Flame Photometers Specifications

Help with Flame Photometers specifications:

Performance Specifications

	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.
	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.
	Number of Channels:		The number of selection of wavelengths the spectrometer can accommodate.
	Search Logic:		All matching products will have a value greater than or equal to the specified value.

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Optical System

	Optical System:
	Your choices are...
	Monochromator		A monochromator is a spectrometer optical system capable of measuring a single wavelength, which can be scanned through a wide wavelength range. A common form of monochromator is the Czerny-Turner design, consisting of fixed entrance and exit slits, fixed focusing mirrors and a rotatable diffraction grating. As the grating rotates, a different wavelength is focused onto the exit slit. The wavelength range of a monochromator varies with the choice of grating, but commonly they can scan from 160 nm to 500 nm or ever wider ranges. The spectral resolution depends on the widths of the slits, the choice of grating and focal length, but commonly can be less than 10 pm for high resolution OES.
	Polychromator		A common spectrometer optical system consists of a polychromator, which scatters the spectrum and isolates the analytical lines of the elements to be analyzed. A Paschen Runge-type polychromator consists of an entrance slit, a concave grating, and exit slits. The slits and the center of the grating are located on a circle, known as the Rowland circle. The radius of the Rowland circle equals the focal length of the grating. The grating is curved at twice the radius of the Rowland circle so that the light from the entrance slit is focused onto the exit slits.
	Other		Other unlisted or proprietary optical systems.
	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 Type

	Detector Type:		The part of the instrument that converts radiant energy from the light source to electricity. Typically a photomultiplier tube, but may also be a solid-state detector in more modern instrumentation.
	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.
	Solid State (CCD)		Solid state detectors pass charges from one capacitor to another by changing applied voltage in a coordinated fashion. The photon strikes silicon and is converted to a charge that can be transported and measured by electronic structure built on monolithic Silicon chip. There are two types of optical solid state detectors: Charge Coupled Device (CCD) and Charge Injection Device (CID).
	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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Special Features

	Sample Ablation?		Allows for solid sample analysis without dissolution.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Wavelength Stabilization?		For many applications it is important to stabilize the oscillation of the wavelength.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Mass Spectroscopy Option?		The ICP can be coupled with a mass spectrometer. The fundamental difference between ICP-OES and ICP-MS is that the plasma is not used to generate photons of light, but to generate trace metal ions. The ions produced in the plasma are transported and separated by their atomic mass to charge ratio using a mass spectrometer. The generation of such large numbers of positively charged ions allows ICP-MS to achieve detection limits at the part-per-trillion level.
	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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User Interface Options

	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.
	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.
	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.
	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

	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

	Data Storage / Data Logger?		Is it necessary for the device to be able to record and store data within its own memory, without transferring it to a separate data recorder?
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Programmable?		The photometer can 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.
	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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