DPL Series — 0.5 m to 10 m · Potentiometric · Aluminum Housing
Key Specifications
DPL Series
Draw wire transducers — also known as string pots or cable transducers — measure large linear displacements by translating wire extension into a proportional voltage. A thin stainless steel wire rope is wound over a spring-loaded drum coupled to a rotary potentiometer. The housing mounts to a fixed frame; the wire attaches to the moving object.
The DPL series covers 0.5 m to 10 m in 9 standard models — ranges that would require an impractically large LVDT. The flexible wire automatically compensates for minor angular misalignment, making installation simple even where precise axial alignment is difficult.
Models
| Model | Full Stroke | Housing L × H × W (mm) | Mount Hole Spacing (mm) |
|---|---|---|---|
| Small Housing (140 × 75 × 50 mm) | |||
| 005DPL | 0.5 m | 140 × 75 × 50 | 124 |
| 010DPL | 1.0 m | 140 × 75 × 50 | 124 |
| 012DPL | 1.2 m | 140 × 75 × 50 | 124 |
| Medium Housing (220 × 150 × 125 mm) | |||
| 015DPL | 1.5 m | 220 × 150 × 125 | 204 |
| 020DPL | 2.0 m | 220 × 150 × 125 | 204 |
| 025DPL | 2.5 m | 220 × 150 × 125 | 204 |
| 030DPL | 3.0 m | 220 × 150 × 125 | 204 |
| Large Housing (256 × 185 × 160 mm) | |||
| 050DPL | 5.0 m | 256 × 185 × 160 | 240 |
| 100DPL | 10.0 m | 256 × 185 × 160 | 240 |
Model code: xxx/10 = stroke in metres (e.g. 005DPL = 0.5 m, 100DPL = 10 m). Potentiometer resistance up to 10 kΩ available on request.
Use Cases
Monitor hook and load position on overhead cranes and hoists over multi-metre travel ranges with a simple, rugged potentiometric output.
Track ram position on hydraulic presses, stamping machines, and forming equipment across 1–5 m strokes where rigid sensors cannot reach.
Measure sluice gate, flood barrier, and dam gate travel reliably. The wire compensates for minor misalignment without affecting measurement accuracy.
Position feedback on excavator arms, loader buckets, telescopic cylinders, and large industrial actuators in rugged outdoor environments.
Long-stroke settlement gauges, bridge deck displacement measurement, and retaining wall deflection monitoring on civil engineering projects.
Measure cross-head travel on large-capacity material testing machines, fatigue test rigs, and structural test frames with multi-metre strokes.
Resources
DPL Series — Draw Wire Displacement Sensor Datasheet
Complete specifications, dimensions, and ordering information (PDF)
Our sensor specialists will recommend the best displacement solution for your application.
FAQ
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