# \#calibration **URL:** https://forumautomation.com/tag/calibration/4.md [Latest](https://forumautomation.com/latest.md) · [Categories](https://forumautomation.com/categories.md) · [Tags](https://forumautomation.com/tags.md) --- ## [Sheath Voltage Calculation](https://forumautomation.com/t/sheath-voltage-calculation/12815)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [November 13, 2024, 11:28am UTC](https://forumautomation.com/t/sheath-voltage-calculation/12815 "2024-11-13T11:28:40Z")
The voltage that will show up along a 1 kilometer (1 KM) sheath with 1000 amps (1000 A) running continuously is known as the steady state voltage gradient, and it depends on the dimensions and configuration of the cable … --- ## [Electrical Equipment Size Calculation](https://forumautomation.com/t/electrical-equipment-size-calculation/12827)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [November 14, 2024, 1:49pm UTC](https://forumautomation.com/t/electrical-equipment-size-calculation/12827 "2024-11-14T13:49:21Z")
Thumb rules with Size Calculations for Electrical Equipment Power Cable Selection Cable size (m \* m ^ 2) = (Load current x Distance) / (Voltage drop x 1000) Example: 3-phase, 400V, 100A, 50m cable length Cable s… --- ## [Basic Electrical Formulas](https://forumautomation.com/t/basic-electrical-formulas/12517)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [September 2, 2024, 1:41pm UTC](https://forumautomation.com/t/basic-electrical-formulas/12517 "2024-09-02T13:41:48Z")
Basic Electrical Formulas --- ## [What are the advantages of using a Torque tester in quality control?](https://forumautomation.com/t/what-are-the-advantages-of-using-a-torque-tester-in-quality-control/12492)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 29, 2024, 2:20pm UTC](https://forumautomation.com/t/what-are-the-advantages-of-using-a-torque-tester-in-quality-control/12492 "2024-08-29T14:20:21Z")
What are the advantages of using a Torque tester in quality control? --- ## [Why are valves (vacuum tubes) no longer used, even though they have better sound quality than semiconductors](https://forumautomation.com/t/why-are-valves-vacuum-tubes-no-longer-used-even-though-they-have-better-sound-quality-than-semiconductors/12435)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 1\ **Last updated:** [August 20, 2024, 2:35pm UTC](https://forumautomation.com/t/why-are-valves-vacuum-tubes-no-longer-used-even-though-they-have-better-sound-quality-than-semiconductors/12435 "2024-08-20T14:35:29Z")
Why are valves (vacuum tubes) no longer used, even though they have better sound quality than semiconductors --- ## [What is Loop checking? importance of Loop checking](https://forumautomation.com/t/what-is-loop-checking-importance-of-loop-checking/2346)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [September 26, 2017, 7:33am UTC](https://forumautomation.com/t/what-is-loop-checking-importance-of-loop-checking/2346 "2017-09-26T07:33:17Z")
What is a Loop check? Loop check is an operational check of a control loop. Intended to find out the deficiencies in control loop/ field interface/ HMI Loop checking is the is final stage of a project commissioning. We … --- ## [What is NABL calibration?](https://forumautomation.com/t/what-is-nabl-calibration/12180)
**Author:** [@Sundar\_Iyalunaidu](https://forumautomation.com/u/Sundar_Iyalunaidu)\ **Replies:** 1\ **Last updated:** [June 24, 2024, 1:40pm UTC](https://forumautomation.com/t/what-is-nabl-calibration/12180 "2024-06-24T13:40:16Z")
What is NABL calibration? --- ## [How do you derive the class D Power Amplifiers Efficiency?](https://forumautomation.com/t/how-do-you-derive-the-class-d-power-amplifiers-efficiency/12025)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [May 1, 2024, 5:48am UTC](https://forumautomation.com/t/how-do-you-derive-the-class-d-power-amplifiers-efficiency/12025 "2024-05-01T05:48:35Z")
