Biogas
 

Biogas from digesters is typically 60–70% methane and 30–40% carbon dioxide. Biogases fuel engine-generators or gas turbines to produce electricity. They also fuel boilers to produce heat or steam. Biogas utilization has increased in industrial processing, wastewater treatment plants, municipal landfills, and livestock farms.

Biogas level and flow applications

  • BIOGAS FLOW: In all forms of biogas production, safe and reliable gas flow measurement is essential in the collection, disposal or re-use of biogas. Thermal mass flow meters are widely used in landfill, anaerobic digestion and gasification processes. A flow meter measuring biogas must provide low flow sensitivity, low pressure drop, and tolerate temperature and pressure changes.
  • SCRUBBER VESSEL: Essential in gasification processes, scrubbers remove odors, pollutants, acid gases and chemical wastes from biogas. Accurate level monitoring of the scrubbing water necessitates a control to automatically feed the correct amount of make-up water to the recycle reservoir either continuously or on a periodic basis. The level monitoring device for water-out control should be equipped with a level alarm.
  • BIOGAS DEHYDRATION: As biogas emerges from a digester or a landfill it is saturated with water that causes corrosion problems upon condensation. Dehydration systems using air, vacuum and desiccant processes to remove water typically include a holding tank for water drawn off the gas with a level control actuating a valve to vacate the tank at high level. Biogas is dehydrated according to the customer’s specifications for maximum water content. Some uses, such as boiler fuel, require an extremely dry gas.

Related products

Displacer Switch
Magnetrol

Displacer switches – single, dual and tri-switch series

Single-Stage Switches

Series A10 displacer type level measurement units are wide differential units calibrated to actuate as a liquid level reaches a given displacer and to deactuate when the level reaches a second displacer. Single stage, wide differential displacer switches are factory calibrated yet field-adjustable to operate over a wide level differential band.

The minimum differential band is approximately 6 inches (152 mm) in water and varies somewhat with liquid specific gravity. The maximum differential is determined by the length of the displacer suspension cable. Series A15 units are calibrated to operate over a narrow level differential band and are ideally suited for liquid level alarm applications on either high or low level.

Dual-Stage Switches

Series B10 displacer type level measurement units are wide differential tandem switches that are factory calibrated with a choice of several switch operating sequences designed to meet virtually any application.

Series B15 units are narrow differential tandem switches that are factory calibrated. Each switch actuates at a different level.

Tri-Stage Switches

Series C10 displacer type level measurement units utilize three electrically separate control signals in a selected sequence in response to liquid level changes.

Series C15 units are wide differential switches with a choice of several operating sequences combining wide and narrow level differential and are factory calibrated.

Do you want personal advice for your specific control process? 

Contact your local AMETEK Level Measurement Solutions representative!

Find my local representative

Related articles

October 15, 2025

AMETEK Magnetrol USA LLC Appoints TechStar LLC as Exclusive Channel Partner for Oklahoma

March 28, 2025

New Partnership Serving The U.S. Midwest Region

March 10, 2025

The New Old-Fashioned: Enhancing Traditional Level Measurement Techniques

February 24, 2025

Cut Monitor Technologies and Factors that Affect Their Performance

February 12, 2025

Plugged Chute Detection

January 20, 2025

Why Drexelbrook's Level Technology Stands Out Universally

November 7, 2024

BrightTEK™ – Transforming Remote Monitoring and Industrial Efficiency

October 23, 2024

Maximize ROI with Drexelbrook® branded Water Cut Meters: An Investment That Pays Off

October 10, 2024

Why Mechanical Instruments Remain Essential for Industrial Level Measurement

September 23, 2024

Case Study: Not All Guided Wave Radar Transmitters are Created Equal