EchoPro®
Intrinsically Safe Radar Level Transmitter
LR36, LR41 & LR46 Series Manual
Flowline, Inc. | 10500 Humbolt Street, Los Alamitos, CA 90720 p 562.598.3015 f 562.431.8507 w flowline.com MN301905 Rev A
Introduction / Table of Contents Step One
TABLE OF CONTENTS Page
Section One | Introduction: ............................................................................................................................... 2
Table of Contents: .................................................................................................................................... 2
Sensor Models: ........................................................................................................................................ 5
Operating Principle: ................................................................................................................................. 6
Features: .................................................................................................................................................. 6
Benefits: ................................................................................................................................................... 6
Limitations: ............................................................................................................................................... 6
Specifications: .......................................................................................................................................... 7
Intrinsically Safe Control Drawing: .......................................................................................................... 11
Labels for Intrinsic Safety: ....................................................................................................................... 12
Dimensions: ........................................................................................................................................... 13
Safety Precautions: ................................................................................................................................ 15
Section Two | Getting Started: ........................................................................................................................ 16
Setup Overview: ..................................................................................................................................... 16
Part Number: .......................................................................................................................................... 18
Section Three | Install Sensor: ....................................................................................................................... 20
Installation Requirements: ..................................................................................................................... 20
FCC Conformity: ..................................................................................................................................... 21
LR36 & LR41 Antenna Preparation: ...................................................................................................... 22
LR46 Antenna Preparation: .................................................................................................................... 23
Flange Riser Installation: ....................................................................................................................... 23
Beam Angle: .......................................................................................................................................... 24
Gimbal Mounts (for Solids): .................................................................................................................... 25
Solids Installation Tips: ........................................................................................................................... 25
Section Four | Wire Sensor: ............................................................................................................................ 27
Terminal Wiring: ..................................................................................................................................... 27
Wiring to Displays, Controllers & PLCs: ................................................................................................. 28
Section Five | Configuration: .......................................................................................................................... 30
Basic Configuration Overview: ............................................................................................................... 30
Using the Display: .................................................................................................................................. 31
Changing Display Values: ...................................................................................................
Step 1 - Measure the Tank: ................................................................................................................... 33
Step 2 - Set the Units of Measurement: ................................................................................................. 34
Step 3 - Set the Empty Configuration (4mA): ......................................................................................... 35
Step 4 - Set the Full Configuration (20mA): ........................................................................................... 36
Step 5 - Set the Range (Maximum Range): ........................................................................................... 37
Step 6 - Set the Dead Band: .................................................................................................................. 38
Step 7 - Check the Echo Curve: ............................................................................................................ 39
................... 32
| 2 MN301905 Rev A
Introduction / Table of Contents (continued) Step One
®
Section Six | Configuration with WebCal
Basic Configuration Overview: ............................................................................................................... 40
Step 1 – Install WebCal Software: .......................................................................................................... 41
USB Fob Interface: ...................................................................................................................... 42
Step 2 – Measure the Tank: ................................................................................................................... 43
Step 3 – Sensor Configuration: .............................................................................................................. 44
Step 4 – Dimensional Entry: .................................................................................................................. 45
Step 5 – Tank Level Confirmation: ......................................................................................................... 46
Step 6 – Write to Unit: ............................................................................................................................ 46
Step 7 – Check the EchoCurve: .............................................................................................................. 47
Section Seven | Process Adjustments: ......................................................................................................... 48
Process Adjustments Overview Using WebCal
Process Adjustments Overview Using Display: ...................................................................................... 49
Fast Filling or Emptying of Media: .............................................................................................. 50
Solids with Low Dielectric: ........................................................................................................... 51
Solids with Moderate or Significant Powders or Dust:................................................................. 52
Solids with Large Angle of Repose: ............................................................................................ 53
Solids Requiring First Echo Adjustment: ..................................................................................... 54
Section Eight | Advanced Adjustments: ........................................................................................................ 55
Advanced Adjustments Overview: ......................................................................................................... 55
4-20mA Reverse Output: ....................................................................................................................... 56
