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EchoPro
Pulse Radar Solids Level Transmitter
LR41
Application
The intrinsically safe 26 GHz. pulse radar transmitter provides
continuous level measurement up to 229.7’ (70m) with a 4-20
mA analog and HART digital signal output, and is configured via
its integral push button display module or HART communicator.
The non-contact solids level sensor is intended for dry solid
media including aggregates, grains, pellets, powders and building
materials. Select this sensor for challenging process conditions
with moderate to significant dust, and installation with an
adjustable gimbal flange or mounting bracket. Typical applications
include silos, stockpiles, transfer stations and crushers.
Features
Rugged 316L stainless steel antenna and process mount
Configuration via push button display or HART communicator
Gimbal flange for easy positioning with the angle of repose
Antenna air-purge for use with significant dust conditions
LCD displays level in feet or meters with percent of span bar
Optional display mode indicates the echo signal return curve
Fail-safe diagnostics with selectable signal fail-safe outputs
PTFE antenna cover for use with moderate dust conditions
Recognition, storage and rejection of false echo signal returns
IP67 stainless enclosure with polycarbonate display window
LR41-5321-44-00
Shown
LR97-S006
Bracket
Antenna Selection
The sensor is offered in a 4” (98mm) antenna with
or without a dust shield. The larger the antenna,
the narrower the beam and the stronger the RF
signal return. To select the appropriate antenna
size and configuration, consider two variables; The
measured span distance and the amount of dust
within the span. As for dust, when minimal, select
the horn only. When moderate, select the horn with
dust shield, and when significant, select the horn
only and apply a periodic compressed air purge.
PTFE
Dust
Shield
© 2019 Flowline | 10500 Humbolt Street, Los Alamitos, CA 90720 USA p 562.598.3015 f 562.431.8507 w flowline.com DS301930 REV A4
Push Button
Display Module
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EchoPro
Pulse Radar Solids Level Transmitter
Range:
Frequency:
Accuracy:
Dead band:
Beam angle:
Configuration:
Memory:
Display type:
Display units:
Display bar:
Display graph:
Supply voltage:
Max. consumption:
Signal output:
Signal invert:
Signal fail-safe:
Process temp.:
Temp. comp.:
Storage temp.:
Pressure:
Enclosure rating:
Encl. material:
Encl. window mat.:
Conduit entrance:
Antenna material:
Air purge fitting:
Process mount:
Classification:
Approvals:
Certification:
Compliance:
12” to 229.7’ (30cm to 70m)
26 GHz.
± 15mm
12” (30cm)
-5_21-4: 8º
Push button, HART 7
Non-volatile
LCD, dot matrix
Feet and meters
Percent of span
Echo signal curve
21.6 to 26.4 VDC
22.5 mA
4-20 mA, two-wire, HART 7
4-20 mA, 20-4 mA
3.9 mA, 20.5 mA, 22 mA
F: -40º to 752º
C: -40º to 400º
Automatic
F: -40º to 176º
C: -40º to 80º
Atmospheric
IP67
316L stainless steel w/silicone gasket
Polycarbonate
(1) 1/2” NPT connector
-5_21-4_-00: 316L
-5_21-A_-00: 316L & PTFE
1/4” (6.3mm) I.D. tubing
-_0: 1 1/2” NPT
-_4: 4” gimbal flange (ANSI)
Intrinsically safe
ATEX IIG Ex ia II C T6...T3 Ga
IEC Ex ia IIC T6...T3 Ga
CSA Class I, Div 1, Groups A, B, C & D;
Class II, Div 1, Groups E, F & G; (T6...T3);
Class I Zone 0 AEx ia IIC (T6...T3) Ga &
Zone 20 AEx ia IIIC (T76ºC to T146ºC) Da;
Ex ia IIC (T6...T3) Ga & Ex ia IIIC (T76ºC to
T146ºC) Ga
FCC
CE, RoHS
LR41
DimensionsSpecifications
TH RE AD
-40 & -A0
P/N
4” (98mm)
X
11.34” (288mm)
Y
FLANGE
-44 & -A4
P/N
4” ANSI
A
8.7” (220mm)
B
0.45” (11mm)
C
4” (98mm)
X
11.34” (288mm)
Y
6.75" (171.4mm)
4.0" (101.6mm)
Y
3.5" (88.9mm)
B
X
½"
NPT
Air purge
connector
A
3.5" (88.9mm)
½"
NPT
5.38" (136.5mm)
C
1.4"
(35.6mm)
0.85" (21.5mm)
Y
X
2.25"
(57.2mm)
Air purge
connector
Ordering
LR41-5 21- -00
MOUNT T YPE (1)
0 NPT thread
3 ANSI flange
ANTENNA SIZE (2)
4 4” (98mm) horn
A 4” (98mm) horn with dust shield
MOUNT SIZE (3)
0 1 1/2” NPT
4 4” gimbal flange
© 2019 Flowline | 10500 Humbolt Street, Los Alamitos, CA 90720 USA p 562.598.3015 f 562.431.8507 w flowline.com DS301930 REV A4
NOTES
If you want help in selecting a sensor for your application, please go
1)
to our website and submit a Level Questionnaire. An engineer will
review your requirements and suggest a product solution via email.
The 0 mount size is compatible with the 0 mount type. The 4 mount
2)
size are compatible with the 3 mount type.
For bracket mount installations, order the 0 mount type, 0 mount size
3)
and purchase a LR97-S006 mounting bracket.
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