This document discusses best practices for force measurement and calibration. It addresses common measurement errors that can occur from things like misalignment, improper fixtures, different thread depths, and other factors. Maintaining proper calibration techniques that replicate the end user's application is important to minimize errors. Examples of calibration certificates for different load ranges are provided to illustrate calibration uncertainty challenges. Maintaining good communication with end users is key to addressing calibration issues.
Did you know several major companies fail to follow the guidelines set fourth in ASTM E74? ASTM E74 is the standard for calibration of load cells, proving rings, force sensors and other equipment. This standard pertains to force calibration ASTM E74 calibration and is required for force equipment to calibrate to ASTM E4. This also covers what not to do and this presentation goes into detail on all of the steps needed to perform calibrations in line with ASTM E74.
Force Measurement - Best load cell calibration practices Henry Zumbrun
Common Measurement Errors, and Challenges on CMC uncertainty for Force Measurements This slide show presents some of the most common errors for force calibration. This would include, certificate errors, adapter issues, load cell errors, force sensor alignment issues, Dillon load link errors and more.
Hioki IR4056-20 Digital Insulation Resistance Tester | Continuity Tester
Digital Insulation Resistance Tester
Brand: Hioki
Model: IR4056-20
Made in Japan
Shop Now https://bit.ly/35gh3a8
ROnex International
47/2, Fazli Rabbi Road, Motijheel, Dhaka-1000.
+880-1811-155717, 01612-526665
ronexbd@gmail.com
https://ronexbd.wixsite.com/ronexbd/
Hướng dẫn sử dụng Testo 755-1
https://testostore.vn/san-pham/may-do-dong-dien-testo-755-1/
https://testostore.vn/danh-muc/do-dien/may-kiem-tra-dong-dien-dien-ap/
KEMET Webinar - C4AQ/C4AF power box film capacitorsIvana Ivanovska
Join us on the webinar to learn more about the applications where our C4AQ and C4AF series can be used.
Our engineers will speak about the performances of the series
Did you know several major companies fail to follow the guidelines set fourth in ASTM E74? ASTM E74 is the standard for calibration of load cells, proving rings, force sensors and other equipment. This standard pertains to force calibration ASTM E74 calibration and is required for force equipment to calibrate to ASTM E4. This also covers what not to do and this presentation goes into detail on all of the steps needed to perform calibrations in line with ASTM E74.
Force Measurement - Best load cell calibration practices Henry Zumbrun
Common Measurement Errors, and Challenges on CMC uncertainty for Force Measurements This slide show presents some of the most common errors for force calibration. This would include, certificate errors, adapter issues, load cell errors, force sensor alignment issues, Dillon load link errors and more.
Hioki IR4056-20 Digital Insulation Resistance Tester | Continuity Tester
Digital Insulation Resistance Tester
Brand: Hioki
Model: IR4056-20
Made in Japan
Shop Now https://bit.ly/35gh3a8
ROnex International
47/2, Fazli Rabbi Road, Motijheel, Dhaka-1000.
+880-1811-155717, 01612-526665
ronexbd@gmail.com
https://ronexbd.wixsite.com/ronexbd/
Hướng dẫn sử dụng Testo 755-1
https://testostore.vn/san-pham/may-do-dong-dien-testo-755-1/
https://testostore.vn/danh-muc/do-dien/may-kiem-tra-dong-dien-dien-ap/
KEMET Webinar - C4AQ/C4AF power box film capacitorsIvana Ivanovska
Join us on the webinar to learn more about the applications where our C4AQ and C4AF series can be used.
Our engineers will speak about the performances of the series
Part II also includes admittance and demag testing and uses more advanced equipment to test the meter. See live results from today’s newest test equipment.
This document provides information on low ohm power resistors in the HTE series. It describes the physical and electrical specifications for 13 resistor models in sizes 2512 and 1206, including their power ratings at 100C and 70C, dimensions, resistance values available from 0.3-10 mohm, and typical weight. Application areas include sensors for hybrid power applications, automotive high current uses, and power modules.
ECC EST-300 Series Next-Generation Hipot Tester - High Output Rating As Compa...Aimil Ltd
The EST-300 next-generation Hipot tester combines industry-leading compact size with Unbeatable performance. This new series economically integrates AC, DC withstand, and
Insulation resistance into a single solution. The Hipot tester is highly portable and fits readily in any spatially limited testing environment. The EST-300 series provides a robust set of features. That includes high output rating, ARC detection, ramp-high, charge-low, and fast discharge to enhance overall testing efficiency and safety by preventing the common errors and detecting any dielectric breakdowns during tests on the DUT. This Product Originates from Extech Electronics Co., Taiwan and Aimil Ltd. is their major distributors and suppliers in India.
This document provides information on low ohm power resistors in the HTE series. It describes the physical and electrical specifications of 12 different resistor models varying in size, power rating, resistance value and other parameters. Key features highlighted include suitability for mounting on substrates, high temperature performance, long term stability and recommended packaging, storage and ordering information.
The document describes the ALIAVA Metal Tube Variable Area Flowmeter Model AVF250 series. It provides specifications for the flowmeter such as available sizes from 15mm to 200mm, materials including stainless steel 304 and 316, flow ranges from 1-200000 L/hr for liquids and 0.03-4000 m3/hr for gases, and accuracy of +/-1.6%. It also lists features such as a 4-digit display, totalizer, 4-20mA output, and explosion proof certification. Dimensions and pressure drops for each size are provided in tables.
KEMET Webinar - Extended series for axial electrolytic capacitorsIvana Ivanovska
Learn more about the applications where our combined axial electrolytic capacitors with 80 VDC/high temperature can be used.
Our engineers will speak about the performances of the series
The document provides product information for the Cerabar T PMC131 pressure transmitter, including an overview of its applications in measuring absolute and gauge pressures, its key technical specifications such as an accuracy of less than 0.5%, and price tables listing order numbers and prices for different models and accessories like a display unit. It also includes diagrams of the transmitter dimensions and electrical connections.
This document provides information on the Model 65040W stainless steel, welded seal, double-ended shear beam load cell from Sensortronics. It has a rated capacity of 25,000 to 75,000 lbs and is designed for use in certified truck and rail scales. The load cell has welded stainless steel construction, is rated for hazardous environments, and meets various industry standards and approvals. Dimensions and specifications are provided.
This document provides information on low ohm power resistors from the HTE series. It includes specifications for 13 resistor types with power ratings from 1W to 6W and resistance values from 0.0003 ohms to 0.1 ohms. Dimensions, tolerances, temperature coefficients, and derating curves are provided. The resistors are qualified for use from -65C to 170C and applications include sensors, automotive, and power modules.
