The Hengstler 0497793 is a pneumatic preset counter from the Type 497 series, built as a straightforward adding counter for machines where an operator needs to set a target count and have the machine react once it’s reached. It’s a 3-digit mechanical display unit, so the preset value stays permanently visible rather than disappearing once the count starts.
Reset is integrated pneumatic, triggered through a hose coupler M5 connection, and the preset itself is set with a simple pushbutton, so there’s no separate tool or software needed on the factory floor. It mounts through a standard 52 x 52 mm front panel cutout, which matches the panel cutout most factories already use for this counter family, so it’s usually a straightforward swap when replacing an older unit.
From our experience, this gets specified for production lines and packaging machinery where a simple, rugged, non-electronic preset counter is preferred over an electronic one, often because the panel already has pneumatic control lines run to it. Before we quote this, we would normally check whether you need the standard or ATEX-rated version, and confirm the connection type matches your existing air line fitting. Hope this helps.
