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With exhaust temperature measurements,in my experience what I found while doing root cause analysis for a diesel engine power plant was that the failure was mostly after a major shutdown was taken and during the removal or installation of thermocouples. Generally the nut and the ferrule, due to...

The sensor span limit is dependent on what is after '3051CD'. It varies from '0' to '5'. A little search on the internet and reading the manual will give you all the details requiring the max. span range of the instrument.

No honestly I am unable to understand the situation. I dont understand from where you are getting the 'deg' reading and from where you are getting the 'feedback' reading...??? You said in your earlier post that the feedback is taken from a LVDT position f/b transmitter...so now from where are...

What does the first out alarm & SOE readings say? You are saying that the flame intensity is going down...so if we consider your flame scanners to be correct, so that means obviously the fireball inside the furnace is not stable and that is the reason why the flame intensity is dipping...also...

I said about the position feedback...check the current in series and whether it matches or not with the actual actuator position in the field.If not, then there is a problem with your position feedback transmitter. LVDT plunger sometime tends to get stuck. Also they are generally indirectly...

Why should furnace pressure drop before tripping???? If it is a balanced draft boiler, a drop in furnace pressure means either the fd fan's flow drops or the I'd fan's suction increases ( part of draft control) or if the Fuel flow drops which is a part of combustion control...and if it is a...

Is it a sipart ps-2?? I hope the settings of your positioner is accurate as sipart positioners are very setting and calibration sensitive. Once set correctly, they work without any hassle but if done incorrectly they become a nightmare. With sipart positioners, if a 100% command is given, and...

Dear Hadi, After going through your docs and with my experience and to the best of my knowledge, whatever you are expecting that during a load cutout from 11 MW to 1 MW that the turbine should still be running without over-speed is just not possible. Generally for this type of application a dump...

First I want to ask one question to you...what is the minimum point in the load curve at which extraction has to be enabled and the maximum load that can be generated with extraction disabled. Because with all extraction turbines, electrical load cannot be increased after a certain point...

Has the motor cable been checked for proper insulation resistance??? 2340 indicates a phase to phase short...

Did you do an interference echo mapping??? If yes , cross check again that you have saved it and to use it as a reference curve.... See the whole point of using a still well is that the high frequency waves are guided by the still well to reach to the level of the actual process media present in...

What is the size of the transmitter/antenna size?? And what type of antenna is it??? What is the measuring height of the tank?? What is the process medium that you are measuring?? Is the tank bottom a flat face or dished out?? The difference in measurement as you said in your first post...is it...

Check in RsLinx if all the connected devices are being shown...204 indicates a timeout request...generally power recycling solves the problem.

Well it can be reached without "fighting"...but there has to be some way of letting the governors of the prime mover's to know of what is to be done..in other words there has to be full communication between governors. I will share a bit of my experience with isochronous controllers. Wartsila...

Check whether the still well fabrication specs and the beam angle of the radar transmitter as recommended in the manufacturer specs, is in line as per the site installation. Also be fully sure that the manual gauge glass reading is correct or not. If you have any other way of checking it...

When more than one isochronous speed systems is operated in parallel, they generally have load sharing lines connected from governor of one engine to the governor of the other engine to share load equally.

To me this looks like that the fitting must have been through some undue stress as the point of failure is around the nut and ferrule which bites onto the tube for the sealing. The different causes for the failure might be 1. Over tightening of the fitting- Generally a rule of thumb for 12mm or...

Check with anybus or prosoft...they have numerous products...have a talk with their personnel.

It is written input impedance, which means it is the resistance which the card will offer to the loop. We also have Rockwell Systems,though not this card specifically. In the datasheet of the cards which we have in our plant,similar input impedance specs are provided and also we do not connect...

Well this is a trip solenoid valve (tag provided). During normal operation of a turbine they remain energized so that hydraulic fluid can pass though them and opens the spring loaded emergency shut-off valves for steam to enter the nozzle chest of the turbine. During any abnormal condition or a...