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Instrument Type
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Your choices are...
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Counter
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A counter is a complete instrument for detecting, totalizing, and indicating a sequence of events. A mechanical, electromechanical or electronic device, which keeps track of the number of input signals or pulses.
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Timer
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A timer is a device for automatically starting, or stopping, a machine or other device.
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Counter / Timer Combination
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A counter / timer combination can perform both counting and timing functions.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Number of Functions
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Your choices are...
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Single Function
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The unit has only one function.
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Multi-function
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The unit can be set-up or programmed for more than one function.
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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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Direction
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Your choices are...
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Up
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The counter can advance forward (UP) in its counting sequence.
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Down
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The counter can advance backward (DOWN) in its counting sequence.
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Bi-directional Counter
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The counter can advance forward or backward (UP or DOWN) in its counting sequence.
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Other
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Other unlisted, specialized, or proprietary direction.
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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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Functions
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Your choices are...
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Arithmetic Functions
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The counter / timer can be programmed to perform simple or complex arithmetic functions. Arithmetic functions can include sum, difference, multiply, square root, etc.
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Controller
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A controller has outputs to regulate or control equipment based on sensor inputs or preset limits.
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Batch Counter
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Batch counters count up only and are usually presettable so that when the required number of batches or pieces has been completed, the process can automatically stop.
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Count Totalizer
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Generally, a counter that can accumulate counts but cannot control a machine. Some totalizers are presettable, but their primary function is to keep track of counts over a relatively long period of time.
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Event Counter
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A unit that counts the occurrences of a certain condition.
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Preset
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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 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.
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Pulse Counter
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A counter used to count a momentary sharp change in current and voltage. A count pulse is a square wave, or a rectangular wave. Pulses are digital signals; the voltage or current is either "on" or "off."
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Delay Cycle
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When voltage is applied to the input terminals, the time delay cycle starts. At the end of the preset time delay, the relay is energized.
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Delay On Timer
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Once the timer has received its input signal, a predetermined period of time will pass before the output is energized. At the end of the time delay the contacts open or close. If the contact is normally open (NO) the load energizes at the end of the time delay. If the contact is normally closed (NC) the load de-energizes after the time delay. Removing power resets the time delay and output. Also called on-delay, delay on make, delay on operate, operate delay, pre-purge delay, and delay on energization.
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Delay Off Timer
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The timer starts its timing function when the power supply is interrupted. When the power is initially supplied, the output relay contacts react immediately. When the power supply is removed, the output relay contacts remain in the activated position and the time period starts. When the time has elapsed the output relay contacts release. Also called delay on release, delay on break, release delay, post-purge delay, and delay on de-energization.
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One Shot Timer
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When power is applied to the timer, the contacts change position immediately and remain changed for the set period of time after the timer has received power. After the set period of time has passed, the contacts return to their normal position. May also be called pulse former.
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Interval Delay Timer
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This is opposite to delay on, in that the relay is energized immediately on application of the supply or closure of switch input and goes off at the end of the period. Interval delay may also be referred to as delay pulse.
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Recycle Timer / Percentage Timer
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In the recycle timer circuit, the closing of the control switch starts the cycling function. The load continues to turn ON and OFF at regular time intervals as long as the control switch is closed. The cycling function stops when the control switch is open. This function is sometimes called a flasher, or pulse generator.
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Frequency Counter
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A unit for displaying frequency, the number of cycles per second of a waveform. The unit of frequency is Hertz (Hz).
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Position Indicator
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The unit can accept, process, and display angle or travel data.
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Ratemeters (Tachometers)
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A device that monitors and displays rate. A rate is, generally, any unit per unit of time. Examples: RPM, ft/min, barrels/hour. A tachometer is a ratemeter that specifically displays RPM.
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Time Meter / Indicator (Clocks)
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Time totalizers or indicators are typically used in applications for display of elapsed process time or tracking running time of factory machinery.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Reset
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Your choices are...
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None
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The user cannot reset the unit.
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Manual
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Reset is performed through a manual knob or lock-and-key reset.
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Remote
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The unit can be reset remotely by a switch or computer interface.
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Auto Reset
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A feature of the controller that continuously compensates for droop by integrating errors over time and adjusting the proportional band appropriately.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Number of Time Ranges
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Your choices are...
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Single Time Range
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The timer has a single time range, which may be fixed or programmable.
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Multiple Time Ranges
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The timer can be programmed for multiple time ranges.
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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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Minimum Time Setting
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Minimum time interval timer can be configured for.
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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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Maximum Time Setting
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Maximum time interval timer can be configured for.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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Mounting
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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.
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Your choices are...
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Stand-alone
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The device does not need to be mounted. It can stand on its own.
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DIN Rail Mount
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The device is designed to be mounted on a standard DIN rail.
