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System Sensor WFD40EXP Explosion Proof Waterflow Detector, 4" Pipe Size
Also known as: BK-WFD40EXP
The WFD40EXP is an explosion-proof waterflow detector for use with 4" pipe. The WFDEXP series consists of a rugged, NEMA 4-rated cast aluminum housing. Designed for both indoor and outdoor use, the WFDEXP series operates across a wide temperature range, from 32F to 160F. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a rugged terminal block to assure reliable performance.
The WFDEXP series offers unique features that assure greater operational reliability. By housing the spring mechanism separately from the explosion environment, the sensitivity of the adjustment spring and the detector is protected at all times. Adding to WFDEXPs reliability is its sealed retard mechanism, which prevents contamination by dust and dirt when the cover is removed.
Like all System Sensor waterflow detectors, the WFDEXP series is designed for easy installation. With its visible switch activation, the WFDEXPs retard timing can be verified, even during noisy conditions. |
Features:
- Designed and approved to operate in hazardous locations
- NEMA 4 enclosure rating
- Sensitivity-setting spring mechanism located outside of explosion environment
- Sealed retard mechanism
- Visual switch activation
- Synchronized activation circuit
- Field-replaceable terminal block and retard mechanism
- Only one conduit entrance required for hook-up
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Technical Specifications:
- Conduit Entrances: Two openings for 1/2" conduit
- Contact Ratings: Two sets of SPDT (Form C); 10.0A @ 125/250VAC; 2.5A @ 24VDC
- Enclosure Rating: UL NEMA 4
- Hazardous Location Classifications: Class I, Div 1, Groups B, C, D; Class II, Div 1, Groups E,F,G; Class III, Div 1
- Maximum Surge: 18 FPS
- Operating Temperature Range: 32F to 120F (0 to 49C)
- Overall Dimensions: 6"H x 9"L x 6.5"W
- Pipe Schedule: 10 through 40
- Pipe Size: 4"
- Shipping Weight: 11.5 lbs.
- Triggering Threshold Bandwidth Flow Rate: 4-10 GPM
- UL Pressure Rating: 450 PSI
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UPC: 783863014239
Average rating: 5.0, based on
1 review
For more information about the System Sensor WFD40EXP, please contact us.
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