This Product Selection Guide contains information to help select products in the Panel Meters - Counters, Hour Meters category on DigiKey.com
Counters and Hour Meters are equipment used to keep a running total and/or control an external device based on that count. The characteristics are batch, count rate, time format, number of characters per row, display type, input type, and output type. The types are batch, preset, tachometer, process timer, time counter, and totalizer.
SelectionCharacteristics
Type: Indicates the style and configuration of the device.
Operating Mode: Describes the signaling scheme(s) which may be used with a device to increment or decrement the displayed count value.
Count Rate: Indicates the maximum speed(s) at which a device can count input events. Multiple values indicate a device with a selectable/configurable count rate.
Time Format: Indicates how a device represents time, in terms of digit count and digit significance.
Number of Characters Per Row: For products incorporating a segmented display, the display width in terms of number of alphanumeric characters that can be shown on each row of the display.
Display Type: Indicates the format of the device’s display.
Display Characters - Height: Indicates the vertical dimension of the digits/letters used by a device to visually display information about some quantity measured or controlled by a device.
Input Type: Indicates the type(s) of signals the device was designed for use with.
Output Type: Indicates the type and number of electrical signal(s) the device provides, such as analog, or solid state.
Voltage - Supply: Typically represented by a range, this indicates the low and high voltage limits which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Reset: Indicates ability to reset a device count, existence of provisions to do so from a device’s front panel, and whether the reset behavior implemented is simple or user configurable.
Panel Cutout Dimensions: Indicates the size and shape of the hole in the panel that would accommodate the device for mounting.
Mounting Type: Indicates how the device is attached.
Termination Style: Selection of termination style used to connect the device to a system, such as quick connect, screw terminals, or wire leads.
Ingress Protection: IP (Ingress Protection) ratings such as (IP20, IP65, IP67, etc.) define how likely water and dirt will get into the system. The first number represents dirt and solid contaminants while the second represents water and liquids.
IP Ratings
| Solids | Liquids | |
|---|---|---|
| 1 | Protected against solids larger than 50mm. | Protected against vertically falling drops of water. Limited Ingress permitted. |
| 2 | Protected against solids larger than 12.5mm. | Protected against vertically falling drops of water with the enclosure tilted up to 15 degrees from vertical. Limited ingress permitted. |
| 3 | Protected against solids larger than 2.5mm. | Protected against spraying water up to 60 degrees from vertical. Limited ingress permitted for 3 minutes. |
| 4 | Protected against solids larger than 1mm. | Protected against water splashed from any direction. Limited ingress permitted. |
| 5 | Protected against dust. Limited ingress of dust permitted. | Will not affect operation of equipment 2-8 hours. Protected against jets of water. Limited ingress permitted. |
| 6 | Dust tight. No ingress of dust 2-8 hours. | Protected against powerful jets of water. Limited ingress permitted. |
| 7 | ______________________ | Protected against the effects of immersion in 15cm-1m for 30 minutes. |
| 8 | ______________________ | Continuous immersion in water up to 3m for long periods of time. |
| 9 | ______________________ | Protected against high pressure jets of hot water. (30 seconds) |
| 9K | ______________________ | Protected against high pressure jets of hot water. (2 minutes) |
ProductExamples
| MFR PART # | H7EC-N-B |
|---|---|
| DIGIKEY PART # | Z861-ND |
| MANUFACTURER | Omron Automation and Safety |
| DESCRIPTION | Totalizer None Required (Battery Included) Panel Mount |
| DATASHEET | Click Here |
| MFR PART # | 703PR-102 |
|---|---|
| DIGIKEY PART # | 267-1011-ND |
| MANUFACTURER | Curtis Instruments Inc. |
| DESCRIPTION | Totalizer 6 ~ 12VAC, 5 ~ 12VDC Through Hole |
| DATASHEET | Click Here |
| MFR PART # | LM-HH4AS-H21 |
|---|---|
| DIGIKEY PART # | 480-6392-ND |
| MANUFACTURER | Honeywell Sensing and Productivity Solutions |
| DESCRIPTION | Time Counter (Hour Meter) 9 ~ 64VAC/DC Panel Mount |
| DATASHEET | Click Here |
| MFR PART # | EMC 1500 |
|---|---|
| DIGIKEY PART # | 2136-EMC1500-ND |
| MANUFACTURER | Lascar Electronics |
| DESCRIPTION | Time Counter (Hour Meter) 5 ~ 27VDC Panel Mount |
| DATASHEET | Click Here |