User Manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
DAK 250
Neutron Flux Instrumentation
DAK 250
Digital Start-up Channel
The DAK 250 digital start-up range channel forms
part of the proTK™ product line. It has been designed
for neutron  ux monitoring in the pulse and inter-
mediate range in combination with pulse detectors,
e.g. BF3-counters and neutron ionization chambers.
Hardware and software of the DAK 250 are designed
and quali ed for applications at the level of the reac-
tor protection system.
APPLICATIONS
Operational process monitoring
Safety related signal processing for neutron  ux
monitoring in the pulse range (DAK 250-i) and
intermediate range (DAK 250-g)
RELATED PRODUCTS
Neutron detectors: e.g. BF3-counters and
ionization chambers KNK/KNU 50
Digital signal processing channels: e.g. for wide
range or power range monitoring
FEATURES
Signal  ltering with adaptive time constant
Calibration to neutron  ux signal (nv, P/Pn)
Calculation of the  ux change rate (reciprocal of the
reactor period)
Generation of analog and binary signals for the reactor
protection system
Linear and/or logarithmic analog outputs
Remote test signal generators
Optional: calculation of the reactor reactivity

Summary of content (2 pages)