VICI TGAs provide a complete stand-alone solution for autonomous chromatographic analysis, from sample prep to final report. Everything is included in the TGA housing, from the computer with all the necessary software and hardware to the touch-enabled wide screen display. A wireless mouse and keyboard are also included.

Resultant data can be printed via a network printer or to a local user-provided printer. The base instrument provides results displayed on the front panel, transmitted through the RS-232 serial port, and published through the OPC server. Optional outputs include 4-20 mA analog trending, as well as Modbus and Profibus communication protocols.

With the optional Statistical package, results of averaged samples can be easily acquired for use in calibration and system validation checks. Functionality for copper-based LAN or optional WIFI connection make the instrument available and data accessible. < Show less >

Optional Fast Temperature Programmer (FTP) technology can be used for up to four temperature zones. Those zones can be columns, preconcentrators, heated transfer lines, traps, valves, or detectors.

Ramping capability varies based upon the mass of the item to which the heat is being applied. For example, a 5 m x .32 mm fused silica capillary column can be ramped and controlled at rates up to 3000°C/min, while a 30 m MXT style column may only ramp at 120°C/min.

Each zone can be run independently or programmed to track another zone. Each independent zone also has accomodation to power a fan or cryo-valve as the means of rapid cooling. < Show less >

The design of the TGA allows a very wide range of applications to be run on a single instrument. The standard modules are Detectors, Oven/temperature zones, and Valve controls.

Detectors
Standard configurations use one or two detectors; however, with the modular approach as many as eight detectors can be used. Depending on the requirements, detectors can be run in parallel or in series.

Detectors can be any combination of FID, microTCD, IMS, RGD, or pulsed discharge detectors (PDDs) operating in PDHID, PDPID, or PDECD modes. For example, a PDHID and a microTCD running the same sample provide a useable range from <5 ppb up to>99% concentration.

Oven/temperature zones
The TGA offers support for 12 programmable thermal zones and up to four fast temperature programmed (FTP) zones. FTP zones can be micropacked columns, metal open tubular columns, capillary columns, programmable rate injectors, vaporizers, retention gap, or absorbers/concentrators.

Valve controls

Support is available for up to 16 air actuated and four electrically actuated two position valves, plus four electrically actuated multiposition valves.

TGAs can be specified with an optional Gas Sampling System (GSS), which provides up to 64 streams and four calibration gases and associated methods. When a TGA is configured with the GSS option, the user can enable a batch routine to introduce a selected sample and method, run the analysis with replicates, store the data, integrate the chromatogram, and calculate the results.

The Automatic Calibration option is a configuration that allow user- configurable system suitability checks to be run within a batch of samples or at particular times of day. < Show less >

Redundancy
In addition to the wide dynamic range and low level sensitivity, the TGA can be configured for redundancy so that there is always a hot backup for any two-channel method.

Multiple methods
With the highly flexible graphical user interface (GUI), a single TGA with two or more detectors can be configured for a wide range of methods on a wide variety of gas types. We routinely provide instruments with the standard two detectors plus two additional detectors added as an option. In this setup, two detectors are configured with methods for five or more bulk gases, while the other two run another method and gas type or remain on standby as “hot backup”.

Higher throughput, high speed ovens
If you need to clear heavy compounds or contamination from an injected sample or require a long ramping method for a series of compounds, we can configure one or more modular fast temperature programmed zones to drastically increase throughput. As an added benefit, the FTP zones improve peak shape and height-to-width ratios, which translates into lower LDL performance.

Simplified service
TGA configuration is often highly modular (depending on the analysis), simplying service and replacement if there is ever a need. If the methods and service requirements for your instrument ever change, the modular design also allows a much easier path for upgrades. < Show less >

While the TGA is a fully functional standalone GC, there are those times when a brief look is all that is required to verify that a batch of samples is running smoothly. Why put on your PPE and walk out into the plant or waltz across the lab to check? Just point your PC browser to the TGAs optional secure web-based interface, provide the proper user name and password, and access the full functionality of the TGA.

We can provide remote support through a number of methods which can be tailored to your company's security policies. With appropriate IT approval/assistance, the TGA can be accessed through a secure connection from the internet, allowing a technician to provide needed assistance without a road trip for a service call. A real time and money saver! And remote support after the sale is free for life with a Valco TGA. < Show less >