# Flow Measurement **URL:** https://forumautomation.com/c/field-instrumentation/flow-measurement/39.md?page=2 [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) **Page:** 3 --- ## [Selection criteria for flow instrument](https://forumautomation.com/t/selection-criteria-for-flow-instrument/4101)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [July 14, 2018, 5:29pm UTC](https://forumautomation.com/t/selection-criteria-for-flow-instrument/4101 "2018-07-14T17:29:06Z")
Low-Pressure Drop: A device that has a low-pressure drop presents less restriction to flow and also has less friction. Friction generates heat, which is to be avoided. Erosion (due to cavitation and flashing) is more lik… --- ## [Operating principle of a turbine meter](https://forumautomation.com/t/operating-principle-of-a-turbine-meter/79)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\ **Replies:** 0\ **Last updated:** [October 2, 2014, 6:14pm UTC](https://forumautomation.com/t/operating-principle-of-a-turbine-meter/79 "2014-10-02T18:14:28Z")
A magnetic pickup installed above a turbine meter measures the number of magnetic flux cut by the turbine meter blades and produces pulses proportional to the volume of liquid flow through the meter The output of the tu… --- ## [What are the advantages and disadvantage of turbine flow meter?](https://forumautomation.com/t/what-are-the-advantages-and-disadvantage-of-turbine-flow-meter/11546)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [October 18, 2023, 2:06pm UTC](https://forumautomation.com/t/what-are-the-advantages-and-disadvantage-of-turbine-flow-meter/11546 "2023-10-18T14:06:13Z")
Turbine flow meters are widely employed in a variety of industrial applications, including fuel gas distribution. When used in this environment, these devices have numerous advantages and drawbacks. Advantages: High… --- ## [Do Coriolis flow meters need to be calibrated?](https://forumautomation.com/t/do-coriolis-flow-meters-need-to-be-calibrated/12925)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [January 2, 2025, 10:53am UTC](https://forumautomation.com/t/do-coriolis-flow-meters-need-to-be-calibrated/12925 "2025-01-02T10:53:16Z")
Do Coriolis flow meters need to be calibrated? --- ## [What are the limitations of ultrasonic flow meter?](https://forumautomation.com/t/what-are-the-limitations-of-ultrasonic-flow-meter/13812)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 2\ **Last updated:** [January 6, 2026, 10:20am UTC](https://forumautomation.com/t/what-are-the-limitations-of-ultrasonic-flow-meter/13812 "2026-01-06T10:20:48Z")
What are the limitations of ultrasonic flow meter? --- ## [Electromagnetic Flow Meters: Functionality, Advantages, and Applications](https://forumautomation.com/t/electromagnetic-flow-meters-functionality-advantages-and-applications/11853)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [March 8, 2024, 9:51am UTC](https://forumautomation.com/t/electromagnetic-flow-meters-functionality-advantages-and-applications/11853 "2024-03-08T09:51:10Z")
Electromagnetic flowmeters are perfect for measuring the flow rate of any conductive liquid. These meters are extremely accurate and provide reliable flow measurements. Working Principle of Electromagnetic Flow Meter … --- ## [What is the difference between orifice plate and RO?](https://forumautomation.com/t/what-is-the-difference-between-orifice-plate-and-ro/13178)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [June 1, 2025, 11:47am UTC](https://forumautomation.com/t/what-is-the-difference-between-orifice-plate-and-ro/13178 "2025-06-01T11:47:57Z")
