The pressure control monitor (hereafter refers to as the instrument) is a new kind of automatic control instrument that carries out the pressure indication and the controlsimultaneouslywith the aid ofthe displacement of elastic elements under pressure. Since it adopts the dual elastic elements to carry out the pressure indication and the control respectively, its precision rises substantially. At the same time, it has many advantages such asreasonablestructure, highcontrol precision, steady reliable,superioranti-seismic performance and large contact capacity, convenient to use and install as well as adjustable on-the-spot.
This instrument is suitable for one or two type control to the amorphous substance with no explosion hazard and the coagulate mediumwithout corrosiveness.
三、主要技術(shù)參數(shù)(Main technical parameter):
1. 規(guī)格(Specifications):單位為MPa(The unit is MPa)
The instrument is composed of elastic element, control mechanism, adjusting mechanism, indicating device, watch case and wiring box and so on.
Its working principle is:Under the medium pressure, the spring tube terminalproduces displacement. When pressure reaches the control value set, the jogging switch is promoted to produce instant switch movement. This makes the electric circuit in control system on-and-off so that the purpose of automatic control or sending out the signal is reached.
Connect the instrument and the precise manometer (your own manometeravailable) on the pressure checking table. Then connect the power source according to the following drawing:
所用材料(Materials to be used):1.5V電池兩節(jié)(two 1.5V batteries)3V燈泡二個(gè)(two 3V light bulbs)
Raise the pressure and insert the screwdriver to the adjustment window hole. Adjust the setting value by turning and twisting the adjusting screw. When indicator light produces instantbright or extinguishes, the pressure value thatthe indicator indicated should happen to be the setting value.
After the setting value is adjusted and theinstrument is packed, or when theinstrument is in use, if the indicating valuedeviates thesetting value, theinstrument can be adjusted on-the-spot by using its indicating device.
3. 儀表的選用(Instrument selection):
選用儀表時(shí),應(yīng)按其使用的大壓力值再加三分之一進(jìn)行計(jì)算選用。
The instrument should be chosen by calculating the maximum value of its use plus 1/3 of this value.
In the process of using, the instrument should be kept dry and cleanfrequently, and should beoverhauled regularlyso as to ensure that it works accurately and reliably.
六、安裝尺寸圖(Ⅵ. The Dimensional Drawing of Installation):