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Fluke Calibration Blog
Calibration Equipment & Standards and Calibration Software
May 28, 2019
The Fluke 8588A & 8558A Benchtop Multimeters & Roger Peniche, Director of Engineering at Fluke Calibration
Engineering innovation to solve customer problems
This year on World Metrology Day, I spent time reflecting on the dedicated engineers I’ve had the pleasure to work with during my tenure at Fluke Calibration and the innovations they’ve dedicated their careers to achieving. Our engineering fleet spans the globe, several generations, and numerous calibration and engineering...
May 15, 2019
Choosing a calibration management software application requires careful investigation. Here’s a checklist of criteria to keep in mind.
Does the calibration management software automate your calibrators?
Does it automate your devices under test?
Are calibration procedures available or can you create them easily?
Does the manufacturer offer training?
Does the manufacturer offer support? What kinds of support?
Telephone
Knowledge base
User groups
Bulletin boards/user forums
Does the...
May 15, 2019
What is Electric Meter Testing Equipment?
Billing errors in sites with AMI and traditional meters can cost utility companies millions of dollars every year from system installation errors and degraded components. Electric meter testing equipment, or site analyzers, are used to verify a meter installation to prevent costly errors in commercial installations.
These hand-held, battery operated analyzers can verify meter accuracy and report actual site energy usage within a certain accuracy...
May 15, 2019
If you’ve purchased instruments from a calibration equipment manufacturer, you know that the equipment is highly technical and can cost a pretty penny. Because of the investment, it’s wise to evaluate your equipment manufacturer to make sure you get the best return.
Before you buy, consider how a manufacturer performs in the following 10 criteria:
10 Criteria to Consider When Purchasing a Calibrator from a Calibration Equipment Manufacturer
Quality. Good return on investment (ROI) and...
Apr 17, 2019
RF and microwave calibration is one of the most complex areas of metrology, with many opportunities for human and measurement errors. Here are the top 5 sources of error:
Mismatch errors. Mismatch errors are one of the most significant contributors to errors and uncertainties in RF and microwave calibration. Mismatch error depends on the source and load match. The quality of the source and load match contributes to the mismatch error. Avoid introducing excessive mismatches by using worn or...
Apr 17, 2019
The best/proper method to clean your infrared calibrator target
The black body paint on the target of your infrared calibrator is very delicate. To remove the dust or debris from the paint, the only thing you can do is use compressed dry air. The dry air must have no oil and no water in the line or hose. Use a filter on an air hose to remove the oil and an air dryer to remove the water. Have the compressed air set to about 100 psi.
Some items like compressed air in a can will contain a...
Apr 17, 2019
자체 압력 교정을 할 때 고려해야 할 것
만약 압력 교정 작업을 아웃소싱을 고려하지 않았었다면, 귀하의 실험실에 자체 교정 업무를 고려하셨을 것입니다. 여기 자체 압력 교정을 할 때 주의해야 하는 세 가지 주요 영역이 있습니다.
1. 트레이닝
현대 압력 표준은 보다 직관적이며 많은 압력 컨트롤러가 소프트웨어를 통해 자동화될 수 있어 간단한 트레이닝을 통해 쉽고 반복적으로 교정을 진행할 수 있습니다.
2. 장비
압력 교정 장비의 다양한 옵션이 있지만 필요한 부분에 집중하여 찾아보면 그 선택 폭을 줄일 수 있습니다.
• 광범위한 작업을 수행하기 위한 장비를 찾는다면, 다양한 압력 범위를 처리하도록 모듈을 설치하여 수행하는 모듈 교정 장치가 적합합니다.
최고의 정확성 을 원한다면, 넓은 범위에서 완벽한 판독값을 제공하는 유압 분동식 테스터 가 적합합니다.
낮은 비용 이 중요한 경우라면, 유압 압력 비교 측정기와 기준 압력 게이지를 사용하시면 됩니다. 이 방법은 다른 솔루션만큼...
Apr 16, 2019
압력 교정 장비를 결정하는 방법
수천 가지의 압력 측정 장치가 있습니다. 교정을 위해 투자할 계측기를 어떻게 결정할 수 있을까요? 압력 교정 장비구매를 고려할 때는 다음 두 단계를 수행하십시오.
테스트 장치 (DUT)와 압력 교정기의 사양을 비교하십시오. 게이지, 트랜스미터, 트랜스 듀서 및 이와 유사한 압력 측정 장치에는 압력을 얼마나 잘 측정하는지를 설명하는 사양이 있습니다. 압력 교정기에도 사양이 있습니다. 교정기가 압력 측정 장치를 교정하기에 충분히 정확한지 확인하려면 TAR (테스트 정확도 비율)을 사용하여 측정 장치와 교정기의 사양을 비교해야 합니다. TAR은 명시된 DUT 정확도와 교정기 정확도 간의 비율입니다. 좋은 TAR은 일반적으로 4 : 1입니다. 4 : 1 비율을 유지하면, 특히 오차가 설정된 허용 오차에 가까운 경우, 교정 결과에 따라 압력 게이지를 잘못 수락하거나 거부할 가능성이 줄어 듭니다.
Rangeability를...
Apr 16, 2019
If you are calibrating a medium to high accuracy RTD, you will probably use the characterization method of calibration. Characterization is the type of calibration in which the device under test (DUT) resistance is determined at several temperature points and the data are fitted to a mathematical expression.
To calibrate an RTD, perform these steps:
Place the reference probe and the DUTs in the temperature source. Make sure they are all placed as close together as possible, in a radial...
Apr 15, 2019
What knocks a digital instrument “out of calibration?”
Three common causes of calibration problems are:
Component shift. First, the major components of test instruments (for example, voltage references, input dividers, current shunts) can simply shift over time. This shifting is minor and usually harmless if you keep a good calibration schedule; this shifting is typically what calibration finds and corrects.
Drops. Suppose you drop a current clamp — hard. How do you know that clamp will...
