Scanner 2000 Steam Mass Flow Transmitter ... - Spirax Sarco

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Section 2 Scanner ® 2000 microEFM 5. Connect to the Scanner 2000 with the ModWorX Pro software. Click on the Calibrate Inputs menu button and proceed through the calibration per instructions in the ModWorX Pro Software User Manual. 6. At the appropriate software prompt, enter a known pressure. 7. Apply the same amount of pressure to the MVT using the simulator (see the ModWorX Pro Software User Manual for complete instructions). The ModWorX Pro software will display a measured value and a percentage of change. 8. Repeat steps 6 and 7 as necessary to enter multiple calibration points. 9. When all calibration points have been entered, click Save Changes to apply the new calibration settings. To verify the static pressure, perform the steps described in the calibration procedure above, except instead of choosing Calibrate from the Change Calibration Task window, choose Verify. You will be prompted to enter an applied value, and you will apply the same amount of pressure to the MVT, just as in the calibration process. The ModWorX Pro software will display a measured value and a percentage of error. When you click Save Changes, the measured values are written to memory for reference. Differential Pressure Calibration and Verification The static pressure and differential pressure inputs are calibrated and verified before the Scanner 2000 leaves the factory, and recalibration in the field may or may not be required. To comply with API standards for verification, “as found” readings should be recorded at approximately 0, 50, and 100 percent of the operating pressure range, increasing, and at 80, 20 and 0 percent of the operating pressure range, decreasing. For example, the differential pressure measurements of a 200-In. H2O sensor should be verified at 0 In. H2O, 100 In. H2O, 200 In. H2O, then at 160 In. H2O, 40 In. H2O, and 0 In. H2O. ! 54 WARNING: Do not subject the Scanner 2000 microEFM to unnecessary shock or over-range pressure during maintenance operations. To calibrate the differential pressure 1. Close the bypass valves to isolate the pressure below the manifold. 2. Open the equalizer valves and vent valve to purge the lines. 3. Close the high-pressure side equalizer valve. 4. Connect a pressure simulator to the high-pressure side of the manifold. 5. Connect to the Scanner 2000 with the ModWorX Pro software. Click on the Calibrate Inputs menu button and proceed through the calibration per instructions in the ModWorX Pro Software User Manual, Part No. 9A-30165025. 6. At the appropriate software prompt, enter a known pressure. EQUALIZER BYPASS/ BLOCK EQUALIZER 7. Apply the same amount of pressure to the high side of the MVT using the simulator (see the ModWorX Pro Software User Manual, Part No. 9A-30165025, for complete instructions). The ModWorX Pro software will display a measured value. VENT BYPASS/ BLOCK
Scanner ® 2000 microEFM Section 2 8. Repeat steps 6 and 7 as necessary, to enter multiple calibration points, and apply the new measured values from the ModWorX Pro interface. 9. When all calibration points have been entered, click Save Changes to apply the new calibration settings. To verify the differential pressure, perform the steps described in the calibration procedure above, except instead of choosing Calibrate from the Change Calibration Task window, choose Verify. You will be prompted to enter an applied value, and you will apply the same amount of pressure to the MVT, just as in the calibration process. The ModWorX Pro software will display a measured value and a percentage of error. When you click Save Changes, the measured values are written to memory for reference. Placing the Scanner into Operation To put the Scanner into operation; 1. Close the vent valve. 2. Open the equalizer valves. 3. Open the bypass/block valves to allow pressure to be supplied to both sides of the MVT. 4. Close the equalizer valves. 5. Open the vent valve (optional, some users may choose to leave the vent closed). Industry Standard Compliance EQUALIZER BYPASS/ BLOCK EQUALIZER To ensure measurement accuracy, flow runs and turbine meter runs must be installed in accordance with industry standards. Table 2.2, page 56, and Table 2.3, page 57, reference the sections in these standards that apply specifically to flow run and hardware installation. Table 2.4, page 57, references standards that apply to fluid properties for gas, steam, and liquid measurement. Fluid properties used for gas measurement calculations such as compressibility factors and density are in accordance with AGA Report No. 8. For steam measurement, algorithms are based on the IAPWS Industrial- Formulation 1997 (IF-97) standard. For temperature-compensated liquid measurement, fluid property calculations are based on API-2540 - 1980, Petroleum Measurement Tables. Heating values for gas measurement are calculated in accordance with AGA Report No. 3, Part 3, Appendix F, using the constants defined in GPA 2145. For more information, see the ModWorX Pro Software User Manual, Part No. 9A-30165025. VENT BYPASS/ BLOCK 55
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