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...
Thermowells are downstream of the orifice beyond the meter run length. Before multivariables...
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...
No one here can see your installation. We only know what you tell us, which thus far, is...
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...
The inlet air is has a mechanical pressure regulator somewhere upstream. The changes in pressure...
from the Forum department...What kind of Modbus map lacks 4xxxxx registers
ASCII, RTU, TCP, now ABB?
from the INSTRUMENTATION department...Differential Pressure Transmitter Calibration
Changing the range of Differential Pressure Transmitter Calibration.
Tables A-1 and A-2 on pages 118-119 of the 3051 manual shows the LRL and URL range 'limits' (not...
from the modbus rtu department...rs 485 deep sea 7320
modbus rtu slave rs485
whoops, it's late. Correction to my previous post: 0406h is 1030 decimal. The one offset...
The DSE-7300 operator manual shows setting the Modbus slave address and the baud rate on page 70...
from the Forum department...Instrument Tech Training Topics
My boss has asked me to create a training program from the instrument techs that is one 3 hour course a month for 2 years.
Providing a list of suggested topics to your intended audience is a great technique to spur a...
from the Forum department...EDDL files stored in/on device?
Why haven't manufacturers figured out a way to store EDDL files in on-board memory of devices?
Isn't the EDDL the 1-2Mb file, a DTM or DD file, that defines the objects in a specific model that...
from the Forum department...Foundation Fieldbus - Linearization Type
Foundation Fieldbus Linearization Type
No, when the transducer's direct range (-1 to 2 bar) differs from the reported range (-1 to 1 bar),...
Borrowed from Anderson Instrument's FF transmitter manual (my comments in parentheses) Direct:...
from the Forum department...Vortex Flow Meter
Troubleshooting Vortex Flow Transmitter
Inlet pressure to the valve changes. With the controller in manual mode holding the valve at a...
from the Forum department...pulse scale factor
pulse scale factor
It appears that the repeatability of a given coriolis flow meter increased from 0.05140% to...
from the Automation List department...Electromagnetic flow meter problems
Totalizer reading on electromagnetic flow meter of chemtrols errors.
Most, if not all, flow meters have a setting called something like "Low flow cutoff". ...
from the Forum department...Measuring Flow with Annubar
Should pipeline be full of water for measuring flow with annubar?
To get a flow reading that is meaningful, the pipe needs to be full of liquid. The requirement...
from the AKH department...4-20 ma HART Transmitter
HART transmitter showing only 4 ma or 3.9 ma but it should show 12 ma as per process variable indicated in HART communicator.
Without knowing what the function of terminals 1, 2, 3 and 4 are, it's not possible to determine...
from the Thermocouple department...Thermocouple extension wire resistance
Thermocouple extension wire resistance
Not surprising, different alloys have different resistances. There are tables with resistance...
from the Forum department...Multiple Controllers on one RTD
How can I use the same RTD for more than one controller?
See the blog on this topic at the link below: http://tinyurl.com/mtaqm6f > Can I connect a...
from the Forum department...Modbus mapping registor reading at register plus 1
why the modbus mapping register is visible at register address +/- 1 address.
Guys who live in cubes write the code. Hence, it depends on whether the guy who wrote the code...
from the Real puzzler department...Thermocouple readings problem
Took temperature readings with J thermometer but only had K type wire!
Another control.com thread http://control.com/thread/1336501913 involved back calculating when...
from the Instrumentation department...Calculating LRV/ URV of a Bubbler Level System
How do you calculate the LRV and URV of a Bubbler type Level Transmitter?
Your bubbler can not 'see' any head pressure lower than its elevation, so you can not measure any...
from the Forum department...Modbus via microcontroller
Communicating with device via Modbus RTU through a microcontroller.
If it were me, I'd connect a PC with a serial port running a generic Windows Modbus 'test' master,...
from the instrumentation department...I/P positioner and I/p transducer Control valve
Difference between I/P positioner and I/p transducer
Look at the principle of operation and internal diagrams of a Bellofram Type 1000 I/P. It does not...
from the Instrumentation and Control department...Communication between Speedac NXT weighing Controller and Honeywell Scada
Speedac NXT controller is not communicating with Honeywell Server via RS 485 serial communication.
Was the former device communicating properly right up until it was replaced or is the replacement...
from the Automation and EMS department...Modbus Data transmission time
How to calculate time to receive data from slave to master in daisy chain connection of slaves, if my slaves are 20 and single master.
Mr. Linse, What's a rule-of-thumb value for RTU-TCP latency in a Digi Modbus bridge product? ...
from the Forum department...Actuator indication and control
How to obtain indication and control from a Rotork actuator
Other types of actuators use two drive signals: - one signal drives the actuator 'open' - the...
The light at the end of the tunnel is the headlight of an approaching