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.

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 genera-

tors. Preampli ers and signal input boards have remote

operated pulse or current sources to generate precise

test signals for the input converters.

Finally (4), analog and binary output signals and the

concerning periphery like indicators, recorders or alarm

devices can be activated by numerical signal simulation,

thus the whole range of output signals is covered, fast

and precise. The test mode generates status signal of a

binary output (relay contact).

TK 250

Signal Processing

ELECTRONIC MODULES

The measuring channels of the systems TK 250 are

constructed with 19” modules. Pre-ampli ers and signal

converters for very sensitive detector signals are moun-

ted in separate boxes. There is a variety of input boards

for the pre-processing of the detector signals, e.g. pulse

discriminator NI 21... and ampli er boards NA 31... for

neutron detectors. On the output side there are isolated

buffer ampli ers NT 31 and NT 61 for analog signals and

relay bords for binary signals, e.g. NB 21. The modules

interface, supply and auxiliary functions are assembled

all around the microprocessor boards for signal acquisi-

tion NZ 21 and for signal processing NZ 12.

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

NB 21
NB 22
NB 28

NE 31
NE 32

NH 32
NH 33
NH 34
NH 36
NH 42

NI 11
NI 21
NI 22.2
NK 21.2

NN 01
NN 41
NN 43
NN 51
NN 53
NN 54

NP 31
NR 17
NR 31
NS 01

NT 31
NT 61

NZ 12
NZ 21

NV 101
NV 102
NV 320
TKV 23

Indicator unit
Pump control unit
Current input unit
Fission chamber unit
RMS input unit
Average value ampli er
SPND input unit

Binary I/O-board
Decoder board
Binary output board

Pulse outputs
Pulse shaper

High voltage supply
High voltage supply
High voltage supply
High voltage supply
High voltage supply

Standard pulse input
Pulse discriminator
Double window discriminator
Serial interface

DC supply network
24 VDC power supply
24 VDC power supply
230 VAC power supply
230 VAC power supply
230 VAC power supply

Test generator
Relay board
Relay board
Key switch board

Isolated buffer ampli er
Isolated buffer ampli er

Main processor board
I/O processor board

c/f converter
c/f converter
Pulse pre-ampli er
Wide range pre-ampli er

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 ampli er and RMS-correlator
c/v-converter 0 ... 2.5/5 mA
Differential ampli er

DEK 251
DGK 250
DSK 250
DWK 250
DMK 250
DLK 250

4 inputs, 8 relays outputs 60 V/0,5 A
4 bit to 1v16, with level shifter

DAK, DWK

8 relays outputs 125V/1A

2 insulated 50 Ω pulse buffers
Pulse ampli er, e.g. for iodine monitors DEK 251

0 ... 1 kV, 2 mA max.
0 ... 2 kV, 1 mA max.
0 ... 4 kV, 0,5 mA max.
0 ... 500 V, 4 mA max.
0 ... 800 V, 30 mA max. DWK 250

2 insulated inputs
2 integral discriminators
2 single channel discriminators

DEK 251

RS 232 or RS 485, insulated

Redundant supply & battery inputs
Output voltages: 5 V, ±15V
Output voltages: 5 V, ±15V
Output voltages: 5 V, ±15V
Output voltages: 5 V, ±15V
Output voltages: 24 VDC or 28 VDC

Test signal 0 ... 10 V/20 mA adjustable

DMK 250 ±15 V
6 relays, 2 change overs each
16 relays, 2 contacts each
2 key switches, test plugs

1 ... 4 × 0 ... 10V/0 ... 20mA
Various input/output combinations

With display and keys
2 counters, 4 analog I/Os each

0.1 pA … 0.3 μA, 800 V detector supply

0.1 pA … 1mA, various detector voltages
For neutron detectors
For wide range  ssion chambers

DAK 250

DWK 250

­24 V
±15 V
±15 V
±15 V
±15 V
±15 V

±15 V
±15 V
±15 V

±15 V
±15 V

±15 V
±15 V
±15 V
±15 V
±24 V

5 V, ±15 V
5 V
5 V, ±15 V
5 V

35 VDC max.
18 ... 32 VDC
18 ... 32 VDC
195 ... 255 VAC
195 ... 255 VAC
195 ... 255 VAC

15 or 24V
15 V
5 V

±15 V
24 ... 230 VAC/DC

5 V
5 V, ±15 V

15 ... 32 VDC
15 ... 32 VDC
±15 V
±15 V

8/12 T
8 T
4 T
4 T
4 T
4 T
4 T

4 T
4 T
4 T

4 T
4 T

8 T
8 T
8 T
8 T
14 T

4 T
0/4 T *
0/4 T *
4 T

4 T
4 T
8 T
4 T
8 T
8 T

4 T
4 T
4 T
4 T

4 T
4 T

20 T
0/4 T *

Box
Box
Box
Box

TK 250

notice: T = 2/10” = 5.08 mm

Mirion Technologies (MGPI) SA

Route d’Eyguières
FR-13113 Lamanon
France

T [phone]
F [phone]

Since norms, speci cations and designs are subject to occasional change, please ask for con rmation of the information given in this publication.

Mirion Technologies (MGPI) Inc

5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T [phone]
F [phone]

* without front panel, arranged behind NZ 12

Mirion Technologies (MGPI H&B) GmbH

Landsberger Strasse 328a
DE-80687 Munich
Germany

T [phone]
F [phone]

www.mirion.com

144879EN-C

Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch

Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T [phone]
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