How to conduct a Gage R&R (GR&R) on a Digital Multimeter?

H

hfamous

#1
Digital Multimeter is measuring not only Voltage values but also Current and Electrical resistance. If it is so, how can we conduct study on it? Does it mean that we have to conduct separately as in, one for Voltage, one for Current, and one for Resistance? Moreover, can anyone tell me how can I gather data for Current Meter? For resistance, we have resistors... for current and voltage, how?

In analogy, is it correct to say that we can conduct GR&R only to equipment who has standards that are fixed and have known values like for example Caliper to Gauge Blocks?

Thanks in advance...
 
Elsmar Forum Sponsor

Kales Veggie

People: The Vital Few
#2
Re: Digital Multimeter -- how to conduct GR&R?

Hfamous:

Well.. I think that you should do GRR on all 3 modes of the multimeter, if you are using those modes in your process.

Your samples that you use for GRR should be representative samples from your process. For example if you use your multimeter to measure leak current of an electronic device, take a sample from your electronic device.

My advice would be not to use lab. standards, if at all possible. Your GRR should represent as close as possible the actual process.
 

Miner

Forum Moderator
Staff member
Admin
#3
Re: Digital Multimeter -- how to conduct GR&R?

Kales is correct. You should perform a separate study for each mode of measurement that you use. You should also use actual product, not standards. If the parameter to be measured fluctuates or drifts it will impact the measurement just like variation in form will affect a dimensional measurement. Unfortunately that is the reality that you must deal with.

I recommend performing a stability study to identify whether this is an issue.
 
P

potdar

#4
One thing is clear, which everyone also agrees upon. A separate study needs to be done on each scale of measurement offered by the multimeter. Not just separate studies for the parameters, but also for separate scales within the same parameter.

Secondly, GRR is not calibration. So, comparison with lab standards is not the purpose. What we need to check is the consistency of the reading, whether right or wrong. So, for conducting the study, we need to know that the current being measured is not fluctuating while the study is being conducted. Not knowing the exact measurement of the current is perrfectly OK.
 

Miner

Forum Moderator
Staff member
Admin
#5
Not just separate studies for the parameters, but also for separate scales within the same parameter.
Excellent observation and exactly correct. The different scales typically have different resolutions, and the manufacturer's usually base the stated "accuracy" (whatever they mean by that) as a percent of the scale.
 
Thread starter Similar threads Forum Replies Date
D How to conduct a Gage R&R on DC Tools to Torque Bolts Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
L Laser Trackers - How do we conduct a Gage R&R? Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 11
A Procedure on how to conduct a Destructive MSA (Gage R&R) for Force Gages Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 3
F 1. Suggest a Gage for Checking Rounding of Gears 2. When to conduct Stability Study? Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
S Requirement to Conduct New Shelf-life Testing? (re-do testing for design change) EU Medical Device Regulations 3
M Informational US FDA Draft Guidance – Patient Engagement in Design and Conduct of Medical Device Clinical Investigations Medical Device and FDA Regulations and Standards News 0
B Is it necessary to conduct product audit of entire product which is manufactured in the company as per IATF IATF 16949 - Automotive Quality Systems Standard 4
C How frequent to conduct Clinical / Performance Evaluation? CE Marking (Conformité Européene) / CB Scheme 4
S Script of R software to conduct Nested GRR for Destructive Testing Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 0
J ISO 9001:2008 - Can I still conduct Internal Audits in my company? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 7
J Can I conduct Internal Audit for combined ISO 9001, ISO 13485 and ISO 14001? Internal Auditing 37
R How do I conduct my API Q1, ISO compliant internal audits? Internal Auditing 1
P Can internal ISO 17025 Auditor conduct ISO 9001 Audit ISO 17025 related Discussions 7
S CMDCAS ISO13485 - Bilateral agreement with SAI global to conduct Certification Audits ISO 13485:2016 - Medical Device Quality Management Systems 7
S Conduct Customer Satisfaction Survey for every submitted Bid? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 3
T Conduct a fractional factorial 2^13-5 experiment with Minitab Using Minitab Software 4
M Help me understand how to conduct a Chi Square Test Statistical Analysis Tools, Techniques and SPC 3
N How do I conduct Management Review Meetings? Management Review Meetings and related Processes 34
R Can our Supplier's Quality Mgr. conduct Supplier Audit on behalf of manufacturer? 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 4
F Tips, Guidelines and Checklist to conduct Audit of Supplier & Subcontractor Document Control Systems, Procedures, Forms and Templates 5
L How to conduct a Quality Audit based on ASME BPVC VIII-1 requirements Various Other Specifications, Standards, and related Requirements 4
Y FDA - Does anyone have conduct the validation on GR&R worksheet before? Qualification and Validation (including 21 CFR Part 11) 7
I Code of Ethics and Conduct wanted Document Control Systems, Procedures, Forms and Templates 3
C When is the Best Time to Conduct Internal Audits Internal Auditing 22
Q Tips on how to conduct a good Internal Audit Opening Meeting Internal Auditing 19
G How to conduct a Toy Recall (College Question) Customer and Company Specific Requirements 2
N How do I conduct Risk Management for my company? ISO 13485:2016 - Medical Device Quality Management Systems 7
K How to conduct a QCC project Misc. Quality Assurance and Business Systems Related Topics 2
N Tyvek Pouch Seal - Pressure needed to conduct Vacuum Seal Leak test? 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 2
J How to Write the Planned Interval to Conduct Internal Audit, Management Review, etc.. ISO 13485:2016 - Medical Device Quality Management Systems 3
R How to conduct the Threshold Test of Mobile Equipment specified in 3rd edition? IEC 60601 - Medical Electrical Equipment Safety Standards Series 35
S How to conduct Capability Analysis for this data? Statistical Analysis Tools, Techniques and SPC 12
K Can auditors freely conduct confidential interviews, or consent is necessary? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 22
P How to conduct ILCP (inter-laboratory comparison programme) to get ISO 17025 ISO 17025 related Discussions 3
M Do we need to conduct Vendor (Supplier) Evaluation? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 17
K When, whom, how to conduct hazard analysis of PRP?s, OPRP?s and CCP?s? Food Safety - ISO 22000, HACCP (21 CFR 120) 1
S Can a suspended CB still conduct Surveillance Audits? Registrars and Notified Bodies 4
J My mentors insist I use hotel's employee manuals and codes of conduct for my... Service Industry Specific Topics 3
somashekar Sustainability audit per EICC Supplier Code of Conduct Sustainability, Green Initiatives and Ecology 14
Marc Apple Enforces "Supplier Code of Conduct" After Child Labor Discovery After Work and Weekend Discussion Topics 13
B How to Conduct a Review of Customer Order (Contract Review)? Contract Review Process 5
V How many years of experience is needed to conduct the internal audit in my company? General Auditing Discussions 4
Sidney Vianna Can CB's (certification bodies) conduct internal and 2nd party audits? Registrars and Notified Bodies 12
G How to conduct internal audits? Internal Auditing 52
M ISO 17025 Audit check list to conduct horizontal and vertical audits ISO 17025 related Discussions 10
D How to practically-conduct, post production phase ISO 13485:2016 - Medical Device Quality Management Systems 1
S Multilevel Design in Minitab to conduct a DOE - 4 factors and each has 5 levels Design and Development of Products and Processes 4
F How to conduct CMMI appraisal Class C Software Quality Assurance 4
P How to conduct MSA for Rotation Balancing Tester Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 1
H When to conduct a MSA (Measurement Systems Analysis) study Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5

Similar threads

Top Bottom