EFY Times  
Thursday, September 03, 2015

 
GO
 
 
Importance Of Calibration For T&M Instruments
 
Home >> Electronics >> Features
 
Importance Of Calibration For T&M Instruments  
 
The impact of even a small error in measurement can be tremendous in terms of loss in revenue. Hence, even the smallest of errors in delivery (data accuracy) is unacceptable due to the vast sums of money involved, first, when manufacturers buy instruments, and later when prototypes go into production. Thus, it has become vital to have the equipment calibrated on time.    
Rate this news:  (0 Votes)
Saturday, May 19, 2012 Calibration is the process of configuring an instrument to provide a result for a sample within an acceptable range. To ensure that electronics test equipment performs as per specifications, it is necessary that it receives its periodic calibration. Over a period of time, every device experiences physical stress or variations that cause a decline in its performance levels. Hence, calibration is the key to accurate data. Calibration can be of two types—the first is soft calibration, which is done on the basis of internal signals and software algorithm routines. While hard calibration is done once in a year or two, using industry standard signal generators.

While calibrating, the procedure may vary from product to product. However, this process generally involves using the instrument to test samples of one or more known values called calibrators.

With technological advancements, several instruments like oscilloscopes today provide state of the art design and debug solutions and come with an inbuilt calibrator. Thus, oscilloscopes offer extensive triggers to identify elusive anomalies. However, once they are connected to active probes, calibration is required so as to detect and capture the signal accurately. Agilent offers the widest range of application and customer support locally. Local customer support centre holds an ISO 9002 certification and is an NABL accredited calibration centre. “We offer a very unique web based customer interface to all our serviced install base and a unique offering of onsite calibration called VOSCAL (volume onsite calibration). We also provide calibration and adjustment software for those customers who have the hardware capabilities in-house. These are the same OEM calibration software used in Agilent service centres,” informs Sadaf Arif Siddiqui, technical marketing specialist, Agilent Technologies Pvt Ltd.

calibration, electronics, measurement, electronics instrument




How frequently should calibration be done?

It is difficult to specify the time intervals between calibration. A daily testing control solution of known values can provide a quantitative indication of the instrument’s performance, which can be recorded. If the control data indicates that the instrument’s performance is stable, or is varying randomly but well within the acceptable range of values, then there is no need to recalibrate the instrument. However, if the historical data indicates a trend beyond the limit of the acceptable range, then recalibration is warranted. Informs Nasser Salim Jariwala, head, business development and regional manager, west India, Rhode & Schwarz, “There is no special maintenance required other than the usual procedure followed for test and measurement (T&M) products. We at Rohde & Schwarz recommend calibration of a unit after one year of its operation. Also, all prominent manufacturers have their own calibration facilities in their labs.”

What players offer

Normally, specific adjusters are required to enable the instrument to be calibrated. Additionally, the required test setup and suitable test equipment to perform the calibration procedure is required. Shares Kumaraswamy ML, deputy general manager, TMI and Communications products division, Yokogawa India Ltd, “Scopes usually require periodic maintenance for healthy operations related to its published specifications. Hence, not only do companies offer calibration services for their devices but they also have dedicated service and repair centres to take care of periodic maintenance and repair.”

Says Praveen Kumar Gupta, director, Avante Global Services Pvt Ltd, “An oscilloscope calibrator is an independent device that offers very high accuracy and can be calibrated. These are being offered by a select few calibration equipment manufacturers only. Most manufacturers recognise the need to maintain properly calibrated devices for high accuracy measurements. To help meet calibration needs, manufacturers provide calibration support and services that include manual calibration procedures, services to calibrate products and automated calibration software.”

