Pressure changes send implement type selecting, installation is basic common sense

One, pressure changes send implement type selecting pressure changes send implement it is the metrological implement that pressure variable changeover is the standardization that can convey one kind to output signal, and there is one between its output signal and pressure variable given successive function concerns (it is linear function normally) . Basically use at the measurement of parameter of industrial procedure pressure and control. Use a requirement to ensure the product that you select accords with the spot, the following content consults to undertake please when type selecting: 1, affirm the type that measures pressure. Pressure type basically has gauge pressure, press absolutely, difference pressing; Gauge pressure is to show with atmosphere force is fiducial, be less than or be more than the pressure of atmosphere force; Be being pressed absolutely is to show with absolutely pressure null is fiducial, prep above is absolutely the pressure of pressure null; Difference pressing is to show the difference between two pressure is worth. 2, affirm measure range. Usually, by measure pressure actually to measure range 80% choose. 3, the biggest overload that affirms a system. The biggest overload of the system should is less than change send implement overload protects the limit, the service life that can affect a product otherwise damages even product. The standard that the 2 times overload protection that measures range is my company product is configured (also can ask to undertake according to the client custom-built) . 4, affirm accuracy grade. Change send implement measure an error to undertake differentiating by accuracy grade, the intrinsic error with different accuracy different correspondence is restricted (the percentage that outputs with full span expresses) ; In applying actually, the principle that ask according to measuring the control of the error and acts on applicable economy undertakes choosing; My company product is offerred at present 1.

0 class, 0.

25 class, 0.

5 class, 0.

1 class grade of 4 kinds of accuracy. 5, affirm working temperature limits. Measure medium temperature to should be in change send implement inside working temperature limits, if overheating is used, will produce bigger measurement the error affects service life; Change in pressure send implement in producing a course, can undertake measure and be compensatinged to temperature influence, inside the range that measures an error in order to ensure the product suffers what temperature influence arises to be in accuracy grade to ask. In temperature taller circumstance, can consider to choose high temperature pressure to change send implement or adopt installation condensation to be in charge of (implement) , radiator auxiliary drop in temperature measure. 6, validate the compatibility that measures medium and osculatory material to pledge. In certain measure a situation, measure medium to have caustic, need to choose right now with measure medium compatible material or undertake special technology is handled, ensure change send implement be not damaged. (of material choose consult please this manual the 34th page " change send implement contact medium share data choose reference " ) . If be measured,medium is hydric, my company is useful still the special product that enrages pressure at measuring hydrogen. 7, affirm pressure interface form. Our product with threaded coupling (M20 × 1.

5) for standard interface form; The interface of other form is OK according to example the 32nd page " pressure connect " one column is chosen. If client need other is special,receive form of degree of lip-rounding, but according to client asks to undertake designing production. 8, affirm power supply source and output signal. Our product uses power supply of direct current source, offer alternative of signal of 4 kinds of output, include 10VDC of 5VDC of 4 ～ 20mADC, 0 ～ , 1 ～ 5VDC, 0 ～ . 9, affirm circumstance of spot work environment and other. Need understanding to whether be put in vibration and electromagnetism interference to wait, provide pertinent information when type selecting, so that adopt corresponding processing; When type selecting, other wait to also should give according to the circumstance like electric join means consideration. 2, pressure changes send implement installation 1, ask before installation read product operation instruction handbook carefully, check the pertinent information of the product. 2, change send implement should install at ventilated, dry, without corrode, shady and cool place, if outdoor installation should add shield, avoid sunshine illuminate and drench, avoid to change send implement function is reduced or appear breakdown. 3, change send implement belong to accurate instrument, install impact of Shi Jijiang force, beat. 4, join correctly by hookup. 5, notice protection changes send implement derivative cable. When industrial spot is used, assure of proposal use metal is protected or built on stilts. Do not shake the sealed screw cap of cable terminals, avoid humidity to enter. 6, cleanness changes send implement pressure interface and bring press Kong Shi, should use 3 chloric ethylene or alcohol infuse to bring in pressing aperture, and gently rock, again liquid teem, relapse for many times so. Any appliance extend taboo to bring in pressing aperture, injure sensitive core body in order to avoid. CNC Milling