Emerson Micro Motion SGM Series User Manual

5 Purging and calibration
Topics covered in this chapter:
•
On-site setup requirements
•
Preparing for SGM purging and calibration
•
Purge and purge-cycle the SGM device
•
Calibrate the SGM device
•
Review data for all calibrations
•
Change the label for the active calibration
•
Select the active calibration
5.1 On-site setup requirements
The SGM is shipped with an empty reference chamber and no density calibration factors.
Two on-site setup procedures, purging and calibration, are required to fill the reference
chamber and to determine the density calibration factors.
• Preparing for SGM purging and calibration (Section 5.2)
• Purge and purge-cycle the SGM device (Section 5.3)
• Calibrate the SGM device (Section 5.4)
• Review data for all calibrations (Section 5.5)
• Select the active calibration (Section 5.7)
5.2
Preparing for SGM purging and calibration
Perform SGM purging and calibration on-site.
Before you begin these procedures, you must:
• Know the core process variable that you want to use. In other words, you must know
whether the meter will operate as a specific gravity meter, a molecular weight
meter, or a relative density meter.
• Know whether to use two-point calibration or three-point calibration.
• Have the calibration gases ready.
• Know the appropriate control pressure.
• Be able to control sample pressure and vent pressure.
If you plan to perform multiple calibrations, you must understand the requirements for
multiple calibrations and know which calibration you are performing.
Purging and calibration
Configuration and Use Manual 29

Emerson Micro Motion SGM Series Specifications

General

Brand	Emerson
Model	Micro Motion SGM Series
Category	Measuring Instruments
Language	English