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Product Groups
Digital Gaging Probes for Linear Displacement Measurement
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • Absolute Measurement
  • Integrated Probe and Electronics
  • Resolution to 0.06 Microns (1.5 µin)
  • Rugged Design for Harsh Environments
 Manuals (contact with email : [email protected])


trodeks's GP901 series digital gaging probes are a refinement of the LVDT, making use of a proven mechanical design and robust construction. In a digital gage probe, the coil forms part of a frequency-sensitive circuit. As the core moves, the inductance of the coil changes, causing a change in the frequency. By comparing frequencies, the user can determine the movement of the core. Each digital probe is calibrated on a laser interferometer in a controlled environment, giving improved linearity over the full stroke compared with LVDTs. Signal conditioning and an A/D converter are contained in an in-line probe electronics assembly. The electronics assembly provides a digital signal which is compatible with the DR601 display or the LDN232 RS-232 adaptor (see below).

  GP901-1-X: ±0.24 microns ±K x 1.0 micron
  GP901-2-X: ±0.24 microns ±K x 1.0 micron
  GP901-5-X: ±0.64 microns ±K x 2.0 micron
   GP901-10-X: ±1.20 microns ±K x 2.0 micron
(K = the difference between component range and setting master)
Operating Temp:
   Probe: 0 to 80°C (32 to 176°F)
   Electronics Assembly: 0 to 60°C (32 to 140°F)
Storage Temp: 0 to 80°C (32 to 176°F)
Calibration Temp: 20°C (68°F)
Environmental Rating: IP65
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