Fail-Safe Output: .................................................................................................................................... 57
Minimum Current Output: ....................................................................................................................... 58
Create a New False Echo Curve: .......................................................................................................... 59
Update an Existing False Echo Curve: .................................................................................................. 60
Section Nine | Troubleshooting: ...................................................................................................................... 61
Troubleshooting Overview: .................................................................................................................... 61
Measurement Status: ............................................................................................................................. 62
Peak Values: .......................................................................................................................................... 63
Simulation: ............................................................................................................................................. 64
First Echo Adjustment: ........................................................................................................................... 65
Echo Curve Zoom: ................................................................................................................................. 66
False Echo Curve Delete: ...................................................................................................................... 67
Reset: ..................................................................................................................................................... 68
: .................................................................................................... 40
®
: .................................................................................... 48
MN301905 Rev A 3 |
Introduction / Table of Contents (continued) Step One
Section Ten | Appendix: ................................................................................................................................... 69
Configuration Menu: ............................................................................................................................... 69
Empty Configuration: ............................................................................................................................. 70
Full Configuration: .................................................................................................................................. 70
Medium: ................................................................................................................................................. 71
Liquids: ........................................................................................................................................ 71
Solids: ......................................................................................................................................... 72
Low Dielectric: ............................................................................................................................ 73
Dampen: ................................................................................................................................................ 73
Scaled Units: .......................................................................................................................................... 73
Range: ................................................................................................................................................... 74
Dead Band: ............................................................................................................................................ 74
Display Menu: ........................................................................................................................................ 75
Display Value: ........................................................................................................................................ 75
LCD Contrast: ........................................................................................................................................ 75
Diagnostics Menu: ................................................................................................................................. 76
Peak Values: .......................................................................................................................................... 76
Measurement Status: ............................................................................................................................. 76
Echo Curve: ........................................................................................................................................... 77
Simulation: ............................................................................................................................................. 77
Service Menu: ........................................................................................................................................ 78
False Echo: ............................................................................................................................................ 79
Output Settings: ..................................................................................................................................... 79
Reset: ..................................................................................................................................................... 80
Units of Measurement: ........................................................................................................................... 80
Operational Mode: .................................................................................................................................. 80
Language: .............................................................................................................................................. 80
Information: ............................................................................................................................................ 81
Factory Settings: .................................................................................................................................... 82
User Configuration: ................................................................................................................................ 82
Troubleshooting: ..................................................................................................................................... 83
Warranty: ............................................................................................................................................... 84
| 4 MN301905 Rev A
Introduction / Table of Contents (continued) Step One
SENSOR MODELS
Offered in three different models, EchoPro® is an intrinsically safe, two-wire, pulse radar level sensor that
provides a continuous 4-20 mA current output that’s proportional to the media level in a tank or sump. Make
sure that the model purchased is appropriate for your application.
Series
LR36
LR41
LR46
Max.
Range
49.2’
(15m)
229.7’
(70m)
229.7’
(70m)
Beam Angle Material Mounting
12° (3” horn)
8° (4” horn)
6° (5” horn)
12° (3” horn)
8° (4” horn)
6° (5” horn)
5°
(8” parabolic)
4°
(10” parabolic)
316L SS
316L SS
316L SS
1-1/2” NPT
4” or 5”
gimbaled
flange
1-1/2” NPT
4” or 5”
gimbaled
flange
1-1/2” NPT
4” or 5”
gimbaled
flange
4”, 5”, 6”, 8”
or 10” flange
FCC
Compliance
Part 15.256,
Class B
Part 15.256,
Class B
Part 15.256,
Class B
Application
Solids with normal
temperature and normal
pressure under 32.8’
(10m)
Solids with dew / dust /
crystal under 98.4’ (30m)
Solids with strong dew /
dust / crystal or ranges
over 98.4’ (30m)
MN301905 Rev A 5 |
Introduction / Table of Contents (continued) Step One
OPERATING PRINCIPLE
The sensor emits a microwave pulse from its antenna, which travels at the speed of light to the surface of the
medium below. A portion of that energy reflects off the medium and returns to the antenna. The time gap
between energy emission and receipt is called the “time of flight”, and is proportional to the distance between
the medium surface and the sensors measurement location, as at the bottom of the antenna. The sensor
measures the time of flight and translates this value into a continuous 4-20mA signal output that’s
proportionate to level within a defined measurement span.
