Certification Pending

Your dependable, low cost, low maintenance, 24-hour watchman

Designed for use in industrial freezers, coolers, production areas, engine rooms, and dock areas.

Early warning to your employees. Quick response to leaks even during off-production hours.

Solid state circuitry. No radioactive elements. All components U.L.

Versatile in its applications. Automatically start up or shut off selected auxiliary equipment during plant emergency.

Saves money. A 5 to 15% reduction in annual insurance premiums as well as additional insurance coverage are possible.

Meets OSHA requirements.

Specifications

Ammonia detection sensitivity: 25 to 800 ppm
Ammonia sensor: Metal oxide semiconductor. 833 mW integral heater. Alumina ceramic base. 100 mesh SUS 316 double gauge. Flame arrestor.
Relays: Alarm, pre-alarm, and auxiliary (auxiliary relay operates at same time as alarm relay). 5A, form C (SPDT), normally-open, normally-closed, de-energized in normally-open state.
Outputs: Contacts for: alarm, pre-alarm, and auxiliary relays. Conforms to S50.01 ratings, Type 2L and Type 2H.
Operating temperature: -50°F to 125°F
Operating humidity: 5% to 95% RH, noncondensing
Power requirements: 115 or 230 VAC, 50/60 Hz, or 16 VAC, or 24 VDC.
Dimensions: 7-1⁄2"H x 7-1⁄2"W x 4-1⁄2"D
Weight: 4 lbs.
Enclosure: NEMA 4X rated, UL listed, CSA, IEC, IP66
Options:
– Back-up battery
– Remote ammonia sensor with cable up to 500'
– Remote alarm-horn assembly
– Stainless-steel washdown tube

Suggested Specifications Text

Ammonia (NH3) vapor detection system

Provide ammonia leak detector(s), model LBW-50, as manufactured by Cool Air Incorporated, St. Paul, Minnesota.

Ammonia leak detector(s) shall be wall-mounted and have a solid-state instrument panel and sensor capable of sensing ammonia refrigerant concentrations of 25 to 800 parts per million. A field adjustable range beginning at 30 parts per million.

Detector(s) shall not contain radioactive substances.

Detector(s) shall also have: an early warning alarm system, front-panel LED indication providing ammonia concentration and contacts for operating auxiliary equipment.

Detector(s) shall be capable of initiating a supervised alarm, resulting in corrective action.

Optional back-up battery, remote ammonia sensor, remote alarm light & horn unit, and stainless-steel washdown tube shall be available from the detector manufacturer.

115/230 VAC, 50/60 Hz, or 14-24 VAC/VDC shall be provided for each detector.