Design and development of horizontal tensile testing machine (5kN)Sajeed Mahaboob
In this project, a portable horizontal tensile testing system involving the use of a specially designed tensile specimen is proposed. The system developed was designed to convert the rotation motion of a ball screw into the linear motion of specimen grips that apply a tensile load to the specimen. The frame contains an aligned linear motion guide for the movement of the specimen grips, ensuring the co-linearity of the travel axes. One side of the specimen is connected to a ball-screw block and the other side is connected to a load-cell (which is static) to detect the load magnitude.
The Changes in ISO 6892-1:2016 Metallic Materials Tensile Testing StandardBülent AYDEMİR
Today, as the current standard tensile test for metallic materials ISO 6892-1 standard are used. The English version of the standard in 2009 and the Turkish version in 2011 were published. The English version was renewed in 2016. In this study, we aimed to summarize the major changes made in this standard. In this way, it is aimed to be transmitted detailed and accurate information for related person.
Uniohm resistors datasheet for car -anti-sulfurized thick film chip resistors...Felix Law
This Uniohm resistors datasheet for car 1%-5%, anti-sulfurized thick film chip resistors, ns02~ns12 series. Allchips is the authorized distributor of Uniohm.
UNIOHM recommend the storage condition temperature: 15℃~35℃, humidity :25%~75%.
(Put condition for individual product).
Even under UNIOHM recommended storage condition, solderability of products over 1 year old.
(Put condition for each product) may be degraded.
Store / transport cartons in the correct direction, which is indicated on a carton as a symbol.
Otherwise bent leads may occur due to excessive stress applied when dropping of a carton.
Product performance and soldered connections may deteriorate if the products are stored in the following places:
a. Storage in high Electrostatic.
b. Storage in direct sunshine、rain and snow or condensation.
The document provides information on various aspects of spot welding including:
- Definitions of key terms like spot weld, welding control, and the importance of force between electrodes.
- Explanations of spot welding principles involving resistance heating when current passes through interfaces of stacked metals joined by electrodes applying pressure.
- Advantages of spot welding as the quickest and most economical method for joining metals requiring no filler medium.
- Details on TPM system pillars like autonomous maintenance, planned maintenance, quality maintenance, and focused improvement to maintain production quality and equipment lifespan.
This load cell is designed for high accuracy weighing applications. It has a low profile and is rated up to 20,000 pounds or 10,000 kg. It has high immunity to off-center loads and shock. It is approved to international standards and available with hazardous environment approvals. Key features include sealed protection, various capacity and construction options, and compensation electronics.
Testing/Manufacture/tensile and mini tensile machinefec2020
This document summarizes a tensile testing machine that measures the tensile strength of materials like paper, rubber, and metals. The machine has several key features, including digital display and controls, safety limit switches, automatic tare and peak hold functions, and accuracy within 1%. It is available in various load capacities from 10,000 kg to 10 kg. The document also introduces a compact universal testing machine that can test materials like paper, rubber, and fabrics with a maximum load of 100 kg. Both machines are designed for ease of use and include operating manuals.
Principles and Practices of Traceability and CalibrationJasmin NUHIC
To learn and understand different types of measurements units, measurement constants, calibration and measurement standards as well as principles and practices of treaceability.
The document discusses pharmacopoeial standards and the Indian Pharmacopoeia. It explains that standards are created by a scientific body to provide minimum quality standards for drugs. Standards aim to balance desirable quality with what is achievable for manufacturers. Monographs include identification tests, purity tests, limits for impurities and dosage information. Test methods are clearly described to allow replication in various laboratories. The history and process for developing the Indian Pharmacopoeia are also summarized.
NCQC is sharing information about Instrument Calibration and its requirements in organizations. This ppt presentation helps organization and management trainee to understand purpose, importance and requirements of calibration management system.
This document discusses validation and calibration of HPLC systems. It defines validation as establishing that an analytical procedure meets requirements for its intended use through laboratory studies. A validation protocol outlines how validation will be conducted. Equipment validation demonstrates that equipment is suitable for use and comparable to routine equipment. Calibration involves demonstrating that an instrument produces results within specified limits compared to a reference standard. The document outlines parameters to validate like accuracy, precision, specificity, range, robustness and more. It provides details on testing these parameters and accepting calibration of modules like the pump, injector, detector and column heating.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
Part II also includes admittance and demag testing and uses more advanced equipment to test the meter. See live results from today’s newest test equipment.
This document provides information on low ohm power resistors in the HTE series. It describes the physical and electrical specifications for 13 resistor models in sizes 2512 and 1206, including their power ratings at 100C and 70C, dimensions, resistance values available from 0.3-10 mohm, and typical weight. Application areas include sensors for hybrid power applications, automotive high current uses, and power modules.
ECC EST-300 Series Next-Generation Hipot Tester - High Output Rating As Compa...Aimil Ltd
The EST-300 next-generation Hipot tester combines industry-leading compact size with Unbeatable performance. This new series economically integrates AC, DC withstand, and
Insulation resistance into a single solution. The Hipot tester is highly portable and fits readily in any spatially limited testing environment. The EST-300 series provides a robust set of features. That includes high output rating, ARC detection, ramp-high, charge-low, and fast discharge to enhance overall testing efficiency and safety by preventing the common errors and detecting any dielectric breakdowns during tests on the DUT. This Product Originates from Extech Electronics Co., Taiwan and Aimil Ltd. is their major distributors and suppliers in India.
This document provides information on low ohm power resistors in the HTE series. It describes the physical and electrical specifications of 12 different resistor models varying in size, power rating, resistance value and other parameters. Key features highlighted include suitability for mounting on substrates, high temperature performance, long term stability and recommended packaging, storage and ordering information.
The document describes the ALIAVA Metal Tube Variable Area Flowmeter Model AVF250 series. It provides specifications for the flowmeter such as available sizes from 15mm to 200mm, materials including stainless steel 304 and 316, flow ranges from 1-200000 L/hr for liquids and 0.03-4000 m3/hr for gases, and accuracy of +/-1.6%. It also lists features such as a 4-digit display, totalizer, 4-20mA output, and explosion proof certification. Dimensions and pressure drops for each size are provided in tables.
KEMET Webinar - Extended series for axial electrolytic capacitorsIvana Ivanovska
Learn more about the applications where our combined axial electrolytic capacitors with 80 VDC/high temperature can be used.
