DIGITEL DPA16
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Technical Office for Digital Electronics Electronic Apparatus Engineering Measuring Instruments for Environmental Protection DIGITEL DPA16 Low Volume Aerosol Sampler (LVS) Digitel DPA16 LVS: - Filter diameter 47 mm - Constant and precise flow - For PM2.5 and PM10 measurements according to EN12341 - TSP, PM10, PM2.5 and PM1 inlets - weather proof and light weight Wide range of options and accessories: - Different housings - Meteo sensors - SMS communication - Installation material Introduction DIGITEL Low Volume Samplers DPA16 are fully automatic systems to sample dust and aerosol particles for later assessment and analysis (gravimetric and analytical determination) in accordance with EN12341. The sampler operation range in standard execution is 5 to 50 litres per minute (0.3 to 3m³/h). The DPA16 is a single filter sampler with the filter holders integrated in the inlet. The blower starts sampling at pre-set time for a pre-set period. The field housing of the DIGITEL LVS DPA16 is suited for outdoor installation. It is easy to transport and because of a good sound insulation very quiet. Superior workmanship in sampler mechanics backed by the latest technical and electronic control guarantee a long lifetime and absolutely reliable operation. An integrated microprocessor unit controls the sampling at the pre-set time and collects all relevant data and events. The status “work” and “pause” can be programmed with a resolution of one minute. The constant flow of sampled air through the filter is dynamically controlled, so that this value is kept at good reproducibility and at long-term stability which keeps to a minimum of electrical power consumption. The mechanical components which are in contact with measuring air are coated with a highly corrosionresistant and extremely smooth surface. The DPA16 has different interfaces for data transmission and remote control. The filters can be changed without additional tools. Design and Operation The air is sampled through a TSP/PM10 / PM2,5 / PM1 inlet, using a sampling tube. The air flows vertically from the top to the bottom through the filter placed in the inlet. The upper part of the flow chamber works like a diffusor and ensures uniform loading of the exposed circular filter. The pressure drop across the filter is limited, so that a rupture of damp or extremely loaded filters is prevented. The transported air quantity is measured by a Venturi type orifice flow meter The blower is speed controlled, so that the air quantity keeps the set-point value with minimal power consumption. Air pressure and temperature are measured upstream of the flow meter and continuously averaged by the electronic control unit. A realtime protocol states sampling volumes yielding from the sampling time and controlled volume flow as the core information. The sampling protocol lists the effective and the standardized averaged values of pressure and temperature, volume and the operating status as well as the failure s

Technical Office for Digital Electronics Electronic Apparatus Engineering Measuring Instruments for Environmental Protection We are building high-precision samplers for dust, gas and rain since 1970. Main switch Flow rate sensor Touch screen Frequency inverter Easy programming The touch screen allows simple and user friendly programming. The current state of the sampling course (e.g. program status, status periods, failure indication messages) is shown on the display. In case of power failure, all settings are kept stored. Therefore, programmed filter change times are not postponed in case...

Technical Office for Digital Electronics Electronic Apparatus Engineering Measuring Instruments for Environmental Protection We are building high-precision samplers for dust, gas and rain since 1970. Technical Data Flow rate Filters Time programs 5 – 50 l/min d = 47 mm, flowing area d = 40 mm Work, Pause (0 to 59’999 minutes each), start time adjustable, using date and time <2% > 16’000 h Max. 800 mbar RS232C, USB, Ethernet, RS485 DIGITEL, Bayern-Hessen, AK 230V AC / 50-60 Hz; max. 2A/400 W Inlet heating / indoor heating / reserve heating -10° to 50° C; 0 % to 95 % RH with interior heating,...