Adds Nandini Subramanya, marketing communications manager, National Instruments (NI) India, “Every PXI-5922 is factory calibrated to verify that it meets NIST-traceable standards. It has an onboard calibration circuit that corrects it for environmental effects on linearity, gain, offset and input bias current. Also, users can perform self calibration to ensure that the board is within specifications.” With ISO 17025 accredited calibration, NI offers traceable and complaint calibration services to its clients. With traceable calibration, users can track how instruments are performing as well as minimise the time and costs associated with unscheduled downtime and quality issues.

The RTO 1044 series of oscilloscopes offered by Rhode and Schwarz have self-test and self-alignment features. Self-alignment involves performing horizontal and vertical alignment, ideally, 0.5 hours after the power is on. If self-alignment fails, the ‘UNCAL’ flag appears on the screen indicating that calibration has not been processed. Adds Nasser Salim Jariwala, “Both self-testing and self-alignment can be initiated by the customer at any time during the operation of the unit. We are equipped to repair and calibrate these scopes in the event of failure. We have trained service experts and have a NABL-certified lab in Bengaluru.”

While manufacturers do offer calibration facilities, it is the users who have to ensure that the equipment is operating as per specifications. This is achieved by rigorously maintaining a process whereby all the equipment in use is calibrated. This will ensure that all the measurements are accurately made and with sufficient records, any test equipment problem can be traced and rectified.

-- Richa Chakravarty




Print Email Post Comment  (1)
(Total Views: 3254)
 
Share

 
 

1 Comments

Sagar   1173 days ago

This is a most useful contribution to the debate
Reply  
 
Electronics News
   
Gemalto Partners With Samsung For The Launch Of Samsung Pay In Europe With Innovative Security Solutions
Avalue Introduces SLP-SKL, EMX-Q170 And EAX-Q170, Based On The 6th Generation Intel Core Processor Family
‘Little’ Announces Senior Management Hires
Seagate Develops World’s Highest Density Mobile Hard Drive Technology
NASSCOM Partners With Telecom Equipment & Services Export Promotion Council To Organise Indo- Africa ICT Expo 2015
 
 
 
     
     
     
     
     
     
Most popular
 

Daily

Weekly

Overall

Features
Hack 2.0, An Open Source Typeface Is Here!
Bring design to your source code with this open source typeface....
Top Five Open Source Tools For Students And Teachers
Affordable and stress-free open source software tools can help students and teachers make learning fun....
Top Four Markup Languages
Formatting and publishing documentation is a crucial part of programmer's life. Markup languages simplify this task....
Top Five File Managers For Linux
File management programs streamline and simplify the process on your computer....
Now Water Your Lawn Using Raspberry Pi
An open source enthusiast, Robert Booth has developed a prototype of lawn watering system....
Download Mozilla's Open Source Furniture To Furnish Your Office At Low Cost
Mozilla and Nosigner are enabling inexpensive office furniture with open source schematic....
Top 5 Free Ebooks, Movies And Audio Books For Your iPad And Kindle!
Here is a list of best free books, movies and audio books from OpenCulture!...
Chinese Hackers To Attack India
A sophisticated cyber espionage group from China is working day and night to steal sensitive diplomatic information....
Speech System Used By Stephen Hawking Is Now Open To All
Intel has released the open source code of the speech system it developed for Stephen Hawking....
Top 4 Command Line Based Email Clients
Once you master one of these clients, you may not want to go back to GUI based clients....
Five Big Data Projects To Watch Out For!
Here are five important Open Source Big Data projects that you may not know about....
Top Five Community Tools
Top-notch tools can help in growth and maintenance of communities that make real difference....
Top Five Open Source E-Commerce Platforms
Establishing online presence of your business is very simple with these platforms....
Five Things You Need To Know About BLE
Bluetooth Low Energy (BLE) Technology is set to improve the lifestyle of consumers....
LibreOffice 5.0 Brings Major Performance Changes
LibreOffice 5.0 proves to be the best free alternative to Microsoft Office. ...
 
