Dust emissions monitors, broken bag detectors and differential pressure transmitters allow users to better optimize bag house performance, increase efficiency, lower operating cost and/or comply with EPA regulations.
The Babbitt FS10000 is a basic dust emissions flow switch, specifically designed to detect the flow of dust resulting from a ruptured filter bag in a bag house or dust collector. The PM 1 and PM 1 PRO Series are particulate monitors and broken bag/leak detectors. These units provide a 4/20mA output as well as optional relay contacts for alarms, which allow the user to continually monitor baseline and peak emission levels. The DP20T –Differential Pressure Transmitter- continually monitors the difference in pressure between the clean and dirty side of the bag house. This allows the filter bags to be cleaned only when needed, as opposed to regularly set intervals. As a result, the life of the filter bag can be greatly extended, leading to huge cost savings over time.
Frequently Asked Questions
What do dust emission monitors and broken bag detectors do? +
These instruments help users optimize bag house performance, increase efficiency, lower operating costs, and comply with EPA regulations. Babbitt offers three types: the FS10000 flow switch, the PM 1 and PM 1 PRO particulate monitors, and the DP20T differential pressure transmitter.
What is the FS10000 and how does it work? +
The FS10000 is a basic dust emissions flow switch designed to detect dust from a ruptured filter bag before it becomes visible. It uses the triboelectric effect: when particles collide with the sensing probe, a small electrical charge transfers to the probe and is sensed via the unit's circuitry. Output is through an on-board relay that can trigger an alarm or other control function. It's designed for applications with velocities of 1,800 feet per minute or greater.
What's the difference between the PM 1 and PM 1 PRO? +
The PM 1 is a basic particulate monitor and leak/flow detector using charge induction sensing, available as the PM 1-A (alarm relay output) or PM 1-T (4/20mA transmitter), with integral electronics only.
The PM 1 PRO is built for more demanding process conditions and EPA compliance. It's the first loop-powered particulate monitor with EPA-certifiable self-tests, meeting ASTM D7392 and EN 15859 standards, with HART, USB, and data logging support. It's available in PRO-A, PRO-AT, and PRO-T versions with integral or remote electronics and a graphical display and keypad, and handles a much wider process temperature and pressure range than the standard PM 1.
What is the DP20T and what does it measure? +
The DP20T is a heavy duty, maintenance free differential pressure transmitter built for fabric filters, cyclones, powder processes, and low pressure particulate-laden pipes. Its flush/ported design allows it to be configured for differential or static measurement, and it transmits accurate readings below 10 inches W.C. across a broad temperature range without clogging, making it a strong replacement for mechanical or helical devices.
How do these instruments help with EPA compliance? +
The PM 1 PRO offers EPA-certifiable self-tests and meets ASTM D7392 and EN 15859 performance and design standards. The DP20T records differential pressure data across the bag house, which supports EPA recordkeeping and regulatory requirements around filter monitoring.
Can these instruments help extend filter bag life? +
Yes. The DP20T continually monitors the pressure difference between the clean and dirty sides of the bag house, so filter bags can be cleaned only when needed rather than on a fixed schedule. This can greatly extend filter bag life and produce significant cost savings over time, and pairing the DP20T with a dust emission monitor further optimizes filter cake and filtration efficiency.
Are these instruments rated for hazardous locations? +
The FS10000 has an explosion-proof probe enclosure rated Class I, Groups C and D, and Class II, Groups E, F, and G. The PM 1 PRO is rated Class I, Div. I, with explosion-proof options available. The DP20T offers intrinsically safe and explosion-proof versions on request, along with a 3A sanitary rating for food and pharmaceutical applications.
What output signals do these instruments provide? +
The FS10000 provides relay outputs (2 Form C contacts) for alarm or control functions rather than an analog signal. The PM 1 and PM 1 PRO offer an isolated 4/20mA output on the transmitter models and discrete alarm relay outputs on the monitor models. The DP20T provides a standard 4-20mA output for connection to a PLC, DCS, PC, or chart recorder.
