Laserfluence calculator

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DisplayThe measurement results are displayed by the user autonomously at the system controller level. Data transfer is adapted to the fieldbus system used.

The PowerMeasuringModule is suited to many other applications in automated manufacturing with solid-state lasers – not just in macro-processing, but also micro-processing. The PMM's field of application can optionally be extended to low average powers as well as pulsed beam sources.

Ophirpower meter

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Gentecpower meter

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Laserintensity calculator

The PowerMeasuringModule is operated solely via the system controller. The sequence of a power measurement can be divided into three stages:

The PowerMeasuringModule measures the laser power calorimetrically. The absorber is irradiated by the laser for a defined period. With the heat capacity of the test body, the temperature increase and the exposure time, the optical power is calculated in a few seconds. The exposure time measurement increases the reliability of the results.

As a standard feature, the PowerMeasuringModule is supplied with exposure time measurement and also a protective glass cassette, which can be replaced quickly without tools. The following models are available:

Laser power is monitored in the production breaks where necessary. The robot moves to a measuring position with the PMM for this purpose. The measurement is taken on the defocused beam.

Coherentpower meter

The measurement result is independent of the beam dimension and the beam position. The absorber cools via thermal conduction to the surrounding air. This restricts the measurement frequency of the system. The plant controller can query the absorber temperature at any time and determine the new irradiation period.

Thorlabs'power meter

Fast measurement sequenceWhen the PowerMeasuringModule is integrated into a industrial robot manufacturing set-up, the aim is to achieve the shortest possible clock cycle when measuring. In order to reduce the measuring duration, the standstill time of the robot can be reduced to just the irradiation period of the PowerMeasuringModule.

Entry into automated power monitoringThe PowerMeasuringModule (PMM) is a robust laser power measurement system that determines optical power directly in the production zone. Due to the fieldbus interface, the PMM can be easily integrated into equipment controllers – various systems are available. Fully automated measurements can be carried out and documented due to the direct coupling to the machinery controller. This creates the basis for beam monitoring during processing – an essential component of quality assurance in manufacturing with lasers.

The PowerMeasuringModule is suited to users who have specialised in manufacturing with lasers. The system is used frequently in automotive manufacturing. Car bodies are frequently welded with robot-controlled solid-state lasers (Nd:YAG-, fibre, disk or diode lasers).

The PMM has received an upgrade and is now available as the PMM AP3s series. The designation AP3s stands for the following improvements: