Datasheet

KRIL
LEVEL/INTERFACE MEASUREMENT SYSTEM
Introduction
Thermo is pleased to introduce
the next generation interface level
gauge, the Kay-Ray Interface Level
Gauge (KRIL). Based on the industry
standard Kay-Ray Model 4160, the
KRIL incorporates new
and innovative ideas based on customer
input.
Many level systems have been used in
hazardous outdoor environments to measure process variables, including mechanical probes which are in contact with the
process, contacting gamma systems, and
non-contacting gamma systems. Too
often, however, environmental and
process-induced factors have reduced the
reliability and shortened the life of these
types of level measurements.
The KRIL gauge
answers this demand for a rugged, reliable, non-contacting level/interface system.
Principles of Operation
A neutron source mounted in the sensor
housing directs fast (high energy) neutrons through the essentially transparent
steel vessel walls into the vessel interior.
If hydrogen bearing material is present,
the fast neutrons are converted into slow
(low energy) neutrons which are scattered
back to the neutron sensor in direct proportion to hydrogen density. The detectors’ interface electronics receive and
condition the sensor signal and communicate to the transmitter, which provides a
visual indication and an isolated 4-20 mA
output representing the level of interface
within the vessel.
Improved Design:
The design of the KRIL
is based on real customer input.
Features and Benefits
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Non-invasive, non-contacting means little
maintenance and no unnecessary downtime.
Non-contacting measurement is unaffected by
temperature, pressure, viscosity, corrosives and
abrasives.
Separate field-wiring compartment, two (2)
poured conduit seals, improved sensor access
panel and o-ring seal eliminates moisture ingress
into sensor and electronics
Neutron backscatter principle allows measurements through thick-walled vessels of any diameter.
HART communications and English language
menu allow for easy setup and calibration.
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Digital communication between sensor and
transmitter provide increased accuracy and
stability.
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Continuous self-diagnostics provide instant
check of system integrity.
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Quick response provides rapid indication of
process changes with an advanced detection
technique which indicates vapors, foam, liquids
and solids.
Continued on reverse
Kay-Ray Interface Level
field-wiring compartment isolated
from the electronics by using two
(2) poured conduit seals. For
improved measurement stability,
a digital signal replaces the small
current signal between the sensor and transmitter. Coaxial cable
is replaced with simple 3-conductor twisted cable with shield. The
sensor access panel is modified
to fully enclose the o-ring seal
completely eliminating the potential for moisture penetration.
Applications
A broad range of industrial
processes--petrochemical, chemical refineries, pulp and paper
and metal processing--lend themselves to a non-intrusive measurement approach.
Refinery
w Coke drum level--provides
operators with reliable foam
and coke level information.
Avoid foam over and
simultaneously increase
coke drum output per cycle,
while decreasing coke drum
outages.
w Vacuum tower draw-off
tray--measures distillate
level.
w Amine contractor packed
column--measures and
allows control of foaming.
Petrochemical
w Linear reaction
polyethylene applications-measures pellet
concentrations over a
narrow span.
w Interfaces--determines
emulsion level between
different petrochemicals.
4160
02/02
SpecificationsThe gauge includes a separateSensor:
M Transmitter (Model 1400A):
Construction:
w Rugged welded steel with chemicalresistant epoxy paint.
System Architecture:
w Multiprocessor based electronics means uninterrupted output
during data entry and system interrogation
w Surface mount technology provides high degree of reliability
w All user data doubly stored in non-volatile memory with no
battery backup required
Approvals:
w FMRC approved for use in Class 1, Div. 2, Groups A, B, C, D;
Class II Div. 2, Groups F, G; Class III, Div. 2; NEMA 4X
w CSA approved as above plus Class II, Div. 2, Group E;
ENCL. TYPE 4X
Display:
w Four-line backlit display; easy-to-use setup menus;
displays up to eight readouts simultaneously
Current Outputs:
w 4 to 20 mA isolated self-powered or loop-powered into
800 ohms, field scalable
w One (1) current output standard
w Up to three current outputs available each representing
independent span channels
Contact Closure Outputs:
w Up to 4 - 115 VAC / 28 VDC SPDT @
10 amps (230 VAC SPDT @ 8 amps)
Inputs:
w Dry contact closure
Programming Options:
w Menu-driven direct key-pad entry
w HART Smart Model 375 communicator
Used to set up and calibrate
gauge, and to enter data.
Communicates with the KRIL
system via the current
loop. BEL202FSK standard.
Environmental
Protection/Reliability:
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Separate field-wiring compartment
facilitates wiring without exposing
electronics to the ambient environment.
w Two (2) poured conduit seals further
isolate the field-wiring compartment
from electronics and sensor to eliminate moisture ingress.
w Redesigned sensor access panel
includes fully encased o-ring seal to
eliminate moisture ingress into sensor
cavity and environmental degradation
of o-ring.
w Index of Protection (IEC) 65
Power Requirements:
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115/230 VAC + 10%; 50/60Hz.
362 VA
w Optional -50° C feature requires an
additional 100 VA
Surface Radiation:
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Less than 30 mR/hr. Meets
applicable international and
NRC regulatory standards.
Source Material and Size:
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500 mCi Am-241 Be
Operating Temperature:
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-25° to 140° F (-35° to 60° C)
Optional -50° C operating temperature
available
Weight:
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220 lbs. (100 kg.)
Certifications:
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CSA and FMRC approved for:
Class I, Div. 1, Groups B, C, D
Class II, Div. 1, Groups E, F & G
Class III; TYPE 4
Class I, Div.2, Groups A, B, C & D
Temperature Code D
Optional Mounting Feature:
w Optional swing-arm assembly allows
the sensor to "swing-away" from
vessel wall allowing access to detector
electronics without dismounting the
complete sensor.
Sugar Land
Canada
1410 Gillingham Lane
Sugar Land, Texas 77478
713-272-0404 • 800-437-7979 (v)
713-272-4573 (f)
14 Gormley Industrial Avenue, Unit 4
Gormley, Ontario LOH 160
905-888-8808 (v)
905-888-8828 (f)
www.Thermo.com