FEATURES
Easy configuration with LCD push button display module
Adjustable loop fail-safe, no change, 20.5 mA, 22 mA
Small 12” (30.48cm) dead band enables full tank measurement
Recognition, storage and deletion of false echo signal returns
BENEFITS
Unaffected by physical process and environmental conditions
Ideal for applications with higher temp, pressure, foam, vapor and vacuum
Strong signal penetrability with minimal attenuation over distance
LIMITATIONS (FACTORS THAT COULD INFLUENCE PERFORMANCE)
Air particulates with a high dielectric constant value such as lead or ferroalloy
Highly dense air particulates that attenuate microwave emission and receipt
Material build-up on the antenna that degrades microwave emission and receipt
Mediums that have an extremely low dielectric constant value with little reflectivity
| 6 MN301905 Rev A
Introduction / Table of Contents (continued) Step One
SPECIFICATIONS
Measurement Range: LR36: . 49.2 feet (15m)
(maximum) LR41: 229.7 feet (70m)
LR46: 229.7 feet (70m)
Dead Band: 12” (30.48cm) / Factory Set -
Note: Can be lowered to 2” from the bottom of the antenna
Measurement Accuracy: LR36: . ±10mm
(see charts on pages 8 & 9) LR41: ±15mm
LR46: ±15mm
Display Resolution: 1 mm
Frequency Range: 26 GHz
Measurement Interval: About 1 sec (dependent on configuration settings)
Adjustment Time: About 1 sec (dependent on configuration settings)
Beam Angle: LR36: 12° - 3” (78mm) Horn
8° - 4” (98mm) Horn
6° - 5” (123mm) Horn
LR41: 12° - 3” (78mm) Horn
8° - 4” (98mm) Horn
6° - 5” (123mm) Horn
LR46: 5° - 8” (196mm) Horn
4° - 10” (246mm) Horn
Process Connection: LR36: 1-½” NPT
4” Gimbaled Flange
5” Gimbaled Flange
LR41: 1-½” NPT
4” Gimbaled Flange
5” Gimbaled Flange
LR46: 1-½” NPT
4” Gimbaled Flange
5” Gimbaled Flange
Material:
Series LR36 LR41 LR46
Flange
Enclosure
Antenna
Extension
Seal
Seal Ring
Window
Ground
Terminal
Silicone (between housing and cap)
316L SS
316L SS
316L SS
N/A
Viton®
Polycarbonate
Stainless Steel
MN301905 Rev A 7 |
Introduction / Table of Contents (continued) Step One
Weight: LR36: 13.2 lbs (6kg)
Depends on process LR41: 15.4 lbs (7kg)
connection size and LR46: 15.4 lbs (7kg)
housing configuration
Temperature (Process): LR36: F: -40° to 392°
C: -40° to 200°
LR41: F: -76° to 752°
C: -60° to 400°
LR46: F: -76° to 752°
C: -60° to 400°
Temperature compensation: Automatic
Temperature (Storage): F: -40° to 176°
C: -40° to 80°
Relative Humidity: <95%
Process Pressure: LR36: -14.5 to 580 psi
(-1 to 40 bar)
LR41: -14.5 to 580 psi
(-1 to 40 bar)
LR46: -14.5 to 580 psi
(-1 to 40 bar)
Vibration Proof: Mechanical vibration 10m/s, 10m
Output:
Signal Output: 4-20mA
Signal Invert: 4-20mA, 20-4 mA
Resolution: 1.6µA
Fail-Safe Setting: 20.5mA, 22mA or no change
Integration Time: 0-40 sec, adjustable
Load Resistance: See chart below
2
/s, 10 -150 Hz
| 8 MN301905 Rev A
Introduction / Table of Contents (continued) Step One
Power:
Power Supply: 24 VDC (21.6 to 26.4 VDC) the same two-wire connection cable carries power
supply and current signal.
