Hengstler Totalizing Counter 634/635

Hengstler Totalizing Counter 634/635

Whether you use electronic, electromechanical, mechanical or pneumatic counters, the devices available have been designed to meet your requirements. Our range extends from mini-counters through to sophisticated, programmable control counters, multifunction counters, position displays, displays, tachometers and timers.

Totalizing Counter 634/635
Totalizing Counter 634/635

Totalizing counters tend to be used to register the number of events and display the result as a digital numerical value. The key characteristics of this versatile range of products, as you would expect from any HENGSTLER product, are state-of-the-art technology, appealing design, quality and reliability. Examples of typical applications: Production counting, recording flow volumes.

Type 634/635 is an electromechanical mini-totalizing counter with a 6 or 7-digit optical display, with standard pattern connector arrangement. The small dimensions and low power consumption make this the ideal device for front panel installation or PCB use. Types 1 and 3 can be machine-soldered and can, if necessary, be washed with no problems. The 634 variant is characterized by its excellent protection against magnetic disturbance, while model 635 is particularly impact-resistant.


  • Small outer dimensions
  • Low power consumption
  • Electric connections in standard pattern
  • Suitable for PCB configuration
  • Machine solderable and washable
  • Ingress protection IP 65

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Product Family 634/635
Function Totalizing counter
Technology Electromechanical
Digits 6-digit
Display 6-digit
Preset none
Digit Height [mm] 4 mm (0.2 in), visual
Voltage 5 VDC
12 VDC, 24 VDC
Reset without reset
Duty Cycle at 25 °C 100%
RI + RV [Ohm] 320-3720
Power Consumption 60-400 mW
Pulse Length min. 50 ms
Supply Voltage 5 VDC
12 VDC, 24 VDC
Count Frequency [Hz] 10 Hz
Count Input adding
Electrical Connection solder pins
wiring posts 0.6 x 0.6 mm (0.02 x 0.02 in)
Maintenance-Free operation 10 pulses

Download Data Sheet: Totalizing Counter 634/635

Ref: hengstler.de