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Panel / Flange Mount
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The device can be placed into, or through, a depression within an existing panel or wall so that it's 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.).
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PCB Mount
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Includes options for mounting directly to a printed circuit board (PCB).
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Portable
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The unit may be handheld, or have a case or wheels for easy portability.
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Rack Mount
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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.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Number Input Channels
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The total number of analog and digital input channels.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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Maximum Count Frequency
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Sampling frequency of counter.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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Signal Input Type
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Your choices are...
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Voltage
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The unit will accept any analog voltage input. Input voltage is a simple (usually linear) function of the measurement.
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Current
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The counter / timer will accept a current (transmitter) input.
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Frequency / Pulse
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Input from any device that outputs a frequency signal or pulse train.
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Charge
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Charge is the output of a piezoelectric device. A charge signal typically requires filtering and amplification.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Sensor & Specialized Inputs
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Your choices are...
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Digital Logic
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The unit can accept digital logic signals such as those from a PLC.
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Encoder
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Input for an encoder signal such as binary, gray, BCD, or quadrature.
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Flow Sensors
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Signals from any type of flow meter including positive displacement types, turbine flow meters, ultrasonic, or mass flow meters, etc.
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Mechanical Switch / Relay
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Input for a discrete, on/off signal from an exterior mechanical switching device.
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Solid-state Switch
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Input from a solid-state device such as a sensor; typically includes choice of sinking or sourcing.
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Temperature Sensors
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Input for a thermocouple or thermocouple series. Input for thermistors and potentiometers handle variable resistance as a function of the process being measured. Input designed for a resistance temperature detector.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Output / Interface
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Your choices are...
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Voltage
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Any analog voltage output. Output voltage is a simple (usually linear) function of the measurement.
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Current
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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.
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Frequency
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A format that uses continuous physical variables such as voltage amplitude or frequency variations to transmit information.
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Mechanical Switch / Relay
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Solid-state Switch / Relay
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A solid-state switching device with no moving parts that switches current on and off.
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Optocoupler
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Optocouplers are capable of transferring an electrical signal between two circuits while isolating the circuits from each other.
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TTL Compatible
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Transistor-Transistor Logic (TTL) where the voltage swing is between 0.4 to 2.4 volts, and the supply voltage is 5 volts.
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Ethernet
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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.
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Serial
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A standard digital output protocol (serial) such as RS232, RS422, RS485, etc.
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Parallel
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A standard digital output protocol (parallel) such as IEEE488, Centronics port, printer port, etc.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Display Type
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Your choices are...
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Non-indicating
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The counter / timer is non-indicating. Typically counter / timer boards do not have a display.
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LED
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Light emitting diode (LED) displays are segmented or dot matrix displays allowing for numeric only and alphanumeric character representation.
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LCD
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Created by sandwiching an electrically reactive substance between two electrodes, LCDs can be darkened or lightened by applying and removing current.
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Backlit LCD
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A backlit LCD offers visibility in low light situations.
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Vacuum Fluorescent Display
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Vacuum fluorescent displays (VFDs) have one anode coated with phosphor that glows when struck by electrons.
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Video
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The data is presented via CRT, LCD, or other multi-line forms.
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Other
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Other unlisted, specialized, or proprietary configuration.
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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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Remote Display
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The display is a remote type. The unit is operated via handheld programmer or computer 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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Number of Digits (or Characters)
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The total number of digits (numeric or alpha-numeric) available on the display.
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Search Logic:
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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.
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Digit Height
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The height of one digit on the display.
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Search Logic:
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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.
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Programming Options
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Your choices are...
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None
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The device has no integral means of input.
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Potentiometers / Dials
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Input is achieved by turning a pointer along the face of a graduated measurement register.
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Switches
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Interface is controlled through the use of one or more simple options including push-button systems (on / off), toggles, dip switches, etc.
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Keypad
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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.
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Computer Programmable
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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.
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Web-enabled
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The device can be "hooked up" to the internet for programming or remote reading.
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Other
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Unlisted, specialized, or proprietary configuration.
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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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Explosion Proof
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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).
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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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Audible or Visual Alarms
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The unit contains audible or visual alarms to indicate that the process has either exceeded or fallen below the set point of that process.
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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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Programmable Engineering Units
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The display can be programmed to show a variety of Engineering units chosen by the user.
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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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Data Logger or Recorder
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The instrument has the ability to log or record data.
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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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This is the full required range of ambient operating temperature.
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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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electronic timer,
timer control,
555 timer project,
12 volt timer,
clock,
programmable timer,
wall switch timer,
electrical timer,
cycle count,
control timer,
electronic timer circuit,
timer controls,
electronic timer diagram,
12 volt timer switch,
event counter,
electric timer switch,
monostable timer,
wind direction indicator,
electronic switch timer,
electronic digital timer
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