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Product Application Notes

Landfill Methane Reclamation and Flare Stack Monitoring

To meet government regulations, landfill managers need to accurately monitor methane gas production, removal, venting, and burning.

The ability to efficiently measure and collect data is an issue not only of resource management but also of compliance and accountability to local, state, and international organizations.

Because releasing methane could be a breach of the operator’s license, an operator could be fined or forced in the future to purchase “carbon credits.”
 

 
Description

Knowledge of both methane flow and temperature at the flare stack can define when CH4 is being emitted to the atmosphere.

To accurately determine methane production levels and flow, a pressure transducer can detect both pressure and vacuum present within the methane production system.

Thermocouples connected to FlexPower Nodes are used to accurately detect the heat of an active flame to verify that the combustion of methane is ongoing. Logically, if the meter is indicating a methane flow and the temperature at the flare stack is high, then the operator is in compliance. If the meter indicates methane flow and the temperature is low, the operator is not in compliance.

The FlexPower Nodes connected to both the pressure transducer and the temperature sensors collect the data and wirelessly transmit the data back to a GatewayPro or host system for logging and analysis to comply with local, state, and federal regulations.

For difficult topologies, SureCross Data Radios can be used to transmit data over obstructions and extend the range of the DX80 sensor network.

 
Application of the Month:

 

Trying to run cable to inaccessible locations can be a nightmare. Our application here shows just how difficult this can be in some businesses. In this case, the requirement is for level measurement in a high water tower.

 

The Solution:

An ultrasonic sensor measuring the water level is mounted at the top of the tank and connected to a wireless battery-powered unit. This transmits the sensor’s output to the Gateway located on the ground and on to the main control system. Wireless units can be solar powered.

 

 
Application of the Month:

Production line needs to determine whether the correct label is applied to each bottle and that the label is aligned correctly.

 

 The Solution:
 

 

 

A PresencePLUS P4 OMNI uses several analysis tools as it inspects lotion bottles passing on a high-speed line. It verifies that the label is correct for the product, is correctly positioned and is aligned correctly relative to the edges of the bottle.

 

 
Application of the Month:

Large retail stores require a simple solution for monitoring customer traffic in various parts of the store. These statistics are  used to optimize placement of products and advertising, thus increasing sales.

 

 The Solution:

Our Wireless system is the simple solution to collect and analyze important consumer shopping habit statiistics. A great deal of information can be gathered about customer movement without affecting the store image or environment. Store operators can scale the system to track exact traffic patterns. The Gateway, located in a location off the sales floor, receives readings from the Nodes via RF link. This information can then be cross-referenced with sales data to make strategic environmental and placement decisions.
Application of the Month:

Track the presence/absence of an car door on a moving overhead conveyor, without available power. The system must withstand an industrial environment and presents a unique problem as conventional wiring is not practical.

 The Solution:
A proximity sensor mounted on each conveyor arm verifies the presence of a door as it progresses. A wireless battery-powered Node transmits the sensor’s output to the Gateway located off the assembly line and on to the main control system.

This concept is applicable in many difficult environments where moving equipment creates a hard-wiring problem e.g. quarries, cranes, water treatment plants

Previous Application Notes