Instruction Manual

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radiation monitoring

systems

A Mirion Technologies Division

TK 250

Signal Processing

TK 250

Digital Signal Processing System

The TK 250 digital signal processing system has been

designed for safety related applications in nuclear

measurement, e.g. radiation monitoring and neutron

 ux instrumentation. It is a modular multi-micropro-

cessor system with data interface. It is optimized for

a rugged operational behaviour and high reliability.

APPLICATIONS

• Radioprotection of workers

• Operational process monitoring

○ Dose rate monitoring and activity monitoring

according to IEC 61226 cat. B and A

○ Neutron  ux instrumentation and other functions

according to IEC 61226 cat. A

Summary of content (4 pages)

PAGE 1
TK 250 Signal Processing TK 250 Digital Signal Processing System The TK 250 digital signal processing system has been designed for safety related applications in nuclear measurement, e.g. radiation monitoring and neutron flux instrumentation. It is a modular multi-microprocessor system with data interface. It is optimized for a rugged operational behaviour and high reliability.
PAGE 2
TK 250 Signal Processing FUNCTIONS AND OPERATOR’S ACCESS Signal processing has to be adapted to the individual application by adjustable parameters, like time constant or calibration factor. Additionally, all measuring values may be monitored by adjustable alarm thresholds, and may be used for linear or logarithmic output signals. Measuring values and param- TEST PROCEDURES eters are organized in two columns of the menu table.
PAGE 3
TK 250 Signal Processing The next level (2) is the check of the complete signal path beginning at the detector up to the interface to the external periphery performed with remote check sources or with ionization chambers with internal check volume. The third level (3) is testing with electrical signal generators. Preamplifiers and signal input boards have remote operated pulse or current sources to generate precise test signals for the input converters.
PAGE 4
TK 250 Signal Processing LIST OF MODULES Type Designation Function Used For Supply Voltage Width NA 04/06 NA 07.21 NA 31 NA 32 NA 33 NA 34 NA 36 Indicator unit Pump control unit Current input unit Fission chamber unit RMS input unit Average value amplifier SPND input unit 1 or 2 analog indicators 24 × 96 mm Switches and operating hours counter c/v-converter 0 ... 10/25/50 μA Detector voltage and c/f-converter Main amplifier and RMS-correlator c/v-converter 0 ... 2.