2.5 64 mm SM1 Linear Position to 25 inches (635 mm) Fits In Tight Spaces Handy Mounting Bracket Polycarbonate Enclosure Free Release Tolerant In Stock for Quick Delivery SPECIFICATIONS Available Stroke Ranges 2.375, 7.5, 12.5, 25 inches Output Signal voltage divider (potentiometric) Accuracy .25% to 1% FS. (see ordering info) Repeatability .05% FS. Resolution essentially infinite Measuring Cable .014-inch dia. nylon-coated stainless steel Maximum Acceleration 15 g (retraction) Measuring Cable Tension 5.1 oz. (1,4 N) 30% Sensor plastic-hybrid precision potentiometer Input Resistance 10K ohms, 10% Power Rating, Watts 2.0 at 70F derated to 0 at 250 Max Input Voltage 30 V (recommended) Sensitivity 940 40 mV/V FS 1.7 43 mm 1.3 31 mm Cycle Life see ordering information Electrical Connection solder terminals, directly to potentiometer With its ultra compact design the SM1 is the per- Enclosure glass-filled polycarbonate fect solution when tight space is an issue. At just Environmental IP 50 a little over an inch across, this miniature stringpot Operating Temperature 0 to 160 F (-18 to 70 C) offers full stroke measurement ranges from 2.4 to Weight (not including bracket) 3 oz (90 g) 25 inches. A precision plastic hybrid 10K-ohm po- tentiometer delivers a precise voltage divider out- put signal that is linearly proportional to the travel ORDERING INFORMATION of the spring-loaded measuring cable. full stroke accuracy Order No. range (% of f.s.) cycle life Constructed with a rugged polycarbonate enclo- 2.375 in 1.00% 2.5M cycles SM1-2 (60 mm) sure and free-release tolerant, the SM1 is the per- fect solution for the OEM and single piece user 7.5 in 500K cycles 0.25% SM1-7 (191 mm) alike. 12.5 in 500K cycles 0.25% SM1-12 (318 mm) includes sensor, Output Signal: & standard 25 in mounting bracket. 0.25% 250K cycles SM1-25 (635 mm) +in Optional Universal Mounting Bracket 10k Available as an optional accessory, V (+out) this universal-style mounting bracket common +out replaces the standard bracket to give (0% fs.) (100% fs.) added mounting flexibility. cable extension spring loaded Its easy to install and the mounting kit cable reel comes with the bracket and all of the screws needed to attach it to the sen- sor. 9604300-0000 See fig. 3 below for further details. SENSOR SOLUTIONS /// SM1 PAGE 11.19 30,2 SM1 Miniature String Pot Voltage Divider Output S(2) CCW(1) CW(3) +in (cw/3) +out common (s/2) (ccw/1) Fig. 1 - Outline Drawing (w/o mounting bracket): eyelet detail .191 4,19 * .375 9,52 ** .53 13,3 .165 4,19 ** 0.94 23,8 0.54 13,8 *tolerance = +.005 .001 +.13 .03 1.13 28,7 **tolerance = +.005 .005 +.13 .13 see detail .61 15,4 38 mounting holes 3x .076 1,93 thru .23 5.9 on 1.22 31,0 B.C. 1.72 43,6 90 apart max. INCHES MM SENSOR SOLUTIONS /// SM1 PAGE 2 Electrical Connection: 1.85 46,9 1.23 31,2