Catalogue 10 - STAUFF Hydraulic Accessories

A 16 www.stauff.com/10/en/#16 Level Gauge Type SNK Characteristics Visual / electrical fluid level indication in hydraulic reservoirs with maximum tank pressures not exceeding 2 bar / 29 PSI Nominal Sizes and Designs ƒ 6 nominal sizes from 127mm / 5.00 in to 381mm / 15.00 in ƒ Display either undivided (SNK-127 ... 176) or subdivided by strut(s) into 2 (SNK-254) or 3 sections (SNK-305 and SNK-381) Media Compatibility ƒ Suitable for use with mineral and petroleum based hydraulic fluids (HL and HLP) Materials ƒ Housing made of Aluminium, black powder-coated ƒ Sight tube and plugs made of Polyamide (PA) ƒ Float made of Polyamide (PA) ƒ Seals made of FKM (Viton®) For the individual components of the level gauge (sight glass, housing, Seals, bolts), alternative materials for improved UV or chemical resistance, low-temperature applications down to -50°C / -58 °F and use with special media (such as bio-degradable fluids, diesel oils, gasolines) are available on request. Electrical Specifications ƒ Magnetic float activates switch when fluid level drops below contact level within 60mm / 2.36 in of lower banjo bolt ƒ Available as a break contact (normally closed) or make contact (normally open) ƒ Either equipped with industrial standard connector (Types C / O) or five-pin circular connector M12 (Types CD / OD) ƒ Direction of the electrical contact box (right / left) can be chosen when assembling the electrical contacts (Types C / D) or is right by default (Types CD / OD) ƒ Contact ratings: max. 10W (Types C / CD) or 5W (Types O / OD) ƒ Switching voltage: max. 50VAC/DC ƒ Switching current: max. 0,25 A Technical Data ƒ IP 65 protection rating: Dust tight and protected against water jets (IP 67 on request) ƒ Operating temperature range: -30°C ... +80 °C / -22°F ... +176 °F ƒ Recommended tightening torque: 8N·m / 5.9ft·lb ƒ Minimum lateral distance to other magnetic components and cables: 10 mm / .39 in Accessories / Options ƒ Dial thermometers with probe and a Celsius or a dual Celsius / Fahrenheit scale with a temperature display range of up to +100 °C / +200 °F ƒ Thermo Switches ƒ Temperature Sensors ƒ Deutsch Adaptor Cable Please see pages 18 / 19 / 20 for details. Dimensions Nominal Size Dimensions (mm / in) A B1 B2 C (Max.) D E F (with T1) F (with T2) L1 L2 L3 SNK-127 56 34,5 ~50 8 35,1 51,5 157,5 257,5 205 127 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 8.07 5.00 ~2.36 SNK-150 56 34,5 ~50 8 35,1 51,5 157,5 257,5 228 150 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 8.98 5.91 ~2.36 SNK-176 56 34,5 ~50 8 35,1 51,5 157,5 257,5 254 176 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 10.00 6.93 ~2.36 SNK-254 56 34,5 ~50 8 35,1 51,5 157,5 257,5 332 254 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 13.07 10.00 ~2.36 SNK-305 56 34,5 ~50 8 35,1 51,5 157,5 257,5 383 305 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 15.08 12.00 ~2.36 SNK-381 56 34,5 ~50 8 35,1 51,5 157,5 257,5 459 381 ~60 2.20 1.36 ~1.97 .32 1.26 2.03 6.20 10.14 18.07 15 ~2.36 Connection Details and Electrical Functions Types C and O: Industrial standard connector (contact gap: 11mm / .43in), similar to DIN EN 175301-803-B / ISO 6952 Types CD and OD: Five-pin circular connector M12, A-coded, according to IEC 61076-2-101 Type C Type O Contacts close when fluid level drops below contact level Contacts open when fluid level