Description
DIGITEL High Volume Samplers DHA-80 are fully automatic systems to sample dust and aerosol particles for later assessment and analysis (gravimetric and analytical determination). The sampler operation range in standard execution is 100 to 1’500 litres per minute (6 to 90 m³/h). The DIGITEL HVS DHA-80 has a magazine of 15 filters stretched in filter holders for up to 2 weeks of daily sampling. They are automatically changed to the flow position at the preset time. The devices can be integrated in automatic monitoring systems via various interfaces. The field housing of the DIGITEL HVS DHA-80 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 electronic control guarantee a long lifetime and absolutely reliable operation.
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Specifications
Sampling
- Flow rate: 100-1,500 l/min, delivered with 420-600 lpm glass tube as a standard
- Filter: round filters of d = 150 mm (flowing area of d = 140 mm), other filter diameters on request
- Filter changer capacity: 15 filters in filter magazine plus one in sampling position
- Application range -20° to 50°C; 0 % to 95 % RH
Operating points
- PM inlets for 500l/min and 1133 l/min as a standard
Time programs
- Work, Pause (0 to 99’999 minutes each)
- Start time adjustable, using date and time
- Different sampling cycles programmable
Protocol files
- Data of filter, temperature, pressure, humidity, flow, blower load
- Calibration history, sensor mean value record file
- Settable averaging period 1 min – 24 h
Accuracy
- Reproductible tolerance of settings: +/- 0.45 %
- Accuracy of measured flow volume: +/- 2 %
- Volume flow control accuracy: < 5 % of MRAV (uncalibrated)
Operating data
- Power supply: 230 V AC/ 50-60 Hz, max. 1700 W
- Heating 24 V, max. 160 W
- Mean life cycle suction unit > 36’000 h
- Negative pressure at 1.000l/min: Max. 130 mbar
- Sensors: Ambient and flow pressure, temperature, humidity, filter storage temperature
Interfaces
- RS232C, USB, Ethernet, RS485
- Interface protocols: DIGITEL, Bayern-Hessen, AK, TCP/IP, HTTP, FTP
- Internal memory: 16MB, ring buffer, filter data of two years of daily sampling
Inlets
- TSP, PM10, PM2.5 and PM1, customized inlets on request
Materials
- Coated aluminium, stainless steel, POM, PTFE, NBR
- Material of sampling line: EMATAL coated aluminium
Dimensions
- Field housing: 1’385 mm* x 600 mm x 252 mm, 60 kg** class IP54
- Indoor housing: 1’300 mm x 525 mm x 250 mm, 43 kg
* Height with inlet 1923 mm
**65 kg with cooling
Sensor specifications
- Ambient & internal pressure sensor range/ accuracy (calibrated): 300 – 1100 hPa/ ± 0.12 hPa
- Ambient & internal temperature sensor range/ accuracy (calibrated): -40 – +65°C/ ± 0.5°C
- Ambient & internal humidity sensor range/ accuracy: 0 – 60°C; 0 – 100 %/ ± 3 % rH
- Filter storage temperature sensor range/ accuracy: -20 – +60°C/ ± 0.1°C
