Gas Measurement: Orifice Meters

Orifice Meters introduces the learner to the behavior and measurement of gases flowing through an orifice meter. This course covers the American Gas Association’s (AGA's) installation recommendations for orifice meters, including both mercury manometer-type and bellows-type meters. Also covered is the operation, inspection, and maintenance of pressure and temperature recorders and recorder-chart handling; auxiliary equipment; and gas measurement economics, including the cost of vented gas loss.

Target Audience

Operations personnel who require a fundamental understanding of knowledge to operate and maintain facilities. Also suitable for maintenance and technician personnel whether new to their roles or seasoned experts looking to enhance their skills.

You Will Learn

Participants will learn how to:

• Identify the characteristics of an orifice plate.
• Identify the factors that affect orifice plate performance.
• Describe the relationship between the beta ratio and the proper orifice size to use.
• Describe how a U-tube manometer measures differential pressure.
• Describe how a bellows meter measures differential pressure.
• Describe how and when static pressure is measured.
• Describe how mounts and manifolds are used on orifice meters.
• Identify a chart that measures static pressure, differential pressure, and temperature.
• Describe how to read and interpret pressure and temperature readings from charts.
• Describe the purpose of a dead weight tester.
• Explain the factors than can affect the specific gravity balance.
• Describe how an impulse-torque gravitometer measures specific gravity.
• Describe how a rotameter is used to measure the rate of flow.
• Describe the different ways in which gas is valued.
• Describe the financial impact of gas lost due to venting or flaring.
• Describe the financial impact of recorder chart errors.

Product Details