Efficiency of a Class D Power Amplifier The efficiency of a Class D power amplifier can be calculated by looking at its working principle & the probable waveforms involved. Class D amplifiers function as switching amplif… --- ## [How to Calculate Thermal Overload Relay Setting for a Distribution Transformer?](https://forumautomation.com/t/how-to-calculate-thermal-overload-relay-setting-for-a-distribution-transformer/12006)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [April 25, 2024, 2:18pm UTC](https://forumautomation.com/t/how-to-calculate-thermal-overload-relay-setting-for-a-distribution-transformer/12006 "2024-04-25T14:18:07Z")
Calculating the thermal overload relay setting for a distribution transformer involves evaluating numerous elements, including the transformer rating, load current, and ambient temperature. Here’s a simple calculatio… --- ## [PFD Calculation](https://forumautomation.com/t/pfd-calculation/11872)
**Author:** [@Rabert](https://forumautomation.com/u/Rabert)\ **Replies:** 0\ **Last updated:** [March 15, 2024, 11:28am UTC](https://forumautomation.com/t/pfd-calculation/11872 "2024-03-15T11:28:00Z")
There are a few simple formulas that can be utilized to calculate PFD. The proof test coverage is not taken into consideration. It is considered that the procedure used for the test is in every way accurate. In the m… --- ## [What is the purpose of a calibration curve, and how is it constructed?](https://forumautomation.com/t/what-is-the-purpose-of-a-calibration-curve-and-how-is-it-constructed/10885)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\ **Replies:** 0\ **Last updated:** [February 17, 2023, 2:11am UTC](https://forumautomation.com/t/what-is-the-purpose-of-a-calibration-curve-and-how-is-it-constructed/10885 "2023-02-17T02:11:25Z")
What is the purpose of a calibration curve, and how is it constructed? The following stages are commonly included in the production of a calibration curve: The process of creating standard solutions involves creating… --- ## [Calibration software and its comparison](https://forumautomation.com/t/calibration-software-and-its-comparison/5578)
**Author:** [@divyasree](https://forumautomation.com/u/divyasree)\ **Replies:** 1\ **Last updated:** [October 2, 2021, 5:19pm UTC](https://forumautomation.com/t/calibration-software-and-its-comparison/5578 "2021-10-02T17:19:30Z")
Calibration software calibration software is an applications that automate all or part of a calibration process via computer control. Calibration software also allows the user to manage their calibration and asset data. C… --- ## [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… --- ## [Calibration of instruments](https://forumautomation.com/t/calibration-of-instruments/5574)
**Author:** [@divyasree](https://forumautomation.com/u/divyasree)\ **Replies:** 0\ **Last updated:** [December 26, 2018, 2:29am UTC](https://forumautomation.com/t/calibration-of-instruments/5574 "2018-12-26T02:29:48Z")
Calibration of the Instruments Calibration of the measuring instrument is the process in which the readings obtained from the instrument are compared with the sub-standards in the laboratory at several points along th… --- ## [Instrumentation Forms](https://forumautomation.com/t/instrumentation-forms/5061)
**Author:** [@Ziggy](https://forumautomation.com/u/Ziggy)\ **Replies:** 0\ **Last updated:** [October 30, 2018, 3:09pm UTC](https://forumautomation.com/t/instrumentation-forms/5061 "2018-10-30T15:09:08Z")
Does anyone have a complete forms index I could have? i.e. PT, PS, TT, automated valve, loop, commissioning… --- ## [Working & Automated calibration of Gas analyzer](https://forumautomation.com/t/working-automated-calibration-of-gas-analyzer/2946)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [January 10, 2018, 6:13pm UTC](https://forumautomation.com/t/working-automated-calibration-of-gas-analyzer/2946 "2018-01-10T18:13:25Z")
What is automated calibration? and Why is it needed? Automated calibration is what the calibration is done automatically in an industry without the assistance of a human. It is a difficult task to calibrate an instrume… --- ## [What are the types of Linear displacement transducers?](https://forumautomation.com/t/what-are-the-types-of-linear-displacement-transducers/2351)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [September 27, 2017, 11:44am UTC](https://forumautomation.com/t/what-are-the-types-of-linear-displacement-transducers/2351 "2017-09-27T11:44:05Z")
