Voltage being pulled down in IO panels.
Why Fuse Both Legs in a DC Control Cabinet?
Why would you want to fuse both the positive and negative side of a 24VDC control circuit?
By CuriousOne on 19 August, 2015 - 10:38 pm
grounds can occur on both sides of the contact. floating power supplies allow one to troubleshoot...
Re-Calibration Flow meter using DP
How to change flow range, and how to calibrate the pressure transmitter range?
By saif ul islam on 30 August, 2015 - 1:55 am
Can we use the same orifice? or we have to change the orifice plate? > 1- Has the Orifice...
Replacing a 25 Amp Single Pole Contactor
Replace a 25 amp single pole contactor with a 30 amp single pole contactor.
By W.L. Mostia on 29 August, 2015 - 12:10 pm
I would add that your heat pump is a motor load so your contactor must also be rated for a motor...
By Steve Myres on 28 August, 2015 - 6:03 pm
> Can I replace a 25 amp single pole contactor on my heat > pump with a 30 amp single pole...
How Does The Output Of The Pid Controller Remain Non-Zero?
How does the output of the PID controller remain non-zero after the error becomes zero?
By Peter Nachtwey on 24 August, 2015 - 7:00 pm
There are non-integrating and integrating systems. Temperature and velocity control are...
By BDThompson on 21 August, 2015 - 9:57 am
If your output is non zero after the error reaches zero, your integrator (the I term in PID) has...
4 - 20 ma Length Calculation
Is there a certain calculation that I can use to find out what size Wire to use with a 4-20ma signal?
By Bob Peterson on 27 August, 2015 - 4:24 pm
Ohm's law. the analog input will have a certain dropping resistor, and the wire will account for...
P Level Control of Multiple Tank System
PI or PID liquid level control system for 2 to 4 tanks.
Torque Tube in Displacer Type Level Transmitter
What is the need for torque tube in displacer type level transmitter?
By Miky on 26 August, 2015 - 4:54 pm
> What is the need for torque tube in displacer type level > transmitter? It's working. ...
I'm not getting back in my HMI application.
I have an application using "Factory Talk View SE 6.0" I'm not getting back in my HMI application. I'm using "HMIBackup" During the backup the following message appears:
Interact HMI Driver Problem
I messed up and DOS HMI for a machine at my business. The PLC does not communicate properly back to the XP-based DOS emulator. I am in deep shit if I cannot fix this.
By Brendan B on 25 August, 2015 - 3:06 pm
> Sounds like the HMI is talking, but not receiving. Has the > comms wiring changed at all....
By Brian Beal on 24 August, 2015 - 10:16 pm
Sounds like the HMI is talking, but not receiving. Has the comms wiring changed at all. Take a...
Orifice Plate Sizing and Thermowell Sizing
Calculating orifice plate sizing and determining thermowell size
Watermist application for Turbine hood
Posted by S.Vadhooth on 17 June, 2004 - 5:41 pm
we have a project for installing watermist system for an existing 20 year old Turbine hood...
By Kilfuddie on 24 August, 2015 - 5:24 pm
>http://www.fogtec.com I note from other Google search results that IP24 has been tested with...
AC 110V solenoid valve vs. DC110V
Posted by reza heydari on 8 March, 2007 - 11:07 pm
AC 110V solenoid valve vs. DC 110V
By Curt Wuollet on 23 August, 2015 - 9:46 am
This can also happen to contactors. I've seen a coil replaced several times before anyone...
By Rob H on 19 August, 2015 - 9:39 pm
I have worked in industry for years and one of the first things I came across was a burned, melted...
11kv Motor Failure Checks
High tension motor failure
Gas Flow Rate for Gas Engine
can some tell me how to calculate gas flow rate to run an engine?
How do you measure correct level under vacuum?
By Daniel on 22 August, 2015 - 8:09 am
Cerabar is not for tanks under vacuum. You have to use a differential pressure model, like...
Flow Measurement Using Load Cells
Measuring the flow coming out of a vessel using only a load cell to control a valve.
7FA Gas Turbine Crank Cooling
Is it recommended not to crank cool a 7 FA Gas Turbine too many times. We do a lot here for maintenance. Is there a limit?
By Akram M. ALRAZEHI on 18 August, 2015 - 1:58 pm
Does anyone know what is the maximum allowable duration after shutdown of gas turbine before...
Cold Junction Compensation for Thermocouple (I/O card: BMXART0814)
Need some suggestions regarding selection of CJC (cold junction compensation) for TC
Controller Design for an Exponential Plant of the Form y=a*exp(bx)
PID control for plants of the form y = a*exp(b*x)
Oil in Water Detector - Gross Measurement 0-10%
Detection of roughly 5-10% of oil in water. Looking for a solution which is: Simple, online, insertion type, cheap, IECEx hazardous area certified.
Centrifugal Pump Current Trending
Can choking in the downstream equipment be detected by current (Amps) trending?
By Steve Myres on 16 August, 2015 - 2:15 pm
Unless it's not feasible for some reason, I'd go with either discharge pressure (if pump inlet...
By CuriousOne on 16 August, 2015 - 12:00 am
On a positive displacement pump, perhaps. but on non-positive displacement pumps, heat and...
Balluff linear transducer failures
Anyone experienced Balluff linear transducer failures?
By Bernd Schneider on 11 August, 2015 - 4:03 am
Dear julekogurek, Balluff is providing a global service network. We kindly ask you to contact...
Starting an Induction Motor with Rotor Already Rotating from External Means
Posted by Stormrider on 6 August, 2015 - 3:08 pm
Can I start a Squirrel cage Induction Motor with rotor rotated by external means over half its rated speed?
Multiple Effect Evaporator Control Strategy
Trying to decide best strategy for controlling a Multiple Effect Evaporator
I would like to know the operation of positioner.
Strategy for Controlling Valves
About two valves in series configuration over a discharge pipeline.