Automatic Sampling System PNS
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Environmental Monitoring Systems Automatic dust sampling system for collecting particulate matter PM10 / PM2.5 / PM1 Types: PNS 16-3.1 / PNS 16-6.1 / PNS 18-3.1 / PNS 18-6.1 The dust sampling system comprises a low-volume sampler unit (LVS) and a filter changer with an intake tube and sampling head (inlet) to collect particulate matter from outdoor air. It functions as per EN 12341:2014 (PM10 and PM2.5) specifications. Dust sampling system for filters with a diameter of 47 mm Magazine with 16/18 filter cassettes Replacement magazine with 15/17 filter cassettes • Regulated Peltier cooler for filter storage in accordance with EN 12341(5.1.3):2014 • Data transmission using integrated GPRS modem The sequential sampling systems in the PNS 16 series are used for continuous collection and monitoring of particulate matter without having to change filters manually. The system is made up from a Model LVS 3.1 or MVS 6.1 sampler unit, an automatic filter changer with 16 filter cassettes, an intake tube and a specimen sampling head. The filter changer housing is ventilated to prevent condensation and icing. Sampling heads such as the models TSP, PM10, PM2,5 and PM1 and the like can be used. The specimen sampling head is attached so as to be gastight at the 40 mm I.D. aluminum intake tube associated with the sampling system; the tube is polished and anodized on the inside. This helps to avoid losses due to particles being deposited on the interior walls as a result of turbulence-induced precipitation, for instance. A magazine with 15 filter cassettes is used in the filter changing unit. The filter cassettes are affixed in the magazines individually by way of leaf springs. Spring action presses each cassette against the smooth upper wall of the cassette compartment so that no volatile matter can escape. This ensures that it will be possible to positively determine the quantities of dust even after several days of sampling. Comde-Derenda GmbH Kieler Strasse 9, 14532 Stahnsdorf / Germany The magazine is moved along the vertical axis, the filter cassettes along the horizontal axis, by way of precisionengineered recirculating ball spindles. The sampling position is opened by a spindle drive and kept closed by a strong spring. Associated with each unit are two magazines with a total of 31 filter cassettes. When the magazine is changed, one filter cassette remains in the exposed position; that is why the replacement magazine may be fitted with only 15 filter cassettes. The magazine serves at the same time as a carrying case. Cassettes for filters with a diameter of 47 or 50 mm may be used; customized cassettes (for ISSeP in Belgium or WINS in the USA, for instance) can be used after modification at the factory. The filter changer is delivered in its standard configuration with filter cassettes for 47 mm diameter filters and an intake tube 800 mm long. Intake tubes in other lengths, up to a maximum of 3500 mm, are available to match customer specifications. The filter changer can be delivered with a Peltier cooling unit to ensure that the temperature of the filters installed will not exceed 23 °C during storage in the unit. Page 1/2 info@comde-derenda.de www.comde-

COMDE DERENDA Dust sampling system Type PNS 16-3.1 / PNS 16-6.1 The following values can be stored on a Secure Digital (SD) card; they may also be transmitted to a PC using an RS-232 port: • Serial number • Filter number • Date and time of day for start and end of sampling • Throughput in m3/h and Nm3/h • Sampling time in minutes • Sampling quantity in m3 and Nm3 • Mean values for atmospheric pressure / temperature / relative humidity • Pressure loss at the filter • Filter storage temperature. The data can be output to existing data acquisition systems via an RS232 port, using the Gemi...