Durag D-R 820 F Extractive Scattered Light Dust Monitor

The DURAG D-R 820 F is an extractive dust monitor for wet flue or process gases to monitor low to medium dust concentrations.

Key Benefits

measurements	scattered light value, allows calibration as dust concentration in mg/m3
sample gas	air, flue gas, non flammable process gas
dust concentration** (typical values at the site)	1 – 15 / 2 – 50 / 5 – 100 / 10 – 200 mg/m3
flow speed	1 – 35 m/s
duct diameter	> 0,4 m
sample gas temperature	-25 to 220°C
sample gas pressure	-30 to +2 hPa, others on request
sample gas moisture	> 100 % relative humidity, max. 30g/m3 H2O as aerosol
ambient temperature	-20 to +50°C, others on request
conformity	2000/76/EG WID / 17. BImschV 2001/80/EG LCPD / 13. BImschV
Measuring principle	extraction of sample gas, dilution and heating to vaporize H2O aerosols. Consequent measurement of light intensity being scattered in forward direction by dust particles
light source	laser diode, red 650 nm
type	in situ, mounted at stack, probe in contact with sample gas
system components	D-R 820F P probe incl. extractive system D-R 820F blower unit D-R 820F SU Supply, control and display unit
measuring range	can be parametrized
expanded uncertanty acc. to EN 14181 / EN ISO 14956 / EN 15267-3	better than 1,5 mg/m3 at particle size 1-2mü
output range	scaling of scattered light values in mg/m3, assigned to analog output, range switching to 2nd range as option (ratio 1:3), display of measured values in mg/m3
process connection	flange similar to DN80, PN6, pitch circle 150mm, tube ID = 100mm

D-R 820F P PROBE WITH EXTRACTIVE SYSTEM
power supply	200-264 VAC, 1.500 VA, 24 VDC, from D-R 820F SU, others on request
protection	IP 55
dimensions (h x w x d)	1.050 x 600 x 1.500 mm (1.000 mm immersion depth)
material	housing: FRPl probe: 1.4517, hastelloy 2.4610*
weight	ca. 45 kg
D-R 820F SU SUPPLY AND DISPLAY UNIT
output signal	4 – 20 mA / 500 Ohm
status output	4 x relay, max. load 35V 0,4A
status input	1 x dry contact, purge
power supply	230 / 400 V, 50Hz 3L, N, PE, 3 x 16A, 3.500 VA supplies D-R 820F P and D-R 820F Blower, others on request
protection	IP 55
dimensions (h x w x d)	400 x 600 (1.200*) x 410 mm * width if cabinet is open
material	sheet steel, painted RAL 7035
weight	ca. 20 kg
D-R 820F BLOWER UNIT
power supply	2 x 230/400 V 50 Hz, 3L, PE, from D-R 820F SU others on request
protection	IP 65
dimensions (h x w x d)	600 x 800 x 400 mm
weight	ca. 40 kg
Bemerkung	* variants ** the suitability of the D-R 820F for the listed ranges depends on the kind of dust and the size distribution Subject to technical modifications!