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Set of technical means for radioisotopic thickness measuring assemblies KTS-RT

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SET OF TECHNICAL MEANS FOR RADIOISOTOPIC THICKNESS MEASURING ASSEMBLIES KTS-RT

PURPOSE

          Building and update of radioisotopic thickness gauges.

APPLICATION

          Noncontact measuring of thickness of various items and materials. The set is intended for application as part of thickness measuring assemblies with a Cs-137 based radioisotopic source.

PRACTICAL USAGE

          KTS-RT was used to build two thickness measuring assemblies for measurement of wall thickness of pipes rolled at pilger mills at Seversk Pipe Plant.

COMPONENTS

  • UDS-GT Plastic scintillator based gamma detecting device;
  • BIT-01 Thickness measuring assembly indication unit;
  • USP-25 Communication and power supply device.
UDS-GT provides:
  • Registration of gamma radiation with its conversion into pulses with pulse repetition rate of up to 6 million cps;
  • Count of registered pulses for the set time intervals (with a possibility to set different count intervals) and output of the values received via RS-485 interface to BIT-01;
  • Measurement of temperature inside the detecting unit case and transmission of its value to BIT-01;
  • Automatic stabilization of the detecting unit parameters to ensure the set accuracy and conversion of gamma radiation level.
BIT-01 provides:
  • Indication of the current estimated thickness of the measured material, temperature inside the detecting unit (UDS-GT), locking signals, self test results, values of the set parameters;
  • RS-232/RS-485 conversion;
  • Possibility to calibrate conversion of the radiation level into the thickness of the measured materials;
  • Data exchange with external computers;
  • Controlling of data output to display;
  • Receipt of external controlling signals.
USP-25 provides:
  • Power supply of the UDS-GT, BIT-01 units, from industrial AC line 220 V 50 Hz;
  • Conversion of RS-232/RS-485 interfaces to link UDS-GT and BIT-01.

BASIC SPECIFICATIONS

          The accuracy of the thickness measurement depends on the characteristics of the radiation source used. For example, at the Seversk Pipe Plant, the assembly with a Cs-137 collimated radioisotopic source of 13.6 Ci activity ensures measurement of steel pipes wall thickness during pipe-rolling with accuracy not worse than 0.5% with the total thickness of wall varying from 10 to 60 mm.

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