Part Five – Technical Information

Product Specifications

Power: 120V AC units: 60 Hz, Current 120 mA max.

Sensor: CO sensor calibrated at 150 ppm (±25 ppm).

Gas sensor calibrated to alarm before 25% of the LEL.

Temperature:

Operating range: 40˚F (4.4˚C) to 100˚F (37.8˚C).

Mounting: Accessories supplied for wall mount or direct plug applications.

Alarm: 85+ dB at 10’ @ 3.4 ± 0.5 KHz pulsing alarm.

LED Operation:

Blinking dot on display denotes normal operation. Digital readout 30-999.

In alarm condition for CO you will hear 4 quick beeps, 5 seconds off, repeating for CO.

In alarm condition for GAS you will hear a 1/2 second beep, 1/2 second silence, repeating for GAS.

Battery Backup:

A 9V battery is needed. If battery is low or

missing while the unit is plugged into a 120V outlet, an “Lb” message will display which will blink alternately with a the CO reading every second and the sounder will chirp every 15 seconds.

Unit Malfunction:

“Err” error message will display. Intermittent alarm will sound every 30 seconds.

Refer to pages 1-6, 6-3 and 6-4 for other error conditions.

Test/Reset Button:

Test button verifies proper unit operation and resets the unit in the event of a CO and Gas alarm.

Peak Level Memory Button:

When pressed, LED will display the highest CO ppm level detected since unit was powered up or since unit was reset with test button. Reading will be stored in memory as long as unit is not reset or unplugged. Any CO concentration detected from 11-999 will be displayed

Size: 6”L x 3.75”W x 1.8”H. Wt. 1 lb.

Warranty: Five-year warranty from date of purchase against defects in material and workmanship.

How the Unit Determines When to Alarm

Your Nighthawk alarm uses advanced technology to monitor the environment in your home and warn you of unacceptable levels of carbon monoxide or Gas. An internal microcomputer works togeth- er with the sensors inside the alarm to determine the levels of carbon monoxide or Gas in the air. The microcomputer is calibrated to trig- ger the unit’s alarm before most people would experience any symp- toms of carbon monoxide poisoning or in the case of natural Gas or propane, the alarm will trigger before 25% of the lower explosion limit (LEL). Because carbon monoxide is a cumulative poison, long- term exposures to low levels can cause symptoms, as well as short- term exposures to high levels. Your Nighthawk unit has a time weighted alarm, so the higher the level of carbon monoxide pre- sent, the sooner the alarm will be triggered.

This Nighthawk alarm meets the alarm response time

requirements of UL Standard 2034 which are as follows for CO:

At 70 ppm, the unit must alarm within 60-240 minutes. At 150 ppm, the unit must alarm within 10-50 minutes. At 400 ppm, the unit must alarm within 4-15 minutes.

This Nighthawk alarm meets the alarm response time

requirements of UL Standard 1484 which are as follows for Gas:

This unit shall alarm before 25% of the LEL of either natural Gas or propane is detected. In all cases, the unit will detect carbon monoxide as a priority over Gas. If the device is detecting Gas, then detects an amount of CO to cause an alarm, the device will stop alarming for Gas and alarm for CO.

WARNING: This product is intended for use in ordinary indoor loca- tions of family living units. It is not designed to measure compliance with Occupational Safety and Health Administration (OSHA) commer- cial or industrial standards. Individuals with medical problems may consider using warning devices which provide audible and visual sig- nals for carbon monoxide concentrations under 30 ppm.

Accuracy of the Digital Display

Each Nighthawk CO and Gas alarm is calibrated at a CO concentration of 150 ppm in air, at 80˚ F (+/- 10˚ F) and 40% (+/- 3%) relative humid- ity. Depending on the ambient condition (temperature, humidity) and the condition of the sensor, the alarm readings may vary. Under the same ambient conditions the device will alarm for Gas before 25% of the LEL is reached.

The digital reading tolerances are:

Ambient: 80˚ F (+/- 10˚ F), atmospheric pressure +/- 10%, 40% +/- 3% relative humidity.

 

Tolerance

Reading

(of displayed reading)

0-999 ppm

+/-20% +15 ppm

5-1

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Nighthawk KN-COEG-3 manual Part Five Technical Information
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KN-COEG-3 specifications

The Nighthawk KN-COEG-3 is a state-of-the-art carbon monoxide and explosive gas detector designed to offer paramount safety for homes and workplaces. With its sleek design and advanced technology, this device stands out in the market for its reliability and ease of use. One of the most striking features of the KN-COEG-3 is its dual-function capability, allowing it to detect both carbon monoxide (CO) emitted from sources like gas appliances and vehicles and explosive gases such as natural gas and propane. This dual detection provides an added layer of safety, ensuring that you are alerted to potential dangers in real time.

The device is equipped with a highly sensitive electrochemical sensor for carbon monoxide detection, which offers precise readings and minimizes false alarms. The explosive gas sensor utilizes a catalytic bead technology, which allows for quick identification of dangerous gas leaks. Together, these technologies ensure that you are protected from two of the most serious gas-related hazards.

Another key feature of the Nighthawk KN-COEG-3 is its user-friendly interface. The device includes a well-designed LCD display that provides clear, easy-to-read information regarding the levels of carbon monoxide and explosive gases detected in the air. It also features a loud alarm system that activates immediately upon detection of dangerous levels, ensuring that occupants can promptly respond to evacuation protocols.

The KN-COEG-3 boasts a compact and stylish design, making it easy to install in various locations, whether mounted on a wall or placed on a countertop. It is powered by an AC adapter with a battery backup, which guarantees continuous operation even in the event of a power outage. This reliability ensures peace of mind for users, whether they are at home or away.

Additionally, the device incorporates advanced self-test features that allow it to periodically check its sensor and system functionality, assuring users of its operational integrity. By coupling advanced technology with a commitment to user safety, the Nighthawk KN-COEG-3 presents a compelling solution for anyone looking to enhance their safety against carbon monoxide and explosive gas hazards in their environment.
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