Help with Fluorometers specifications:
Performance Specifications
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| Spectral / Wavelength Range: | Wavelength range refers to the dispersion of the grating across the linear array; also expressed as the "size" of the spectra on the array. | ||
| 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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| Accuracy: | Accuracy is the agreement between a mean measured value and a true or accepted value as quantified by error. Related to determinate errors and quantified by bias. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Resolution: | Resolution is the width of an analytical peak at half its height expressed in nanometers. It's a measure of the instruments ability to separate two overlapping peaks. At the point of resolution, two peaks of equal height are said to be resolved if you can see a dip between the tops of the two peaks. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
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| Response Time: | Response time refers to the amount of time required from introduction of the sample into the spectrometer until the analysis is complete. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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Detector Type
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| Detector Type: | Any device which quantitatively responds to a change in its environment (e.g. temperature, pressure, light intensity). | ||
| Your choices are... | |||
| Photomultiplier Tube | Photomultiplier tubes are photo-detectors with adjustable voltage, which translates optical tube (PMT) signals into electrical current. Increasing the PMT voltage increases the output signal for a given amount of light. | ||
| Photodiode | Photodiodes are semiconductor devices used to detect light and generate an electrical current. They are typically used in forward scatter (FSC) detection. | ||
| Other | Other unlisted or unspecified detector types. | ||
| 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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Monitoring
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| Monitoring: | |||
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| Continuous or Flow Through Monitoring | The fluorometer is part of a process line and continuously monitors samples. | ||
| Sample Monitoring | Samples are individually injected into the fluorometer for analysis. The fluorometer is not part of a process line. | ||
| 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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| Local Interface: | |||
| Your choices are... | |||
| Analog Front Panel | The panel has analog user inputs such as potentiometers, dials, switches, for adjustment of output, ranges, etc. | ||
| Digital Front Panel | The panel uses digital keypads or menus for programming. | ||
| 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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| Computer Interface? | The spectrometer can be controlled or monitored remotely with a computer via interface. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Computer Interface Options: | |||
| Your choices are... | |||
| Serial Interface | A port, or interface, that can be used for serial communication, in which only one bit is transferred at a time. Examples include RS232, RS422, RS485, USB, etc. | ||
| Parallel Interface | A channel capable of transferring more than one bit at a simultaneously. Examples include PC Printer Port, Centronics®, etc. | ||
| Other Computer Interface | Modem, transmitter, TTL, etc. | ||
| 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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| Application Software Included? | For control or for monitoring the process. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Display Options
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| Display Options: | |||
| Your choices are... | |||
| Analog Meter | Data is displayed with an analog meter or simple visual indicator. | ||
| Digital Readout | Digital readout devices use numerical or application specific display. | ||
| Video Display | The data is presented in video form via CRT, LCD, or other multi-line forms. | ||
| None | No integral display. Output is read and displayed remotely. | ||
| 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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General Features and Functionality
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| On-line Monitoring & Process Control? | The spectrometer is part of a system and is responsible for monitoring the process and changing it if necessary. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Shutters? | Shutters are electrical or mechanical devices used to control the amount of time the imaging surface is exposed to light. Often used to stop blur from moving objects. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Microscope? | Microscopes are used for imaging purposes. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Automatic Temperature Compensation? | The fluorometer will correct for variations in temperature during the analysis. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Also Measures Temperature? | The spectrometer has a thermistor or other temperature measuring element. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Portable | Portable spectrometers are modular devices that are designed for ease of transport and assembly. Rugged enclosures, PC interfaces, and customizable software packages are common features for the portable device. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Programmable? | The fluorometer is able to be programmed to run special routines. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Self-calibration? | Self-calibration is used to remove errors which remain after performing the regular calibration process. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Alarms? | User-defined, programmable alarm levels. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Environment
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| Operating Temperature: | This is the full required range of ambient operating temperature. | ||
| 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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