Our engineers will speak about the performances of the series
The document provides product information for the Cerabar T PMC131 pressure transmitter, including an overview of its applications in measuring absolute and gauge pressures, its key technical specifications such as an accuracy of less than 0.5%, and price tables listing order numbers and prices for different models and accessories like a display unit. It also includes diagrams of the transmitter dimensions and electrical connections.
This document provides information on the Model 65040W stainless steel, welded seal, double-ended shear beam load cell from Sensortronics. It has a rated capacity of 25,000 to 75,000 lbs and is designed for use in certified truck and rail scales. The load cell has welded stainless steel construction, is rated for hazardous environments, and meets various industry standards and approvals. Dimensions and specifications are provided.
This document provides information on low ohm power resistors from the HTE series. It includes specifications for 13 resistor types with power ratings from 1W to 6W and resistance values from 0.0003 ohms to 0.1 ohms. Dimensions, tolerances, temperature coefficients, and derating curves are provided. The resistors are qualified for use from -65C to 170C and applications include sensors, automotive, and power modules.
Design and development of horizontal tensile testing machine (5kN)Sajeed Mahaboob
In this project, a portable horizontal tensile testing system involving the use of a specially designed tensile specimen is proposed. The system developed was designed to convert the rotation motion of a ball screw into the linear motion of specimen grips that apply a tensile load to the specimen. The frame contains an aligned linear motion guide for the movement of the specimen grips, ensuring the co-linearity of the travel axes. One side of the specimen is connected to a ball-screw block and the other side is connected to a load-cell (which is static) to detect the load magnitude.
The Changes in ISO 6892-1:2016 Metallic Materials Tensile Testing StandardBülent AYDEMİR
Today, as the current standard tensile test for metallic materials ISO 6892-1 standard are used. The English version of the standard in 2009 and the Turkish version in 2011 were published. The English version was renewed in 2016. In this study, we aimed to summarize the major changes made in this standard. In this way, it is aimed to be transmitted detailed and accurate information for related person.
Uniohm resistors datasheet for car -anti-sulfurized thick film chip resistors...Felix Law
This Uniohm resistors datasheet for car 1%-5%, anti-sulfurized thick film chip resistors, ns02~ns12 series. Allchips is the authorized distributor of Uniohm.
UNIOHM recommend the storage condition temperature: 15℃~35℃, humidity :25%~75%.
(Put condition for individual product).
Even under UNIOHM recommended storage condition, solderability of products over 1 year old.
(Put condition for each product) may be degraded.
Store / transport cartons in the correct direction, which is indicated on a carton as a symbol.
Otherwise bent leads may occur due to excessive stress applied when dropping of a carton.
Product performance and soldered connections may deteriorate if the products are stored in the following places:
a. Storage in high Electrostatic.
b. Storage in direct sunshine、rain and snow or condensation.
The document provides information on various aspects of spot welding including:
- Definitions of key terms like spot weld, welding control, and the importance of force between electrodes.
- Explanations of spot welding principles involving resistance heating when current passes through interfaces of stacked metals joined by electrodes applying pressure.
- Advantages of spot welding as the quickest and most economical method for joining metals requiring no filler medium.
- Details on TPM system pillars like autonomous maintenance, planned maintenance, quality maintenance, and focused improvement to maintain production quality and equipment lifespan.
This load cell is designed for high accuracy weighing applications. It has a low profile and is rated up to 20,000 pounds or 10,000 kg. It has high immunity to off-center loads and shock. It is approved to international standards and available with hazardous environment approvals. Key features include sealed protection, various capacity and construction options, and compensation electronics.
Testing/Manufacture/tensile and mini tensile machinefec2020
This document summarizes a tensile testing machine that measures the tensile strength of materials like paper, rubber, and metals. The machine has several key features, including digital display and controls, safety limit switches, automatic tare and peak hold functions, and accuracy within 1%. It is available in various load capacities from 10,000 kg to 10 kg. The document also introduces a compact universal testing machine that can test materials like paper, rubber, and fabrics with a maximum load of 100 kg. Both machines are designed for ease of use and include operating manuals.
Principles and Practices of Traceability and CalibrationJasmin NUHIC
To learn and understand different types of measurements units, measurement constants, calibration and measurement standards as well as principles and practices of treaceability.
The document discusses pharmacopoeial standards and the Indian Pharmacopoeia. It explains that standards are created by a scientific body to provide minimum quality standards for drugs. Standards aim to balance desirable quality with what is achievable for manufacturers. Monographs include identification tests, purity tests, limits for impurities and dosage information. Test methods are clearly described to allow replication in various laboratories. The history and process for developing the Indian Pharmacopoeia are also summarized.
NCQC is sharing information about Instrument Calibration and its requirements in organizations. This ppt presentation helps organization and management trainee to understand purpose, importance and requirements of calibration management system.
This document discusses validation and calibration of HPLC systems. It defines validation as establishing that an analytical procedure meets requirements for its intended use through laboratory studies. A validation protocol outlines how validation will be conducted. Equipment validation demonstrates that equipment is suitable for use and comparable to routine equipment. Calibration involves demonstrating that an instrument produces results within specified limits compared to a reference standard. The document outlines parameters to validate like accuracy, precision, specificity, range, robustness and more. It provides details on testing these parameters and accepting calibration of modules like the pump, injector, detector and column heating.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness, happiness and focus.
This document discusses accelerometers and their types and applications. It describes four main types of accelerometers: mechanical, capacitive, piezoelectric, and micro-chip. It explains that accelerometers measure acceleration forces and the majority are based on piezoelectric crystals. Some applications of accelerometers mentioned include engineering, industry, medical, navigation, and safety features in automobiles like airbags. The document also discusses using accelerometers for vibration monitoring of machines to observe machine health.
This document discusses the requirements and process for laboratory accreditation according to ISO 15189 standards. It explains that accreditation is a formal recognition by an authoritative body that a laboratory is competent to perform specific tasks. The key requirements outlined include developing a quality management system, appointing a quality manager and technical manager, establishing quality indicators for monitoring and continual improvement, comprehensive documentation, and regular audits.
This document discusses vibration measurement and analysis. It describes various types of vibration transducers that convert mechanical vibrations into electrical signals, including variable resistance, piezoelectric, electrodynamic, and LVDT transducers. It also discusses vibration pickups like vibrometers, accelerometers, and exciters. Dynamic testing is used to determine natural frequencies, damping, and mode shapes through modal testing or measure in-service loads through operational testing. The measurement signals are then conditioned and analyzed to study the vibration spectrum of machines and structures.
Measurement of force and torque and pressure standardsMech-4u
Measurement of Force and Torque and pressure Standards,
Measuring Methods,
study of different types of forces and torque Measuring systems.
Description and working Principle of different types of Transducers for Measuring Pressure.
