SP2 | 1
tel: 800.423.5483 • +1.818.701.2750 • fax: +1.818.701.2799
20630 Plummer Street • Chatsworth, CA 91311
meas-spec.com
SP2
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!
Compact String Pot • Voltage Divider Output
3.5” [89 mm]
1.9”
[48 mm]
1.9”
[48 mm]
+in
common +out
V(+out)
(0% fs.) (100% fs.)
Output Signal:
includes
sensor &
mounting
bracket.
full stroke
range
accuracy
(% of f.s.) cycle life
SP2-4 4.75 in
(120 mm) 1.00% 2.5M cycles
SP2-25 25 in
(635 mm) 0.25% 500K cycles
SP2-12 12.5 in
(317 mm) 0.25% 500K cycles
SP2-50 50 in
(1270 mm) 0.25% 250K cycles
Part No.
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 innite
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 2.0 at 70°F 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 40-inch long, 24 guage shielded electical cable
ENVIRONMENTAL
Enclosure IP 50
Operating Temperature 0° to 160°F (-18° to 71°C)
Vibration up to 10 g to 2000 Hz maximum
The SP2 String Pot from Celesco is a compact, economi-
cal and water resistant device that utilizes a exible 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 dierent ranges and a handy
mounting bracket, the SP2 is a perfect solution for many ap-
plications from light industrial to OEM.
2 | SP2
tel: 800.423.5483 • +1.818.701.2750 • fax: +1.818.701.2799
meas-spec.com
2.50 [63,5] 2.50 [63,5] .57 [14,5]
1.45 [36,8]
.48 [12,2]
C
L C
L C
L
1.63 [41,4]
Ø .125 [3,18] thru
(Ø 2.30 [58,4] B.C. 90º apart)
1.10 [27,9]2.00 [50,8] max.
0.69 [17,5]
1.63 [41,4]
1.63 [41,4]
1.90 [48,3]
Ø .53 [13,5]
.165 [4,2]
0.61 [15,5]
2.50 [63,5]
1.56 [39,6]
Electrical Cable, 24 GA, 3-conductor,
shielded, 40 in. [1 meter] long
0.24 [6,1]
DIMENSIONS ARE IN INCHES [MM]
tolerances are 0.04 IN. [1,0 MM] unless otherwise noted.
* tolerance = +.005 –.001 [+0,1 –0,0]
** tolerance = +.005 –.005 [+0,1 –0,1]
see detail
eyelet detail
.165
[4,19]**
Ø.191 [4,19]*
Ø.375 [9,52]**
Mounting Options: Electrical Connection:
Outline Drawing (w/o bracket):
To change measuring cable direction
simply remove the 3 bracket attaching screws
and rotate sensor body to desired direction.
For added flexibilty, mounting bracket
can easily be switched to the opposite side. +in (red)
common
(black)
+out
(green)
SP2 | 3
tel: 800.423.5483 • +1.818.701.2750 • fax: +1.818.701.2799
meas-spec.com
version: 6.0 last updated: February 26, 2013
1.05
[26,7]
.80
[20,3]
.78 [19,9]
mounting holes
Ø.144 [3,7] (2 plcs)
1.40 [35,6]
.38 [9,7]
.57 [14,5]
2.00 [50,8]
2.50 [63,5]
1.90 [48,3]
C
L
see detail
.165
[4,19]**
Ø.191 [4,19]*
Ø.375 [9,52]**
eyelet detail
* tolerance = +.005 –.001 [+0,1 –0,0]
** tolerance = +.005 –.005 [+0,1 –0,1]
DIMENSIONS ARE IN INCHES [MM]
tolerances are 0.04 IN. [1,0 MM] unless otherwise noted.
Outline Drawing (with bracket):
