Method/step: 1. Select the pressure controller (JC-2 10, HNS-2 10), and the set value ranges from 0. 1 to 1.0 MPa?
2. Turn the pressure adjusting screw on the right side of the top to make the pointer point to 0.8Mpa(8kg or 8bar) of the scale, which is the upper limit switching value. ?
3. Turn the pressure adjusting screw at the upper left to make the pointer point to 0.3Mpa of the scale.
Lower switching value = upper switching value-switching pressure difference =0.8-0.3=0.5, which is the lower switching value. ?
4. Connect the terminal of the controller to the controlled circuit. Please note: ① It is a male connection. ③ Constant start output. ⑤ is normally closed output. ? For high voltage protection, please connect ① ⑤. During normal boosting, ①-⑤ will be connected (①-③ will not work). When the pressure rises to the set upper limit, namely 0.8Mpa, ①? -⑤ No connection (⑤-⑤ connected). When the pressure drops, ①-③ is connected at this time, and when the pressure drops to the lower limit set value of 0.3Mpa, it is switched to ①-⑤ (①-③ blocked). When the depressurization stops and the pressure rises, it will automatically circulate. ?
5. Turn on the power supply and increase the pressure of the controlled medium (water and gas). Please pay attention to observation and adjustment, so that the set value of the pressure switch is consistent with the indication of the pressure gauge. (For example, when the pressure rises to the upper limit setting, the switch has not yet acted, that is, turn the pressure adjusting screw, fine-tune it until the switch acts, and repeat the verification once again) and verify the lower limit. The process is the same as above. (Repeated verification for several times) Fix the pressure adjusting screw and differential pressure adjusting screw on the top of the iron shell of the pressure switch with red paint.