Power Consumption: 22.5mA maximum
Ripple Allowed:
<100Hz: <1V
100 to 100 KHz: <10mV
Enclosure Rating: IP67 (NEMA 6)
Cable Connection: Standard 2-wire shielded cable with earth ground wire and outside diameter of 5-
9mm is recommended.
Cable Entry/Plug: One cable entry (½” NPT with adapter, M20x1.5)
Accuracy Charts
MN301905 Rev A 9 |
Introduction / Table of Contents (continued) Step One
Communication: FCC (US)
Part 15.256, Class B: LR36 (3”, 4”, 5” horn), LR41 (3”, 4”, 5” horn) & LR46 (8”,
10” parabolic) series can be installed on any tank material.
Compliance: The equipment complies with the following standards:
IEC: 60079-0:2011 & 60079-11:2011
EN: 60079-0:2012 & 60079-11:2012
RoHS
This product is an intrinsically safe version (Ex ia IIC T6…T3 Ga) with stainless steel
housing. All electric circuits are fully encapsulated in the internal enclosure, where no
conductive parts will contact with flammable gas. Two-Wire system in service, the
power of the product is from safety barrier limited at:
U
= 26.4V Ii = 114mA Pi = 0.752W Ci = 0 Li = 51µH
i
A safety barrier should be placed between power source and instrument for intrinsically
safe version. All connection cables must be screened with maximum length of 500m
(stray capacitor ≤ 0.1 µF/Km and stray inductance ≤ 1mH/Km). The level measurement
instrument must be connected to ground potential and unapproved supplemental
devices are not allowed to use.
Application conditions:
Temp. class T6 T5 T4 T3
Ta (max.)
60 °C 60°C 95°C 130°C 180°C
65 °C ----- 70°C 130°C 180°C
70 °C ----- 70°C 130°C 180°C
85 °C ----- ----- 130°C 180°C
Pressure for electronic housing 11.5 psi (80kPa) to 16.0 (110kPa).
Maximum process temperature
Ambient temperature: T6: -20°C ≤ Ta ≤ 60°C
T5: -20°C ≤ Ta ≤ 70°C
T4: -20°C ≤ Ta ≤ 85°C
T3: -20°C ≤ Ta ≤ 85°C
Cable Connection:
This product shall be used with certified IECEx and ATEX cable glands and block plugs. The cable
used for “ia” terminal shall be in compliance with the requirement of EN/IEC 60071-14 clause.
Additional requirements for types of protection “I” – intrinsic safety. It’s installing and operation
instructions should be observed if other cable glands are used.
Care should be taken with the cable glands which should be matched to the cable used outside
diameter property; see mark of cable gland for the outer diameter of being cable used.
In order to ensure the required minimum degree of protection, the bolts of cable glands, blanking plug
and relevant sealing bolts are to be tighten down.
