SP2 Compact String Pot * Voltage Divider Output Linear Position to 50 inches (1270 mm) Low-Cost, Long Life * Rugged Polycarbonate Enclosure 40-in. Electrical Cable * Free-Release Tolerant In Stock for Quick Delivery! full stroke range accuracy (% of f.s.) cycle life SP2-4 SP2-12 SP2-25 SP2-50 4.75 in (120 mm) 1.00% 2.5M cycles 12.5 in (317 mm) 0.25% 500K cycles 25 in (635 mm) 0.25% 500K cycles 50 in (1270 mm) 0.25% 250K cycles 3.5" [89 mm] includes sensor & mounting bracket. Part No. 1.9" [48 mm] COMPLETE SPECIFICATIONS Full Stroke Range Options 0-4.75, 0-12.5, 0-25, 0-50 inches Output Signal voltage divider (potentiometer) Accuracy 0.25 to 1.00% (see part no. above) Repeatability 0.05% full stroke Resolution essentially infinite Measuring Cable 0.019-in. dia. nylon-coated stainless steel Measuring Cable Tension 7 oz. (1,9 N) 25% Maximum Cable Acceleration 15 g Enclosure Material polycarbonate Sensor plastic-hybrid precision potentiometer Weight 5 oz. (w/o mounting bracket) max. ELECTRICAL Input Resistance 10K ohms, 10% Power Rating, Watts The SP2 String Pot from Celesco is a compact, economical and water resistant device that utilizes a flexible cable, a spring-loaded spool and a potentiometer to detect and measure linear position. The SP2 is identical to the SP1 except for an added 40-inch electrical cable with a watertight rubber strain relief. The SP2 has been compactly designed for tight spaces and high cycle applications and generously allows for measuring cable misalignment. With 4 different ranges and a handy mounting bracket, the SP2 is a perfect solution for many applications from light industrial to OEM. Output Signal: +in 2.0 at 70F derated to 0 at 250 Recommended Maximum Input Voltage 30 V (AC/DC) Output Signal Change Over Full Stroke Range 94% 4% of input voltage Electrical Connection 1.9" [48 mm] V(+out) 40-inch long, 24 guage shielded electical cable (0% fs.) (100% fs.) common +out ENVIRONMENTAL Enclosure IP 50 Operating Temperature Vibration 0 to 160F (-18 to 71C) up to 10 g to 2000 Hz maximum 20630 Plummer Street * Chatsworth, CA 91311 tel: 800.423.5483 * +1.818.701.2750 * fax: +1.818.701.2799 meas-spec.com SP2 | 1 Mounting Options: Electrical Connection: For added flexibilty, mounting bracket can easily be switched to the opposite side. +in (red) +out common (green) (black) To change measuring cable direction simply remove the 3 bracket attaching screws and rotate sensor body to desired direction. 2.50 [63,5] .57 [14,5] 2.50 [63,5] 1.63 [41,4] .48 [12,2] CL CL 1.45 [36,8] CL Outline Drawing (w/o bracket): O.191 [4,19]* .165 [4,2] O.375 [9,52]** .165 [4,19]** see detail eyelet detail 0.69 [17,5] Electrical Cable, 24 GA, 3-conductor, shielded, 40 in. [1 meter] long O .53 [13,5] 1.56 [39,6] 2.50 [63,5] 0.61 [15,5] 1.63 [41,4] O .125 [3,18] thru (O 2.30 [58,4] B.C. 90 apart) 0.24 [6,1] 1.63 [41,4] 2.00 [50,8] max. DIMENSIONS ARE IN INCHES [MM] tolerances are 0.04 IN. [1,0 MM] unless otherwise noted. 1.10 [27,9] 1.90 [48,3] * tolerance = +.005 -.001 [+0,1 -0,0] ** tolerance = +.005 -.005 [+0,1 -0,1] tel: 800.423.5483 * +1.818.701.2750 * fax: +1.818.701.2799 meas-spec.com 2 | SP2 Outline Drawing (with bracket): O.191 [4,19]* 1.40 [35,6] O.375 [9,52]** .165 [4,19]** eyelet detail .38 [9,7] mounting holes O.144 [3,7] (2 plcs) .78 [19,9] .57 [14,5] CL 2.50 [63,5] see detail 2.00 [50,8] .80 [20,3] DIMENSIONS ARE IN INCHES [MM] tolerances are 0.04 IN. [1,0 MM] unless otherwise noted. 1.05 [26,7] 1.90 [48,3] * tolerance = +.005 -.001 [+0,1 -0,0] ** tolerance = +.005 -.005 [+0,1 -0,1] version: 6.0 last updated: February 26, 2013 tel: 800.423.5483 * +1.818.701.2750 * fax: +1.818.701.2799 meas-spec.com SP2 | 3 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TE Connectivity: SP21534-2 SP2-12 SP2-25 SP2-50