Mirion Technologies TK 250 User Manual

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

FEATURES

● Suitable for all types of detector signals (pulses,

DC-and AC-current)

● Up to four signal paths per rack

● Continuous self tests for hardware and software

● Remote signal generators and signal simulation

● Compatible with analogue channels

● Simple and clear operators interface

● 19” mechanical system according to IEC 60297

● Type tested according to KTA 1505 and KTA 3505

RELATED PRODUCTS

• RMS 250: radiation monitoring systems

• proTK™: neutron  ux monitoring systems

radiation monitoring
systems

A Mirion Technologies Division

Featuring:

FUNCTIONS AND

OPERATOR’S ACCESS

Signal processing has to be

adapted to the individual appli-

cation by adjustable parameters,

like time constant or calibration

factor. Additionally, all measur-

ing values may be monitored by

adjustable alarm thresholds, and

may be used for linear or loga-

rithmic output signals.

Measuring values and param-

eters are organized in two columns of the menu table.

There are other columns, one to activate all the test

procedures and another to show the status informa-

tions of the channel. The 2-line LCD and the keys of

the main processor board NZ 12 enables the access

to all positions of the menu table.

The operator has two different possiblities for the

access to system TK 250 signal processing channels,

either manual via display and function keys on the

front panel of the main processor board NZ 12 or via

the data interface with an external PC. Also during an

operator’s dialog the continuous signal processing

functions are not interrupted. Thus, without external

tools, reading of all measuring values, parameters

and status informations is possible in parallel to the

normal signal processing. Modi cations of para-

meters and activation of test procedures also may

be done on the menu table using the keys, but these

functions are locked and can be

enabled the key switches on the

board NS 01.

TK 250

Signal Processing

TEST PROCEDURES

Functional tests of TK 250 measuring channels in

connection with detectors and output periphery may

be performed on different levels with automatic or

remote operated procedures.

On the base level (1) there is a number of continu-

ous self checks of hardware and software in the

measuring channel. The goal is detecting drifts and

faults very early and verfying the original status of the

software originally type tested. The internal supply

voltage and the detector supply voltage, the detector

signal, the memory for data, parameters and pro-

gram, the data transfers on the internal S-bus, the

execution to the program and some other features

are subject of the continuous self checks. Faults will

cause an alarm status signal and the reason can be

checked in the status column of the menu table.