1. The document discusses various methods for measuring linear and angular velocity, including electromagnetic, seismic, and digital transducers as well as using the Doppler effect.
2. Electromagnetic transducers are the most commonly used for linear velocity and work by inducing a voltage in a coil from the motion of a magnet. Moving magnet and moving coil types are described.
3. Angular velocity can be measured with a tachometer, which can be mechanical and count revolutions or electrical and generate a voltage proportional to speed.
Reference standards in Pharmaceutical Industriesbhavanavedantam
This presentation is brief introduction about reference standards that are using in pharmaceutical industries for calibration of different instruments, methods and pharmaceutical chemicals...
1. The document provides a detailed overview of cement chemistry and manufacturing processes. It covers the history of cement and key developments.
2. The main manufacturing processes - wet, dry suspension, and dry preheater processes - are described. The preheater system used to preheat raw materials is explained in detail.
3. The key cement minerals C3S, C2S, C3A, and C4AF are defined in terms of their chemical formulas and roles in cement hydration and strength development. Their properties and crystal structures are also summarized.
The document summarizes various tests conducted on cement, including:
1. Field testing to check for lumps, color, texture and consistency.
2. Standard consistency tests to determine the percentage of water required for a cement paste.
3. Fineness tests using sieving or air permeability methods to check particle size.
4. Soundness tests using a Le Chatelier apparatus to ensure cement does not expand after setting.
5. Strength tests involving casting cement-sand mortar cubes and breaking them to measure compressive strength after curing.
Calibration and validation of analytical instrumentsSolairajan A
This document discusses the calibration and validation of various analytical instruments used in pharmaceutical analysis. It provides details on calibrating UV-Vis spectrophotometers, IR spectrophotometers, spectrofluorimeters, HPLC, and GC. Calibration ensures instrument readings are accurate against standards, while validation confirms the instrument is correctly installed and operating as intended. The document outlines tests and acceptance criteria for evaluating characteristics like wavelength accuracy, resolution, noise, baseline flatness, sensitivity, flow rate, and linearity during calibration and validation of different analytical instruments.
This presentation gives the information about Force, Pressure and Torque measurements of the subject: Mechanical measurement and Metrology (10ME32/42) of VTU Syllabus covering unit-6.
This presentation will cover the basics and differences between self-contained and transformer or instrument rated meter sites. Also discussed are transformer rated meter forms, test switches and CT's, Blondel's Theorem and why this matters to metering, meter accuracy testing in the field, checking the health of your CT's and PT's, and Site Verification (and not just meter testing).
DereMurray - APEC 2014 - Noise Susceptibility of delta-Vbe Temperature SensorsDerek Murray
This document discusses temperature sensing using the ΔVBE method in power converters and the susceptibility of ΔVBE sensors to noise. It presents an error mechanism called "charge-pumping" that can cause temperature measurement errors. The document introduces a SPICE model to simulate the error, shows measurement results validating the model, and concludes with techniques analog designers and application engineers can use to reduce the error, such as choosing transistors and capacitors less susceptible to charge-pumping.
Datasheet Fluke A40B. Hubungi PT. Siwali Swantika 021-45850618PT. Siwali Swantika
Datasheet Fluke Precision Current Shunts.Informasi lebih detail hubungi PT. Siwali Swantika, Jakarta Office : 021-45850618 atau Surabaya Office : 031-8421264
This document discusses power transformer energy performance standards and regulations around the world. It covers background topics, common policy instruments used to promote energy efficiency, reference standards used to measure performance, and categories of energy performance metrics. Key points addressed include definitions of rated power, reference temperatures, frequencies and voltages in standards, as well as common metrics like maximum losses, minimum efficiency, and peak efficiency index.
This presentation discusses the differences between self-contained and transformer or instrument rated meter sites; transformer rated meter forms; test switches and CTs; meter accuracy testing in the field; checking the health of your CTs and PTs; and Site Verification. This presentation was given at the MEUA Meter School. 03/03/20
ISO/IEC 14763-3 edition 2 was published in 2014. This standard supports the implementation and operation of customer premises cabling by specifying systems and methods for inspecting and testing optical fiber cabling. In 2015, a corrigendum was published. Currently, an amendment is under review to make further corrections. Also, a supplement to the amendment was added.
The corrigendum made changes to connecting hardware attenuation values and modified the equations for test limits. The amendment made corrections to end face inspection, test methods, and uncertainty. The supplement to the amendment fixed errors within the uncertainties. Details of the changes are described herein.
This presentation was given with LUCELEC at the CARILEC CEO & Leadership Conference and covers system loss and what to do to reduce it; why transformer rated metering is important; site verification and not just meter testing; and management systems and utilizing AMI data to control and reduce billing errors.
This document discusses best practices for meter and instrument transformer testing in an Advanced Metering Infrastructure (AMI) system. It addresses the need to test meters and transformers for accuracy upon installation, return to service, and periodically while in service. Site verification testing is also recommended to check for wiring errors and ensure meters and transformers are properly sized. The document emphasizes that transformer-rated services, which represent a small portion of customers but a large portion of revenue, should be a priority for meter testing resources given their financial impact. AMI data can help identify transformer-rated services for further evaluation and testing.
This presentation discusses:
- Best practices regarding the need to ensure that all transformers used for metering circuits are properly sized
- The ability to optimize revenue regardless of customer usage over time
- Best practices to ensure that transformers and meters have been installed correctly in the field and continue to perform in the same fashion
- Best practices for certifying the accuracy class of the transformers and how to best set up a shop testing and field testing/verification program.
- What the costs of implementing such a system and what the costs of not implementing such a system can be.
This document provides information on an optocoupler product called the SFH6916. It includes:
- A description of the product as having a GaAs infrared emitter optically coupled to a silicon phototransistor detector in a 16 pin package.
- Features such as high current transfer ratio, isolation voltage, and packaging.
- Electrical characteristics including current ratings, switching times, and current transfer ratio.
- Packaging dimensions and testing requirements.
To subject Electric Meters to non-nominal conditions more similar to what meters would experience in the field as opposed to the nominal operating conditions typically used when testing meter accuracy in a shop environment.
Electronics & Innovation, E&I, is a focused and dynamic company fulfilling the market demand for RF power amplifiers, components and modules. Check out our slideshow which focuses on educating our customers to allow them to select the appropriate solution to provide the most efficient, cost effective results.
katalog agilent-digital-multimeter-L4411 a-system-tridinamika, jual agilent digital multimeter L4411 a system, beli, info, harga, spesifikasi dan review
dapatkan informasi lengkap tentang produk agilent di www.tridinamika.com
untuk informasi dan pemesanan hubungi sales@tridinamika.com
Load Cell Lunch and Learn Presented by InterfaceInterface
This in-depth presentation is a detailed crash course on load cells and force measurement for a wide variety of applications. Learn more about our history, unparalleled track record and our products.
