Counters

RS Components provides a versatile range of counters to suit a variety of devices and functions. With digital, electromechanical and purely mechanical counters available, RS provides a solution to industrial, commercial and project applications wherever precise counting and tallying is required. You'll find counters available from trusted brands such as Omron, Red Lion, Kubler, Hengstler and our own RS PRO selection.

Types of Counter

  • Digital counters - are electronic in design and will often have a digital display. These counters work off a latching circuit or "flip-flop" when the time gets to the set value the relay will switch from 1 position to the next (flip), then the next pre-set value it will switch back (flop). It latches in each position and holds it so that current can flow.
  • Asynchronous or ripple counters - consisting of a number of flip-flops these count a stream of pulses applied to the counter’s input. The output is a binary value whose value is equal to the number of pulses received.
  • Synchronous counters - provide a more reliable circuit for counting purposes, and for high-speed operation, as the clock pulses in this circuit are fed to every flip-flop in the chain at exactly the same time.
  • Decade counters - used to count decimal digits rather than binary.
  • Ring counters - have a cascade layout of flip-flops in a ring so that the output of the last is fed into the input of the first.
  • Mechanical counters - are built using mechanical components, They typically consist of a series of disks mounted on an axle, with the digits 0 through 9 marked on their edge.
  • Hour meters - are instruments used to track and record elapsed time, normally displayed in hours and tenths of hours. Most hour meters are used to log the running time of equipment for proper maintenance of devices or machines.

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Description Price Supply Voltage Count Mode Display Type Input Type Connection Type Reset Method Number of Digits Mounting Type Output / Interface Count Direction Digit Height Backlighting Maximum Count Frequency Display Range
RS Stock No. 348-1929
Mfr. Part No.H7EC-N
BrandOmron
£56.80
Each
Units
- - LCD No Voltage Screw Manual 8 Panel Mount Voltage - 8.6 mm - 1kHz -
RS Stock No. 687-6140
Mfr. Part No.H7CX-AUD1-N
BrandOmron
£191.50
Each
Units
12 → 24 V dc, 24 V ac Seconds LCD Voltage Screw Automatic, Manual 6 Panel Mount Contact Bi-Directional 10 mm - 5kHz -99999 → 999999
RS Stock No. 687-6131
Mfr. Part No.H7CX-AU-N
BrandOmron
£191.50
Each
Units
100 → 240 V ac Seconds LCD Voltage Screw Automatic, Manual 6 Panel Mount Contact Bi-Directional 10 mm - 5kHz -99999 → 999999
RS Stock No. 687-6143
Mfr. Part No.H7CX-AW-N
BrandOmron
£217.70
Each
Units
100 → 240 V ac Seconds LCD Voltage Screw Automatic, Manual 6 Panel Mount Contact Bi-Directional 10 mm - 5kHz -99999 → 999999
RS Stock No. 163-5152
Mfr. Part No.H8PS-8BP
BrandOmron
£613.50
Each
Units
24 V dc Hours LCD Logic - - - Flush Mount Relay - 11 mm - - -
RS Stock No. 348-1979
Mfr. Part No.H7ET-NFV
BrandOmron
£86.55
Each
Units
24 → 240 V ac/dc - LCD Voltage Screw Manual 7 Flush Mount - - 8.6 mm - - 0 → 3999 d 23.9 h, 0 → 999999.9
RS Stock No. 348-1913
Mfr. Part No.H7EC-N-B
BrandOmron
£56.80
Each
Units
- - LCD No Voltage Screw Manual 8 Panel Mount Voltage - 8.6 mm - 1kHz -
RS Stock No. 348-1957
Mfr. Part No.H7ET-N
BrandOmron
£58.10
Each
Units
4.5 → 30 V dc - LCD - Screw Manual 7 Flush Mount - - 8.6 mm - - 0 → 3999 d 23.9 h, 0 → 999999.9
RS Stock No. 348-1890
Mfr. Part No.H7EC-NFV-B
BrandOmron
£78.60
Each
Units
24 → 240 V ac/dc - LCD Voltage Screw Manual 8 Panel Mount Voltage - 8.6 mm - 20Hz -
RS Stock No. 687-6119
Mfr. Part No.H7CX-A4-N
BrandOmron
£177.40
Each
Units
100 → 240 V ac Seconds LCD Voltage Screw Automatic, Manual 4 Panel Mount Contact Bi-Directional 10 mm - 5kHz -99999 → 999999
RS Stock No. 348-1991
Mfr. Part No.H7ET-NV
BrandOmron
£58.10
Each
Units
4.5 → 30 V dc - LCD Voltage Screw Manual 7 Flush Mount - - 8.6 mm - - 0 → 3999 d 23.9 h, 0 → 999999.9
RS Stock No. 611-7592
Mfr. Part No.K3HB-CNB 100/240VAC
BrandOmron
£300.80
Each
Units
24 V ac/dc, 100 → 240 V ac Minutes LCD Pulse Screw - 5 - Relay, Transistor Down, Up 14.2 mm Yes 50kHz -19 999 → 99 999
RS Stock No. 687-6137
Mfr. Part No.H7CX-A11D1-N
BrandOmron
£191.50
Each
Units
12 → 24 V dc, 24 V ac Seconds LCD Voltage 11 Pin Socket Automatic, Manual 6 Panel Mount Contact Bi-Directional 10 mm - 5kHz -99999 → 999999
RS Stock No. 348-1856
Mfr. Part No.H7EC-NV-H
BrandOmron
£56.80
Each
Units
- - LCD Voltage Screw Manual 8 Panel Mount - Up 8.6 mm Yes 1kHz 0 → 99999999
RS Stock No. 348-1878
Mfr. Part No.H7EC-NV
BrandOmron
£56.80
Each
Units
- - LCD Voltage Screw Manual 8 Panel Mount - Up 8.6 mm - 1kHz 0 → 99999999
RS Stock No. 827-6731
Mfr. Part No.H7CX-A4D-N-DC1224
BrandOmron
£177.40
Each
Units
12 → 24 V dc Seconds LCD No Voltage, Voltage Screw Automatic, External, Manual 4 Flush Mount SPDT Contact Bi-Directional 12 mm Yes 10kHz -999 → 9999
RS Stock No. 348-1907
Mfr. Part No.H7EC-NFV
BrandOmron
£78.60
Each
Units
24 → 240 V ac/dc - LCD Voltage Screw Manual 8 Panel Mount Voltage - 8.6 mm - 20Hz -
RS Stock No. 348-1840
Mfr. Part No.H7EC-NV-BH
BrandOmron
£56.80
Each
Units
24 V dc - LCD Voltage Screw Manual 8 Panel Mount - Up 8.6 mm Yes 1kHz 0 → 99999999
RS Stock No. 827-6716
Mfr. Part No.H7BX-AW AC100-240
BrandOmron
£450.60
Each
Units
100 → 240 V ac Pulse LCD No Voltage, Voltage Screw Automatic, External, Manual 6 Flush Mount SPST-NO Contact, Transistor Bi-Directional 13.5 (Count value) mm, 8 (Set value) mm Yes 10kHz -99999 → 999999
RS Stock No. 348-2130
Mfr. Part No.H7ER-NV-BH
BrandOmron
£74.41
Each
Units
- Seconds LCD Voltage Screw No Reset 4 Panel Mount - - 8.6 mm Yes 1kHz 0 → 9999