Mircom MIR-65 Series Conventional Smoke and Heat Detectors
Description
The MIR-65 Series incorporate proven sensing technologies, together with advances in materials and electronics technology. Having a wide operating voltage of 9-33VDC, the MIR-65 Series detectors can be integrated into most Fire/Security systems. The MIR-65 Series wide voltage range family consists of photoelectric smoke, ionization smoke, and heat detectors.
Ionization Smoke Detector Head (MID-65I)
The sensing part of the ionization detector consists of two chambers – an open outer chamber with a second semi-sealed reference chamber within. Mounted in the reference chamber is a low activity radioactive foil of Americium 241 which enables current to fl ow between the inner and outer chambers when the detector is powered up. As smoke enters the detector, it causes a reduction of the current fl ow in the outer chamber and, hence, an increase in voltage measured at the junction between the two chambers. The voltage increase is monitored by the electronic circuitry which triggers the detector into alarm state at a preset threshold. A highly visible external red LED fl ashes when the detector is in operational standby and changes to steady in alarm state.
Photoelectric Smoke Detector Head (MPD-65P)
The photoelectric detector incorporates a pulsing infra-red LED located in a chamber within the housing of the detector. The chamber is designed to exclude light from any external source. At an angle to the LED is a photo-diode which normally does not register the column of light emitted by the LED. In the event of smoke from a fi re entering the chamber, the light pulse from the LED will be refracted into and registered by the photo-diode. If the photo-diode “sees” smoke on the two following pulses (alarm confi rmation), the detector changes into the alarm state. A highly visible external clear LED fl ashes red when the detector is in operational standby and changes to steady red in alarm state. The clear LED allows for easy fl oor level detector type identifi cation.
Features
- Wide operating voltage range
- Advanced electronics technology
- Flashing standby/steady alarm LED
- Magnetic test switch
- Low profi le (1 5/8”H x 4”Dia.)
- Can be used on security systems
- Locking feature reduces tampering
- Designed to meet approvals worldwide
- Large range of bases available
- Separate head/base design allows interchangeability and ease of installation
- High RF, noise and insect immunity
- Available in 2 and 4 Wire Kits
Fixed and Rate-of-Rise Heat Detector Head (MHD-65-135/MHD-65-200)
The heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. In normal conditions the two thermistors register similar temperatures; but, on the development of a fi re, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance that causes the detector to change into the alarm state. Rate-of-rise detectors are designed to detect a fi re as the temperature increases, but they also have a fi xed upper limit at which the detector will go into alarm if the rate of temperature increase has been too slow to trigger the detector earlier. A highly visible external red LED fl ashes when the detector is in operational standby and changes to steady in alarm state.
MIR-65 Series Bases
All MIR-65 Series bases have a “one-way-only” fi t. The detectors are polarity sensitive and the bases are easy to wire. All bases have an earth ground connection and accept the provided standard head locking screw. MIR-65 Series relay bases are for use with control units having resetable 4-wire detector power supply and alarm initiating circuits. Where local codes allow, they may also be used in 4-wire circuits to provide volt-free control signals to auxiliary systems such as automatic door closers.
Specifications
| Features | Flashing Red LED in Standby / Magnetic Test Switch | |
| Supply Voltage | 9 to 33VDC | |
| Average Current | ||
| Standby | 24VDC | 55μA |
| (Without accessories) | 9VDC | 50μA |
| Alarm | 24VDC | 52mA |
| (Without accessories) | 9VDC | 17mA |
| Alarm Indication | Steady On Red LED | |
| Ambient Temperature | -4°F to 140°F (-20°C to 60°C) (No Condensation or Icing) | |
| Nominal Sensitivity | 1.2%/ft. | |
| Max. Wind Continuous | 32ft./sec. | |
| Radioactive Element | Americium 241; 0.9 Micro- Curie. Do Not Expose to Corrosive Atmospheres | |
MPD-65P Photoelectric Smoke Detector
| Features | Red Flashing Clear LED in Standby / Magnetic Test Switch | |
| Supply Voltage | 9 to 33VDC | |
| Average Current | ||
| Standby | 24VDC | 45μA |
| (Without accessories) | 9VDC | 40μA |
| Alarm | 24VDC | 52mA |
| (Without accessories) | 9VDC | 17mA |
| Alarm Indication | Steady on Red LED | |
| Ambient Temperature | -4°F to 140°F (-20°C to 60°C) (No Condensation or Icing) | |
| Nominal Sensitivity | 2.5%/ft. | |
| Max Wind Continuous | Not Affected | |
MHD-65-135/MHD-65-200 Fixed
| Features | Flashing Red LED in Standby / Magnetic Test Switch | ||
| Supply Voltage | 9 to 33VDC | ||
| Average Current | |||
| Standby | 24VDC | 55μA | |
| (Without accessories) | 9VDC | 50μA | |
| Alarm | 24VDC | 52mA | |
| (Without accessories) | 9VDC | 17mA | |
| Alarm Indication | Steady on Red LED | ||
| Ambient Temperature | -4°F to 195°F (-20°C to 90°C) (No Condensation or Icing) | ||
| Max Wind Continuous | Not Affected | ||
4-Wire Standard/Auxiliary Relay Bases (MSB-65B-4/MSB-65B-4R)
| Supply Voltage | *9 to 33VDC |
| Ambient Temperature (No Condensation or Icing) | 4°F to 158°F (-20°C to 70°C) |
| Max. Switching Power | 30W, 50VA |
| Max. Switching Current | 1A (Resistive Load) |
| Max. Switching Voltage | 50VAC, 75VDC |
| Min. Capability | 10μA, 10mVDC |
| Dropout Voltage | <6V |
Ordering Information
| Model | Description |
| MID-65I | MIR-65 Series Ionization Smoke Detector Head |
| MPD-65P | MIR-65 Series Photoelectric Smoke Detector Head |
| MHD-65-135 | MIR-65 Series Fixed Temperature and Rate-of-Rise Heat Detector Head 135°F (57°C) |
| MHD-65-200 | MIR-65 Series Fixed Temperature and Rate-of-Rise Heat Detector Head 200°F (190°C) |
| MSB-65B | MIR-65 Series 2-Wire E-Z Fit Base |
| MSB-65B-4 | MIR-65 Series 4-Wire Standard Relay Base c/w Low Profile Skirt and Spanner Bar |
| MSB-65B-4R | MIR-65 Series 4-Wire Auxiliary Relay Base c/w Low Profile Skirt and Spanner Bar |
| MIR-65 Series Smoke Detector Kits | |
| MPD-65PK | MIR-65 Series Photoelectric Detector Kit c/w Photoelectric Detector Head and 2-Wire E-Z Fit Base |
| MID-65IK | MIR-65 Series Ionization Detector Kit c/w Ionization Detector Head and 2-Wire E-Z Fit Base |
| MPD-65PK-4 | MIR-65 Series Photoelectric Detector Kit c/w Photo Detector Head and 4-Wire Standard Relay Base |
| MPD-65PK-4R | MIR-65 Series Photoelectric Detector Kit c/w Photo Detector Head and 4-Wire Auxiliary Relay Base |
Canada
25 Interchange Way Vaughan, Ontario L4K 5W3 Telephone: (905) 660-4655 Fax: (905) 660-4113
U.S.A.
4575 Witmer Industrial Estates Niagara Falls, NY 14305 Toll Free: (888) 660-4655 Fax Toll Free: (888) 660-4113
Web page: http://www.mircom.com
Email: [email protected]
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