Digital Counters Specifications

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Unit Specifications

	Number of Functions
	Your choices are...
	Single Function		The unit has only one function.
	Multi-function		The unit can be setup or programmed for more than one function.
	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.
	Functions
	Your choices are...
	Frequency Counter		Frequency counters are units for displaying frequency, the number of cycles per second of a waveform. The unit of frequency is Hertz (Hz).
	Position Indicator		Position indicators can accept, process, and display angle or travel data.
	Arithmetic Functions		The counter / timer can be programmed to perform simple or complex arithmetic functions. These arithmetic functions may include the sum, difference, multiple, square root, etc.
	Controller		Controllers have outputs to regulate or control equipment based on sensor inputs or preset limits.
	Batch Counter		Batch counters count UP only and are usually pre-settable so that when the required number of batches or pieces has been completed, the process can stop automatically.
	Count Totalizer		Generally, counters can accumulate counts but cannot control a machine. Some totalizers are pre-settable, but their primary function is to keep track of counts over a relatively long period of time.
	Event Counter		Even counters are units that count the occurrences of a certain condition.
	Preset		Preset counters (or predetermining counters) can control an external circuit when its counted total matches user-entered preset limits. Electronic models are the most versatile and offer high performance at a relatively low price. Mechanical and electrical types offer simplicity of installation and operation.  Preset mode is a counting mode where counting is generally subtractive. The counter resets or auto-recycles to the preset count. When the counter counts to zero, the output associated with the preset number occurs.
	Pulse Counter		Pulse counters are used to count a momentary but sharp change in current and voltage. Count pulses include square waves and rectangular waves. Pulses are digital signals; the voltage or current is either "on" or "off."
	Counter / Timer Combination		Counter / timer combinations can perform both counting and timing functions.
	Other		Other unlisted, specialized, or proprietary configuration.
	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.
	Direction
	Your choices are...
	Up		The counter moves forward (UP) in its counting sequence.
	Down		The counter moves backward (DOWN) in its counting sequence.
	Bi-directional Counter		The counter can move forward or backward (UP or DOWN) in its counting sequence.
	Other		Other unlisted, specialized, or proprietary directions.
	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.
	Reset
	Your choices are...
	None		The user cannot reset the unit.
	Manual		Reset is performed through a manual knob or lock-and-key reset.
	Remote		The unit can be reset remotely by a switch or computer interface.
	Auto Reset		Auto reset is a controller feature that continuously compensates for droop by integrating errors over time and adjusting the proportional band appropriately.
	Other		Other unlisted, specialized, or proprietary configurations.
	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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Input

	Number Input Channels		This is the total number of analog and digital input channels.
	Search Logic:		All matching products will have a value greater than or equal to the specified value.
	Maximum Count Frequency		This is the sampling frequency of the counter.
	Search Logic:		All matching products will have a value greater than or equal to the specified value.
	Signal Input Type
	Your choices are...
	Voltage		The unit will accept any analog voltage input. Input voltage is a simple (usually linear) function of the measurement.
	Current		The counter / timer will accept a current (transmitter) input.
	Frequency / Pulse		Input from any device that outputs a frequency signal or pulse train.
	Charge		Charge is the output of a piezoelectric device. Typically, a charge signal requires filtering and amplification.
	Other		Other unlisted, specialized, or proprietary configurations.
	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.
	Sensor & Specialized Inputs
	Your choices are...
	Digital Logic		The unit can accept digital logic signals such as those from a PLC.
	Encoder		The signals are inputs for an encoder, such as binary, gray, BCD, or quadrature.
	Flow Sensors		The inputs are signals from any type of flow meter, including positive displacement types, turbine flow meters, ultrasonic, or mass flow meters, etc.
	Level Sensors		Inputs are accepted from any type of level sensor.
	Mechanical Switch / Relay		The inputs are for a discrete, on/off signal from an exterior mechanical switching device.
	Solid-state Switch		The inputs are from a solid-state device such as a sensor. Typically, this includes a choice of sinking or sourcing.
	Temperature Sensors		The inputs are for a thermocouple or thermocouple series. Inputs for thermistors and potentiometers handle variable resistance as a function of the process being measured. The input may also be designed for a resistance temperature detector (RTD).
	Other		Other unlisted, specialized, or proprietary configurations.
	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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Outputs