The best way to be sure you are getting the correct revenue from a site is to test the entire site. Learn how to find any diversions, corrosion, broken or frayed wiring as well as all the tests you can perform while at a site.
This document describes an experiment characterizing the non-ideal properties of operational amplifiers using a LM741C op-amp. The experiment involves measuring the op-amp's open loop transfer characteristic to determine gain and offset voltage, nulling the offset voltage, measuring slew rate in unity gain configuration, and determining gain and bandwidth in both unity gain and non-inverting amplifier configurations through simulation and laboratory experiments. The results are to be recorded on a pre-lab and lab worksheet.
The best way to be sure you are getting the correct revenue from a site is to test the entire site. Learn how to find any diversions, corrosion, broken or frayed wiring as well as all the tests you can perform while at a site.
i. There are various designs and construction methods for surge monitors between manufacturers but no standard testing procedures.
ii. Site tests on surge monitors often fail because end users do not understand the different designs and apply improper testing methods like using normal AC voltage instead of impulse currents.
iii. To properly test a surge monitor, the test procedures recommended by the original manufacturer should be followed rather than mixing procedures from different manufacturers.
Fundamentals of Transformer-Rated Field Meter Testing and Site Verification
Presentation on force measurement for accreditation bodies
1. Best Practices For Force
Measurement
Common Measurement Errors, and
Challenges on CMC uncertainty for
Force Measurements
Copyright Morehouse 2016 1
2. Best Practices For Force
Measurement
Best measurement practice is
communication with the end customer to
best replicate with calibration, in your lab,
how the instrument is being used.
Copyright Morehouse 2016 2
3. Best Practices For Force Measurement
Henry Zumbrun II, President Morehouse Instrument
Company
1742 Sixth Ave
York, PA 17403
PH: 717-843-0081
web: www.mhforce.com
info: hzumbrun@mhforce.com
3
The guy talking right now
Copyright Morehouse 2016
4. Abstract
This 1 hour session will cover the
following:
Common force measurement errors
and the importance of calibrating the
instrument in the manner it is being
used
Examples of CMC for Force Scopes
Challenges on CMC uncertainty for
force
4Copyright Morehouse 2016
5. Documentation
→ISO/IEC 17025 , 5.4.1 – The laboratory shall use the appropriate methods
and procedures for all tests and/or calibrations within its scope.
Importance:
• The calibration must be performed using an acceptable and agreed upon
calibration method or procedure (Contract Review). The results must be
provided in a report with necessary information.
What could go wrong?:
• The reference laboratory may only check the calibration procedure and
not mention the adapters used to perform the calibration.
• Even the ASTM E74 standard is an incomplete calibration procedure and
does not address measurement errors associated with the use of different
calibration fixtures. This is significant source of error and variability
between labs that adhere to ASTM E74-13a or other standards
5
Copyright Morehouse 2016
6. ISO 376: 2011
ISO 376 recognizes the importance of adapters in reproducibility conditions of
the measurement. Proper adaptor use in accordance with ISO 376 Annex A,
helps ensure the reliability of reported measurements. Note: Annex A is not a
requirement for labs to adhere to.
A.4 Loading fittings
A.4.1 General
• Loading fittings should be designed in such a way that the line of force application
is not distorted. As a rule, tensile force transducers should be fitted with two ball
nuts, two ball cups and, if necessary, with two intermediate rings, while
compressive force transducers should be fitted with one or two compression pads.
6
Copyright Morehouse 2016
7. • Loaded with the proper Pin Diameter to 50,000 LBF
7
Tension Links Improper Vs Proper
Pin Diameter
8. • Loaded without the proper Pin Diameter to 50,000 LBF
8
Tension Links Improper Vs Proper
Pin Diameter
9. Tension Links Improper Vs Proper
Pin Diameter
Difference of 860 LBF or 1.72 % error at 50,000 LBF from not
using the proper size load pins.
Out of Tolerance Versus In Tolerance
Note: Tension links of this design seem to exhibit similar
problems. If you are unsure, TEST!
9Copyright Morehouse 2016
10. Misalignment Demonstrating 0.752 % error
10
Misalignment on S-beam
Output in mV/V
Aligned in machine
-1.96732 mV/V
Output in mV/V
Slightly misaligned in machine
-1.98211 mV/V
Copyright Morehouse 2016
11. Misalignment Demonstrating 0.752 % Error
11
Misalignment on 10,000 LBF S-beam
Output in mV/V
Aligned in machine
-1.96732 mV/V
Expanded Uncertainty 9.95 LBF
Output in mV/V
Slightly misaligned in machine
-1.98211 mV/V
Expanded Uncertainty 85.0 LBF
Copyright Morehouse 2016
13. Different Hardness of Top Adaptors
Example: A customer brought in a 1,000,000 LBF load cell for calibration.
Morehouse performed a calibration. The output of the load cell was recorded as
1,500 LBF higher than the previous calibration for a force applied 1,000,000 LBF.
Is this a stability issue, or an adaptor issue?
After calling the customer, we were informed a new top loading block was supplied
with this load cell for the current calibration. When we told them what was
happening, they sent the original top loading block. When tested, the original block
resulted in an output of 1,000,180 LBF when loaded to 1,000,000 LBF.
13
When using the new adaptor and figuring
the measurement error between the
different top blocks (adaptors), Expanded
Uncertainty would have increased from
269 LBF with original top adaptor to
1,490 LBF using the newly fabricated
adaptor.
Copyright Morehouse 2016
14. Loading Through Different Thread Depths
14
Below is a test Morehouse did with two different types of adaptors and recorded the
readings with 10,000 LBF applied. Output was 10,001.5 LB with 1.5” of engagement vs
9942.3 LBF with 0.5” engagement. There was a difference of 59.2 LBF on a 10,000 LBF
cell.
Column Type Cell
Model RFG/F226-01
Different Type Adaptors.
1.5” versus 0.5” engagement
The error on this measurement was over 5 % on a device expected to be better
than 0.025%. How are your devices being calibrated?
Copyright Morehouse 2016
15. Different Thread Depths
15
The top light grey line shows the difference in output when
loading a shear web load cell at different thread depths
The darker bottom line shows the difference in output when
loading against the load cell shoulder.