Resistive potentiometer LVDT Strain gauge Capacitive transducer Variable inductance transducer Piezoelectric transducer Photo electric transducer Hall effect transducer Digital transducer --- ## [What is Zero Suppression and Zero Elevation?](https://forumautomation.com/t/what-is-zero-suppression-and-zero-elevation/2631)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [November 12, 2017, 12:48am UTC](https://forumautomation.com/t/what-is-zero-suppression-and-zero-elevation/2631 "2017-11-12T00:48:10Z")
Basics of Zero Suppression and Zero Elevation (Range Suppression and Range Elevation) Head Pressure = (Density of Liquid) \* Acceleration Gravity \* Height H1 = Distance from transmitter to upper tap H2 = Distance fro… --- ## [How to calibrate displacer level transmitter?](https://forumautomation.com/t/how-to-calibrate-displacer-level-transmitter/2744)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [November 29, 2017, 3:52pm UTC](https://forumautomation.com/t/how-to-calibrate-displacer-level-transmitter/2744 "2017-11-29T15:52:25Z")
Displacer level transducers are used to measure the level of a tank at an isolated location to where extending wirelines are expensive. Here we are looking into the calibration of displacer level transmitter. Calibration … --- ## [What are the important symbols used in P&ID diagram](https://forumautomation.com/t/what-are-the-important-symbols-used-in-p-id-diagram/2479)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 19, 2017, 9:45pm UTC](https://forumautomation.com/t/what-are-the-important-symbols-used-in-p-id-diagram/2479 "2017-10-19T21:45:36Z")
All the devices like transmitters, gauges, and other equipment etc., in a control loop, cannot be picturised to understand the logic. So in a P& id diagram, all the devices are symbolised. Letters and numbers are writt… --- ## [What is LRV and URV ? How to obtain LRV & URV for Level measurment using Differential pressure transmitter?](https://forumautomation.com/t/what-is-lrv-and-urv-how-to-obtain-lrv-urv-for-level-measurment-using-differential-pressure-transmitter/2396)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 6, 2017, 7:04pm UTC](https://forumautomation.com/t/what-is-lrv-and-urv-how-to-obtain-lrv-urv-for-level-measurment-using-differential-pressure-transmitter/2396 "2017-10-06T19:04:30Z")
LRV or lower range value and URV or upper range value are the two important values we should care, while measuring level using differential pressure transmitter Case 1: Here in the above diagram the differential le… --- ## [What are the types of Instrument Errors and what is Calibration](https://forumautomation.com/t/what-are-the-types-of-instrument-errors-and-what-is-calibration/2394)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 6, 2017, 11:09am UTC](https://forumautomation.com/t/what-are-the-types-of-instrument-errors-and-what-is-calibration/2394 "2017-10-06T11:09:03Z")
Instrument Error: Always the measured value of an instrument cannot be an actual value or true value. If the measured value is very close to the true value, we call it to be a very accurate measuring system. So one must … --- ## [HART communtication | Highway Addressable Remote Transducer](https://forumautomation.com/t/hart-communtication-highway-addressable-remote-transducer/2383)
**Author:** [@sivaranjith](https://forumautomation.com/u/sivaranjith)\ **Replies:** 0\ **Last updated:** [October 4, 2017, 12:28pm UTC](https://forumautomation.com/t/hart-communtication-highway-addressable-remote-transducer/2383 "2017-10-04T12:28:06Z")
HART is an important communications protocols used in plant automation. HART is owned by an independent, non-profit HART communication foundation. So that the technology is widely used across the globe as a standard. HA… --- ## [How to perform Temperature Transmitter Calibration at Site?](https://forumautomation.com/t/how-to-perform-temperature-transmitter-calibration-at-site/1926)