| 10 MN301905 Rev A
Introduction / Table of Contents (continued) Step One
INTRINSICALLY SAFE CONTROL DRAWING 301901:
Intrinsically Safe Approvals:
Intrinsic Safe:
North America: Class I, Div.1, Groups A, B, C, D; Class II, Div.1, Groups E, F, G; (T6…T3)
(
Zone 20 AEx ia IIIC (T76°C to T146°C) Da
Ex ia IIC (T6…T3) Ga
Ex ia IIIC (T76°C to T146°C) Da
ATEX: II 1G Ex ia II C T6…T3 Ga;
(TUV) II 1D Ex ia IIIC T76°C…T146°C
IECEx: Ex ia II C T6…T3 Ga;
(TUV) Ex ia III C T76°C…T146°C Da
General: CE, RoHS
Intrinsically Safe Entity Parameters:
= 26.4V; Ii = 114 mA; Pi = 0.752W; Ci = 0; Li = 51 μH
U
i
MN301905 Rev A 11 |
CSAus) Class I, Zone 0 AEx ia IIC (T6…T3) Ga
c
Introduction / Table of Contents (continued) Step One
LABELS FOR INTRINSIC SAFETY
Part Number Label
| 12 MN301905 Rev A
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Step On
R36 & LR
1 Series
LR
6 & LR41
eries
LR36
Diam
3” (7
4” (9
5” (12
LR41 Thr
ntenna Di
ter (X)
mm)
mm)
7mm)
aded Seri
mensions
Length
8.94” (227
11.34” (28
24.41” (62
s
Y)
m)
mm)
mm)
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LR36
A
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4”
NSI 8(22
5”
NSI 9(25
LR36 &
Dia
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A
Diamete
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4” (98
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& LR41 Fl
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eter
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mm) 7(1
.8”
mm)
meter = 0.
R41 Thre
tenna Dim
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m)
m) 1
m) 2
Di
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nsions
meter
(B)
.09”
0mm) (1
.27”
0mm)
1” (18mm)
ded Series
nsions
Length (Y
.94” (227m
.34” (288m
.41” (620m
Th
(1
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(H)
0.45”
1.5mm)
0.45”
1.5mm)
8
)
m)
m)
MN30
1905 Rev A
1
3 |
Introduction / Table of Contents (continued) Step One
LR46 Series
LR46 Series
LR46 Threaded Parabolic Series
Antenna Dimensions
Diameter (X) Length (Y)
7.8” (198mm) 5.55” (141mm)
9.7” (246mm) 5.55” (141mm)
Flange
4”
ANSI
5”
ANSI
6”
ANSI
8”
ANSI
10”
ANSI
LR46 Flange Parabolic Series
Antenna Dimensions
Diameter
(A)
8.7”
(220mm)
9.8”
(250mm)
11.2”
(285mm)
13.4”
(340mm)
15.9”
(405mm)
Diameter
(B)
7.09”
(180mm)
8.27”
(210mm)
9.5”
(240mm)
11.6”
(295mm)
14.0”
(355mm)
Thickness
(H)
0.45”
(11.5mm)
0.45”
(11.5mm)
0.45”
(11.5mm)
0.45”
(11.5mm)
0.45”
(11.5mm)
Hole
Pattern
8 x
18mm
8 x
18mm
8 x
22mm
12 x
22mm
12 x
26mm
LR46 Threaded Parabolic Series
Antenna Dimensions
Diameter (X) Length (Y)
| 14 MN301905 Rev A
7.8” (198mm) 4.53” (115mm)
9.7” (246mm) 4.53” (115mm)
Introduction / Table of Contents (continued) Step One
SAFETY PRECAUTIONS
About this Manual: PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS
®
PRODUCT. This manual includes information on the EchoPro
Radar Level Transmitter from FLOWLINE.
Please refer to the part number located on the sensor label to verify the exact model, which you have
purchased.
User’s Responsibility for Safety: Flowline manufactures a broad range of level sensing technologies.
While each of these sensors is designed to operate in a wide variety of applications, it is the user’s
responsibility to select a sensor model that is appropriate for the application, install it properly, perform tests of
the installed system, and maintain all components. The failure to do so could result in property damage or
serious injury.
Proper Installation and Handling: Only professional staff should install and/or repair this product. Never
over tighten the sensor within the fitting. Always check for leaks prior to system start-up.
Wiring and Electrical: A supply voltage of 21.6 to 26.4 VDC is used to power the EchoPro®. Electrical
wiring of the sensor should be performed in accordance with all applicable national, state, and local codes.
Material Compatibility: The enclosure is made of either Aluminum or 316 Stainless Steel (refer to sensor
part number). The antenna is made of Stainless Steel (SS), Polytetrafluoroethylene (PTFE), Polyvinylidene
Fluoride (PVDF) or Nylon (PA66) with a Viton seal (refer to sensor part number). Make sure that the model,
which you have selected, is chemically compatible with the application media.
