Summary In the light of EJA intelligence double flange difference pressing changes send implement specific application circumstance, introduced the detailed processing technique of its model breakdown. Carry out a proof: Be applied correctly only and safeguard, ability makes sure the long-term stability of appearance moves.

Keyword Intelligence changes send implement Breakdown Communication

0 Foreword

The spot intelligence that is based on microprocessor changes send implement change with convention send implement photograph comparing, have precision tall, dependability tall, stability is good, measure wide, span compares limits to wait for a characteristic greatly. Have already with the DCS system that has identical communication agreement or spot communication controller, set implement have data communication function, again pair of intelligence change send implement all sorts of parameter undertake modification, set, implementation is long-range mode, into machine dialog, online monitor wait for a function. With all intelligence appearance, intelligence changes send implement still have diagnose a function relatively perfectly oneself.

1Difference of EJA intelligence double flange is pressed change send implement typical breakdown

Difference of EJA intelligence double flange is pressed change send implement the product that is limited company of electric machinery of Japanese horizontal river, in n oil one factory, this product by the many liquid that is used at tower, canister, container measure. In use process, because use a method undeserved and caused more trouble, use what affected appearance badly normally. The author did much analytic research to real trouble, discover its breakdown basically has the following 3 kinds:

① Measure exceed those who be restricted to cause not to have indication value.

② Do not deserve to cover with safe 柵 , cause loop to not have measure signal or signal on the low side.

③ Cannot correspond with DCS.

The processing technique of 2 typical breakdown

2.1 exceed bounds processing technique to measuring

Through studying an analysis, discover this kind of breakdown concerns with the following element normally:

① Appearance operation is used undeserved

With n oil C of device of benzene of one factory ketone - system of 101 fluid position control (LICA-1201) for exemple, if the graph is shown 1 times, because appearance is in from beginning to end tall fluid (100 ％ above) move, or appearance is in from beginning to end low fluid (5 ％ are the following) move, make appearance directive is restricted to exceed likely. Accordingly, requirement craft operates personnel to should ask according to technological process and technology control correct judgement goes out is instrument malfunction or technology operation undeserved. So, need technologist and appearance safeguard personnel to cooperate closely, make sure craft medium can measure range in appearance inside, avoid to make operate personnel mistake to be instrument malfunction.
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