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LAR AG Analyzer Accessories

Maintenance-free sampling system FlowSampler

With the optionally and separately available FlowSampler, you can keep your sample preparation filter-less and maintenance-free.


LAR offers a wide range of analysers with tailor made protection housings in accordance to international standards.

Oil in Water Analyser QuickOIL

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FlowSampler Sampling System

The patented FlowSampler from LAR is a specialised sample conditioning system to ensure filtration free operation of the Analyser system.  Filtration devices tend to require high maintenance and can be expensive to run in certain applications. With the FlowSampler device, the need for filtration is completely eliminated.  During the filtration process, the sample matrix changes, which could affect the results obtained.  With the addition of a FlowSampler, we ensure that a true representative sample is analysed.  The FlowSampler requires no maintenance and is self cleaning.  The sample is siphoned-off from the sample stream towards the main flow direction of the water. The device operates on the mass seperation principle and ensures that no blockages occur in the the Analyser system.  Even the most difficult of samples - for instance the raw influent to a WWTP - is no challenge with this addition to the Analyser system.     

The FlowSampler from LAR is installed next to the Analyser system.

Multiple sample stream applications are available to ensure no cross contamination occurs during the analysis process.

Technical Description

The sampling device FlowSampler requires a flow of 2-5 m³/h (max. 10 m³/h) and at a max. counter pressure of <0.2 bar at the sampling tube of the FlowSampler (Di = 3). The temperature of the sample should be less than 50 °C. For sample temperatures up to 90°C, a special PP version of the FlowSampler is available.

The connection of the FlowSampler can be realised as a PVC tube screwing of 32 mm (external) or as tube connection for a pressure hose with 30 mm internal diameter. For the sample drain the same dimension are valid.


   csm FlowSampler

Certified Protective Analyzer Housings

OnLine Analyser systems are installed in all kinds of inductrial environments.  Refineries and chemical plants pose their own challenges due to the explosive gasses, vapours or mists that are often present.  

Analyser systems installed in these facilities must have the proper protective housings and safety features.  In Zone I or Zone II clasified areas, these Analyser system must have the proper certification.  In these areas, the slightest spark could cause an explosion, which could have dire effects.  

Our LAR Analyser systems are supplied with a wide range of tailor made protection housings in accordance to international standards (IEC 60079-14:2007) and regulations. These stand-alone analysers do not always require air-conditioned shelters as their enclosures correspond to requirements of Nema 4x (IP 65) and ATEX for Zone I and Zone II (T3, T4). The Ex proof housings are made specifically for the use within hazardous and potentially explosive environments.


The ex proof classification depends on the type of flammable substances in the specific area, for instance. gas, vapour, mist or a cloud of combustible dust and the probability that these may be present.


Zone 0:  Gas, vapour or mist persent continously,  for long periods or frequently

Zone I:  Gas, vapour or mist likely to occur occasionally during normal operation

Zone II: Gas, vapour or mist no likely to occur during normal operation, but if it does, will persist for a short period only