	Output / Interface
	Your choices are...
	Voltage		Any analog voltage output. Output voltage is a simple (usually linear) function of the measurement.
	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		A format that uses continuous physical variables such as voltage amplitude or frequency variations to transmit information.
	Mechanical Switch / Relay
	Solid-state Switch / Relay		A solid-state switching device with no moving parts that switches current on and off.
	Optocoupler		Optocouplers are capable of transferring an electrical signal between two circuits while isolating the circuits from each other.
	TTL Compatible		Transistor-Transistor Logic (TTL) where the voltage swing is between 0.4 to 2.4 volts, and the supply voltage is 5 volts.
	Ethernet		A local-area network (LAN) protocol developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or star topology and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. Ethernet uses the CSMA/CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards.
	Serial		A standard digital output protocol (serial) such as RS232, RS422, RS485, etc.
	Parallel		A standard digital output protocol (parallel) such as IEEE488, Centronics port, printer port, etc.
	Other		Other unlisted, specialized, or proprietary configuration.
	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

	Display Type
	Your choices are...
	Non-indicating		The counter / timer is non-indicating.  Typically counter / timer boards do not have a display.
	Wheels / Dial		Wheels have the numbers 0-9 printed on them and rotate as the unit registers counts or time.  A dial is typically a knob with a printed scale for counts or time.
	LED		Light emitting diode (LED) displays are segmented or dot matrix displays allowing for numeric only and alphanumeric character representation.
	LCD		Created by sandwiching an electrically reactive substance between two electrodes, LCDs can be darkened or lightened by applying and removing current.
	Backlit LCD		A backlit LCD offers visibility in low light situations.
	Vacuum Fluorescent Display		Vacuum fluorescent displays (VFDs) have one anode coated with phosphor that glows when struck by electrons.
	Video		The data is presented via CRT, LCD, or other multi-line forms.
	Other		Other unlisted, specialized, or proprietary configuration.
	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.
	Remote Display		The display is a remote type.  The unit is operated via handheld programmer or computer interface.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Number of Digits (or Characters)		The total number of digits (numeric or alpha-numeric) available on the display.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Digit Height		The height of one digit on the display.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Programming Options
	Your choices are...
	None		The device has no integral means of input.
	Potentiometers / Dials		Input is achieved by turning a pointer along the face of a graduated measurement register.
	Switches		Interface is controlled through the use of one or more simple options including push-button systems (on / off), toggles, dip switches, etc.
	Keypad		A form of local interface that can consist of letters, numbers, function keys and often other symbols (such as punctuation marks and mathematical symbols) to facilitate input of data. For example, a telephone keypad.
	Computer Programmable		A remote form of interface that can consist of letters, numbers, function keys and often other symbols (such as punctuation marks and mathematical symbols) to facilitate input of data. For example, a computer keyboard.
	Web-enabled		The device can be "hooked up" to the internet for programming or remote reading.
	Other		Unlisted, specialized, or proprietary configuration.
	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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Physical Specifications

	Mounting		Manufacturers use many of these terms interchangeably. Keeping this in mind, we have delineated the options as follows to help you locate the ideal item(s) for your needs.
	Your choices are...
	Stand-alone		The device does not need to be mounted. It can stand on its own.
	DIN Rail Mount		The device is designed to be mounted on a standard DIN rail.
	Panel / Flange Mount		The device can be placed into, or through, a depression within an existing panel or wall so that its face is flush, or nearly flush, with the panel.  The unit may have flanges so that it can be mounted with the use of external hardware (screws, bolts, rails, etc.).
	PCB Mount		Includes options for mounting directly to a printed circuit board (PCB).
	Portable		The unit may be handheld, or have a case or wheels for easy portability.
	Rack Mount		The device is designed to be mounted directly into a rack. It comes equipped with the necessary rail guides, flanges, or tabs to be mounted in this fashion. The standard 19" rack is typical of this style.
	Other		Other unlisted, specialized, or proprietary configuration.
	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

	Explosion Proof		Explosion-proof devices have totally enclosed housings that are constructed to withstand internal explosion of a specified gas, vapor or dust. Should such an explosion occur, the enclosure would prevent the ignition or explosion of the gas or vapor surrounding the motor enclosure. Several explosion-proof ratings are governed by Underwriter's Laboratories (UL) and other certification bodies such as National Electronics Manufacturer's Association (NEMA).
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Audible or Visual Alarms		The unit contains audible or visual alarms to indicate that the process has either exceeded or fallen below the set point of that process.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Programmable Engineering Units		The display can be programmed to show a variety of Engineering units chosen by the user.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
	Data Logger or Recorder		The instrument has the ability to log or record data.
	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

	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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