What is the difference between orifice plate and RO? --- ## [Mag Flowmeter Showing Zero Flow – What Do You Check First?](https://forumautomation.com/t/mag-flowmeter-showing-zero-flow-what-do-you-check-first/13813)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 2\ **Last updated:** [January 6, 2026, 10:39am UTC](https://forumautomation.com/t/mag-flowmeter-showing-zero-flow-what-do-you-check-first/13813 "2026-01-06T10:39:43Z")
Mag Flowmeter Showing Zero Flow – What Do You Check First? An electromagnetic flowmeter on a cooling water pipeline suddenly indicates zero flow, even though the pump is running and the process is clearly flowing. Power… --- ## [Types of Flow Meters: A Comprehensive Guide](https://forumautomation.com/t/types-of-flow-meters-a-comprehensive-guide/11310)
**Author:** [@Phoebe](https://forumautomation.com/u/Phoebe)\ **Replies:** 0\ **Last updated:** [July 13, 2023, 8:42pm UTC](https://forumautomation.com/t/types-of-flow-meters-a-comprehensive-guide/11310 "2023-07-13T20:42:32Z")
Types of Flow Meters When it comes to measuring the flow of liquids or gases, flow meters play a crucial role in various industries. These devices are designed to provide accurate measurements of flow rates, helping busi… --- ## [Can you explain the difference between positive displacement (PD) and differential pressure (DP) mass-flow measurement using Coriolis, thermal, or ultrasonic technology?](https://forumautomation.com/t/can-you-explain-the-difference-between-positive-displacement-pd-and-differential-pressure-dp-mass-flow-measurement-using-coriolis-thermal-or-ultrasonic-technology/12459)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 28, 2024, 12:47pm UTC](https://forumautomation.com/t/can-you-explain-the-difference-between-positive-displacement-pd-and-differential-pressure-dp-mass-flow-measurement-using-coriolis-thermal-or-ultrasonic-technology/12459 "2024-08-28T12:47:34Z")
Can you explain the difference between positive displacement (PD) and differential pressure (DP) mass-flow measurement using Coriolis, thermal, or ultrasonic technology? --- ## [Orifice Plate installation - Key points to consider](https://forumautomation.com/t/orifice-plate-installation-key-points-to-consider/10821)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [January 1, 2023, 11:42am UTC](https://forumautomation.com/t/orifice-plate-installation-key-points-to-consider/10821 "2023-01-01T11:42:04Z")
Orifice Plate Installation Consideration An orifice plate is a device used to measure the flow rate of a fluid in a pipeline. It is installed in the pipeline and creates a restriction or constriction in the flow of the … --- ## [What is the main difference between SensorPROM and SensorFlash?](https://forumautomation.com/t/what-is-the-main-difference-between-sensorprom-and-sensorflash/12638)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [October 1, 2024, 5:13am UTC](https://forumautomation.com/t/what-is-the-main-difference-between-sensorprom-and-sensorflash/12638 "2024-10-01T05:13:00Z")
What is the main difference between SensorPROM and SensorFlash? --- ## [Can we use an Endress Hauser flowmeter for conductive fluids](https://forumautomation.com/t/can-we-use-an-endress-hauser-flowmeter-for-conductive-fluids/9370)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [May 4, 2021, 7:03am UTC](https://forumautomation.com/t/can-we-use-an-endress-hauser-flowmeter-for-conductive-fluids/9370 "2021-05-04T07:03:15Z")
Is it possible to use the hauser flow meter for conductive fluids --- ## [What is an Integral Orifice?](https://forumautomation.com/t/what-is-an-integral-orifice/11908)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [March 26, 2024, 2:15pm UTC](https://forumautomation.com/t/what-is-an-integral-orifice/11908 "2024-03-26T14:15:08Z")
