3-conductivity calibration training
TRANSCRIPT
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Leading Pure WaterAnalytics
THORNTON
Mettler-Toledo
Conductivity Calibration TrainingVictor M. Braga
Mettler-Toledo Thornton, Inc.
Bedford, MA 0170 !"A
###.thorntoninc.co$
http://www.thorntoninc.com/http://www.thorntoninc.com/ -
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THORNTON To&ic'
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
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THORNTON
A co$&ari'on bet#een an ite$ of $ea'uring e+ui&$ent or te't
e+ui&$ent, #ith a standardor a 'i$ilar ite$ of higher accuracy, for the
&ur&o'e of detection, correlation, and the docu$entation of, the
accuracy of the in'tru$ent or ite$ of e+ui&$ent being co$&ared or
te'ted.
*efinition of Calibration
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ational "tandard'
ASTMA$erican "ociety for
Te'ting and Material'
NISTational In'titute of "tandard'
and Technology
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THORNTON hat I' A"TM
rgani)ed in 1232, it i' one of the large't voluntary 'tandard'develo&$ent organi)ation' in the #orld
ot-for-&rofit organi)ation that &rovide' a foru$ for the develo&$ent
and &ublication of voluntary con'en'u' 'tandard'
It &ubli'he' $ore than 10,000 'tandard' each year in the 7 volu$e'
of theAnnual Book of ASTM Standards
American Society for Testing and
Materials
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THORNTON hat I' I"T
The ational In'titute of "tandard' and Technology i' an agency of the !.".
*e&art$ent of Co$$erce5' Technology Ad$ini'tration
6'tabli'hed in 1301 to 'trengthen the !.". econo$y and i$&rove the +uality
of life by #oring #ith indu'try to develo& and a&&ly technology,
$ea'ure$ent', and 'tandard'.
&erate' &ri$arily in t#o location' 8aither'burg, M* and Boulder, C
National Institute of Standards and Technology
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THORNTON Calibration Traceability
Meter' and calibrator' 9decade bo:e';
- Traceable to ational In'titute' of "tandard' 9I"T;
"en'or'
- Cell Con'tant < Traceable to A$erican "ociety for Te'ting and Material' 9A"TM;
and !ltra&ure ater at 1/=, %/= and 0 =C
-Te$&erature - Traceable to ational In'titute' of "tandard' 9I"T;
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THORNTON In'tru$ent Calibration
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
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>ange Manually "elected
Auto >ange
In'tru$ent calibration a''ure' calibration of all
$ea'uring range'
hy Calibrate "e&arately?
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THORNTON In'tru$ent Calibration
Calibrated@verified #ith decade bo:e'
Calibrated@verified #ith $anufacturer5'
calibrator'
Calibration@verification $ay be &erfor$ed at the
$eter or at the end of the cable
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THORNTON Traceability
Process Instrument
Manufacturers
Calibrators (Decade Bo!
Multi"Meters
Cal #abs
NIST
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THORNTON Conductivity "en'or Calibration
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
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THORNTON Cell Con'tant'
$cm
%&$cm $cm
0.1 con'tant
Cell Constant ' Multilier
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THORNTON Cell Con'tant Traceability
Production Cell
ConstantStandards #ab
Cell Constant
ASTM D$$)*Primary Standard
and Pure +ater
at $*, )*, -%.C
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"olution Conductivity %/ C
A 111,% "@c$ 92.32 -c$;
B 1%,2/4 "@c$ 977.72 -c$;
C 1,02.2 "@c$ 9703.2% -c$;
* 14.3 "@c$ 94,20/.34 -c$;
Dlu' conductivity of #ater u'ed
Standard D$$)*/
"tandard Te't Method' for 6lectrical Conductivity and >e'i'tivity of
ater
(our Conductivity "olution'E A, B, C, *
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0ltraure +ater as a 1undamentalStandard
2ffects of Tem& on 0ltraure +ater 3esisti4ity
Temerature
3esisti4ity
%
)%
-%
5%
6%
$%%
% $% )% 7% -% *% 5% 8% 6% 9% $%%
(Deg C!
$6&$6 M
"cm
%&%** :S;cm7$&68 M
"cm
%&%7$ :S;cm
6&6* M
"cm
%&$$7 :S;cm
(unda$ental "tandard
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!ltra&ure ater "en'or Verification@
Calibration@Certification "y'te$
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THORNTON Traceability
Product
Manufacture
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THORNTON
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
Calibration &tion'
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THORNTON Cell Calibration Method'
Method' u'ed to verify@calibrate cell'
- Verify@calibrate in 'olution #ith 'tated conductivity
"olution $ay be &urcha'ed
"olution $ay be &re&ared to '&ecific conductivity
- Verify@calibrate v'. another calibrated cell
-
>eturn cell to factory for calibration
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Nearly 20%Nearly 20%difference!!!difference!!!
I bought a F'tandardG conductivity 'olution... but #henever I u'e it to verify
the cell con'tant, they never agree. I al#ay' have to re-calibrate.
