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Density Range
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The density range the instrument can measure. Mass per volume, usually specified in kilogram per cubic meter (kg/m^3). The density of water is 1000 kg/m^3 and snow density is usually measured as a ratio to this. So snow which is 100 kg/m^3 is specified as 100/1000, or 10 percent.
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Search Logic:
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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
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A measurement of how closely the instrument can read each measurement.
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Search Logic:
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All matching products will have a value less than or equal to the specified value.
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Specific Gravity (Relative Density)
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Specific gravity is the heaviness of a substance compared to that of water, and it is expressed without units. In the metric system specific gravity is the same as in the English system. If something is 7.85 times as heavy as an equal volume of water (such as iron is) its specific gravity is 7.85. Its density is 7.85 grams per cubic centimeter, or 7.85 kilograms per liter, or 7.85 metric tons per cubic meter.
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Search Logic:
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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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Max Response Time
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The maximum amount of time it takes to make a density reading.
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Search Logic:
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All matching products will have a value less than or equal to the specified value.
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Media Type:
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Your choices are...
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Liquid
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The instrument measures the density of liquid samples.
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Gas
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The instrument measures the density of gas samples.
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Solid
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The instrument measures the density of solid samples.
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Search Logic:
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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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Density Measurement Methods:
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Your choices are...
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Oscillating Tube
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A hollow glass tube vibrates at a certain frequency. This frequency changes when the tube is filled with the sample: the higher the mass of the sample, the lower the frequency. This frequency is measured and converted into density. A built-in thermostat controls the temperature (no water bath required).
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Energy Attenuation
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Gamma energy emitted by the source passes through the pipe walls and the process material. As the density of the process material changes, so does the amount of energy reaching the detector. Electronics convert this energy reading to a density measurement.
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Microwave Phase Difference
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This exploits the way a fluid's density affects the propagation of microwaves when they pass through it. This allows the reliable measurement of the fluid's density by monitoring the difference in microwave phase between the original wave and one passed through the measured fluid. Unlike the method that depends on monitoring the attenuation of a transmitted wave, measuring fluid density by observing a wave's phase difference is unaffected by flow velocity and/or is not affected by the contamination and/or bubbles.
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Density Gradient
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Two liquids of different densities are layered in a glass tube so that over time, diffusion results in a vertical density gradient.
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Schlieren Method
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If you fill a capillary tube with liquid and hold it horizontally immersed in another liquid, the liquid will only flow horizontally from the tube if the densities of the two liquids are equal.
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Other
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Other unlisted or proprietary density measurement method.
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Search Logic:
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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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Pressure Range
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The pressure range of the sample the density instrument can operate in.
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Search Logic:
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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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Temperature Range
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The temperature range of the sample the density instrument can operate in.
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Search Logic:
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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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Maximum Material Viscosity
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The maximum viscosity of the sample the density instrument can operate in.
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Search Logic:
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All matching products will have a value less than or equal to the specified value.
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Mounting Options:
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Your choices are...
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Laboratory Style (Benchtop or Handheld)
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Typically used for laboratory purposes.
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Insertion Type
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Allows for insertion/retraction without disturbing line flow.
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In-Line
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Device can be flanged, threaded etc.
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Clamp On
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Device is clamped to outside of existing pipe.
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Other
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Other unlisted or proprietary mounting type.
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Search Logic:
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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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Local Interface:
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Has analog user inputs such as potentiometers, dials, switches, etc.
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Your choices are...
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Analog Front Panel
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Has analog user inputs such as potentiometers, dials, switches, etc.
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Digital Front Panel
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Setup or program through the front panel using digital keypad, menus, etc.
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Search Logic:
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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?
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Can be controlled or monitored remotely with a computer via interface.
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Search Logic:
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"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:
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Your choices are...
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Serial Interface
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Serial communication protocol such as RS-232, RS-485, USB.
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Parallel Interface
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Parallel communication protocol such as GPIB / IEEE-488 / HPIB Protocol.
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Other Computer Interface
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Special requirements such as modem, RF transmitter, etc.
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Search Logic:
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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?
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For control or for monitoring power density measurements.
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Search Logic:
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"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 Type:
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Your choices are...
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Analog Meter or Indicator
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Includes needle meters, LED indicators, etc.
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Digital Readouts
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Numerical or application-specific readouts.
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Video Display Terminal
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VDT styles include CRT, flat panel displays, etc.
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Search Logic:
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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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Data Storage Options?
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The instrument can store data for later use.
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Search Logic:
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"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?
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The instrument is capable of measuring temperature.
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Search Logic:
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"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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Temperature Compensated?
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The instrument is compensated for changes in temperature. General Rule: The higher the temperature, the lower the density.
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Search Logic:
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"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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Operating Temperature
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The temperature range over which the device must operate.
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Search Logic:
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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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