BPS402 Bag House Dust Collector Filter Monitor and Cleaning Cycle Control Panel

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BPS 402
Bag House and Dust Collector
Filter Monitor and Cleaning Cycle Control Panel

BPS 402 Product Description
Cycle Timer vs. On-Demand Cleaning
BPS 402 Specifications
Ordering Information

BPS 402 Control Panel

BPS 402

The BPS 402 is a complete system for filter monitoring and cleaning. The NEMA 4 control panel provides the excitation voltage the the BPS 400 differential pressure sensor. The control panel also displays the differential pressure in inches of water, transmits a 4-20mA signal proportional to the pressure, and provides relay outputs to initiate bag cleaning and high pressure alarms.

Cycle Timer vs. On-Demand Cleaning

Most dust collectors clean or backwash the filters at regular intervals controlled by a cycle timer. Ironically, many users have tried "on-demand" filter cleaning, based on differential pressure, only to return to cycle timers, because the pressure sensor proved to be unreliable because of clogged tubing connections. When filters are cleaned based on time intervals alone, they are cleaned whether they need to be or not; plant air is wasted and reduced filter life results in premature filter changes. Additionally, over cleaning a filter lowers its efficiency by removing the small "cake" on the filter, which helps contain the most finely divided particles.

As the filter bags or filter cartridges become dirty, the differential pressure across the tube sheet increases. If the filters are cleaned based on differential pressure, rather than a cycle timer, they will be cleaned only when necessary. On-demand cleaning saves plant air, reduces the number of cleaning cycles, thereby extending filter life, and will not "over-clean" the filter. The BPS 400 provides the reliable differential pressure measurement to make on-demand cleaning a reality.

The BPS 402 Control Panel gives the user the ability to monitor the process for upset conditions. The On-Demand filter cleaning control of the BPS 402 provides longer filter life and optimum system performance.

Specifications

Power:	120VAC, 50/60Hz.
Relay Outputs:	2 ea 10A, DPDT relays with programmable logic, set points and deadband (for cleaning cycle RUN and for high pressure alarm).
Analog Output:	4-20mA proportional to pressure.
DC Power Output:	10VDC excitation voltage to BPS 400 dP sensor.
Meter:	0.56" red LED display, 40,000 count resolution, NEMA 4 front bezel. Linearity is 0.03% full scale.
Indicator Lamps:	120VAC, NEMA 4/12.
Temperature:	0 to +50 deg C
Enclosure:	NEMA 4X fiberglass enclosue. 13-5/8"h x 10-7/8"w x 10-1/4"d.

Specifications are subject to change without notice.

Ordering Information

Part No. BPS-402 includes the NEMA 4 control panel with 115VAC supply voltage, digital LED display, intrinsically-safe barrier, 2 10A DPDT relays, "CLEANING" and "HIGH PRESSURE" indicator lamps and a 4-20mA output.

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