  View All
Dialogue
 
Meet Pranjal Saxena, India's 21 Year Old Electronics Wizard
Milan Ondhia of EFYTimes was in a forthright conversation with the 21 year old Pranjal Saxena from New Delhi; an aspirant at the WorldSkills meet, in ...
“We Offer Managed Document Solutions To CIO And IT Decision Makers”: Canon
Manufacturing within the country will surely reduce the cost of our devices, but manufacturing can begin only if there is the desired eco-system and w...
“One Day The End User Can Open Up A Used Battery, And Use What’s Inside As Barbecue Sauce”
Of course that is not something currently possible, but what B&B Batteries does have are some secret recipes for their very specialised battery design...
We Wish To Procure All The LED Components Within India: Avni Energy
G. Gururaja, director, Avni Energy Solutions Pvt Ltd, shares his views about the expanding LED industry in the Indian market and the company's plans i...
We Have Registered 50 Per Cent Growth In The Last Two Years: Arihant Lighting
Apart from LEDs, Arihant is associated with the promotion of renewable energy in India and therefore, manufactures various energy saving products....
   
  View All
Videos
 
First Look: LG Optimus G
The phone sports a high-end display and comes powered by a powerful processor. ...
Create QR-Codes For Free
TEC-IT releases the freeware QR-Code Studio to provide a quick and convenient way of QR code creation for every application scenario....
DoT Secretary Shares Plans For Growth Of Telecom Sector
M.F. Farooqui has recently taken charge as secretary, Department of Telecom....
Hands-On: Sony Xperia Z
Xperia Z is Sony's first entrant model in the big-screen smartphone category. ...
Hands On: Videocon A30 Smartphone
Videocon, the consumer electronics company which is known for its refrigerators, washing machine and air-conditioner has unveiled its Android-based sm...
   
View All
   
 
IFA 2014
 
IFA 2014: LG Launches 34-Inches Curved Monitor
The company is yet to confirm price and availability of the device....
IFA 2014: Intel Launches First Core M Range Of Processors
This range of processors is tailor-made for 2-in-1 devices which include a tablet and a laptop....
MWC 2014: Tablet Lets People Feel Textures On Its Screen
Now feel what you see on your tablet, by way of ultrasonic waves....
MWC 2014: 4K Android Tablet Games To Kill Consoles, iPad
Tablet makers like Samsung want to beat the iPad by making 4K tabs. ...
MWC 2014: This Vodafone Backpack Helps Get Network In Disaster Situations
Two engineers of Vodafone New Zealand displayed the "mini" mobile network by Vodafone substructure in a backpack. ...
MWC 2014: Wilocity Chipset To Bring 'Lightening' Speed To Mobile Phones
Wilocity has developed a WiGig chipset for mobile phones that will bring lightning-fast wireless capability ...
MWC 2014: Samsung Introduces Octacore, Hexacore Chipsets
The Korean giant, Samsung unveiled two new octacore and hexacore chipsets at MWC 2014, in Barcelona. The company previously used Exynos 5 Octa 5410 ch...
   
View All
   
 
Events
 
19th Consumer Electronic Imaging Fair To Be Held On ...

View All
   
   
 
 

home archives contact us advertise with us
           
Magazines Portals Directories Events News Verticals Educational Institute  
Electronics for You
Open Source for You
Electronics Bazaar
electronicsforu.com
efytimes.com
opensourceforu.com
electronicsb2b.com
Electronics Annual Guide
EFY EXPO INDIA
EFY EXPO WEST
ELECTRONICS ROCKS
EFY Awards
OSIDAYS Expo
Electronics
Infotech
Linux & Open Source
Consumer Electronics
Science & Technology
BPO
EFY Techcenter

Educational Kits
Kitsnspares.com  
 
 
© Copyright 2015 EFY Enterprises Pvt. Ltd.
All rights reserved. Reproduction in whole or in part in any form or medium without written permission is prohibited.
Usage of the content from the web site is subject to Terms and Conditions