Enclosure: The sensor housing is media-resistant, but is not designed to be operational when immersed.
Mount the sensor in such a way that the enclosure and antenna do not come into contact with the application
media under normal operational conditions. The enclosure has a cover that provides access to the push
button display module and terminal strip for wiring. To open the enclosure, you will need to twist the cover
counter-clockwise. Before closing the enclosure, make sure that the enclosure gasket is properly seated, and
that any conduit fittings, cable connectors or plugs are installed correctly and sealed. Note: If using the
Flowline LM90-1001 (liquid tight fitting) on the ½” conduit, the cable minimum is 0.170” (4.3mm) and the
maximum is 0.450” (11.4mm).
Make a Fail-Safe System: Design a fail-safe system that accommodates the possibility of sensor and/or
power failure. FLOWLINE recommends the use of redundant back-up systems and alarms in addition to the
primary system.
Flammable, Explosive or Hazardous Applications: EchoPro® is approved for use within intrinsically
safe applications ONLY and should NOT be used within classified hazardous environments.
Handling Static-Sensitive Circuits and Devices: When handling the instrument, the technician should
follow the below guidelines to reduce the possibility of an electrostatic charge build-up on the technician’s body
from being transferred to the electronic part. Always touch a known good ground source before handling a
part. This should be repeated while handling the part and more frequently after sitting down from a standing
position, sliding across the seat or walking a distance. Avoid touching electrical terminals of the part unless
making connections. DO NOT open the unit cover until it is time to work on the part.
MN301905 Rev A 15 |
Getting Started Step Two
SETUP OVERVIEW
The below highlights the initial steps in setting up your sensor for operation.
1. Part Number (Section Two)
1. Prior to purchasing the sensor, you may have submitted a Level Application Questionnaire
(www.flowline.com/LAQ), which based upon the information provided, may have resulted in a
suggested part number. Where so, confirm that the suggested part number matches the part
number of the purchased sensor. If any of the above does not match and/or meet your
application requirements, please contact your distributor.
2. Install Sensor (Section Three)
1. Information on the location and mechanical installation of the sensor.
3. Wire Sensor (Section Four)
1. Information on the electrical wiring and power requirements of the sensor.
4. Basic Configuration (Section Five)
1. Begin by measuring the tank for all key dimensions.
a. Accuracy in measurement will result in accuracy of sensor performance.
2. Set the Units of Measurement for the sensor.
a. Units can be configured in basic engineering units of length: Feet, Meters
3. Set the Sensor Height for the sensor in the tank.
a. This is the 4mA setting for the output.
4. Set the Fill-Height for the sensor in the tank.
a. This is the 20mA setting for the output.
5. Set the Max. Range (Maximum Range or MaxR) for the sensor in the tank.
a. The sensor will ignore any echo signal returns beyond this setting.
6. Set the Dead Band (Minimum Range or MinR) for the sensor in the tank.
a. The sensor will ignore any echo signal returns closer than this setting.
7. Check the Echo Curve
a. This is a quick check to determine if the sensor is reading the correct level.
®
Note: When configuring EchoPro
, choose either the Push Button or WebCal® method. WebCal® can be used
to enter or adjust the Sensor Height, Fill-Height, Maximum Range or Dead Band settings only. Either method
will accomplish the goal of sensor configuration. Changes to the configuration can be made using the
alternative method. When beginning with one method, it is recommended to complete the configuration before
using the other method for any other adjustments.
5. Basic Configuration Using WebCal
1. Install WebCal
®
software
2. Measure the Tank
a. Accuracy in measurement will result in accuracy of sensor performance.
