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Radiation detected
Range
Detector
Accuracy
Display
Time Constant
Calibration Accuracy :
Calibration Stability
Alarm range
Alarm System
Condition
Normal
Abnormal (Active)
On acknowledgement
after being abnormal
Reset after returning to Normal
Monitor Enclosure
Mounting
Data Storage
Self-Diagnostics
Power
Environment
Front panel keypad
SPECIFICATIONS
:
X – ray & Gamma Radiation
:
0.1 mR/hr to 100 mR/hr
:
Halogen quenched GM tube LND712
:
+/-10% Full scale
Auto – ranging direct reading, 6 digit 7 segment LED display & 16x2 LCD display.
:
6 x 7 segment display is interfaced using multiplexed display driver IC & used
for display of dose-rate information. 16x2 LCD for visualization of preset alarm
& other parameters.
:
Time constant varies continuously from 16 sec to 0.5 sec depending upon
countrate
+/-10% throughout the range
:
Better than +/-10% over a period of six months
:
0.1 mR/hr to 99.9 mR/hr
Alarm setting accuracy & stability
Better than +/-10% over a period of six months
:
a. Alarm indication is by flashing Red (LED) large area window display and
Loud audio alarm
b. Distinctive EHT / Detector failure alarm
c. The instrument has alarm acknowledgement and Reset switches on front
panel
d. Provision for remote alarm acknowledge and reset
e. Alarm annunciation scheme: as tabulated below
:
Vapour-tight, rugged & elegant. The instrument can be offered with compliance
to required IP standards.
:
Monitor is wall-mountable type.
:
Microcontroller has on-chip EEPROM to store the preset alarm levels and other
settings.
:
The monitor has built-in self-diagnostics. On being powered it performs tests to
check for the High voltage supply, Detector and pulse processing electronics .
:
230 VAC +/-10%, 50 Hz, single-phase supply.
:
The instrument will be able to withstand temperature upto 60 deg C and relative
humidity upto 90% in radiation areas.
:
Keypad provided on Front Panel facilitates user to configure & program the Area
Monitor (deactivated by internal jumper selection).
CHAPTER - III
Visual indication
(Red LED)
OFF
Flashing
Steady Red
OFF
3
Audio
OFF
ON
OFF
OFF
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