Data Sheet for Linear Sensors

Transcription

1 HEM12 internal flange HEM12 external flange Displacement sensor for hydraulic applications High degree of protection IP67 and max. 250 bar operating pressure With external magnetic drag - capsule of the sensor element Mounting via internal or external flange Measuring lengths from 50 mm to 1000 mm Long lifetime (up to 100 million movements) The sensors are designed for operating pressures of max. 250 bar with peak values of 400 bar. The mechanical detection of linear movements is done by a magnetic drag. Electrical Data Effective electrical travel (+1/-0 mm) 1.) Total electrical travel (±1 mm) 1.) Total resistance 1.) 5 kohm ( mm) / 10 kohm ( mm) / 20 kohm ( mm) Resistance tolerance ±20% Independent linearity (best straight line) 1.) Theoretical resolution 1.) Backlash (Hysteresis) 1.) ±0,35% Almost infinite 0,25 mm Max. / recommended wiper current1.) 10 ma (@ 40 C, 1 min in case of failure) / < 1 µa Power 40 C 120 C) Isolation voltage 1.) Isolation resistance 1.) Mechanical Data, Environmental Conditions, Miscellaneous Mechanical stroke (+5 mm) 1.) Lifetime (90% effective electrical travel) 2.) Max. operational speed Max. acceleration Operational RT 1.) 2.) Operational temperature Storage temperature Protection grade (IEC60529) Vibration (IEC , Test Fc) Shock (IEC , Test Ea) Housing length (+94,7 mm) Included in delivery 1 W (50 mm) / 2 W (100 mm) / 3 W ( mm) < 100 μa@500 VAC, 1bar, 2s 1000 MOhm@500 VDC, 1bar, 2s > 25 million meters or 100 million movements (the smaller value applies) 5 m/s 10 m/s² < 0,5 N C C IP67 20 g ( Hz, 0,75mm) 50 g, halfsine, 11 ms 1 x magnetic cursor Material housing Steel AISI 304 Connection type PUR-Cable 3-pole shielded 1 m Page: 1 of 5

2 1.) According IEC ) Determined by climatic conditions according to IEC 68-1, para without load collectives Please note: Max. permissible supply voltage <75 VDC respectively <50 VAC in addition the max. power rating must be observed Order Code Description Series: Effective electrical travel: Option 50 mm 100 mm Option 150 mm 200 mm Option 250 mm Option 300 mm Option 350 mm 400 mm Option 450 mm 500 mm Option 550 mm Option 600 mm Option 750 mm Option 800 mm Option 850 mm Option 900 mm Option 950 mm 1000 mm Construction: Internal flange External flange Electrical connection: Standard PUR cable 3-pole 1 m Option cable length in m Total resistance: Standard depends on electrical travel Selection: standard=black/bold, possible options=grey/cursive HEM I E K Kx,xx see above Resistance tolerance: ±20% W20% Independent linearity: Standard ±0,35% L0,35% Protection class: Standard IP67 - For higher quantities or on-going demand, additional options are available as described below on request For example: Cables with / without connector Special axis length and much more Page: 2 of 5

3 Technische Drawing Zeichnung Construction - intern flange: I Mechanical travel Total electrical travel Effective electrical travel Welding Sealing gasket stem Welding Case 3-pole cable PUR 1 m welding SEALING ZONE AT 250 BAR SEALING ZONE IP67 0,2 BAR Construction - extern flange: E stem Stem 3-pole cable PUR 1 m Version Flange (E) M24x1,5 thread welding Connection diagram blue yellow brown = x 2 holes Dimensions in mm A [+94 mm] Page: 3 of 5

4 Installation in cylinder Installation inside cylinder with intern flange: I Flange Version (I) Cylinder shaft Potentiometer rod Groove in cylinder shaft, for assembly of cursor, corrugated washers and snap ring No. 2 corrugated washers must be assembled in a pack so to prevent any axial movements of cursor and to allow cursor to rotate toward piston shaft OR Seal recommended: OR119 NBR-90 Snap ring Locking screw Non-magnetic spacer thickness Non-magnetic spacer thickness assembly HEM12 with screws and magnetic spacer housing size HEM12 assembly with corrugated washers and non-magnetic spacer thickness Page: 4 of 5

5 Installation in cylinder Installation inside cylinder with extern flange: E Flange Version (E) thread M24x1,5 O-Ring recommended PARKER ,29x2,62 Material NBR 90 Shore-A Compound PARKER N O-ring surface must be free of spiral or longitudinal scratches Ro 1,6μm for O-rings with NOT PULSING pressure Ro 0,8μm for O-rings with PULSING pressure O-Ring recommended PARKER ,29x2,62 Material NBR 90 Shore-A Compound PARKER N Page: 5 of 5