Copyright Morehouse 2016
17. ALUMINUM LOAD CELL OUTPUT USING DIFFERENT
COMPRESSION ADAPTERS LOADED TIGHT AGAINST
THE SHOULDER
Force Applied Adapter 1 Adapter 2 Adapter 3 Max Error Max
Readings Readings Readings Between Adapters % Error
600 595.4 598.8 605.6 10.2 1.70%
1200 1191.2 1196.4 1205.1 13.9 1.16%
1800 1787.4 1793.4 1802.7 15.3 0.85%
2400 2383.2 2390.3 2399.7 16.5 0.69%
3000 2979.4 2987.1 2996.7 17.3 0.58%
Note: This test was done on Aluminum type Shear Web Cell. Steel cells behave much differently. Aluminum cells are usually from 100 LBF - 3,000 LBF
Aluminum Load Cell Top Fixture Test
600 1200 1800 2400 3000
Adapter 1 0.77% 0.74% 0.70% 0.70% 0.69%
Adapter 2 0.20% 0.30% 0.37% 0.41% 0.43%
Adapter 3 0.92% 0.42% 0.15% 0.01% 0.11%
0.00%
0.10%
0.20%
0.30%
0.40%
0.50%
0.60%
0.70%
0.80%
0.90%
1.00%
ErrorPercentagefromnominal
Different Top Adapter Test on a 3K Aluminum Load Cell
17Copyright Morehouse 2016
18. Multi - Column Load Cell
• Error associated with installing a non flat base on a multi-
column cell. This is an actual test result we observed on a
Revere multi-column cell.
18
Non Flat Base Flat Base
Maximum Error Maximum Error
Force Applied In Rotation In Rotation
LBF LBF
30000 12 4
150000 136 24
300000 342 68
% error % error
30000 0.040% 0.013%
150000 0.091% 0.016%
300000 0.114% 0.023%
Copyright Morehouse 2016
19. Loading through the bottom threads in compression
19Copyright Morehouse 2016
20. Loading through the bottom threads in
compression
20Copyright Morehouse 2016
21. Loading through the bottom threads in
compression
21
MOREHOUSE 10000 LBF SERIAL NO EXAMPLE
% Force Applied COMBINED UNCERTAINTY FOR K=2
2.00% 200 0.20834% 0.417 LBF
10.00% 1000 0.04171% 0.417 LBF
20.00% 2000 0.02093% 0.419 LBF
30.00% 3000 0.01403% 0.421 LBF
40.00% 4000 0.01061% 0.424 LBF
50.00% 5000 0.00857% 0.428 LBF
60.00% 6000 0.00723% 0.434 LBF
70.00% 7000 0.00628% 0.440 LBF
80.00% 8000 0.00558% 0.446 LBF
90.00% 9000 0.00504% 0.454 LBF
100.00% 10000 0.00462% 0.462 LBF
If we calibrated the device against the base and the end user loaded through the
bottom threads, the combined uncertainty of the measurement would go from 0.462
LBF to 1.461 LBF
0.012 % Error with different adapters vs loading against the base
MOREHOUSE 10000 LBF SERIAL NO EXAMPLE
% Force Applied COMBINED UNCERTAINTY FOR K=2
2.00% 200 0.20880% 0.418 LBF
10.00% 1000 0.04396% 0.440 LBF
20.00% 2000 0.02510% 0.502 LBF
30.00% 3000 0.01972% 0.592 LBF
40.00% 4000 0.01745% 0.698 LBF
50.00% 5000 0.01629% 0.815 LBF
60.00% 6000 0.01563% 0.938 LBF
70.00% 7000 0.01521% 1.065 LBF
80.00% 8000 0.01494% 1.195 LBF
90.00% 9000 0.01475% 1.327 LBF
100.00% 10000 0.01461% 1.461 LBF
Copyright Morehouse 2016
22. 10 Volt Versus 5 Volt DC Excitation
22Copyright Morehouse 2016
23. Proper Fixtures Conclusion
Communication with the customer is key to address these
issues. Unfortunately, this does not always happen.
Examples of this scenario are as follows:
• 3rd party suppliers
• Purchasing Departments
• Management who does not care
• Large Companies where it is difficult to reach the
technician using the device.
To minimize these errors, the Ideal solution would be to
calibrate the device with the customer’s adaptors or have
the customer send the appropriate adaptors to the
reference lab for calibration.
23
Copyright Morehouse 2016
27. Examples of Scopes
Torque numbers are questionable. Bending moments,
unsupported arms, etc.., I have a paper from NPL showing most
unsupported arms are no better than 0.02 % at best.
Copyright Morehouse 2016 27
28. Torque Bending Moments
Figure 8 shows:
•Transducer A (2kN-m
transducer calibrated with 1.5
kN-m unsupported beam)
•Transducer B (200N-m
transducer calibrated with .5
kN-m unsupported beam)
•Transducer C (1kN-m
transducer calibrated with 1
kN-m unsupported beam)
“A Comparison Between Supported and Unsupported Beams For Use in Static
Torque Calibrations” by Andy Robinson and Barry Pratt revealed that the weight of
unsupported calibration beams in relation to the capacity of the transducer is
critical.
Copyright Morehouse 2016 28
29. Examples of Scopes – Working
Standards
Another interesting example. Morehouse provides calibration
for X customer. Based on our knowledge the best X customer
can obtain is 0.01 % of applied. It is more probable they are at
0.02 % Then X customer calibrates the device for another lab y.
Y lab then claims values of above. 2 chain links away from
primary standards and better CMC’’s than the secondary
standards labs. ?????? More on this later
Copyright Morehouse 2016 29
30. ASTM E74 Calibration
• The Class A or Class AA loading range
cannot be less than the first applied
non zero force point (400 x 0.132 =
52.8)
• Per Section 8.6 of ASTM E74-13a “The
loading range shall not include forces
outside the range of forces applied
during the calibration”
• Per Section 7.2.1 of ASTM E74-13a
states “In no case should the smallest
force applied be below the lower limit
of the instrument as defined by the
values: 400 x resolution for Class A
loading range & 2000 x resolution for
Class AA loading range”
30Copyright Morehouse 2016
31. ASTM E74 Calibration
• It is recommended that the lower force
limit be not less than2%( 1⁄50) of the
capacity of the instrument.
• Per Section 7.2.1 If the lower limit of
the loading range of the device (see
8.6.1) is anticipated to be less than one
tenth of the maximum force applied
during calibration, then forces should
be applied at or below this lower limit
31Copyright Morehouse 2016
32. ASTM E74 Calibration Data Analysis
• Deviations from the fitted curve
• These are the differences between the
fitted curve and the observed values
• Standard Deviation is the square root
of the sum of all the deviations
squared/n-m-1
• N = sample size, m = the degree of
polynomial fit
• Calibration equation Deflection or
Response =
A0+A1(load)+A2(load)^2+…A5(load)^5
• LLF is 2.4 times the standard deviation
• Class A range is 400 times the LLF. Class
AA range is 2000 times the LLF.
