from the Help ! department...Convert RMS voltage to Analog signal + Per Unit
Convert RMS voltage to Analog signal + Per Unit
You need a signal conditioner module to produce a useable signal for PLC (4-20mA) and to isolate...
from the Flow department...Experiences Using Flow Meters From Flow Technology
Looking for feedback on flow meters and flow computers from Flow Technology Inc
If it operates as just a flow meter and totalizer, presumably it operates unattended. Someone just...
from the How far can I stretch the standard department...How Strictly Should the MODBUS Addressing and Data Models Be Followed?
How flexible can the Addressing and Data Models be with regard to the width and alignment of objects accessed through read/write register functions?
> Would a Modbus server with register greater than 16 bits be useable? No, It would be a...
from the Instrumentation department...Reinstallation of an Orifice Plate in a Pipeline.
How to reinstall an orifice plate in a pipeline after the information regarding the HP and LP side is lost?
> LP is no angle, HP is angled. just remember where the medium is coming from. its the HP. I...
from the Automation List department...Connecting an Analog I/O Module to a Delta PLC
Having problems connecting an analog I/O module to my Delta PLC
The asterisk *2 on the DVP06XA-S wiring diagram means 'note 2', which says,"If input signal is...
The SMC ITV 2050-043BL4 is an I/P transducer. The digit '4' in the part number is for the...
from the Forum department...Power Meter Destroys Modbus RTU Bus Communication?
Problem with SCADA system that supervises electrical power flow for a residential building. Connected with Modbus RTU over RS485 daisy-chained 2-wire. The communication on the bus seems to be destroyed with Schneider PM750 connected.
Thank you for posting your solution. It really helps who find this thread to see what the solution...
from the Forum department...Measuring Principle of Field Instruments
Regarding the selection of Instruments and its measuring principle
Tony Kuphaldt's massive tome on instrumentation, "Lessons In Industrial Instrumentation,...
from the Instrumentation department...Load cell output mV linearity
Whether load cell output in mV will linearly increment according to weight added to it?
Ideally, yes, but . . . . A load cell is ratiometric, that is, its output is proportional to the...
from the Engineering design department...RS485 Connnection to DV-6 VE4006P2
Connecting DCS to VFDs on 485 Modbus RTU
Modbus is not plug-and-play even if Emerson's laughable marketing spiel, "Plug your Serial...
from the Instrumentation department...Thermocouple Temperature Drops Suddenly
Unexplained temperature drop while process is running
If you get a high mV reading across the thermocouple wires, then - moving the wires to make the...
A drop to 100 is indicative of a short creating a false junction. A drop to zero is indicative...
Somewhere between the hot junction and the analog input there's a short circuit in the extension...
from the Forum department...DCS analog input problem
DCS Analog input signals didn't work with ADAM card
Mr. Fawzy, That's a very interesting observation. A common for all channels is what allows...
Given the nature of what you've reported thus far, I can't predict what will happen if you connect...
The symptoms you're seeing are a classic example of exceeding the common mode limitation of the...
Classic ground loop symptoms When you connect a battery powered simulator, it's floating with...
from the Forum department...Yokogawa DCS Analog Module AAI143
Difference between analog mA value and their correspondent raw value.
Recently there was an unresolved thread involving the same model Yokogawa AI, here ...
from the Calibration department...Rosemount 3051 Calibration
Rosemount 3051 Calibration
from the Instrumentation department...ABB Flowmeter -Flow Data Is Less
flow meter data is less compared to other flowmeters
> "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...
from the instrument department...Level Transmitter on Condensate Drum
Erratic reading for level transmitter on condensate drum
There's nothing wrong with the transmitter, it's accurately reporting exactly what's happening -...
from the Instrumentation and Control department...Temperature Transmitter
How can we test a Temperature Transmitter Accuracy?
I presume the first simulation is Prova 123 K T/C output to temp transmitter. It isn't clear...
from the Instrumentation Design department...Using a Standpipe with DP Level Transmitter
Can we use a standpipe with a DP type level transmitter?
Stilling wells are inside the tank or vessel, so getting an impulse line to connect at the bottom...
from the Instrumentation and Control department...Level Transmitter for Submersible Pump
Which level transmitter will be the best choice for measuring the level of a well of 400 m depth?
Any one that goes deep enough. The question is, how deep? GE Druck's PTX 1730 says it does up...
from the Forum department...TCP/IP over Ethernet
Is TCP/IP on ethernet better?
> What does Ethernet port with web server mean? It means that the Ethernet port supports HTML...
from the High School department...High School Math - How is this used in the real world?
