Professional gas chromatography service for the process industry

We at UBA have developed comprehensive service solutions for you in the field of process gas chromatography in petrol chemical plants. We offer special tailor made, customer-oriented service packages, covering preventative maintenance, on-call service, upgrades, replacement part management and many more elements all which go towards reducing both peripheral costs and maintenance costs for analytical equipment and ensuring plant availability and cost efficiency.


Some of our customers


Service

Process gas chromatographs in petrol chemical plants are complex measurement systems and ultimately, plant availability depends on their accuracy and credibility. Preventative maintenance carried out by qualified technicians increases the reliability of the analyzer systems through a timely detection of malfunctions caused by external influences, thereby averting potential unit stoppages or failures. As a vendor independent service provider with many years experience working with chemical and petro-chemical plant equipment, we can offer maintenance service products tailored to individual customer requirements.

  • Basic Service Package
    • Customer care provided by qualified service staff, certified according to SCC standards.

  • Remote Service with Selected Response Time
    • According to requirements, customers can select response times ranging from 6 to 72 hours.

  • Spare Part Management
    • Provision of the spare parts required from our warehouse or at the plant on site.

  • Inspection
    • Visual and functional inspection
    • Inspection reports

  • Maintenance
    • Visual and functional inspection and calibration
    • Exchange of wear parts
    • Maintenance reports

  • Reconditioning
    • Visual and functional inspection and calibration
    • Exchange of wear parts
    • Data backup
    • Applications check
    • Full inspection and reconditioning report

Update/Upgrade

Upgrade Total Sulfur Measurement (ABB Vista 2007) using a measurement range of 0 - 10 ppm

In the chromatographic system, the original application of the total sulfur measurement consisted of a selector valve, a back pressure regulator and a flow controller in the splitter output of the liquid sample valve, model 791. Synthetic air reached the evaporation chamber in which the liquid sample was transferred to the gaseous phase via the carrier gas connection in the sample valve and via a transfer connection to the furnace chamber, in which the hydrocarbons were oxidized into CO2 and the sulfur compounds into SO2. The now separated components then reached the FPD detector via the »sulfur dividing columns«.

Disadvantage: the maximum permissible evaporator temperature of the sample valve of 285°C and air as a carrier gas, lead to incomplete or delayed evaporation when high boiling products (e.g. diesel) are used. This results in low response on the detector, peak broadening and tailing.

Conversion to a measurement span of 0 - 10 ppm total sulfur.

Using an additional EPC zone, hydrogen is introduced to the carrier gas inlet on the sample valve as a so-called »sweep gas« in order to attain an improved evaporation of the gas mixture. The transmission of the actual carrier gas (air) is then carried out via the original splitter output. Selector valve, flow controller and back pressure regulator are no longer required and are removed from the furnace chamber. The entire amount dispensed is then oxidized in the furnace to CO2 and SO2. The splitter follows adjacently, before either of the components reaches the chromatographic system which has been extended from 30ft. to 40 ft. sulfur columns. See function diagram.

Advantages: - Complete evaporation of the sample. - Clearer response on the detector. - Symmetrical peak curve.

Furnace view of the original Vista 2007 application. The following are clearly visible: selector valve, flow controller and back pressure regulator.
Furnace view after conversion. The selector valve has been removed and the columns extended to 40 ft.

Repairs

In our workshop we carry out repairs to circuit boards and analytical equipment using certified measuring devices. We offer an exchange service for many construction units such as door units and central service control panels. Any construction units repaired are updated to the newest hard and software standards. After repair has successfully been carried out the customer receives an error report detailing all relevant data. Again, all repairs are carried out using certified measuring devices.

1. Repairing the Vista FPD Photomultiplier Unit

After three to five years, the amplification of the electron multiplier in the photo multiplier decreases. This can be seen in the reduction of the hardware zero value. The sensitivity of the detector is also reduced, so that the response factor must be continually increased. If the hardware reaches zero 7.8 mV, the »Flame Out Alarm« is automatically set off, even though the FPD flame is still burning. The FPD unit photomultiplier tube now needs replacing urgently.

2. Reconditioning catalytic air treatment (Air Treater Model 1)

The Air Treater Model 1 is used for the air treatment of the AAI FID. If the surface is no longer warm to the touch, the heating unit is faulty. To ensure the continued conversion of hydrocarbons into CO2, the catalytic convertor and heating need to be replaced.

Central Service Panel Unit Repair
Chania
AAI Air Treater Modell 1

Products

ABB PGC5000

We carry out repairs and maintenance on your PGC5000.

ABB PGC2000

We carry out repairs and maintenance on your Vista II.

Siemens Maxum II

We carry out repairs and maintenance on your Siemens Maxum.

Siemens PGC302

We carry out repairs and maintenance on your Siemens PGC302.

Yokogawa GC8000

We carry out repairs and maintenance on your Yokogawa GC8000.

Yokogawa Mark II

We carry out repairs and maintenance on your Yokogawa Mark II.

H&B AAI Optichrom Advance

We carry out repairs and maintenance on your Optichrom.

Trainings

We offer basic training and training tailored to your specific needs, if required, on your premises.

Course GC01: Introduction to Process Gas chromatography (2 – 5 days)

Course GC02: Process Gas Chromatograph Vista 2000 Operation and Maintenance (2 – 5 days)

Course GC03: Process Gas Chromatograph Optichrom Advance Operation and Maintenance (2 – 5 days)

training room
training participants

About us

We at UBA have developed comprehensive service solutions for you in the field of process gas chromatography in petrol chemical plants. We offer special tailor made, customer-oriented service packages, covering preventative maintenance, on-call service, upgrades, replacement part management and many more elements all which go towards reducing both peripheral costs and maintenance costs for analytical equipment and ensuring plant availability and cost efficiency.

Uwe Bischoff Analysentechnik was established as a service provider for process gas chromatography in petrol chemical plants by Uwe Bischoff in 1999. After my studies at the Technical University of Darmstadt I started my career in 1991 at Hartmann & Braun in Frankfurt and worked in the field service for analyzer systems as a service specialist for process gas chromatographs both in Germany and abroad. In the course of the transition of H&B to ABB, I became Head of Field Service Instruments & Analytical for South Germany, taking in both company locations at Frankfurt und Nuremberg. Operating from those locations, I was also responsible for the execution of service operations for process gas chromatography across the whole of Germany. These many years experience and the specialist knowledge acquired in the fields of applications, project planning and customer service have made it possible for UBA to develop extensive service solutions in process gas chromatography in petrol chemical plants.


We carry out our work safely

In your and our interest, we set high health and safety standards and make sure that risks to life and health are reduced to an absolute minimum. For this reason, all our employees are in possession of the SCC (Service Contractor Certificate) safety certificate. Because we do not regard ourselves as simply a service provider, rather also see it as our mission to protect plant operators, you can rely on us when it comes to handling hazardous substances and explosion prevention. Be assured, we make sure we carry out our work safely!

managing director Uwe Bischoff
our training - center

Contact

UBA Uwe Bischoff Analysentechnik GmbH

Taunusstr. 27
61267 Neu Anspach

Tel.: +49 (0)6081 9444070
Fax.: +49 (0)6081 9444071

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