Explosieveilig
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De mechanische drukverschilschakelaar / verschildrukbewaking PREMASREG~ DS2 met kunststofbevestigingsvoet is geschikt voor het bewaken van over-, onder- en verschildruk van lucht, gasvormige niet agressieve, niet brandbare media in luchtkanalen, be- en ontluchtingsapparaten. Voor stromingsbewaking bij elektrische verwarmingselementen, alsmede voor snaarbreukdetectie, filterbewaking en luchtdrukfoutbeveiliging, voor het bewaken van ventilatoren, luchtkleppen of als grenswaarderegelaar. Het instellen van de schakelpunten gebeurt met de binnenliggende instelschaal. De schakelaars zijn fabrieksmatig afgesteld. De verschildrukschakelaar PREMASREG~ DS2 is inclusief aansluitset ASD-06 (2 m aansluitslang, twee aansluitnippels, schroeven).
| Max. pressure | 5000 Pa (50 mbar) |
|---|---|
| Pressure range | high adjustment accuracy due to individual laser-etched scale for each switch |
| Pressure range (adjustable) | 20… 300 Pa (0.2…3.0 mbar) |
| Switching capacity (Contact load) | 5 (0.8) A, 250 V AC 4 (0.7) A, 30 V DC |
| Contact | single-pole potential-free changeover contact, multi-layer contact, gold-plated (DDC compatible) |
| Media temperature | –30 …+85 °C |
| Operating Difference approx. | 0.1 mbar ± 15 % |
| Pressure connection | P1 (+) for higher pressure P2 (–) for lower pressure Ø 6.2 mm (nipples) |
| Electrical connection | 0.14 – 1.5 mm2, via terminal screws on circuit board |
| Housing | base: material PC (10 % GF), colour light grey (similar to RAL 7035), snap-on lid: material PC, transparent, cable gland PG 11 with strain relief |
| Membrane | silicone, LSR (Liquid Silicon Rubber, tempered at +200 °C, non-outgassing, LABS-free, no emission of varnish-adhesion inhibiting substances), long-term stability of switching points due to trapezoidal bead membranes |
| Humidity | < 90 % r. H., non-precipitating air |
| Mounting | by 4-hole base ring, plastic (included in the scope of delivery), recommended mounting position: vertical (pressure connections downward) – factory setting, horizontal (cap up/ down) |
| Protection class | II (according to EN 60 730) |
| Protection type | IP 54 with top cover (according to EN 60529) |
| Standards | CE conformity, low-voltage directive 2014/ 35/ EU |
| Tests | DVGW (according to DIN 1854), VDE 0630, EN 61058, directive on gas devices 2009/ 142/ EU, CE 0085 A P 0918 |
| Function | Contact 1 – 2 breaks when pressure/ differential pressure rises to the preset value. Contact 1 – 3 closes when pressure/ differential pressure drops and can be used as signal contact. |
