Stylish enclosures for stack sample analysers

P S Analytical needed an enclosure manufacturer to provide products for numerous applications but at the same time be able to have a corporate style for a range of process analytical hardware

P S Analytical of Orpington, Kent were looking for an enclosure manufacturer who could provide products for numerous applications but at the same time be able to have a corporate style for a range of products particularly for process applications.

For over twenty years P S Analytical have been producing instruments for automating the laboratory.

Recently they have extended their applications detecting mercury emissions from coal fired utility stacks and mercury in the Petrochemical Industry fields.

When exhaust stack emissions are monitored a probe is located at the top of the stack and samples sent to analysers that can be located almost anywhere at ground level.

The samples are conditioned in the P S Analytical proprietary system and then the sample transferred to the measurement Spectrometer.

Data is then transferred to the control room where the results are continually monitored and checked.

Using a combination of Rittal enclosures, chosen for their complementary design appearance, the analysers were built into three Rittal Vario Module enclosures that could be linked together and used on a desk or built into a Rittal floor standing PC enclosure.

The connections for mains and signal connectors were housed in another enclosure that was built into the side of the PC enclosure.

The new Top Therm cooling unit was installed because many of the units would be used in countries where the ambient temperature is higher than the maximum operating temperature of the equipment and therefore refrigerated air must be used.

When the analysers are built into the PC enclosure they are easier to move around and make a portable unit.

The stack gas analysers were located at electric utilities coal fired stacks and this places constraints on the overall size due to the fact that the units must be moved around the stack and the physical size of the lift housings is limited.

The lift space is typically 1550mm high whereas the normal enclosure height is 1800mm.

P S Analytical put this problem to Rittal who where able to produce a unit which could carry 21 height units of equipment with an overall height of 1500m, that would fit in the lift.

The problem was compounded by P S Analytical having to complete the installation in less than six weeks.

Despite the enclosure being a special build Rittal were able to deliver ready for the equipment to be installed and delivered in the time frame allowed.

Dr Peter Stockwell of P S Analytical said "We have worked with Rittal on several projects and on each occasion they have been able to meet our service levels and the products have been delivered on time with the same corporate appearance.

Technology transfer is all about people and those people who have interfaced to P S Analytical have responded well, to our mutual benefits".

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