Help with Flame Detectors specifications:
Device Classification
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| Your choices are... | |||
| Sensor | The device is a sensor / transducer. Its output is meant for processor, controller or data acquisition system. No display or user interface. | ||
| Sensor System | Device is an instrument, it has display and/or user interfaces. It can be a self-contained unit. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Detector Characteristics
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| Maximum Response Time: | Maximum time between actuation of the sensing function and the output signal. Determined as the response time to a pan fire at a predetermined distance, usually 50 feet. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Maximum Detector Range (Sensitivity): | Maximum distance from a pan fire. This is the maximum distance between the detector and a standard gasoline pan fire that results in positive detection. It is a measure of detector sensitivity. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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Sensor Technology
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| Sensor Technology | |||
| Your choices are... | |||
| UV Detector Only | Ultraviolet Spectral Band Detection Only. Detects wavelengths shorter than 300 nm (solar blind spectral band). Detects flames at high speed (3-4 milliseconds) due to the UV high-energy radiation emitted by fires and explosions at the instant of their ignition. Subject to interference (false alarms) from random UV sources such as lightning, arc welding, radiation, and solar radiation. | ||
| IR Detector Only | Infrared Spectral Band Detection Only. The mass of hot gases emits a specific spectral pattern in the infrared spectral region. Subject to interference (false alarms) by any other “hot” surface in the area. | ||
| UV / IR Detector | UV and IR spectral band detector. Compares the threshold signal in two spectral ranges and their ratio to each other to confirm the reliability of the fire signal. Minimizes false alarms. | ||
| Multi-IR Detector | Multi-IR detectors can be dual IR (IR/IR) or triple IR (IR/IR/IR). Dual IR band spectral band detector. Compares the threshold signal in two spectral ranges and their ratio to each other to confirm the reliability of the fire signal. Minimizes false alarms. Triple IR spectral band detector. Three specific wavelength bands with the IR spectral region are compared. Mathematical techniques are used to correlate the three bands to discriminate between fire and false alarm. | ||
| Other | Other unlisted or proprietary technology type. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Output Options
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| Output Options | |||
| Your choices are... | |||
| Analog Voltage | Any analog voltage output. Output voltage is a simple (usually linear) function of the measurement. | ||
| Analog Current | Often called a transmitter. A current is imposed on the output circuit proportional to the measurement. Feedback is used to provide the appropriate current regardless of line noise, impedance, etc. Useful when sending signals over long distances. | ||
| Frequency / Modulated Frequency | Frequency or modulated frequency output (Ex. sine wave, pulse train, AM, FM). A format that uses continuous physical variables such as voltage amplitude or frequency variations to transmit information. | ||
| Switch or Alarm | The output is a switch or alarm. | ||
| Other | Other unlisted output option. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Communication Interface Options
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| Communication Interface Options | |||
| Your choices are... | |||
| Serial | Outputs a serial digital signal (e.g., RS232, USB, RS422) | ||
| Parallel | Outputs a parallel digital signal (i.e., GPIB, PC parallel printer port) | ||
| Other | Outputs a digital signal other than parallel or serial (i.e., special TTL) | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Display Options
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| Display Options | |||
| Your choices are... | |||
| Non-electrical Visual / Audio Output | The output of the detector is a non-electrical visual or audio signal. | ||
| Analog Display | Has an analog meter or simple visual indicator. | ||
| Digital Readouts | Numerical or application specific readouts | ||
| Video Display Terminal | Generic video display terminal, e.g. CRT, flat panel displays, etc. | ||
| Other | Other unlisted display option. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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User Interface Options
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| User Interface Options | |||
| Your choices are... | |||
| Analog Front Panel | Has analog user inputs such as potentiometers, dials, switches etc. | ||
| Digital Front Panel | Setup or program through the front panel using digital keypad & displays, menus etc. | ||
| Computer | Can be controlled remotely with a computer via interface. | ||
| Other | Other unlisted interface option. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Features
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| Features | |||
| Your choices are... | |||
| Adjustable Time Delay | A programmable time delay between detection and alarm. | ||
| Automatic Self-test | Performs automatic verification of internal circuitry, lens cleanliness and sensor operation. | ||
| Explosion Proof | The detector electronics are housed in an explosion proof enclosure. | ||
| NEMA 4 Rated Enclosure | Watertight housing suitable for outside use. | ||
| Cooling Air Required | Cooling air supply to the detector is required in some flame detector applications. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Environment
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| Operating Temperature: | The temperature range over which the device must operate. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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