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Babbitt - Model FS10000 -Dust Emissions Flow Switch
The FS10000 is designed to detect the flow of dust, granular or powered materials in a pneumatic conveying line or chute. This flow switch is espacecially suited to detect the flow of dust resulting from a ruptured filter bag in a bag house or dust collector.
The FS10000 can detect dust collector emissions before they become visible. When particles collide with the sensing probe, a small electrical charge is transferred to the probe and sensed via the FS10000`s proprietary circuitry. This charge transfer is called the triboelectric effect, or "frictional electricity". The FS10000`s output is via an on-board relay, which can be used to sound an alarm or perform other control functions.
The FS10000 is designed for applications where the velocity is 1800 feet per minute or greater. To calculate velocity when you know the CFM, use the formula below.
All necessary calibration indicators are on the remote mounted electronics, so all you need to calibrate the FS10000 is a small screwdriver. Calibration is performed under a no-flow condition. Each unit has a field adjustable time delay that may be used to ignore nuisance indications or intermittent gaps in product feed.
The FS10000 comes complete with the electronic circuit board mounted in a NEMA 4X enclosure, 15 feet of low noise coaxial cable and connectors, and a 316 stainless steel probe mounted in an explosion-proof enclosure.
An optional Shield Screen is available for the probe. The Shield Screen is designed to shield the probe from unwanted electrical noise in the duct that may be caused by nearby fans or motors. It can also shield the probe from stray static electrical charges created in non-metallic ducts. The Shield Screen bleeds the electrical noise to ground before it reaches the probe, while allowing the dust in the air stream to collide with the sensing probe.
- Solid state, no moving parts
- Simple installation and calibration
- No optics or lenses to clean or align
- NEMA 4X enclosure for electronics
- Optional NEMA 7 or 9 enclosure
- Explosion-proof housing at probe
- Field adjustable time delay
- Detect torn filters in dust collectors
- Fabric or cartridge filter sensing
ELECTRICAL:
- Power: 115VAC/230 VAC (+/-15%) 50/60Hz
- Output: 2 Form C Contacts, DPDT Relay, 5 Amp resistive @ 125, 250 VAC; 30VDC
- Time Delay: Selectable ON or OFF Delay Adjustable 1/8 second to 2 Hours
- Fuse: On-board 1/2 Amp
MECHANICAL:
- Process Entry: ¾” NPT
- Conduit Entry: ¾”NPT
- Probe: ½” Diameter 316 Stainless Steel 1 1/2”, 3” and 6” standard (Coated probes Optional)
- Insulator: Ultra High Molecular Weight Polyethylene
- Enclosure: Probe: Copper free cast aluminum
- Electronics: Non-metallic 10”x8”x5” with clear acrylic window
ENVIRONMENTAL:
- Temperature: Electronics: -30F to 170F
- Probe: -30F to 200F Standard (400F Optional)
- Pressure: 85 PSI
- Hazardous Area: Housing is CSA and UL approved for Class I, Div. 1, Groups C & D; Class II, Groups E, F & G; Class III NEMA 4
- Enclosure Electronics: NEMA 4, 12, 13