KPM9 micro rod displacement sensor (also known as crack gauge, crack displacement sensor, electronic ruler, resistance ruler, potentiometer, displacement sensor) Principle: The principle of potentiometer, all sensors are position measurement type, used to adjust the system (control system) and measurement system, directly measure displacement and length, output DC voltage signal, The signal can also be converted into standard 0-5V, 0-10V, or 4-20mA DC signals through built-in or external V/A transmission modules, and control requirements can also be transmitted over long distances. KPM9 micro rod displacement sensor (also known as crack gauge, crack displacement sensor, electronic ruler, resistance ruler, potentiometer, displacement sensor) output displacement change: 0- given input working voltage (changes with displacement).
Technical parameters and installation dimensions：
| KM9 minitype | 5mm | 10mm | 15mm | 20mm-25mm | 30-55mm | Stroke Length （mm） 5 10 15 20 25 30 35 40 45 50 55 |
| Linear Precision (±%FS) | ±0.1% | |||||
| Resistance (±10%) | 2ΚΩ | 5KΩ | ||||
| Effective Stroke | range+3mm | |||||
| Resolution | Infinite | |||||
| Repeatability Precision | 0.01mm | |||||
| Temperature Coefficient | ≤1.5ppm/℃ | |||||
| Recommended Current | ≤1mA | |||||
| Input Voltage | (4ΚΩ~5ΚΩ): ≤24VDC;(2ΚΩ~3ΚΩ)≤12VDC；（1KΩ）≤5VDC | |||||
| Output | 0~ × input voltage (change with the movement of the rod) | |||||
| Sensitivity | 1 | |||||
| Temperature Drift | infinitesimal | |||||
| Load Characteristic | ≥10mA | |||||
| Very long life | >100*1000000 cycles,>2*1000000 m | |||||
KPM9 Signal Output：
Resistance output type (potentiometer): 5k Ω, 2K Ω,
Voltage output type (external/internal module): 0-5V, 0-10V,
Current output type (external/internal module): 4-20MA (two wire, three wire),
Digital signal (external/internal module): RS485.
KPM9 Application Field：
Crack measurement monitoring, bridge measurement monitoring, shoe machines, 3D seats, prestressed jacks, robotic arms, robots, extractors, brick machines, ceramic machinery, water gate control, woodworking machinery, hydraulic machinery, etc.