An integral orifice is a fundamental component of flow measurement systems that regulates and quantifies the flow of fluids, either liquid or gas. Unlike standard orifice plates, which are put separately in pipelines, i… --- ## [Why is a coriolis flow meter used instead of a volumetric flowmeter?](https://forumautomation.com/t/why-is-a-coriolis-flow-meter-used-instead-of-a-volumetric-flowmeter/12279)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [July 17, 2024, 8:39am UTC](https://forumautomation.com/t/why-is-a-coriolis-flow-meter-used-instead-of-a-volumetric-flowmeter/12279 "2024-07-17T08:39:36Z")
Why is a coriolis flow meter used instead of a volumetric flowmeter? --- ## [What is the maintenance of turbine flow meter?](https://forumautomation.com/t/what-is-the-maintenance-of-turbine-flow-meter/12923)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [January 2, 2025, 9:59am UTC](https://forumautomation.com/t/what-is-the-maintenance-of-turbine-flow-meter/12923 "2025-01-02T09:59:54Z")
What is the maintenance of turbine flow meter? --- ## [What is the Reynolds number range for orifice plate?](https://forumautomation.com/t/what-is-the-reynolds-number-range-for-orifice-plate/13179)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [May 10, 2025, 5:28am UTC](https://forumautomation.com/t/what-is-the-reynolds-number-range-for-orifice-plate/13179 "2025-05-10T05:28:02Z")
What is the Reynolds number range for orifice plate? --- ## [What is a thermal mass flow meter](https://forumautomation.com/t/what-is-a-thermal-mass-flow-meter/9366)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [May 1, 2021, 7:09am UTC](https://forumautomation.com/t/what-is-a-thermal-mass-flow-meter/9366 "2021-05-01T07:09:22Z")
What does a thermal mass flow meter do --- ## [HOW DO VALVES SERVE AS MORE THAN AN INSTRUMENT FOR FLUID CONTROL?](https://forumautomation.com/t/how-do-valves-serve-as-more-than-an-instrument-for-fluid-control/10900)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [February 22, 2023, 11:12am UTC](https://forumautomation.com/t/how-do-valves-serve-as-more-than-an-instrument-for-fluid-control/10900 "2023-02-22T11:12:22Z")
As a standard procedure, define Valves as such a fluid control instrument Valves Valves are mechanical devices that can be used to control the flow of liquids, gases, and other fluids within a system. Valves can als… --- ## [What are the different types of electromagnetic flow meters?](https://forumautomation.com/t/what-are-the-different-types-of-electromagnetic-flow-meters/13796)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 2\ **Last updated:** [December 29, 2025, 9:40am UTC](https://forumautomation.com/t/what-are-the-different-types-of-electromagnetic-flow-meters/13796 "2025-12-29T09:40:20Z")
What are the different types of electromagnetic flow meters? --- ## [How accurate is a micro motion flow meter?](https://forumautomation.com/t/how-accurate-is-a-micro-motion-flow-meter/13797)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [December 27, 2025, 7:41am UTC](https://forumautomation.com/t/how-accurate-is-a-micro-motion-flow-meter/13797 "2025-12-27T07:41:03Z")
How accurate is a micro motion flow meter? --- ## [11 things to look while choosing oxygen analyzer for oxygen concentrator -](https://forumautomation.com/t/11-things-to-look-while-choosing-oxygen-analyzer-for-oxygen-concentrator/9450)
**Author:** [@wavevisions98](https://forumautomation.com/u/wavevisions98)\ **Replies:** 0\ **Last updated:** [May 31, 2021, 5:00am UTC](https://forumautomation.com/t/11-things-to-look-while-choosing-oxygen-analyzer-for-oxygen-concentrator/9450 "2021-05-31T05:00:38Z")
11 Things To Check In Any Oxygen Analyzer For Oxygen Concentrator: Does this oxygen analyzer measure the 4 parameters – Oxygen purity, flow, pressure, & temperature? Does this oxygen analyzer have a long-life sensor so… --- ## [Does anyone have a checklist for commissioning an orifice plate? If so, could you please share it?](https://forumautomation.com/t/does-anyone-have-a-checklist-for-commissioning-an-orifice-plate-if-so-could-you-please-share-it/12531)