32Copyright Morehouse 2016
33. Test Accuracy Ratio ASTM E74
PRIMARY
STANDARDS
0.005 %
SECONDARY
STANDARDS
CLASS AA
0.05 %
WORKING STANDARDS
CLASS A
0.25 %
TESTING MACHINE
1 %
33
Other types of calibrations performed may not adhere to any TAR, nor should they.
The challenge is figuring out if they are calculating their CMC’s properly.
Primary Standards are required to
assign an ASTM Class AA loading
range
Those Secondary Standards with a
Class AA range can only assign a
Class A loading range
Class A devices are then used to
calibrate the testing machine to
ASTM E4
Copyright Morehouse 2016
34. ASTM E74 STANDARD
• Remember Customer X Scope Example
Copyright Morehouse 2016 34
35. Calibration In Accordance with ASTM E74
Secondary Force Standard – an instrument or mechanism, the calibration
of which has been established by comparison with primary force
standards.
Criteria for Lower Load Limit
• LLF = 2.4 * STD DEV – This corresponds to a 98.2 % Coverage Factor
• Based on LLF or Resolution whichever is higher
• Class A 400 times the LLF or resolution
• Class AA 2000 times the LLF or resolution
35Copyright Morehouse 2016
36. ASTM E74 STANDARD
• ASTM LLF is not the expanded uncertainty!!
Copyright Morehouse 2016 36
37. ASTM E74 STANDARD
• The “Expanded Uncertainty” is less than the
Reference Standard Uncertainty
98.2 % not 99 %Copyright Morehouse 2016 37
38. Scope Issues
→Example:
• An AB acquires a new lab to audit. This lab is performing force
calibration and is referencing the ASTM E74 standard using a set of load
cells, 100K,50K,10K and 1K. This lab had their standards calibrated by
another accredited lab using secondary standards. This lab becomes
accredited and continues to perform Class A calibrations.
→What does go wrong!
• The reference lab would have to be using primary standards to assign a
Class AA loading range.
• The Class AA loading range allows this lab to calibrate devices and assign
a Class A loading range.
• In the example above, this lab would only be able to use their load cells
for ASTM E4 (Field Testing) and not ASTM E74 calibrations.
38
Copyright Morehouse 2016
39. Common Issues
1. CMC values are unrealistic
2. Auditors may not understand the true
uncertainty components in regards to torque
measurements.
3. Measurement Uncertainties reported to end
customer are less than the scope CMC.
4. Lack of understanding the ASTM E74 standard.
39
Copyright Morehouse 2016
40. Calculating Force CMC’s
Guidance Documents
• NCSLI RP-12
• Lack of proper guidance document for non
ASTM E74
• ASTM E74 Appendix combined with A2LA
R205
Copyright Morehouse 2016 40
41. Force CMC for ASTM E 74 Calibrations
We will need the following:
1. Calibration Report for the Device.
2. The uncertainty of the
instrument(s) that were used to
perform the calibration
3. Calibration History (if available)
4. Manufacturer’s Specification Sheet
5. Error Sources, if known
The end user will then have to conduct
the following tests:
1. Repeatability study
2. R & R between technicians
3. Complete Proficiency Testing
Requirements
Copyright Morehouse 2016 41
42. Morehouse CMC
http://www.mhforce.com/s/CMC-CALCULATIONS-FOR-FORCE-MEASUREMENTS.xlsx
Laboratory Temperature
Technician Initials All information entered must converted to like units. FORCE Change From Interporlated Actual Effect
Date: This spreadsheet is provided by Morehouse Instrument Company APPLIED Previous % 0 LBF 0.000015
Range It is to be used as a guide to help calculate CMC 1 300 0.0500% 0.15 0.15 0.0045
Standards Used Ref and UUT 2 600 0.0500% 0.15 0.3 0.009
3 900 0.0500% 0.30 0.45 0.0135
Resolution UUT 0.1 LBF This is the resolution of the Unit Under Test you are Using for the Repeatability Study (What you are testing) 4 1200 0.0500% 0.60 0.6 0.018
5 1500 0.0500% 0.75 0.75 0.0225
REFERENCE STANDARD INFORMATION 6 1800 0.0500% 0.90 0.9 0.027
ASTM E74 LLF * 0.231 LBF 7 2100 0.0500% 1.05 1.05 0.0315
Resolution of Reference 0.023 LBF This should be found on your calibration report. 8 2400 0.0500% 1.20 1.2 0.036
Temperature Spec per degree C % 0.0015% This is found on the load cell specification sheet. Temperature Effect on Sensitivity, % RDG/100 F 9 2700 0.0500% 1.35 1.35 0.0405
10 3000 0.0500% 1.50 1.5 0.045
Max Temperature Variation 11
per degree C of Environment 1 During a typical calibration in a tightly controlled the temperature varies by no more than 1 degree C. 12
Morehouse CMC 0.0016% This is the CMC statement for the range calibrated found on the certificate of calibration. Leave blank if entering Eng. Units
Miscellaneous Error 0.003 %
Conv Repeatability Data To Eng. Units YES
MUST SELECT
Applied Run1 Run2 Run3 Run4 Average Resolution STD DEV CONVERTED Force % Eng. Units Conv % Force % or Eng.
