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Need to choose from many different sensor technologies to detect if spray nozzles are clogged or not.
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By John Catch on 24 May, 2013 - 10:55 pm -
A small venturi could be made that would have low pressure drop. There are a number of PCB level DP...
what is interposing relay
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By Steve Myres on 24 May, 2013 - 4:21 pm -
You have the idea, assuming you're not thinking that the interposing relay MUST be an ice cube...
Thanks Steve. I understand what you're saying, I assume this is just a question of semantics. The...
By Steve Myres on 22 May, 2013 - 12:36 pm -
The phrase "interposing relay" is describing the relay by it's purpose in the system...
Is there a difference between an interposing relay and say an "ice cube" relay? I'm...
Stepping motor is not homing when command is issued through MMI program.
from the OPD Data Acquisition and Reporting department...
Release of Genesis 1.2, OPC Data Acq FreewareGenesis 1.2 is the last release of a freeware used for OPC data acquisition, data saving (as csv) and data charting.
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Genesis OPC Explorer 2.0 is a Free OPC Client for connection to OPC Servers, data acquisition, data...
linux base com port communication
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I just added TCP/IP capability and put it on a new web page:
http://www.ctrlterm.com/
...
Here are some simple open-source zips I just updated a couple of days ago:
...
By Jack on 7 May, 2013 - 4:12 am -
> Need a simple linux command to control simple application in external MCU like
> LED...
Looking for OEE module to be embedded in IP21 databases, for a major company in a worldwide deployment.
Want to calculate the total voltage drop in a 600 meter long cable carrying 150A
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From: http://en.wikipedia.org/wiki/Voltage_drop
Voltage drop = 2 * length in meters * resistance...
Third party communication with PCS7
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By Fred Loveless on 9 May, 2013 - 1:45 pm -
Any SNMP Manager software can do this. Kepware has an SNMP Client driver as part of its IT suite....
Need help for interfacing Tatsuno Lobe Flow Meter to PC.
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In the Tatsuno Lobe Flow Meter Datasheet only contains information that interfacing using 4-20mA...
Replacing two 2-way control valves with one 3-way control valve
Anyone know what is "26" meant in Mitsubishi Special Type Inverter?
What would you suggest to use as a cabinet fan alarm?
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By Steve Myres on 4 May, 2013 - 1:59 pm -
I'd suggest either a photo that looks through the blades (conveyors detect jams this way with a...
By Curt Wuollet on 3 May, 2013 - 6:34 pm -
Take a close on rise thermal disk switch, attach a 1watt metal film resistor across the power...
By Curt Wuollet on 3 May, 2013 - 6:25 pm -
Reflective photo sensor and a zero speed rung.
Regards
cww...
By Bob Peterson on 3 May, 2013 - 2:24 pm -
There are fans that have a built in sensor that gives a pulse train output that can be monitored to...
Can a windows virus also infect a PLC?
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This can, and has, happened. I have an ICS cyber incident database with many cases of Windows...
How to get a ROS (ROBOT OPERATING SYSTEM) connected to a TWINCAT PLC so they both talk to each other
Using ultrasonic flow metering for steam.
looking for books about Panel Design guide
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By Bob Peterson on 27 April, 2013 - 11:34 am -
Like many things in life there really are no effective short cuts to learning. You cannot learn to...
Measurement errors in Allen Bradley MicroLogix RTD cards
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I've had to 'calibrate' one PAC controller (not an AB uLgx) at its working temperature in its very...
By Curt Wuollet on 26 April, 2013 - 1:01 pm -
And that type of accuracy depends on an extremely clean, to the letter wiring scheme.
Further,...
By Bob Peterson on 26 April, 2013 - 10:19 am -
There are different RTDs that have slightly different curves and I have run into cases where I...
Where to get a flow meter either softwareless or qualified
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By John Catch on 24 April, 2013 - 7:21 pm -
PEF,
It appears that an LFE (Laminar Flow element) with a suitable DP transmitter could work for...
Would you say that testing of interposing relays is important outside of the nuclear industry?
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By Bob Peterson on 19 April, 2013 - 2:45 pm -
My question what benefit is there to testing interposing relays? They are no more or less likely to...
How to bring GT from Base load to Full speed no load manually??
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By Greg Ponto on 19 April, 2013 - 8:32 am -
Sriram,
try selecting "Stop" and as soon as the generator breaker opens select...
please share your views on the MV Drives business in India,
I am doing a market research report for India...
I am doing a market research report for India...
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Hi NKS,
India is always a Growth Region market having huge potential for MV AC Drives.
...
from the Electrical engineer department...
Medium Voltage Variable Frequency Drive to Control the Speed of MotorI am electrical engineer by profession and currently I am doing research on medium voltage Variable Frequency drive (also called as VFD, VSD, AC drive, VVVF, etc.)
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Dear Gopi,
Please contact me at balla.venugopal@gmail.com
Thanks,
Venugopal Balla
Mumbai, India...
from the Instrumentation and control department...
Back Pressure Control Mode In Toshiba steam turbine D-EHC control systemWhat is the Back pressure mode in Toshiba steam turbine ?and what is the running condition for this mode?
what is the accepted margin between motor power and pump-maximum power?
Looking for someone with experience migrating from a DPC 3330 as a "data concentrator" to a Controlwave Micro with ifix and the BR3 Driver.
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By Robert Dusza on 12 April, 2013 - 3:50 pm -
Sorry about the delay in getting back to you.
Make your poll periods for the field devices 3...
HMI suitable for Purge Panels (Class 1 Div2)
Can a XBT-L1000 file be converted to a Vigeo Designer file?
difference between the command with 'discrete output function block' and the 'device control function block'
I need some help with selection of air velocity and temperature sensors & actuators that will work on hard environmental conditions inside the air-duct.
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By Bhavesh on 5 April, 2013 - 9:09 am -
Hi,
For temperature sensor, it should be kept in mind that high air speed and that too with sand...
Communication over Ethernet from Power Meter to remote server
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Tony,
It's an option, but not necessarily secure and usually not cheap. If it's just plain old...
By Tony on 3 April, 2013 - 3:45 am -
Hi
Why not to add a GPRS IP Modem to the Meter, then its data will be sent to Server through GSM...
Up to how much low rpm can a BLDC motor be designed?
from the merry-go-round department...
Choosing an encoder and a PLC for a high-precision rotary tableI need to choose an encoder and a PLC to make a rotary table that could be positioned with precision of about 60 arcseconds.
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Control Technology Corporation (CTC) has a controller with built-in motion control to handle the...
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