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PHYSICAL DESCRIPTION AND PERFORMANCES

  • Body, piston and all parts in direct contact with external environment are made of 304 L grade stainless steel.
  • Watertight assembly by the mean of “O” ring seals and special expandable seals.
  • No maintenance is required.
  • Two M20 pitch 2,5 tapped holes for fixation on the equipment to be controlled (see drawing on page 2).
  • Fool-proof threshold values, that are presetable by the user at mounting stage.
  • 61.25 : Wide variation of sensitivity, between 80 and 2500 daN, autorised by the selection of specific dynamic spring washers.
  • 61.35 : > 2500 daN to 3500 daN

In order to avoid stradding during contacts systems DAC 2 and DAT 2, it is necessary to set the difference between thresholds (for example alarm-stop), at least 10% above the high point force (for example alarm threshold 1800 daN, stop threshold 2000 daN).

For DACT systems, each contact may be independently preset.

  • High stability and reproductibility of the threshold value : ± 5%.
  • Contact inversion hysteresys : 10% of the threshold value.
  • Maximal acceptable overload without alteration of initial setting : > 4000 daN for each mechanichal stop.
  • System allowed mobility : DAC : 4 mm ; DAT : 4 mm ; DATC : ± 4 mm.

NOTE : In order to avoid an excessive piston displacement and therefore ensure trouble free operations and maximal life period, the sensitive spring is factory preset as follows :

– the 1 contact system type is 80% of the threshold value prestresse

or

– the 2 contacts system type is preset to the lowest threshold value.

ELECTRICAL CARACTERISTICS

  • Protected micro-switches “CROUZET company” type
    “V4” DIN 41635 B or “CEM company” type “HPE II”.
  • Glass fiber reinforced polyamid housing.
  • Silver / nickel alloy contacts.
  • Inversor fitted with a common point.
  • Working temperature range : – 20°C to +125°C.
  • Mechanical life duration : 2 x 105 operations.
  • Maximal intensity : 5A
  • Selfic circuit : cos” = 0,8.


NOTE : The DYNALARME systems are delivered with a 2 m wiring cable (4 or 7 electrical conductors) connected to the micro-switch(es).

Internal electrical diagram and setting values are displayed on the external identification plate.

Optionally, the DYNALARME systems can be delivered with :

  • 4 indépendante contacts allowing various electrical
    combinations, 2/2 – 1/3 – 4, operating either under pressure
    or traction forces.
  • an electronical stress sensor delivering an output current between 4 and 20 mA.

For these special orders, relevant technical nformations can beoptained from our company.