WRM 501™

Wide Range Monitor

Wide range monitor used with fission chamber for ex-core neutron flux monitoring in the start-up range.

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Data Sheet

Features

Data Sheet

Qualified to perform safety functions
Seismic qualification
Available with fission chambers of various sensitivities
High longevity due to the robustness of fission chambers
LOCA proof fission chambers are available
Wide measurement range (combined pulse + Campbell (AC) mode) up to 12 decades
Signal filtering with adaptive time constant
Calibration to neutron flux signal or reactor power (nv, %FP)
Calculation of the relative flux change rate (reciprocal of the reactor period) or rate of change of reactor power (in decade/min)
Linear and/or logarithmic analog outputs
Generation of analog and binary outputs for the reactor protection system
Built in test signal generators (remote activation possible)

Description

The wide range WRM 501 monitor forms part of the digital Neutron Flux Monitoring Systems (NFMS) proTK™ product line. It is used, in combination with fission chamber, for ex-core neutron flux monitoring in the start-up range.

The associated DWK 250™ processing unit has been designed and is qualified (in hardware and software). It provides functions that can be used at the level of the reactor protection system.

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