English copy version 2010/REV03 PISTON PRESSURE SWITCH DS-507 / DS-502

INTRODUCTION We are known throughout Europe as a leading specialist for piston pressure switches and provide our customers with a broad range of pressure switch designs. CONTENTS Page Technical Data Ordering information Terminal assignment Our pressure switches are distinguished by their durable precision, a broad spectrum of applications and uncompromising reliability. Function Many years of experience with material combinations, processing techniques and production tolerances enable us to meet the most varied requirements in a targeted and flexible manner. Reset differential pressure Dimensions...

TECHNICAL DATA design connection adjusting setting protection installation weight General information piston spring-loaded, mechanical stop prevents compression spring seizing due to excessive turning internal G 3/8 thread or flange surface adjusting screw cover or adjusting knurl fixing cover or lockable adjusting knurl (E10 H2 closure) arbitrary basic type 0,5 kg Hydraulic ø 6 mm ø 5 mm 10-100 bar 5-55 bar 40-240 bar 20-150 bar 400 bar 300 bar 500 bar 500 bar 200 bar 200 bar 400 bar deviation less than 1% (depending on operating range) - 40 °C to + 90 °C oil, oil-water-emulsion 10 bis 800 mm²/s...

pipe installation flange connection panel installation adjusting knurl with scale lockable adjusting knurl with scale (E10 H2 closure)) = special low-friction seal, only for following pressure ranges: 5- 55 bar 10-100 bar 40-240 bar 20-350 bar = = = = = pmax. standard pmax. special SS seal Fixed switching points preset by manufacturer: - standard pressure rising - falling if desired (several additional details separated by slash) (several additional details separated by slash) = with 90° elbow connection plate (p max. = 350 bar) = sealable PO (not for versions with scales) undesign. = cable socket...

RESET DIFFERENTIAL PRESSURE 1. Standard seal (normal version): The hysteresis achieved during continuous operation is approx. 7-12 % of the final value at a set pressure of approx. 60-70 % of the max. adjustable switching pressure. Example: In the case of a DS-507-100 pressure switch with a pressure range of 10-100 bar, a hysteresis of approx. 7-12 bar is achieved at a set pressure of 70 bar. 2. Special low-friction seal (SS design) The hysteresis achieved during continuous operation is approx. 3-6 % of the final value at a set pressure of approx. 60-70 % of the max. adjustable switching pressure....

setting protection The scale is only provided for orientation. The exact configuration of the switching pressure should be realised with a pressure gauge. The scale is only provided for orientation. The exact configuration of the switching pressure should be realised with a pressure gauge. The .../P90 version is only available up to Pmax. 350 bar (flange version only). Required surface quality of unit support surface

The scale is only provided for orientation. The exact configuration of the switching pressure should be realised with a pressure gauge. version “90°” version “axial” standard version

^^^■M HYDRAULISCHE ERZEUQNISSE QMBH J CIE KG