Dissolved CO2 Instruments Specifications

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Dissolved CO2 Instruments Specifications

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Dissolved Carbon Dioxide Measurement


	Dissolved CO₂ Range		The dissolved carbon dioxide measurement range in parts per million.
	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.

	Accuracy		The dissolved carbon dioxide accuracy of the instrument (parts per million).
	Search Logic:		All matching products will have a value less than or equal to the specified value.

User Interface


	Display Type
	Your choices are...
	Analog Meter		Analog meter indicator (needle indicator).
	Digital Display		Display output utilizes both letters and numbers in a digital form.
	Video Display		CRT, LCD flat panel, or other multiline display.
	None		The instrument has no display.
	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.

	User Controls
	Your choices are...
	Manual Controls		The instrument has simple front panel or local controls such as knobs and/or potentiometers.
	Digital Front Panel		Programmable through a digital front panel keypad.
	Computer Interface		Programmable through a computer interface.
	None		The instrument has no user controls.
	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.

Output Options


	Electrical Output		The type of electrical signal that will be produced.
	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.
	Analog Frequency		A format that uses continuous physical variables such as voltage amplitude or frequency variations to transmit information.
	Switch / Alarm Relay		An "output" of a change in state of switches or alarms.
	Other		Other unlisted output 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.

Features & Functionality


	Battery Powered		The instrument requires batteries for full operation, not just a battery backup.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Filters		The instrument has special signal processing or filtering (Butterworth, Bessel, etc.).
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Event Triggered		The instrument can be set to capture / log data when an event happens.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Built-in or Self-calibration		The instrument has a built-in calibrator, which it can be use to test and readjust itself.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Extreme Environment		The instrument can withstand harsh environments like extreme humidity, temperature, dust, etc.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Self-test / Diagnostics		The instrument has self-test or diagnostics ability.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Environment


	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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