Piston Gas Flow Meters
Last Updated: April 1, 2025
Description
Piston gas flow meters are devices designed to measure the flow rate of gases. They operate by allowing gas to pass through a chamber where a piston moves in response to the flow, providing a measurement of the gas volume passing through the meter.
Working Principle
Piston gas flow meters work by utilizing a piston that moves within a chamber as gas flows through the device. The movement of the piston is directly proportional to the volume of gas passing through, allowing for accurate measurement. These meters are particularly useful because they provide precise volumetric flow measurements, which are essential in applications where accurate gas flow data is critical.
Applications
Unfortunately, specific applications for piston gas flow meters are not detailed in the provided documents. However, they are generally used in industries where precise gas flow measurement is necessary, such as in chemical processing or HVAC systems.
Advantages over other Electrical Products
The documents do not provide specific examples of advantages of piston gas flow meters over other electrical products. However, piston gas flow meters are typically valued for their mechanical simplicity and ability to provide accurate volumetric measurements without the need for electrical power.
Limitations
Piston gas flow meters have several limitations. They contain moving parts, which can wear over time, potentially leading to maintenance issues. They may also experience flow blockage at zero flow due to solid impurities, and they can be sluggish in response to quick changes in flow. Additionally, they are affected by high differential pressure, which can pose a risk of over speeding .
Considerations
When considering piston gas flow meters, it is important to evaluate initial costs, operating expenses, and maintenance requirements. The presence of moving parts means that durability and maintenance costs can be significant factors. Additionally, the accuracy of these meters can be influenced by the condition of the moving parts and the presence of impurities in the gas flow. Installation and replacement costs should also be considered, especially in environments where access to piping is limited .
from OMEGA Engineering, Inc.
Available in 1/2", 3/4", and 11/4" sizes with anodized aluminum, brass and/or stainless steel flow cartridges. Comes with 4.5 m (15') of stripped end integral cable. In the field, integral cable can be extended up to 90 m (100') with shielded copper cable. Units are securely protected in a sturdy... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.25
- End Fittings: In-line Threaded
from Malema Sensors
The M-200 Series flow switches are engineered and field tested for sensing increasing and decreasing flow rates of gases or liquids. Pressure variation effects are minimal. This series features such versatility, economy, and accuracy that they can be used in virtually any application requiring... [See More]
- Meter Technology: Piston
- End Fittings: In-line Threaded
- Mounting: In-line
- Process Media Type: Liquid; Gas
from OMEGA Engineering, Inc.
The FLMG flowmeters feature rugged construction, easy installation and direct reading flow rates of air. The units are calibrated at 100 psi pressure suitable for most compressed pneumatic applications. The flowmeters utilize a spring and piston type assembly which enables them to be mounted in any... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.25 to 1.50
- End Fittings: In-line Threaded
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.25
- End Fittings: Flare
from OMEGA Engineering, Inc.
OMEGA ® multi-pressure pneumatic flowmeters feature a rugged anodized aluminum body design and easy installation. For air/compressed gas applications, these flowmeters include ranges from 5-5.0 SCFM to 50-1000 SCFM, at operating pressures up to 1000 psig. Their multi-pressure scales (from 40-130... [See More]
- Meter Technology: Piston
- End Fittings: In-line Threaded
- Mounting: In-line
- Process Media Type: Gas
from Malema Sensors
The M-50 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.12 to 0.25
- End Fittings: In-line Threaded
from OMEGA Engineering, Inc.
This rugged direct-reading flowmeter monitors air flowrates to determine optimum performance, flow regulator settings, or pneumatic system performance. It is intended for use in mobile or industrial pneumatic systems as well as air power operated hand tool systems. These flowmeters feature direct... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.50
- End Fittings: In-line Threaded
from Malema Sensors
The operating principle is based on a free floating magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can... [See More]
- Meter Technology: Piston
- Mounting: In-line
- Pipe Diameter: 0.25 to 0.38
- End Fittings: Flare
from Malema Sensors
The operating principle is based on a magnetic piston which responds only to the motion of fluids within the line, not to static or system pressures. In the presence of fluid flow, controlled movement of the piston actuates an external hermetically sealed reed switch. This switch can be used to... [See More]
- Meter Technology: Piston
- End Fittings: In-line Threaded
- Mounting: In-line
- Process Media Type: Liquid; Gas