1 300.00 300.5 300.5 300.6 300.6 300.55 0.998170022 0.05773503 0.05762937 300 0.0016% 0.000016 300 %
2 600.00 600.9 600.8 600.8 600.8 600.825 0.998626888 0.05000000 0.04993134 600 0.0016% 0.000016 600 %
3 900.00 901.1 900.9 901 901 901 0.998890122 0.08164966 0.08155904 900 0.0016% 0.000016 900 %
4 1200.00 1201.3 1201.1 1201.2 1201.2 1201.2 0.999000999 0.08164966 0.08156809 1200 0.0016% 0.000016 1200 %
5 1500.00 1501.4 1501.2 1501.4 1501.4 1501.35 0.999100809 0.10000000 0.09991008 1500 0.0016% 0.000016 1500 %
6 1800.00 1801.4 1801.2 1801.3 1801.3 1801.3 0.999278299 0.08164966 0.08159073 1800 0.0016% 0.000016 1800 %
7 2100.00 2101.4 2101.3 2101.4 2101.4 2101.375 0.999345667 0.05000000 0.04996728 2100 0.0016% 0.000016 2100 %
8 2400.00 2401.4 2401.3 2401.4 2401.4 2401.375 0.999427411 0.05000000 0.04997137 2400 0.0016% 0.000016 2400 %
9 2700.00 2701.4 2701.4 2701.3 2701.3 2701.35 0.99950025 0.05773503 0.05770617 2700 0.0016% 0.000016 2700 %
10 3000.00 3001.2 3001.3 3001.4 3001.5 3001.35 0.999550202 0.12909944 0.12904138 3000 0.0016% 0.000016 3000 %
11 0.0016% 0.000016 %
12 0.0016% 0.000016 %
Avg Std Dev of Runs 0.07799573 0.07793211
Ref S/N U-7644 UUT S/N Test
NOTE: ONLY ENTER INFORMATION IN LIGHT GREY BOXESSECTION 1 DATA ENTRY
This can be creep, side load sensitivity or other known error sources. Enter and select Eng. Units or %
Repeatability of UUT Ref Laboratory Uncertainty Per Point
Morehouse
HZ
2/26/2016
1K-5 K
* This is your ASTME74 LLF Found on Your ASTME74 Report. It will be converted to a pooled std dev (drop down for non ASTM)
Ref Standard Stability
Morehouse Measurement Uncertainty Calibration and Measurement Capability Worksheet
START ON THIS SHEET AND FILL IN ONLY LIGHT GREY BOXES
Copyright Morehouse 2016 42
43. Morehouse CMC
http://www.mhforce.com/s/CMC-CALCULATIONS-FOR-FORCE-MEASUREMENTS.xlsx
Laboratory %
Parameter FORCE Range 1K-5 K Sub-Range Force % Reading
Technician HZ 1 300 0.009 0.003%
Date 2/26/2016 2 600 0.018 0.003%
Uncertainty Contributor Magnitude Type Distribution Divisor df Std. Uncert
Variance (Std.
Uncert^2)
%
Contribution
u^4/df 3 900 0.027 0.003%
Reproducibility (see R & R sheet) 2.3094E+0 A Normal 1.000 10 2.31E+0 5.33E+0 99.55% 2.8E+0 4 1200 0.036 0.003%
Repeatability 77.9321E-3 A Normal 1.000 39 77.93E-3 6.07E-3 0.11% 945.8E-9 5 1500 0.045 0.003%
Standard Deviation 96.2500E-3 A Normal 1.000 200 96.25E-3 9.26E-3 0.17% 429.1E-9 6 1800 0.054 0.003%
Resolution of UUT 100.0000E-3 B Resolution 3.464 200 28.87E-3 833.33E-6 0.02% 3.5E-9 7 2100 0.063 0.003%
Environmental Conditions 13.5000E-3 B Rectangular 1.732 200 7.79E-3 60.75E-6 0.00% 18.5E-12 8 2400 0.072 0.003%
Stability of Ref Standard 150.0000E-3 B Rectangular 1.732 200 86.60E-3 7.50E-3 0.14% 281.3E-9 9 2700 0.081 0.003%
Ref Standard Resolution 23.0000E-3 B Resolution 3.464 200 6.64E-3 44.08E-6 0.00% 9.7E-12 10 3000 0.09 0.003%
Miscellaneous Error 3.0000E-3 B Rectangular 1.732 200 1.73E-3 3.00E-6 0.00% 45.0E-15 11
Morehouse CMC 48.0000E-3 B Expanded (95.45% k=2) 2.000 24.00E-3 576.00E-6 0.01% 12
2.31E+0 5.36E+0 100.00% 2.8E+0
10 Formula
NOTE: ONLY ENTER INFO IN GREY BOXES IN SECTION 1 UNLESS CHANGING DIST 2.23
5.16 0.28652%
Applied Run 1 Run 2 Run 3 Run 4 Average Std. Dev. Error Calculated Applied Ref CMC 0
1 300.00 300.0 300.0 300.0 300.0 300 0.057629373 0.0 300 300.00 0.000016 0.0048
2 600.00 600.1 600.0 600.0 600.0 600 0.049931344 0.0 600 600.00 0.000016 0.0096
3 900.00 900.1 899.9 900.0 900.0 900 0.081559037 0.0 900 900.00 0.000016 0.0144
4 1200.00 1200.1 1199.9 1200.0 1200.0 1200 0.08156809 0.0 1200 1200.00 0.000016 0.0192
5 1500.00 1500.0 1499.9 1500.0 1500.0 1500 0.099910081 0.0 1500 1500.00 0.000016 0.024
6 1800.00 1800.1 1799.9 1800.0 1800.0 1800 0.081590731 0.0 1800 1800.00 0.000016 0.0288
7 2100.00 2100.0 2099.9 2100.0 2100.0 2100 0.049967283 0.0 2100 2100.00 0.000016 0.0336
8 2400.00 2400.0 2399.9 2400.0 2400.0 2400 0.049971371 0.0 2400 2400.00 0.000016 0.0384
9 2700.00 2700.0 2700.0 2700.0 2700.0 2700 0.057706174 0.0 2700 2700.00 0.000016 0.0432
10 3000.00 2999.9 3000.0 3000.0 3000.1 3000 0.129041376 0.0 3000 3000.00 0.000016 0.048
11
12
Repeatability (Of Error) 7.19019E-14 0.077932 908.2951062 0
Slope 1
Intercept 0
SECTION 2 DATA ANALYSIS DISTRUBUTION IS THE ONLY COLUMN IN SECTION 2 THAT MAY NEED CHANGED
Slope Regression Worksheet
Average Standard Deviation of Runs
Combined Uncertainty (uc)=
Section 2 Measurement Uncertainty Budget Worksheet Data Analysis (Nothing below should need filled out)
Morehouse
N/A
Standards Used Ref S/N U-7644 UUT S/N Test
populates individual sheets
The grey column Ref CMC is what
Effective Degrees of Freedom
Coverage Factor (k) =
Expanded Uncertainty (U) =
Miscellaneous error
3500
Regression
V
u y
c u x
v
eff
c
i i
ii
N
=
=
å
4
4 4
1
( )
( )
Copyright Morehouse 2016 43
44. Conclusion
Isn’t it our job to audit a lab and ask how they
calculated their CMC? If so, assessor(s) must:
• Assess if they considered the impact on uncertainty
of fixturing and site deficiencies if not being used;
• The assessor should carefully review the contract
review process for completeness based on items
covered today;
• AB Staff & Assessors, are PTs with appropriate
artifacts being completed for force & torque?
44
Copyright Morehouse 2016