DX800 and DX810 - Advanced Design Electrodynamic Particulate Monitoring for Hazardous Gas and Dust Zones
 
 
 
 
 
 
* Certified for EX (ATEX) Gas Zones 0, 1 and 2 and Dust Zones 20, 21 and 22
* Intrinsically safe dust sensor with separate advanced user interface unit
* Certification rating: EXII 1 G EEX ia IIC T4, EX II 1 D(T71degreesC)
* High Temperature and Pressure Sensor option (DX810) for chemical reactor applications (shown above)
* Galvanic isolation design assists cost-effective installation in Hazardous Areas
 
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The DX800 and DX810 are intrinsically safe certified particulate emission monitors suitable for EX gas zones. The instruments are certified as Category 1 devices by the Notified Body, SIRA, UK according to teh ATEX Directive (94/9EC). As such, they are suitable for use in both hazardous Gas Zones 0, 1 and 2 and hazardous Dust Zones 20, 21 and 22.

The sensor electronics are certified intrinsically safe(ie: safe under two fault conditions) and are, therefore, suitable for installation directly in the hazardous gas and dust zone. The control unit is located in the safe area and is connected to the sensor via barrier unit which is mounted on the output from the control unit. The system uses galvanic isolation, meaning that no independent, intrinsically safe earth is require. 'Earth strap' connection is required between the sensor body and the stack as part of the system safety (see manual for full details).
 
 
 		 
 
 
The DX800 and DX810 use unique AC Electrodynamic technology. The DC signal created by particles colliding with a probe inserted in a stack is electronically filtered out, leaving an AC signal resulting from charged particles passing and interacting with the rod. Since the signal includes no DC component, the instrument has minimal cross sensitivity to changing velocity (application dependent) and has increased stability even with dust build up on the rod sensor. The dust signal is amplified, digitised and processed at the probe, consistent with good signal to noise design techniques. The processed signal is proportional to dust concentration, although the exact correlation is application dependent.
 
 
 
 
The DX800 and DX810 can be used for particulate emission monitoring in a wide range of application in the Chemical Processing, Steel and Food Industries where Hazardous area certification is required. The instruments are typically used after arrestment plant such as Bagfilters and Cyclones to monitor emissions, quantify particulate loadings in mg/m3 and/or detect process upsets. The DX810 is rated for use in temperatures up to 425C and pressures 5MN/m2 (50 bar) and 800C at lower pressures, making it suitable for use in reactors and other polymerisation plants.
 
 
Product
Max
Temperature C
Max
Pressure
DX800
DX810
 
250C
425C
800C
200 KN/m2 (2 BAR)
5 MN/m2 (50 BAR)
1 MN/m2 (10 BAR)
 
 
 
 
PCME-US is a division of B3 Systems, Inc.
B3 Systems, Inc. is an independent distributor of PCME, Ltd. products.
 
 
7711 Welborn Street
Suite 106
Raleigh, NC  27615
 
Phone 919-790-9090
Fax 919-790-0550
 

© 2004 B3 Systems, Inc.