Linear Motion Position-Measuring Transmitters
Measure the position of an object moving in a straight line. Also known as string pots, these transmitters have an extendable wire cable that measures the relative distance between two points. They convert measurements to an electrical signal for use in controlling system automation.
All are IP rated for some protection from dust. IP67-rated transmitters also seal out water when briefly submersed.
Overall | Mount. Holes | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stroke Lg. | Accuracy Range | Repeatability Range | Max. Input Voltage | Input Resistance, kOhm | Output Voltage  | Voltage Resolution | Environmental Rating | Wire Lead Lg. | Eyelet ID | Lg. | Wd. | Ht. | Ctr.-to-Ctr. | Dia. | No. of | Each | |
Style 1 | |||||||||||||||||
| 4 3/4" | -1% to +1% | -0.05% to +0.05% | 30V AC 30V DC | 10 | 28.2V AC 28.2V DC | 0.0001 mV AC 0.0001 mV DC | IP50 | 40" | 0.191" | 3.1" | 1.9" | 2.6" | (A) 1.4" | 1/8" | 2 | 000000 | 0000000 |
| 12 1/2" | -0.25% to +0.25% | -0.05% to +0.05% | 30V AC 30V DC | 10 | 28.2V AC 28.2V DC | 0.0001 mV AC 0.0001 mV DC | IP50 | 40" | 0.191" | 3.1" | 1.9" | 2.6" | (A) 1.4" | 1/8" | 2 | 000000 | 000000 |
| 25" | -0.25% to +0.25% | -0.05% to +0.05% | 30V AC 30V DC | 10 | 28.2V AC 28.2V DC | 0.0001 mV AC 0.0001 mV DC | IP50 | 40" | 0.191" | 3.1" | 1.9" | 2.6" | (A) 1.4" | 1/8" | 2 | 000000 | 000000 |
| 50" | -0.25% to +0.25% | -0.05% to +0.05% | 30V AC 30V DC | 10 | 28.2V AC 28.2V DC | 0.0001 mV AC 0.0001 mV DC | IP50 | 40" | 0.191" | 3.1" | 1.9" | 2.6" | (A) 1.4" | 1/8" | 2 | 000000 | 000000 |
Style 2 | |||||||||||||||||
| 120" | -0.35% to +0.35% | -0.05% to +0.05% | 30V AC 30V DC | 10 | 28.2V AC 28.2V DC | 0.0001 mV AC 0.0001 mV DC | IP67 | 40" | 0.191" | 2.48" | 5.2" | 5.09" | (A) 4 3/4" (B) 4.62" (C) 2.2" | 7/32" 3/16" 3/16" | 6 | 000000 | 000000 |
Linear Motion Potentiometers
Pair these potentiometers with a controller to monitor the position of moving parts or send instructions to an electrical system. They have a rod that slides back and forth against an internal resistor, which increases or decreases the voltage flowing out to your controller. To monitor the position of a moving part, such as a robotic component, connect it to the rod. As the part moves, it pushes the rod back and forth, which allows the controller to observe and report the part’s exact position. To use these potentiometers as part of a controls system, connect them to a volume slider or other manual control. When you move the slider, the controller converts its position into instructions for electrical equipment, such as adjusting volume levels. These potentiometers are also called variable output switches.
For technical drawings and 3-D models, click on a part number.
Lg. | Rod | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Wattage | Wd. | Ht. | Dia. | Thread Size | Material | Housing Material | Wire Connection Type | Environmental Rating | Each | |
5 kilohms Max. Resistance | |||||||||||||
| 5/32" | 1.59" | 1.74" | 0.125 W @ 200 V DC | 1/4" | 9/32" | 1/16" | 0-80 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 000000 |
| 1/4" | 1.59" | 1.84" | 0.125 W @ 200 V DC | 1/4" | 9/32" | 1/16" | 0-80 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 00000 |
| 1/2" | 2.22" | 2.72" | 0.25 W @ 300 V DC | 9/32" | 11/32" | 3/32" | 2-56 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 00000 |
10 kilohms Max. Resistance | |||||||||||||
| 5/32" | 1.59" | 1.74" | 0.125 W @ 200 V DC | 1/4" | 9/32" | 1/16" | 0-80 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 00000 |
| 1/4" | 1.59" | 1.84" | 0.125 W @ 200 V DC | 1/4" | 9/32" | 1/16" | 0-80 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 00000 |
| 1/2" | 2.22" | 2.72" | 0.25 W @ 300 V DC | 9/32" | 11/32" | 3/32" | 2-56 | 303 Stainless Steel | Plastic | Wire Leads | IP45 | 0000000 | 00000 |
Tie Rod-Mount Proximity Switches for Sensor-Ready Hydraulic Cylinders
Send an electronic signal to your system when the piston reaches a certain location. Mount one or two of these sensors on a cylinder tie rod; they must be flush against the cylinder tube. An LED indicator shows the piston location. These switches are PNP (also called "sourcing") output, so they send energy onwards. PNP output is most common in solid-state relays and PLCs used in the United States and Europe.
For Cylinder | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer (Series) | Body Material | For Bore Dia. | Input Voltage | Current Output, mA | Housing Material | Environment | Environmental Rating | Cable Lead Lg., ft. | Number of Wire Leads | Wire Lead Color | Includes | Each | |
| Miller (2H) | Steel | 1 1/2"-4" | 10V DC-30V DC | 100 | Plastic | Washdown | IP67 | 16 | 4 | Black, Blue, Brown, White | Mounting Bracket | 000000 | 0000000 |