**Author:** [@shah](https://forumautomation.com/u/shah)\ **Replies:** 0\ **Last updated:** [April 19, 2017, 10:08am UTC](https://forumautomation.com/t/how-to-perform-temperature-transmitter-calibration-at-site/1926 "2017-04-19T10:08:56Z")
How to perform Temperature Transmitter and temperature gauge Calibration at Site ? What are the tools required to perform calibration of RTD OR Thermocouple. --- ## [What are the different reference modes in pressure calibration?](https://forumautomation.com/t/what-are-the-different-reference-modes-in-pressure-calibration/1646)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [January 11, 2017, 4:07am UTC](https://forumautomation.com/t/what-are-the-different-reference-modes-in-pressure-calibration/1646 "2017-01-11T04:07:30Z")
The reference modes are Gauge,Absolute and Differential. Gauge Mode Referenced to atmospheric pressure. 0 means your test pressure is the same as atmosphere. Gauge mode is the most common reference mode. Can be both… --- ## [What are the measurement error categories?](https://forumautomation.com/t/what-are-the-measurement-error-categories/1625)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [January 4, 2017, 6:16am UTC](https://forumautomation.com/t/what-are-the-measurement-error-categories/1625 "2017-01-04T06:16:42Z")
Measurement errors can be categorized in to two 1.Systematic Error A difference from the true value that is usually constant or proportional to the true value. How Systematic error can be eliminated? Identify the sou… --- ## [What are the major terminologies related to Instrument calibration?](https://forumautomation.com/t/what-are-the-major-terminologies-related-to-instrument-calibration/1623)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [January 4, 2017, 4:50am UTC](https://forumautomation.com/t/what-are-the-major-terminologies-related-to-instrument-calibration/1623 "2017-01-04T04:50:39Z")
Accuracy - The degree of an indicated value to an accepted standard value or true value. Calibration - correcting or determining the error of an existing scale or of evaluating one quantity in terms of reading from ano… --- ## [What are the equipment required for the maintenance,repair and calibration of pressure instruments?](https://forumautomation.com/t/what-are-the-equipment-required-for-the-maintenance-repair-and-calibration-of-pressure-instruments/1615)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [January 2, 2017, 5:52am UTC](https://forumautomation.com/t/what-are-the-equipment-required-for-the-maintenance-repair-and-calibration-of-pressure-instruments/1615 "2017-01-02T05:52:33Z")
Proper equipment is required for the maintenance,troubleshooting,repair and calibration of pressure instruments. 1.Pressure source - Deadweight tester or a portable regulated air supply. 2.A very accurate pressure gaug… --- ## [What is the difference between calibration range and full scale range?](https://forumautomation.com/t/what-is-the-difference-between-calibration-range-and-full-scale-range/1333)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [September 5, 2016, 4:59pm UTC](https://forumautomation.com/t/what-is-the-difference-between-calibration-range-and-full-scale-range/1333 "2016-09-05T16:59:48Z")
Full scale range determines the lowest and highest value what can be measured - for example if you specify pressure gauge 0 - 100 bar, the full scale range is 100 bar, the lowest pressure which could be measured is 0 bar… --- ## [What is instrument calibration and why instrument calibration is required?](https://forumautomation.com/t/what-is-instrument-calibration-and-why-instrument-calibration-is-required/1300)
**Author:** [@denizen](https://forumautomation.com/u/denizen)\ **Replies:** 0\ **Last updated:** [August 31, 2016, 4:23am UTC](https://forumautomation.com/t/what-is-instrument-calibration-and-why-instrument-calibration-is-required/1300 "2016-08-31T04:23:07Z")
Instrument Calibration Calibration is performed to verify sensor/instrument performance. Calibration is the process used to insure that a sensor/instrument maintains specification over time and changing ambient conditi… [Next page](https://forumautomation.com/tag/calibration/4.md?match_all_tags=true&page=1&tags%5B%5D=calibration)