**Author:** [@automation\_engineer6](https://forumautomation.com/u/automation_engineer6)\ **Replies:** 1\ **Last updated:** [September 5, 2024, 2:30pm UTC](https://forumautomation.com/t/does-anyone-have-a-checklist-for-commissioning-an-orifice-plate-if-so-could-you-please-share-it/12531 "2024-09-05T14:30:06Z")
Does anyone have a checklist for commissioning an orifice plate? If so, could you please share it? --- ## [How accurate is conditioning orifice plate?](https://forumautomation.com/t/how-accurate-is-conditioning-orifice-plate/13177)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [May 2, 2025, 11:13am UTC](https://forumautomation.com/t/how-accurate-is-conditioning-orifice-plate/13177 "2025-05-02T11:13:01Z")
How accurate is conditioning orifice plate? --- ## [Should a Coriolis mass flow meter be installed at very near to the vessel in the batch process?](https://forumautomation.com/t/should-a-coriolis-mass-flow-meter-be-installed-at-very-near-to-the-vessel-in-the-batch-process/12469)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 27, 2024, 1:44pm UTC](https://forumautomation.com/t/should-a-coriolis-mass-flow-meter-be-installed-at-very-near-to-the-vessel-in-the-batch-process/12469 "2024-08-27T13:44:31Z")
Should a Coriolis mass flow meter be installed at very near to the vessel in the batch process? --- ## [What is DN in a flowmeter?](https://forumautomation.com/t/what-is-dn-in-a-flowmeter/13578)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [September 27, 2025, 9:24am UTC](https://forumautomation.com/t/what-is-dn-in-a-flowmeter/13578 "2025-09-27T09:24:55Z")
What is DN in a flowmeter? --- ## [HOW TO MEASURE COMPRESSED AIR FLOW ACCURATELY & EFFICIENTLY?](https://forumautomation.com/t/how-to-measure-compressed-air-flow-accurately-efficiently/10931)
**Author:** [@LEOMI\_Instruments](https://forumautomation.com/u/LEOMI_Instruments)\ **Replies:** 0\ **Last updated:** [March 3, 2023, 3:39pm UTC](https://forumautomation.com/t/how-to-measure-compressed-air-flow-accurately-efficiently/10931 "2023-03-03T15:39:48Z")
Compressed air is a vital resource in various industrial applications from operating pneumatic tools and machinery for performing required functions either in production or processes. However, managing compressed air us… --- ## [How do you select the appropriate gas flowmeter for a specific application?](https://forumautomation.com/t/how-do-you-select-the-appropriate-gas-flowmeter-for-a-specific-application/12282)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [July 21, 2024, 7:24am UTC](https://forumautomation.com/t/how-do-you-select-the-appropriate-gas-flowmeter-for-a-specific-application/12282 "2024-07-21T07:24:43Z")
How do you select the appropriate gas flowmeter for a specific application? --- ## [How to do the installation of the turbine flow meter](https://forumautomation.com/t/how-to-do-the-installation-of-the-turbine-flow-meter/9754)
**Author:** [@instrumentationtechi](https://forumautomation.com/u/instrumentationtechi)\ **Replies:** 1\ **Last updated:** [August 16, 2021, 1:16pm UTC](https://forumautomation.com/t/how-to-do-the-installation-of-the-turbine-flow-meter/9754 "2021-08-16T13:16:06Z")
What are the installation consideration of a turbine flow meter --- ## [What are common vortex flow meter problems?](https://forumautomation.com/t/what-are-common-vortex-flow-meter-problems/13939)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [March 14, 2026, 4:22am UTC](https://forumautomation.com/t/what-are-common-vortex-flow-meter-problems/13939 "2026-03-14T04:22:22Z")