My high school students ask when/how/if abstract topics like polynomials, factoring, rational functions are ever actually used in the Real World. I don't know..maybe you do?
shortened URLs for the thermocouple polynomials above Thermocouple polynomials ...
from the Instrumentation and Control department...Calculating Pressure Transmitter Range
How can we test Rangeability of Pressure Transmitter?
The word 'Turndown' is used in two ways. One use of the word turndown is to define how far a...
The term in "FSO" in your spec means (percent) of full scale uncertainty. My selection...
A colleague informed me that an NaK transmitter is a pressure transmitter with a local fill fluid...
The definition you found is a correct definition of rangeability. I have no idea what a NaK...
from the Forum department...MODBUS to Lan Convertor
Looking for a MODBUS to Lan convertor.
It might work. I didn't see any software for configuring it. That type of serial server is...
from the Forum department...Control Valve Position Command Signal
Looking for a device that generate control valve position signal for open loop control
I think Roy got it - manual station. I thought almost any PID controller had an auto/manual or...
from the Forum department...Equation for Flow conversion in DCS
Need help calculating the DP flow in m3/hr. Have most of the equation.
When you say that 0-500 mbar = 0-20,000 Kg/hr, was that calculation done using the same medium...
from the instrumentations department...HC900 C50 Controller version 1.0x firmware upgrade to higher version.
Is there a way of upgrading our HC900 C50 Version 1.0x to a higher version to take advantage of its features w/o changing the cpu?
1) HCD (Hybrid Control Designer) software is backwards compatible to V1.0 controller firmware, with...
from the Voltage drop department...Honeywell XNX voltage drop
Honeywell XNX shows voltage drop after connecting the TX
Your power supply and wiring are not providing the minimum voltage to the XNX (a gas detector). ...
from the Engineering department...Looking for mA to Ohm Converter
Looking for a device that can convert 4-20 mADC or 0-10 VDC to 1~5 KOhms.
I know of no commercial device that does what you describe. Beamex manufactures process...
from the The Banging Head Against Wall Department department...RS485 Issues - Modbus Temperature Controller to Ethernet
I am currently have a bit of an issue connecting to a Love 2600 temperature controller via RS485 full duplex with a Grid Connect NET485 Modbus RTU to TCP ethernet bridge.
Are both Love and the RTU side of the bridge 4 wire, full duplex? If one side is 2 wire half duplex...
from the Forum department...Field-bus Actuator Recommendation
Looking for recommendations for a Field-bus Actuator
You need a positioner with Fieldbus communications, not an actuator. The actuator does the...
from the Electrical & Instrumentation department...Unable to load DTM of HART Field Transmitter
The Preventive Maintenance Server can not access Rosemount HART protocol transmitters
Rosemount download site for DTMs for Rosemount instruments. http://tinyurl.com/qe6cfy8...
from the Instrumentation department...DP to Flow conversion
can we directly configure square rooted DP (4 - 20mA) from DP transmitter to flow
> And the max range of orifice is 120 m3/hr if my DP is 20mA then is my flow equals to...
Every 3051 has a parameter to convert the output of configured DP range from a linear DP output to...
from the Forum department...How to measure tank level through differential pressure
Differential pressure as tank level incorrect reading
I haven't a clue what your supplier actually provided. You need to ask them to be very specific...
Presumably this is liquid CO2 in a pressurized vessel? You probably have the wrong DP pressure...
from the Forum department...RS-485 Communications
RS-485 Communications with Standing Waves
Agreed, Curt does give great explanations. Oscilloscope for RS-485 differential signals - need...
In a word, yes. For a graphic illustration of such, look here: http://tinyurl.com/o6mbtwm ...
from the Forum department...EGD Protocol?
Looking for EGD protocol spec
90 page note on EGD protocol: http://tinyurl.com/ouhg4rs...
from the Engineer department...Installation of Pressure and Temperature Sensor for Orifice Flow Meter
Standard installation for Gas Flow Measuring with Pressure and Temperature compensation.
I just thought locating the PT static pressure tap at the high side DP tap and keeping a thermowell...
from the Maintenance department...Endress+Hauser Level Transmitter Hunting
What is the possible cause for Level transmitter hunting?
Most all modern level instruments can be configured to indicate a high or a low level (or sometimes...
from the Forum department...Control Valve Positioner
Inlet air pressure of smart positioner is varying
The Azbil SVP3000 'smart' positioner is a HART 4-20mA current pneumatic valve positioner. The...
"This process can check if this value is zero, and if it is, it does
-- Forbes Burkowski, Computer Science 454