Owner manual

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 [phone]
F [phone]
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T [phone]
F [phone]
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T [phone]
F [phone]
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T [phone]
F [phone]
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