What are common vortex flow meter problems? --- ## [What is the difference between rangeability and turndown ratio?](https://forumautomation.com/t/what-is-the-difference-between-rangeability-and-turndown-ratio/13882)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [February 13, 2026, 11:39am UTC](https://forumautomation.com/t/what-is-the-difference-between-rangeability-and-turndown-ratio/13882 "2026-02-13T11:39:50Z")
What is the difference between rangeability and turndown ratio? --- ## [Liquid Flow Meter Selection and Application](https://forumautomation.com/t/liquid-flow-meter-selection-and-application/13257)
**Author:** [@ARTang](https://forumautomation.com/u/ARTang)\ **Replies:** 0\ **Last updated:** [May 17, 2025, 1:11pm UTC](https://forumautomation.com/t/liquid-flow-meter-selection-and-application/13257 "2025-05-17T13:11:09Z")
Coriolis mass flow meter Coriolis mass flowmeter in the domestic application started late, but it can directly measure the mass flow of fluids in the pipeline, its main features are as follows. (1)Advantages: high meas… --- ## [How to use Cv to calculate flow?](https://forumautomation.com/t/how-to-use-cv-to-calculate-flow/14054)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [May 9, 2026, 5:56am UTC](https://forumautomation.com/t/how-to-use-cv-to-calculate-flow/14054 "2026-05-09T05:56:39Z")
How to use Cv to calculate flow? --- ## [What is the error in magnetic flow meter?](https://forumautomation.com/t/what-is-the-error-in-magnetic-flow-meter/14057)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [May 9, 2026, 5:54am UTC](https://forumautomation.com/t/what-is-the-error-in-magnetic-flow-meter/14057 "2026-05-09T05:54:10Z")
What is the error in magnetic flow meter? --- ## [What are the limitations of electromagnetic flow meter?](https://forumautomation.com/t/what-are-the-limitations-of-electromagnetic-flow-meter/14058)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [May 2, 2026, 7:57am UTC](https://forumautomation.com/t/what-are-the-limitations-of-electromagnetic-flow-meter/14058 "2026-05-02T07:57:38Z")
What are the limitations of electromagnetic flow meter? --- ## [What should I do if a vortex flowmeter malfunctions?](https://forumautomation.com/t/what-should-i-do-if-a-vortex-flowmeter-malfunctions/13664)
**Author:** [@ARTang](https://forumautomation.com/u/ARTang)\ **Replies:** 0\ **Last updated:** [October 31, 2025, 5:42am UTC](https://forumautomation.com/t/what-should-i-do-if-a-vortex-flowmeter-malfunctions/13664 "2025-10-31T05:42:24Z")
A vortex flowmeter is a common industrial flow measurement instrument that uses the principle of turbine rotation to measure the flow rate of a medium. When a fluid passes through the vortex flowmeter’s flow channel, the… --- ## [Electromagnetic Flowmeter vs. Coriolis Mass Flowmeter](https://forumautomation.com/t/electromagnetic-flowmeter-vs-coriolis-mass-flowmeter/13665)
**Author:** [@ARTang](https://forumautomation.com/u/ARTang)\ **Replies:** 0\ **Last updated:** [October 31, 2025, 5:43am UTC](https://forumautomation.com/t/electromagnetic-flowmeter-vs-coriolis-mass-flowmeter/13665 "2025-10-31T05:43:36Z")
Electromagnetic flowmeters and Coriolis mass flowmeters are two of the most widely used types of flowmeters in modern applications. Each has its own advantages and limitations, so choosing the appropriate flowmeter depen… --- ## [Coriolis Flow transiter ](https://forumautomation.com/t/coriolis-flow-transiter/14181)
**Author:** [@Yova](https://forumautomation.com/u/Yova)\ **Replies:** 1\ **Last updated:** [June 15, 2026, 5:10am UTC](https://forumautomation.com/t/coriolis-flow-transiter/14181 "2026-06-15T05:10:08Z")
Helle every one I’m looking for guidance on selecting an appropriate Coriolis flow transmitter for my process application. My operating parameters are: nominal flow rate of 60 ml/min, maximum flow rate of 100 ml/min, 1… [Previous page](https://forumautomation.com/c/field-instrumentation/flow-measurement/39.md?page=1&per_page=50)