Mirion Technologies DLK 250 User Manual
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radiation monitoring
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A Mirion Technologies Division
DLK 250
Neutron Flux Instrumentation
DLK 250
Digital Power Distribution Channel
The DLK 250 digital power distribution channel forms
part of the proTK™ product line. It has been desig-
ned for local neutron ux distribution monitoring in
the power range in combination with self powered
neutron detectors. Hardware and software of the DLK
250 are designed and quali ed for applications at the
level of the reactor protection system.
APPLICATIONS
• Operational process monitoring
○ Safety related signal processing for neutron ux
distribution monitoring in the power range of
pressurized water reactors and research reactors
RELATED PRODUCTS
• Self-powered neutron detectors: e.g. WL 23215
• Digital signal processing channels: e.g. for wide
range or power range monitoring
FEATURES
● Three or six signal paths per channel
● Input currents of 1μA with differential ampli er
● Suppression of uctuations combined with short
response time
● Digital calibration and offset compensation
● Calculation of the mean value and generation of a
substitute signal for a faulty detector
● Remote test signals for the inputs and simulation of the
output signals
● Digital adjustable parameters, lockable and non volatile
● RS232/485 data interface for calibration and data
transfer
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) SA
Route d’Eyguières
FR-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T +1 770 432 2744
F +1 770 432 9179
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T +49 (0) 89515 13-0
F +49 (0) 89515 13 169
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T +86 21 6180 6920
F +86 21 6180 6924
DLK 250
Neutron Flux Instrumentation
www.mirion.com
144968EN-C
DETECTORS AND INPUT SIGNALS
● In-core self-powered neutron detectors
● Signal cables to DLK 250: two coaxial cables per
detector, no limitation of length
● Detector supply: not needed
● Measuring range for the input current: 0,1 μA ... 1 μA
for full scale
● Option: integrated transmitter for monitoring the fuel
output temperature
DIGITAL SIGNAL PROCESSING
● 80C31/32 multi-processor system
● Program memory: EPROM
● Parameter memory: CMOS-RAM with integrated
Li-battery
● Data interface: RS232 and/or RS485
● Internal LC-display: 2 x 16 characters
FILTER ALGORITHM
● Digital lter for the suppression of signal uctuations
● Low pass lter 1st order with tolerance-intervall-com-
parator for fast signal response
● Signal lter with adjustable time constant truly follow-
ing the mean value in the tolerance intervall ± ∆
● Immediate step response in the range 0...1-∆
● Simple and rugged algorithm
OUTPUT SIGNALS
● Neutron ux for each detector position and average
neutron ux signal
● Calibrated to reactor power, e.g. 0 ... 125 %Pn
● Substitute signal for a faulty detector
● Analog outputs: 0/4 ... 20mA/600 Ω, insulated
● Binary outputs: insulated relay change overs,
60V/0.5A or 125V/1A
OTHER CHARACTERISTICS
● DC power supply: 18 ... 33 VDC, approx. 1.6A at 24 V
● Optional: AC power supply: 230 VAC or 115 VAC
+10%/-15%, approx. 40 VA
● Operating temperature: 0 ... 70°C (32 ... 158°F)
for the main electronics
● Mechanical vibrations: < 5 g, 5 ... 100 Hz
● 19” modular system according to IEC 60297
● Rack size (W×H×D): 483 mm × 133 mm × 280 mm
(19 in x 5.2 in x 11 in)
● Plug-in boards: 100 mm × 160 mm (3.9 in x 6.3 in)
DLK 250
front view
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