=Standard
Solution>
Calibrating #ith F"tandardG "olution'
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THORNTON Calibrating #ith F"tandardG "olution'
>ea'on' for the difference bet#een the F"tandardG and #hat the $eter
di'&lay'
- The 'tated conductivity of the F"tandardG i' incorrect
Hou get #hat you &ay for
">M132 < 6ach ti$e the bottle i' o&ened, a &ortion of the 'olution #ill
eva&orate, #hich #ill change the conductivity. "olution 'hould be o&ened forthe $ini$u$ ti$e re+uired to di'&en'e 'olution -- I"T
- Conta$ination of the 'olution by dirty e+ui&$ent
- Conductivity of the 'olution #a' too lo# and #a' conta$inated by C%
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THORNTON Calibrating #ith F"tandardG "olution'
>ea'on' for the difference bet#een the F"tandardG
and #hat the $eter di'&lay'
- The $eter i' not calibrated
Calibrated #rong range circuit'
1. Calibrate@verify all range circuit'
%. Calibrate@verify the a&&ro&riate range circuit
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THORNTON Calibrating #ith F"tandardG "olution'
>ea'on' for the difference bet#een the F"tandardG and #hat the $eter
di'&lay'
- ot accounting for the te$&erature de&endence of the 'olution
Hou are not at the 'tandard te$&erature
Hou are not co$&en'ating #hen you 'hould be
-
ut of the dyna$ic range of the $eter and 'en'or
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THORNTON
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
(ield Calibration
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THORNTON Verify@Calibrate
Portable Cond&;3es
Calibration ?it
Verify@Calibrate V'. Another Calibrated Cell
The #ater 'y'te$ $u't have a 'a$&le
&ort
oint' $u't be air tight
Mu't have ade+uate flo# through the
cha$ber
Be a#are of air ingre''
- C% #ill diffu'e through $o't
&oly$er'
- Doly&ro&ylene #ill &ic u& &&b &er
$eter of length- ylon #ill &ic u& 0.0 &&b &er $eter
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THORNTON Calibration "e+uence
Calibrate %00C> Te$&erature Circuit
Calibrate %00C> >e'i'tance Circuit
Calibrate !!T Te$&erature "en'or
Calibrate !!T cell Con'tant
Portable Cond&;3es
Calibration ?it
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THORNTON *ata Collection'
>ecord A" (!* "en'or Calibration (actor'
- "en'or >6" Multi&lier
- "en'or >6" Adder 9al#ay' J 0;
- "en'or T6MD Multi&lier
- "en'or T6MD Adder
Verify %00C> Calibration
>ecord A" (!* >eading'
Calibrate %00C> 9if re+uired;
Calibrate "en'or5' Te$&erature 9if re+uired;
Calibrate "en'or5' Cell Con'tant 9if re+uired;
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THORNTON Verify@Calibrate
ASTDRe 1.000M-cMSTDT! "#.$%&&''TRe 1.000M-cMD''TT! "#.$%&
"tandard and !!T 'en'or'
are e:&o'ed to the 'a$e
condition'
Verify@calibrate V'. Another Calibrated Cell
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THORNTON Calibration "te&'
1. Calibrate the Metera. Calibrate all re'i'tivity circuit'b. Calibrate all te$&erature circuit'
%. Calibrate the "en'or5' Te$&erature
. Calibrate the "en'or5' Cell Con'tanta. Calibrate !nco$&en'ated@Co$&en'ate
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Te$&erature
Co$&en'ation
Algorith$
Co$&en'ated
>eading'
Co$&en'ation Algorith$
!nco$&en'ated
>e'i'tance
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THORNTON !nco$&en'ated Mode
Calibrating in the !nco$&en'ated Mode
"tandard 'en'or $u't be at the 'a$e te$&erature a' !!T
- Mini$i)e tubing length
-Increa'e flo# rate
- A''ure 'table te$&erature environ$ent
C f
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THORNTON >eturn Cell to Manufacturer
>eturn Cell to Manufacturer for Calibration
- Traceable A"TM calibration
Multi-&oint verification available
- Certificate of calibration &rovided
ThorntonIn
c,
@erebycert
ifies
thatthe
folloAing
Instrument;
sensor
(erformsA
ithin
s(ecificati
ons
" i li d C lib i
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THORNTON
In'tru$ent Traceability
"en'or Traceability
In'tru$ent Calibration
"en'or Calibration
Calibration o&tion'
(ield Calibration
"&eciali)ed Calibration'
(ield Calibration *e$o
"&eciali)ed Calibration
"t d d " C lib ti
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THORNTON "tandard "en'or Calibration
"tandard calibration &rovide' vitalinfor$ation about the 'en'or5'
&erfor$ance
THORNTON 6l t d T C lib ti
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THORNTON 6levated Te$&. Calibration
Calibrating at or near o&erating te$&erature &rovide'E
- 8reater te$&erature accuracy
- More accurate co$&en'ated reading'
THORNTON A"TM V ifi d C lib ti
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THORNTON A"TM Verified Calibration
"en'or i' calibrated at 0.0// "@c$ and verified in A"TM
"olution * 917 "@c$;
1,000 1 S/cm0.01
Solution D
Solution C25C
UPW
USP waters
100 10S/cm
ne Doint A"TM Verified Calibration
THORNTON A"TM V ifi d C lib ti
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THORNTON A"TM Verified Calibration
Drovide' detailed re&ort#ith di'tribution data
ne Doint A"TM Verified Calibration
THORNTON " t C lib ti
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THORNTON "y'te$ Calibration
Calibrate' 'en'or, $eter and &atch cord a' a 'ingle ite$E
- >educe' individual inaccuracie'
- &ti$i)e' 'y'te$ accuracy
THORNTON
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Than HouVictor M. Braga
Mettler-Toledo Thornton, Inc.