GRAD19 series
Radiation Resistant Spring-loaded LVDT

Features

  • Range: ±3~±50mm
  • The total dose of radiation resistance > 500kGy,(5*10^7 Rad)
  • High temperature resistance 200°C
  • Spring-loaded
  • Linearity: ≤±0.25% (FS)
  • Aviation connector
  • Protection Rating: IEC IP-68

Applications

  • Nuclear fuel assembly poolside inspection
  • particle accelerator
  • Nuclear-grade valve position feedback
  • Nuclear Power
  • Nuclear medicine
  • Superconducting proton accelerator
  • Applications in harsh environments

ABEK SENSORS introduces the GRAD19 series of high temperature rebound LVDT position sensors that are resistant to nuclear radiation, which are suitable for displacement measuring applications in the presence of nuclear radiation exposure, such as nuclear fuel assembly pool side inspection, nuclear valve position feedback, superconducting proton accelerator, particle accelerator collimator, etc. The GRAD19 series is produced with special materials and processes, and can work normally at the total irradiation dose of 500kGy (5*10^7 Rad), and the irradiation test of higher irradiation dose is ongoing. The series can also continue to work stably at a high temperature of 200°C.

The GRAD19 series of LVDT position sensors consists of a rebound shaft that operates inside a precision sleeve bearing and is connected to an LVDT core. Due to the precision sleeve bearings, measurements can be carried out with repeatability of 0.6 microns or less.

The GRAD19 series of position sensors are available in measuring ranges from 2.5mm to 100 mm. It has the characteristics of high resolution, good repeatability, and low latency.

The GRAD19 series has a variety of specifications, in addition to the options already provided in the below table, it can also be customized according to customer requirements in many options, including 50m depth of water resistance, thread specifications, cable outlets, joint types and many other mechanical requirements.

In order to facilitate customer's application, we also supply a variety of accessories to match the sensor, the related mounting fixtures, signal processing equipment, cables and other accessories, please contact us for details.

Electric Specifications

ParametersDescription
Input Voltage:1-12V AC, 3V rms (nominal)
Input Frequency:  400 to 10k Hz,2.5 kHz(rms)
Linearity Error: <±0.25% (Full stroke)
Repeatability Error: <0.01%  (Full stroke)
Hysteresis Error: <0.01%(Full strokel)
Operating Temperature: -55℃ to +200℃
Thermal Coefficient-0.02%/°C (nominal)
Vibration: 20 g, 2 K Hz

Dimensions

Wiring Connection

ParametersModelGRAD19-000625GRAD19-001325GRAD19-002525GRAD19-005025GRAD19-010025
Rangemm±3±6.5±12.5±25±50
Dimensions "A"mm136.7154.7280.7344.4534.3
Dimensions "B"mm108126242.7280.7413.6
Dimensions "C"mm6886155193279
SensitivitymV/V/mm9080252415
Primary ImpedanceΩ≥325≥1400≥1200≥1250≥2150

Specialized Accessories

LVDT/RVDT Signal Conditioner

Mounting Block

Connector & Cable

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