the display screen displays the setting temperature difference, according to"T++T--" to set the required temperature difference value. display templates such as 7.1C.
Press the set key, the yellow light starts to flash, the display screen displays the setting temperature difference return difference, according to"T++T--" to set the temperature difference return difference. display templates such as H 1.2.
Press the set key again, the green starts to flash, the display screen displays the working mode, according to"T++T--" to set the mode. diplay templates such as PP 2. PP 1 represents one-way working mode, PP 2 represents two-way working mode.
Press the set key again to exit the set, LED all off, showing the actual measurement temperature, the system automatically save the settings parameters, began to enter the work.
Special note: after set. T++,T-- key settings, without any key action within 4S, the system automatically save the current settings of the parameters, and then show the measurement temperature and enter the work mode. long press the button, the key value automatically increase.
Package includes:
1 x Temperature Difference Controller Relay Moudle
2 x Sensors