Analog Detectors

Part No: F14-82100

Using a simple but effective technique, the EV-P Optical Detector incorporates a chamber housing an Infra Red (IR) LED light and a photodiode light detector set at an obtuse angle preventing it from seeing the light. When smoke enters the chamber the light bounces off the smoke particles and strikes the photodiode, causing it to generate an alarm condition when a set threshold value is met. The EV-P Optical Detector is therefore more sensitive to larger smoke particles which tend to be caused by smoldering fires rather than fast flaming fires.

Part No: F14-82105

Using the scattered light principle inherent in optical detectors, the EV-DP Dual Optical Detector goes one step further and uses both IR and blue LEDs to provide a more accurate measurement of particles within the chamber. By calculating the ratio of these light sources, which operate at different wavelengths, the EV-DP can determine the particle size and thus distinguish between smoke and non-combustion products such as steam and dust. This patented, award winning technology is unique to Nittan and provides an excellent solution to false alarms in areas prone to steam and dust, including hotels, hospitals and other areas of multiple occupancy.

Part No: F14-82106

Using the scattered light principle inherent in optical detectors, the EV-DP Dual Optical Detector goes one step further and uses both IR and blue LEDs to provide a more accurate measurement of particles within the chamber. By calculating the ratio of these light sources, which operate at different wavelengths, the EV-DP can determine the particle size and thus distinguish between smoke and non-combustion products such as steam and dust. This patented, award winning sensor technology unique to Nittan, is further enhanced by the addition of a Heat sensor with Class A2R, Rate or Rise performance. This provides an excellent solution to false alarms in areas prone to steam and dust, including hotels, hospitals and other areas of multiple occupancy.

Part No: F15-82200

Unlike smoke detectors that detect the presence of smoke particles, heat detectors only react to changes in temperature. The EV-H-A1R is a Thermistor based Heat Detector, which use electronic components that change their resistance when heated; this change is detected by circuitry within the detector.

Part No: F20-82400

The EV-PH is a combined Optical Smoke and Heat Detector in one unit. This advanced Multi Sensor is able to combine the benefits of both optical and heat sensing technologies making it less prone to false alarms than individual sensing devices. An innovative Nittan designed algorithm reads both signals simultaneously and generates alarm signals from either (or both) sensor(s).

Part No: F20-82501

Benefiting from the same sophisticated detection technology as the EV-P, the EV-PS Optical Detector comes with a sounder fully integrated within the sensor itself as opposed to a separate sounder base. The EV-PS sensor drives and controls the EV-PSBCN base, with the entire platform only taking one address for maximum system efficiency. This clever design makes for quick and simple installation, saving both time and money, whilst remaining extremely competitively priced. It also makes for a more aesthetically pleasing appearance, with a lower profile for an unobtrusive appearance.

Part No: F03-83521

Universal Mounting base standardised across entire Nittan Group worldwide.

Part No: F03-83605

The EV-B-SCI is a low profile detector base with integral Short Circuit Isolator (-ve Line), suitable for use with all types of Evolution analogue addressable detectors. The base plate is designed for use in indoor locations and the cable entry is from the centre, similarly to the standard base. The EV-B-SCI is designed to provide Short Circuit Protection, without the need for any special device setting and is self resetting if the fault clears.

• Low Profile Base design
• -ve Line Isolator*
• Low quiescent current
• Self resetting when fault clears