Month: August 2025

Recommended sample conditioning

system for landfill application

This sample system is designed to bring

the low pressure landfill gas to the NGC at

an increased pressure (10-20 psig) for

injection into the analyzer.

The pressure is increased by a Di-Vac

pump. The operator can adjust the inlet

stream to an appropriate level of around

15 psig. Most of the sample stream will be

vented through the back pressure regulator.

It can be vented to atmosphere or

returned to the process stream since it is

at a higher pressure. The sample stream is

also passed through a sample

conditioning module which insures that

the NGC will be provided with dry,

uncontaminated gas for the analysis.

The components typically found in landfill gas are:

• Methane 54%

• Carbon Dioxide 42%

• Nitrogen 3.1%

• Oxygen 0.8%

• Hydrogen Sulfide less than 1200 ppm

• Carbon Monoxide (indicating under ground combustion)

Stream Composition and ranges for a valid

application for the NGC C3+ Analysis:

• Component Mol%

• Nitrogen 0.1-100

• Carbon Dioxide 0.1-100

• Methane 0.05-100

• Ethane 0.1-100

• Propane 0.05-100

• Hydrogen Sulfide 0.01-0.12

• Oxygen 0.2-20

• Carbon Monoxide 0.2 -100

• Hydrogen 0.1-20

• Ethylene 0.1-100

The NGC8203 gas chromatograph

has a special column set to analyze

the components found in low Btu

“Landfill” gas.

Measurement made easy

Overview

The NGC8203 Gas chromatograph has a special

column set to analyze the components found in low

Btu “Landfill” gas. In addition, Totalflow has

constructed a sample system that provides a

pressurized sample to the NGC from the low

pressures typically found in landfill operations.

The low Btu gas is used primarily as fuel for turbines

to produce electricity in a “cogen” operation. In some

gases the landfill gas is blended with higher Btu

components such as propane to raise the quality of the

gas and allow it to be fed into a transmission pipeline.

Desciption

The 129740-002 offers DC output (Vout), 50/60Hz AC power that can be adjusted between 5V and 6V.

The 129740-002 offers ±6V and an additional -5.2V voltage on a separate line. 

The switch on the backplane is used to select the mains power range. The 129740-002 can be adjusted between 5V and 6V.

The 129740-002 is an intelligent input/output interface, often referred to as intelligent I/O. 

It has the characteristics of high efficiency, intelligence, flexibility and programmability, 

and can realize the input, processing and output of various signals.

This intelligent I/O interface usually uses high-performance processors such as digital signal processors (DSP)

or programmable logic controllers (PLC), which can collect, process and control various input signals, and transmit the processed output signals to various output devices.

In industrial automation and control systems, the 129740-002 intelligent I/O interface is widely used. 

It can be seamlessly integrated with other industrial automation equipment and systems to achieve control and monitoring functions.

For example, it can receive analog signals from sensors and convert them into digital signals for processing and control.

At the same time, it can also convert digital signals into analog signals to drive actuators or other devices.

In addition, the 129740-002 intelligent I/O interface also has a power regulation function to adjust the output voltage between 5V and 6V.

This power regulation function allows it to adapt to different power supply environments and needs, improving its flexibility and reliability.

It should be noted that the specific application scenarios and configurations need to be determined according to the

specific control system and device requirements.

Therefore, when selecting and using the 129740-002 intelligent I/O interface,

it is recommended to consult and discuss with the control system supplier or engineer to ensure that it meets the specific application needs.

PGC5000B Oven:

— Simpler analytical methods

— Creates simple applications with a fixed set of features

— Using multiple ovens creates maximum

application flexibility

— Optimized for maximum analytical capability with

minimal hardware

— All hardware component access points are from the front

of the analyzer

— Flexible platform for product expansion and future

enhancements

— Multiple oven capability

— EPC standard

— Distributed analyzer architecture

— Oven isolation for maintenance and upgrades

— Different oven sizes for application designs

— Analyzer densification for reduction in shelter size

— Industry standard CANopen protocol

— Unlimited application configurations

— Local diagnostic capability

— Controlled and phased analyzer upgrades

— Factory engineered reapplications

— Simple application expansion

Application

Usage

The PGC5000B Smart OvenTM targets simple applications or complex applications that can be made simple. Smart OvenTM

technology can be single or multiple ovens allowing application design flexibility, producing simpler analyses which are easier to

maintain with higher reliability. PGC5000B Smart OvenTM smaller footprint minimizes space and utility requirements, while

increasing analyzer density in shelters.

PGC5000A. Control your Process GC with the

touch of a finger. Measurement made easy.

The new PGC5000A Master Controller features an easy to use touchscreen that

delivers unmatched control of your process gas chromatograph. As part of the unique

ABB multi-oven platform, the PGC analyzer system is suitable for virtually all

measurements in the hydrocarbon processing industry. The new HMI enables quick

and simple integration and commissioning of the ABB GC analyzer system, plus, easy

day-to-day control and plant optimization. Like all ABB GC analyzers, the PGC5000A

delivers high-reliability and precision while minimizing the overall cost of ownership.

Application

Usage

The PGC5000A Controller provides all of the analyzer system

control functions and coordinates internal and external data

activities for the PGC5000B and PGC5000C Smart OvensTM.

The PGC5000A Controller supports Multiple Smart OvensTM

configurations to maximize application flexibility while

minimizing space and utility requirements. Analyzer and

control systems communicate via intrinsically safe (IS) Fiber

Optic with Redundant Ethernet, Modbus or Modbus RTU.