PRESSURE SWITCHES PRESSURE SWITCHES Enclosures: Cast Aluminum: Oven baked powder coating hammertone grey Also available in SS 316 Wheaterproof IP 66 EN 60529 (Nema 4X) Standard unit: Barg Optional: PSI / Kg / Pa Standard process connetion: 1/4” NPT F or BSP F RANGES for Differential switches RANGE CODE Standard Diaghragm/O-ring: D..L/ M: Buna N / Buna N D..H: TCP/ Buna N For wetted parts: more possibilities available, see full catalogue ADJUSTABLE RANGE 1 DIFF. RANGE ) mBar / Bar TYPICAL DEADBAND PROOF PRESSURE Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments Repeatablity: typical 0.2% of Full Scale ) Ranges and deadbands are given at 50% of Max. Static pressure. All differential pressure sensors are sensitive to static pressure, both for setpoint and deadband. 2 ) Range only with L1 micro switch. 3 ) D…L can withstand a differential pressure P-low max. 1 bar above P-High. 4 ) D…M, D…H can sustain full High and Low-side reversal. 1 IN THE FOLLOWING TABLE THE ESTIMATED INFLUENCE FOR INCREASING STATIC PRESSURE IS GIVEN. Example: D…H-type Diff. setpoint: 1 bar (1000 mbar). If static pressure increases 10 bar Diff.setpoint will be (10 x – 2 mbar ) = - 20 mbar less = 980 mbar. NOTE: For differential application outside above ranges consult your BETA Switch Representative. We reserve the right to make changes or modify the contents of this document without pior notice. Riels®Instrument does not accept any liability or claim whatsoever for potential errors, incorrect interpretation or possible lack of information in this document. It is clearly and only intented as coarse and general information of our products.

Making the modelcode: Follow steps 1 to 5 Enclosure code Other/ Specials 2 Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments Selection of enclosure type. Selection of range code, see front page Selection of process connection. D.. L: A1N or A1B For low side only. High side: Only “L”-sensor connection Proces connection according to NACE standard are available. Switch Code: For use in H2S environment and/or for (EEx)i applications. 1) For D.P.D.T action, second code figure schould be specifeid as “2” Selection of wetted parts For example: K1 = S.P.D.T./...