OPERATING-HOURS-METERS

Unbeatable Advantages

• cannot be manipulated
• cannot be removed
• simple installation
• stainless steel body
• very robust
• long life
• high accuracy
• Indicator range: 99,999 hours
• Battery life: approx. 10 years

"an attractive long-term proposition"

The electronic operating hours meters have been designed for ascertaining the operating hours of equipment and machinery.

The counters are very easy to install. Due to the special design of the mounting, de-installation is impossible. The equipment can only be deactivated by destroying it.

Compared with the alternatives, a system such as this is an attractive long-term proposition.

vibro.counter

Activated by vibration

When the high-sensitivity acceleration pick-ups sense a movement of the system, the integrated clock is put into operation, which begins to total elapsed time. After it has been started, the clock continues to run for at least two minutes, in order to record all events without interruption.

As the kinetic energy operating on the system is used only to switch on the battery-powered clock and not, as in mechanical counters, to actually run the clock, the accuracy of the elapsed time recorded is affected neither by the intensity of the vibration nor by the location of the installation within the system.

This enables it to be used meaningfully in applications where such recording would not otherwise be possible.

roto.counter

Activated by rotation

The roto.counter is equipped with a magnetic pickup speed sensor. The sensor detects when ring gear teeth, or other ferrous projections, pass the tip of the sensor. Electrical impulses are produced by the sensor's internal coil and activate the counter. No external magnet is needed.

The output of the sensor is a function of rotational speed, gear-tooth dimensions and the air gap between the pickup and the gear-tooth surface. The air gap should be as small as possible. For example the unit starts counting on a shaft with diameter of 2" at 300 rpm and a gap of 0,1".

The sensor is epoxy encapsulated, impervious to dirt, oil and moisture. Unlike conventional magnetically-operated reed switches it has no mechanical parts to stick, wear or break and can therefore withstand shocks and vibrations during operation. The sensor does not require external excitation like hall-sensors do.

All this features enables the long (up to 10 years) operation time of the system.

At both units all parts are mounted in a stainless steel body, and are fully encapsulated. It is not possible to wind back the counter, to switch off the equipment, or to remove the battery. There is thus no possibility whatsoever of any manipulation.

Installation