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Sensors
Topic: Sensor technologies.
from the Instrumentation department...
Load cell output mV linearity
Originally posted by Pradeep on 28 September, 2014 - 5:16 am
Whether load cell output in mV will linearly increment according to weight added to it?
New Replies:
In case of zero load, the load cell is showing some mV output with supply voltage - whether this...
Ideally, yes, but . . . . A load cell is ratiometric, that is, its output is proportional to the...
Originally posted by Sakthi Venkatesh on 27 September, 2014 - 5:00 am
After calibrating, why we are reversing the range for Level Transmitter while measuring Level?
New Replies:
In the old days when we used electronic and pneumatic DP cells we had to swop the HP and LP legs...
or you may do one more thing, consider the range from -2500 to 0. that is what we usually do in our...
the DP cell is put in reverse to calibration (L side of meter is on bottom tap and H side is on top...
Topic: PLCs and related questions.
from the Forum department...
Contactless Card Reader and PLC
Posted by Amer on 26 September, 2014 - 3:30 am
How to connect contactless card reader to PLC?
Topic: Sensor technologies.
from the Maintenance department...
Speed sensor problem
Originally posted by Jim on 25 September, 2009 - 7:30 am
Problem found in measures with passive magnetic sensors in a over-speed trip system.
New Replies:
Hello Bryan. Thanks a lot for the link. The site is very helpful and informative. Cheers....
> Have you found out the cause(s) to this problem Jim? We did identify what we feel is the...
Have you found out the cause(s) to this problem Jim?...
Topic: Engineering and workplace issues.
from the Automation Safety department...
AB or Siemens Equivalent Safety Product as Sick Flexi-Loop
Posted by Weida on 23 September, 2014 - 11:49 am
Is there any Allen Bradley or Siemens safety product that has similar modular capbilities as Sick's Flexi-Loop system?
Topic: Sensor technologies.
from the control department...
4 wire vs. 3 wire RTD
Originally posted by KAKIL on 3 October, 2007 - 12:00 am
What is the difference between 4 wire RTD and 3 wire RTD?
New Replies:
3 wire is more than adequate at that distance. your vendor can better inform you as it depends...
For a 10m cable, which is the best options? 2 wire/3 Wire/4 wire RTD. I am going to test the...
There still seems to be confusion is some areas so I will do a summary of all the questions asked...
Topic: Sensor technologies.
from the seeking product recommendations department...
Modbus TCP temperature monitor
Originally posted by mooseo on 28 February, 2011 - 2:09 am
I'm looking for a product recommendation
New Replies:
See there... http://pcsensor.com/index.php?_a=product&product_id=109 Moderator's...
I am looking for much the same thing, a simple temp and humidity for my server room. I just want...
Topic: Sensor technologies.
from the instrument department...
Gas Chromo readings
Originally posted by duks on 10 September, 2014 - 3:17 pm
Retention time of gas chromo
New Replies:
To the Moderator, In regards to the statement: "Moderator's note: I think...
the flow volumes in a gc are rather small, so any excess volumes in tubing and valves can result in...
Topic: Engineering and workplace issues.
from the Calibration department...
Rosemount 3051 Calibration
Originally posted by josh0206 on 22 June, 2014 - 3:39 pm
Rosemount 3051 Calibration
New Replies:
Yes. 12-117 in wc....
So if I go through the zero suppression that would be like me rearranging it from 0-105" H20...
Topic: Sensor technologies.
from the Instrumentation department...
ABB Flowmeter -Flow Data Is Less
Originally posted by sandeep on 11 September, 2014 - 6:27 am
flow meter data is less compared to other flowmeters
New Replies:
what are the units for the 20 mA value? how long does it take for the 1 meter level change?...
Hello Walt 4-20mA output from the flowmeter is taken to SCADA (Labview) through PLC (Schneider) ...
>> "flow meter data is less compared to other flowmeters" >other flowmeters? ...
> 1) Is this a new installation or a new problem with an existing, previously satisfactory...
Couple questions for you. Which output are you using, or are you looking at a totalizer on the...
> "flow meter data is less compared to other flowmeters" other flowmeters? ...
1) Is this a new installation or a new problem with an existing, previously satisfactory...
Posted by farid on 11 September, 2014 - 10:13 pm
Vendor converts input signal before 1900/65A and convert back to same signal at the output
Topic: Sensor technologies.
from the instrument department...
Level Transmitter on Condensate Drum
Originally posted by rosemount on 10 September, 2014 - 2:20 pm
Erratic reading for level transmitter on condensate drum
New Replies:
You are really not giving much for us to work with so if the assumption I am making is wrong it is...
There's nothing wrong with the transmitter, it's accurately reporting exactly what's happening -...
to address your question with any meaning, you need to furnish the detailed vessel drawings, and...
Topic: Power generation equipment control.
from the INSTRUMENT department...
Gap Voltage and Radial Vibration
Originally posted by RAJESH on 4 September, 2014 - 2:11 pm
If gap voltage in radial vibration is set at -11v dc, will it make any difference in measuring radial vibration ie. its dynamic value mm/s pp?
New Replies:
thanks...
Rajesh, setting the gap voltage at -11VDC rather than -10VDC will have no effect on the dynamic...
If the setting is say at -13 vdc instead of -10 vdc it will make any difference in radial vibration...
no > Due to setting at -11vdc instead of -10 vdc it will make any difference in radial...
Topic: Sensor technologies.
from the Instrumentation Design department...
Using a Standpipe with DP Level Transmitter
Originally posted by TANWEER on 3 September, 2014 - 8:57 pm
Can we use a standpipe with a DP type level transmitter?
New Replies:
Stilling wells are inside the tank or vessel, so getting an impulse line to connect at the bottom...
I am assuming your question is if you can use a DP transmitter on a standpipe. If that is the case...
Topic: Power generation equipment control.
from the Need Help department...
Need help with Swirl Chart for Siemens 501F
Posted by ncc on 4 September, 2014 - 8:00 am
We need references for determining the swirl for a 501F engine to match thermocouples to combustor basket.
Topic: Engineering and workplace issues.
from the Instrumentation and Control department...
Self Actuated Pressure Control Valve
Originally posted by Anil Bathra on 21 August, 2014 - 8:58 am
What happens when Upstream pressure of Self actuated pressure control valve (downstream) is less than set Pressure?
New Replies:
The application I am familiar with is where we have used these valves to control the fire ring main...
Topic: Sensor technologies.
from the Instrumentation and Control department...
Level Transmitter for Submersible Pump
Originally posted by Anil Bathra on 3 September, 2014 - 9:50 am
Which level transmitter will be the best choice for measuring the level of a well of 400 m depth?
New Replies:
Something I have done before was to make use of a submersible sensor and connect a 4mm steel cable...
Any one that goes deep enough. The question is, how deep? GE Druck's PTX 1730 says it does up...
Topic: Sensor technologies.
from the Forum department...
Running Analog Signal
Originally posted by jmgusmer on 26 August, 2014 - 6:34 pm
I need help with running analog signal alongside some 110 lines
New Replies:
I agree with allot of the responses so far. If at all possible, try to keep the 4-20ma signal...
Topic: Sensor technologies.
from the Instrumentation Engineers department...
Wet Leg Carried Over Problem in Differential Pressure Transmitters
Originally posted by Shaiq Bashir on 31 August, 2014 - 2:47 am
The seal which is filled in wetleg of DPT, is carried away with pipe fluid.
New Replies:
Thanks for the reply. The reason we are using buffer solution is because we are measuring flow of...
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