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The DAK 250 digital start-up channel consists of either the DAK 250i for pulse range (BF3, B10-counters or fission chambers) or the DAK 250g for the intermediate range (ionization chambers) which has linear or logarithmic output signals and a reactor period signal with an optional module for reactivity calculation. The DAK 250 channel is also used for steam generator leak monitoring (N16).
The DGK 250 power range channel uses linear signal processing and numeric calibration of one or two signal paths in PWR reactors and is used with a boron-coated neutron ionization chamber. In research reactors, the DGK 250 channel can use either/or uncompensated/compensated ion chambers and options include a peak pulse processor.
The DWK 250 digital wide-range channel in combination with the TKV 23 wide-range preamplifier (50 ohm or 75 ohm) provide a combination of pulse and Campbell (RMS) processing signals together with in-core (BWR) or ex-core (PWR) fission chambers that have pulse, intermediate and wide-range neutron flux and reactor period signals.
The Model NPA-2019 unit is an Ion Chamber Amplifier designed for use in a nuclear power reactor. The device consists of a log and linear amplifier, a rate amplifier, buffer amplifiers, alarm trips, and a high-voltage tel/-tale circuit, aI/ housed in a nuclear safety qualified drawer. It is designed to mount in a standard 483 mm (19") mounting rack.