drops below contact level A B1 L2 D C E F Dial Thermometer with Probe T1/T2 (optional) B2 L3 Contact Level Table shows dimension L1 for the version with industrial standard connector (Types C and O) only. Maximum admissible tolerance for the bolt center spacing (dimension L2) according to DIN ISO 2768-f: ±0,20mm / .008in for all nominal sizes. PG9 Connection 3 not engaged ~50 (~1.97) 28 (1.10) M12 28 (1.10) ~55 (~2.17) 25 (.98) Analog Signal 24VDC 0VDC Connection 1 not available Connection 2 not engaged f Banjo Bolt Size Metric ISO thread M12 (standard option) 12 Metric ISO thread M10 10 Unified coarse thread 1/2 – 13 UNC U1 Unified fine thread 1/2 – 20 UNF U2 Unified extra-fine thread 1/2 – 28 UNEF U3 g Thermo Switch / Temperature Sensor / Anti-Drain Valve Option Supplied without Thermo Switch / Temperature Sensor / Anti-Drain Valve - Thermo Switch TS-SNA/SNK; Break contact (normally closed); Equipped with standard connector 0 Thermo Switch TS-SNA/SNK; Break contact (normally closed); Equipped with connector M12 OD Thermo Switch TS-SNA/SNK; Make contact (normally open); Equipped with standard connector C Thermo Switch TS-SNA/SNK; Make contact (normally open); Equipped with connector M12 CD Temperature Sensor TS-SNA/SNK-PT100; Equipped with connector M12 PT100 Anti-Drain Valve Set A DA Anti-Drain Valve Set B DB Thermo Switches / Temperature Sensors only available for banjo bolt size M12. Please see pages 18 to 20 for details. h Switching Temperature Contact switches at +60°C / +140°F 60 Contact switches at +70°C / +158°F 70 Contact switches at +80°C / +176°F 80 Contact switches at +90°C / +194°F 90 Only to be indicated when using a Thermo Switch. Options T1C/CF and T2C/CF are not available for banjo bolt size M10 and not be used in conjunction with Thermo Switches or Temperature Sensors. Please see page 18 for details. Order Codes a Type Level Gauge with visual / electrical fluid level indication SNK b Nominal Size SNK-127 (nominal size of 127mm / 5.00 in) 127 SNK-150 (nominal size of 150mm / 5.91 in) 150 SNK-176 (nominal size of 176mm / 6.93 in) 176 SNK-254 (nominal size of 254mm / 10.00 in) 254 SNK-305 (nominal size of 305mm / 12.00 in) 305 SNK-381 (nominal size of 381mm / 15.00 in) 381 Contact STAUFF for alternative nominal sizes and designs. c Sealing Material FKM (Viton®) V d Electrical Function Break contact, opens at contact level (normally closed); Equipped with standard connector 0 Break contact, opens at contact level (normally closed); Equipped with connector M12 OD Make contact, closes at contact level (normally open); Equipped with standard connector C Make contact, closes at contact level (normally open); Equipped with connector M12 CD e Thermometer Option Supplied without thermometer (standard option) 0 Dial thermometer with probe (200mm / 7.87 in) and a Celsius scale up to 100°C T1C Dial thermometer with probe (300mm / 11.81 in) and a Celsius scale up to 100°C T2C Dial thermometer with probe (200mm / 7.87 in) and a dual scale up to 100°C / 200°F T1CF Dial thermometer with probe (300mm / 11.81 in) and a dual scale up to 100°C / 200°F T2CF Clearance Hole: Ø13 (Ø.51) for M12 / Ø10,5 (Ø.41) for M10 / Ø13,5 (Ø.53) for UNC, UNF, UNEF L1 ( ) +1 -4 +.039 -.157 33 (1.30 ) +1 -4 +.039 -.157 SNK - 127 - V - C - O - 12 - O - 60 Catalogue 10 § Edition 01/2024 Fluid Level and Temperature Indicators Dimensional drawings: All dimensions in mm (in).