Description
The 918S-924 / 918S-924S is a float-activated adjustable sensor paired with a self-powered alarm box to monitor liquid levels at set points. The sensor installs into a 2″” female threaded opening and is adjustable within its length. The alarm box provides indication and is rated for hazardous locations per UL 913.
Features
Alarm Box
- Audible 90 dB alarm (at 4 ft) and visual indicator
- Self-powered by long-life replaceable lithium batteries
- Low battery visual indicator
- Corrosion-resistant and water-resistant polycarbonate housing
- Compliant with UL 913 intrinsic safety standards — Class I, Division 1 & 2, Group D hazardous locations
Sensor
- Four available sensor length ranges: 6″”, 12″”, 20″”, 30″”
- Fully adjustable within the selected sensor length range
- Installs into a 2″” female threaded opening; ½”” NPT fitting at top
- Normally open switch, easily convertible to normally closed operation
- Available in brass (924) or 316 stainless steel (924S) construction
Options
- Brass variant (924): Nitrophyl®-M float, brass tube, E-coated steel bushing
- Stainless steel variant (924S): 316 SS float, 304 SS tube, 304 SS bushing
- Sensor lengths: 6″”, 12″”, 20″”, 30″”
Applications
- Liquid level monitoring in aboveground storage tanks
- Overfill detection and alert in fuel storage facilities
- Hazardous location installations requiring intrinsically safe equipment
Certifications
- UL 913 — Intrinsic Safety, Class I, Division 1 & 2, Group D
- Florida DEP EQ-527 (918S)
- Florida DEP EQ-862 (924 / 924S)
