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1.1
i ii
iii iv
v vi
vii viii
ix
1.3
1.4 1.5
1.6 1.7
1.9
DIGITAL CONDUCTIVITY METER
---
Name:
Sl. No.:
NIL O&E 1000-0911
HANNA
Norwest Industries Ltd
House # 517/2, Road # 10 (West Side)
DOHS, Baridhara, Dhaka # 1206
Bangladesh
Description identification of item to be calibrated:
Form No.: FM/22A
CALIBRATION CERTIFICATE OF: DIGITAL
CONDUCTIVITY METER
ELECTRO METER CORPORATION
P- 5, C.I.T ROAD, KOLKATA - 700014.
Page: 1/1CALIBRATION CERTIFICATE NO.: EMC-NIL-OCT-2014-01
NW-01-10-14
ISSUED TO:
Service Request / Order No.:
Applicable specification of item to be calibrated: Accuracy /
permissible limit: Not specified
1.0
1.2
Code No.:
Make:
Range:
Resolution:
As per Test Result
1 S
---
Model / Type No.:
Sensor:
Location:
Primo 5
--
Comparison Method
Conductivity
Error (S)
101
Traceability : Standard Conductivity Solution (100 S, 500 S,
1413 S)2.0
1413
3500
-131400
Basis of calibration:
CALIBRATION RESULTS
Parameter / Range Nominal Value On DUC (S) Standard Value
(S)
Calibrated by: Checked & approved by:
Date: 1-10-14 Date: 1-10-14
Measurement uncertainty (95% of confidence level & At a
coverage factor 1.96 ): 0.572 S
Remarks:Performance check has been carried out since the
accuracy of DUC was not specified by the customer.
DUC- Device under calibration F.S.-Full Scale
1100
503
Physical status of the DUC: OK
Frequency of calibration:
64% RH
Temperature:
Date of receipt of item:
Calibration valid upto:
1-Oct-2014
30-Sep-2015 12 months
1.8 Environmental condition
during calibration
Date of calibration: 1-Oct-2014
20C 2C
Humidity:
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Date : 13/05/2011
Duc reading standerd scale reading Rev. : 0
1.025 0.0004
0.0004
CALIBRATION CERTIFICATE NO.:
S-V8-EMC-FF-NRST-2-Sep-2013-NW-34-09-13
1.028 0.00040.0004
1.029 0.0004
0.0004
1.0295 0.0004
0.0004
1.033 0.0004
0.0004
Duc reading
1.025
1.028
1.029
1.0295
1.033
Uncertanity of hydrometer:
Graduation of duc hydrometer Uw=
A type Uncertanity Ua=Uw/2*SQRT(3)=
1.024
1.024
1.0291.029
1.0285
1.031
1.0285
1.028
1.028
1.031
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Uncertanity due to standed used
Uncertanity as reported for 1st hydrometre=Us1/k
Uncertanity due to temp correction
Combined uncertanity=SQRT(Ua*Ua+Us*Us+Utc*Utc)=
Expanded uncertainty at 95% CL =
Us=SQRT(((Us1*Us1)+(Us2*Us2))4)=
Uncertanity as reported for 2st hydrometre=Us2/k
Utc= TC/(2*SQRT(3))
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Temp correction Actual re Date : Scale error
-0.000307 1.02409 0.00091
-0.000307 1.02409 0.00091
-0.000309 1.02909 -0.00109-0.000309 1.02909 -0.00109
-0.000309 1.028591 0.00041
-0.000309 1.028591 0.00041
-0.000308 1.028092 0.00141
-0.000308 1.028092 0.00141
-0.000309 1.03109 0.00191
-0.000309 1.03109 0.00191
Std reading Error
1.02409 0.00091
1.02909 -0.00109
1.02859 0.00041
1.02809 0.00141
1.03109 0.00191
0.002
0.00057735 3.333E-07
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0.00025 6.25E-08
0.00025 6.25E-08
0.000176777 3.125E-08
0 0
0.001207615
0.00052
0.000603807
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mean error
0.00091
CALIBRATION CERTIFICATE OF: CONDUCTIVITY METER
mean error-0.00109
mean error
0.00041
mean error
0.00141
mean error
0.00191
Front page
fixed
to be changed
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Duc reading standerd scale reading certificate correction
1.025 0.0004
0.0004
1.028 0.00040.0004
1.029 0.0004
0.0004
1.0295 0.0004
0.0004
1.033 0.0004
0.0004
Duc reading
1.025
1.028
1.029
1.0295
1.033
Uncertanity of hydrometer:
Graduation of duc hydrometer Uw=
A type Uncertanity Ua=Uw/2*SQRT(3)=
1.0285
1.0285
1.024
1.024
1.0291.029
1.028
1.028
1.031
1.031
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Uncertanity due to standed used
Uncertanity as reported for 1st hydrometre=Us1/k
Uncertanity due to temp correction
Combined uncertanity=SQRT(Ua*Ua+Us*Us+Utc*Utc)=
Expanded uncertainty at 95% CL =
Utc= TC/(2*SQRT(3))
Uncertanity as reported for 2st hydrometre=Us2/k
Us=SQRT(((Us1*Us1)+(Us2*Us2))4)=
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Temp correction Actual reading Scale error
-0.000307 1.02409 0.00091
-0.000307 1.02409 0.00091
-0.000309 1.02909 -0.00109-0.000309 1.02909 -0.00109
-0.000309 1.028591 0.00041
-0.000309 1.028591 0.00041
-0.000308 1.028092 0.00141
-0.000308 1.028092 0.00141
-0.000309 1.03109 0.00191
-0.000309 1.03109 0.00191
Std reading Error
1.02409 0.00091
1.02909 -0.00109
1.02859 0.00041
1.02809 0.00141
1.03109 0.00191
0.002
0.00057735 3.333E-07
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0.00025 6.25E-08
0.00025 6.25E-08
0.000176777 3.125E-08
0 0
0.001207615
0.001
0.000603807
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mean error
0.00091
mean error-0.00109
mean error
0.00041
mean error
0.00141
mean error
0.00191
Front page
fixed
to be changed
