air flow laboratory - dp diagnostics
TRANSCRIPT
Air Flow
Laboratory
on
ORIFICE METER for
M/s. EXIMP INTERNATIONAL INC, USA.
Page 1 of 23 pages NABL C-0026.
DATE OF RECEIPT
DATE OF CALIBRATION
DATE OF ISSUE
CERTIFICATE NUMBER
19.11.2016 23.11.2016 28.12.2016 CAH 1862 1611 129 Approved Signatory
SUMMARY
Results
Calibrated by Certificate Prepared by Certificate Checked by
Sandeep A. Y.
Sreejith S.
Aswathi Mohan M.
C.B Suresh
CERTIFICATE NUMBER : CAH 1862 1611 129 PAGE 2 OF 23 PAGES NABL C-0026
Ambient
conditions
(Nominal)
996±1 mbar 28±1 °C 63±5 %
Calibration
method
The Calibration is done using Air as per FCRI procedure
WP/AHP/CC/04. The reference used is part of the Closed
Loop Test Facility and consists of Turbine meter. The test
meter is mounted in series at downstream of the
reference meter.
Data The data are given in Table 1. The Prognosis software
data are given in Tables 4 to 14.
Results The results are given in Table 2. And prognosis test
screenshots and photographs of test setup are given in
Fig 1 to 18.
Uncertainty The uncertainty in Calibration is estimated as per NABL
141 ‘Guidelines for Estimation and Expression of
Uncertainty in Measurement’ and FCRI procedure
FCRI\AHP\UE\01. Accredited uncertainty of the
reference system is 0.3% as per NABL Accreditation
Certificate No.: C-0026, Valid Until 21/08/2018. The
uncertainty budget is given in Table 3.
Traceability All instruments, meters used are traceable to National
standards (NPL, New Delhi) and their calibration is
current.
FCRI
Reference
Major equipment used and selected from Equipment List:
HP/QLTY/15, Rev 14, 04-08-2016 is listed below.
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Prognosis test data (Part A)
i) Input the meter inlet diameter to flow computer too high
Objective – Determine whether the DUT detects that the Orifice meter inlet diameter is entered too high. Criteria – DUT should react in accordance with the manufacturers’ specifications.
A] Observed Measured Readings
B] Results displayed on the Prognosis Screen
Fig. 1
C] Conclusion:
Prognosis can also detect and address if the inlet diameter of orifice is high.
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ii) Input the meter inlet diameter to flow computer too low
Objective – Determine whether the DUT detects that the Orifice meter inlet diameter is entered too low.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Results displayed on the Prognosis ScreenFig. 2
C] Conclusion: Prognosis can also detect and address if the inlet diameter of orifice is low.
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iii) Input the meter orifice diameter to flow computer too high
Objective – Determine whether the DUT detects that the Orifice meter diameter is entered too high. Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Results displayed on the Prognosis Screen
Fig. 3
C] Conclusion: Prognosis can also detect and address if the orifice diameter is high.
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iv) Input the meter orifice diameter to flow computer too low
Objective – Determine whether the DUT detects that the Orifice meter diameter is entered too low.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Results displayed on the Prognosis Screen
Fig.4
SCREEN SHOT NOT AVAILABLE WITH FCRI.PLEASE SHARE IF AVAILABLE WITH YOU.
C] Conclusion: Prognosis can also detect and address if the orifice diameter is low.
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v) Faulty DP reading
Objective – Determine whether the DUT detects a leak and faulty DP reading. Criteria – DUT should react in accordance with the manufacturers' specifications. A] Observed Measured Readings
B] Opened equalization valve
Fig.5
Crack opening of the
equalization valve
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C] Results displayed on the Prognosis Screen
Fig. 6
D] Conclusion:
Prognosis can also detect and address if there is any change in differential pressure.
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Prognosis test data (Part B)
i) Orifice plate installed backward
Objective – Determine whether the DUT detects that the Orifice meter inserted is backward. Criteria – DUT should react in accordance with the manufacturers' specifications. A] Observed Measured Readings
B] Reversed orifice plate (Id No. FE-01)
Fig.7
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C] Results displayed on the Prognosis Screen
Fig. 8
D] Conclusion:
Prognosis can also detect and address if the orifice meter is installed backward.
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ii) Worn orifice edge
Objective – Determine whether the DUT detects that the Orifice meter inserted is damaged. Criteria – DUT should react in accordance with the manufacturers' specifications. A] Observed Measured Readings
B] Worn orifice plate (Id No. FE-02)Fig. 9
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C] Results displayed on the Prognosis Screen
Fig. 10
D] Conclusion:
Prognosis can also detect and address if the orifice meter is damaged.
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iii) Partially blocked orifice
Objective – Determine whether the DUT detects that the Orifice meter is partially blocked.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Partially blocked orifice (Id No. FE-03)
Fig. 11
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C] Results displayed on the Prognosis Screen
Fig. 12
D] Conclusion:
Prognosis can also detect and address if there is any obstruction in meterthroat.
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iv) Orifice with less bore
Objective – Determine whether the DUT detects that the inserted Orifice meter is of less bore.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Orifice with less bore (Id No. FE-04)
Fig. 13
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C] Results displayed on the Prognosis Screen
Fig. 14
D] Conclusion:
Prognosis can also detect and address if the orifice meter is of less bore.
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v) Flow straightener blocked (upper side)
Objective – Determine whether the DUT detects that there is a flow disturbance.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Upper side blocked flow straightener
Fig. 15
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C] Results displayed on the Prognosis Screen
Fig. 16
D] Conclusion:
Prognosis can also detect and address if there is a swirl or disturbance inupstream.
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vi) Flow straightener blocked ( lower side)
Objective – Determine whether the DUT detects that there is a flow disturbance.Criteria – DUT should react in accordance with the manufacturers' specifications.
A] Observed Measured Readings
B] Lower side blocked flow straightener
Fig. 17
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C] Results displayed on the Prognosis Screen
Fig. 18
D] Conclusion:
Prognosis can also detect and address if there is a swirl or disturbance in upstream.