GC analyzers for online measurements of trace impurities in gases

LDetek develops and manufactures online gas analyzers, gas chromatograph systems and related accessories designed to measure trace impurities in industrial specialty and process gases. Their PED detector-based instruments are now available internationally via Michell Instruments and other Process Sensing Technologies companies.

LDetek’s broad range of gas analyzers uses its latest generation of patented* Plasma Emission Detector (PED) enabling measurements down to the sub-ppb_V level.

LDetek’s Gas Chromatographs and analyzers product range can also be adapted to accommodate use Flame Ionisation Detectors (FID) as well as Thermo Conductivity Detectors (TCD) to ensure optimal performance for the relevant application.

*Patent No.:US 9,310,308 B2
Patent No.:US 10,126,278 B2

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MultiDetek 2 Compact Gas Chromatograph

Designed for both industrial and laboratory use, MultiDetek 2 measures multiple trace impurities, with many configurations possible in the same instrument. Based on the new generation of LDetek’s Plasma Emission Detector, versions are also available featuring FID and TCD sensors to extend the measurement capabilities. MultiDetek 2 uses argon, helium or nitrogen as carrier gases.

The wide operating range starts from sub-ppb up to % level measurements for maximum flexibility. The instrument is also designed for simple operation with a user-friendly 8.4” touch-screen interface and front opening door to allow easy access for maintenance.

Highlights

A single instrument allows multiple trace impurity measurements.
Easy to use and maintain, with large touch screen interface, keyboard connection and easy access panel.
Wide measurement range covers sub-ppb to percent measurements.
Ethernet connection allows remote operation.

Applications

Measuring trace impurities in industrial bulk gas production.
Measuring trace impurities for electronics and semi-conductor manufacture.
Monitoring greenhouse gases in laboratory research.
Air analysis for process control or in laboratory conditions.
Detecting trace hydrocarbons in ultra-high purity oxygen.
Monitoring high-CO2 atmospheres in the production of fruit and flowers.
Monitoring CO2 quality for beverage industry

LDetek Application Notes

LD8000 Online trace nitrogen and/or oxygen in argon, helium and crude argon analyzer

The LD8000 is an online analyzer to monitor trace N2 and/or O2 in Ar/He/Crude Argon. A combination of plasma emission and electrochemical technologies achieves a complete, easy to operate and cost effective solution inside one compact 3U cabinet.

Highlights

Trace nitrogen and oxygen in argon/helium/crude argon.
Unique micro-valve for very low dead volume and fast purging time.
Low sample consumption Ethernet for online control.
Optional zero gas calibration free system.

Applications

Quality control for truck filling and gas cylinders.
Impurity of gases in production at air separation units.
Purity of helium cryogenic installations.
Leak detection in argon purification plants.
Control of purity and leak detection in gases used for manufacturing processes and welding.
Monitoring inert gases used for glove boxes.

LDetek Application Notes

LD8000 Plus Online trace nitrogen in argon/helium analyzer

The LD8000-Plus is the ideal gas quality control instrument and will be used to detect trace nitrogen in ultra-pure Argon or Helium. Its integrated ppb sub-system enables unique and very cost-effective performance: low ppb trace nitrogen analysis without the need of a gas chromatograph.

Highlights

Unique Plasma Emission Detector design based on a Duty Cycle Controlled System.
PPB sub-system integrated.
Ethernet for online communication.
Maintenance free Bypass sample flow control to insure high purity.
Low sample consumption.

Applications

Purity of argon or helium in production and storage at air separation plants.
Purity checks of gases in use at speciality gas laboratories.
Impurity detection in gas management systems.
Quality control of argon and helium used in semi-conductor manufacture.

LDetek Application Notes

LD8000 Multigas, Trace nitrogen, oxygen, moisture, hydrocarbons in helium

Designed to monitor trace N2, O2, H2O, CnHm in Helium, the unit is compact and easy to install. Typical applications include: helium cryogenic installations, cryogenic truck loading stations, helium liquefaction plants as well as more general process control and research laboratories.

Highlights

One instrument to measure any combination of N2, O2, H2O and CnHm in a background of helium using one type detector PED technology.
Remote control via the Internet or LAN connection.
Low sample consumption.
Micro-valve for very low dead volume and fast purging time

Applications

Impurity detection in ultra-pure helium in cryogenic air separation installations.
Monitoring impurities in argon and helium at truck loading stations.
Ensuring purity of liquified helium.
Impurity detection in helium in research laboratories.

LDetek Application Notes

LD2000 Online trace total hydrocarbon analyzer

The LD2000 is an easy to use instrument that offers the ideal solution for total hydrocarbon measurements. Compact and robust, it is designed for industrial installations. The LDetek Flame Ionisation Detector (FID) and electronic platform provide the performance quality required by the market.

Highlights

User friendly operation.
Low maintenance with the LDetek FID design.
Ethernet for online communication.
Unique LDetek Electronic flow controller design.

Applications

Quality assurance of gas purity at production and point of use.
Protecting chemical production by monitoring carbon bed breakthrough.
Detecting the presence of hydrocarbons in well-logging.
Industrial safety monitoring, such as perimeter monitoring

LDetek Application Notes

LD8000-TCD Binary Gas Analyzer

The LD8000-TCD is a Thermal Conductivity-based Gas Analyzer used to measure and monitor binary gas streams. It can also monitor one component in a more complex gas mixture when the background gases have the same ratio to each other, or have similar thermal conductivity values.

Highlights

Unique thermal conductivity detector (TCD)
Maintenance free
LAN/web control

Accessories

LDP1000 Gas Purifier for Noble, Nitrogen and Hydrogen Gases

The LDP1000 series is a sub ppb purifier used for generating high purity calibration gas for online analyzers as well as generating high purity carrier gas for gas chromatograph. Designed with two steps of purification, this purifier design ensures no undesired impurity is released during process.

Highlights

Easy to use, compact design
Internal heater, insulation and electronics assembly
Cost effective long-term use with interchangeable getter

LDGSS High Purity Gas System Selector

The LDGSS now brings to the gas industry the most reliable and easy way to provide clean gas to any process GC and on-line process analysers. Its compact design, based on high purity connections with an unique diaphragm valve with no dead volume, is the ideal solution for any stream selection needs. This concept allows a quick response time, the possibility to work in vacuum mode and avoid drifting problems.

Highlights

Easily integrated into any type of process GC or online process analysers
Oxygen cleaned and compatible
No steam-cross contamination

LDGDS Gas Dilution System

LDGDSA Automatic Gas Dillution System

The LDGDSA is a user-friendly gas dilution system that offers flexibility to automatically generate the desired gas mixtures. The Windows user interface gives the ability to control and monitor the mixtures, flows, pressures and concentrations remotely.

Highlights

Automatic calculation of dilution concentrations
Manual or automatic pressure controller
Wide range of dilution ratios (up to 1000:1)
Optional heated gas purifier to generate ultra-high purity zero gas references