3. Sensor Configuration
4. Dimensional Entry
5. Tank Level Confirmation
6. Write to Unit
7. Check EchoCurve
a. This is a quick check to determine if the sensor is reading the correct level.
| 16 MN301905 Rev A
®
(Section Six)
Getting Started (continued) Step Two
6. Process Adjustments (Section Seven)
1. Information on OPTIONAL adjustments for specific process conditions that may exist in your
application.
a. Fast filling or emptying of media.
b. Media surface is turbulent or agitated.
c. Foam on the surface of the media.
d. Sensor installed in a still well or sight glass.
e. Powder or Dust is present.
f. Low Dielectric material
g. Large Angle of Repose with the material
7. Advanced Adjustments (Section Eight)
1. Reverse 4-20 mA Output
a. Reverses the current output from 4mA @ bottom and 20mA @ top of tank to
bottom and 4mA @ top of the tank.
2. Fail-Safe Setting
a. Allows for the presetting of the current output when a sensor failure occurs.
3. Minimum Current Setting
a. Sets the minimum current output for the sensor.
4. Create a New False Echo Curve
a. A method to map out false echo signal returns within the tank.
5. Update an Existing False Echo Curve
a. A method to update false echo signal returns for a section of the tank that was not
exposed during the creation of the original False Echo Curve.
8. Troubleshooting (Section Nine)
1. Measurement Status
a. Determines the measurement reliability and general status of the sensor.
2. Peak Values
a. Displays the lowest and highest level height that the sensor has measured in distance
(d).
3. Simulation
a. Simulates and helps to determine the accuracy and linearity of the sensor.
4. First Echo Adjustment
a. Increases or decreases the strength of the first echo signal return.
5. Echo Curve Zoom In
a. A method to zoom in and view the Echo Curve over a specific range.
6. False Echo Curve Delete
a. A method to delete a previously saved False Echo Curve from memory.
7. Reset
a. A method to reset the sensor’s configuration to the original factory setting.
20mA @
MN301905 Rev A 17 |
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r will indica
umber des
requiremen
-
5
Hou
ing Materi
-
Stainless S
5
rocess Co
2 1
-
- Thread
-
NSI Fl
e the size
ription for
ts, please c
-
l
eel
nection
1 ½” NPT
nge
nd type of
pecific inf
ntact your
mounting fi
rmation. If
istributor.
ting require
any of the
for installi
above doe
ng the sen
not match
or. Refer t
and/or me
t
Output
- 4-2
Appr
1
mA
val
-
TEX / IEC
Antenna
4
5
- 4" (9
- 5" (1
Flang
- T
0
- 4
4
- 5
5
x / HazLoc
hape
mm) Horn
3mm) Horn
Size
hreaded C
Gimbaled
Gimbaled
FOB
0 0
0 1
Wit
Wit
nnection
Flange
Flange
out FOB
FOB
2
| 18
N301905 Rev
Getting Started (continued) Step Two
LR41
-
5 2 1
Housing Material
- Stainless Steel
5
Process Connection
- Thread 1 ½” NPT
0
- ANSI Flange
3
Output
2
- -
- 4-20 mA
Approval
- ATEX / IECEx / HazLoc
1
Antenna Shape
- 4" (98mm) Horn
4
- 5" (123mm) Horn
5
- 4" (98mm) Horn (PTFE Cover)
A
- 5" (123mm) Horn (PTFE Cover)
B
Flange Size
- Threaded Connection
0
- 4” Gimbaled Flange
4
- 5” Gimbaled Flange
5
FOB
0 0
0 1
Without FOB
With FOB
LR46
-
5 3 2 1
Housing Material
5 - Stainless Steel
Process Connection
- ANSI Flange
3
Output
2 - 4-20 mA
- -
Approval
- ATEX / IECEx / HazLoc
1
Antenna Shape
- 8" (196mm) Parabolic
8
- 10" (246mm) Parabolic
0
Flange Size
- 4” Gimbaled Flange
4
- 5” Gimbaled Flange
5
FOB
0 0
0 1
Without FOB
With FOB
MN301905 Rev A 19 |
Install Sensor Step Three
INSTALLATION REQUIREMENTS
EchoPro® measures the distance between the sensor and the media surface below. Typically, all
measurements from the sensor originate from the bottom of the antenna. Refer to the Measurement
Reference Chart to determine the location where measurement originates on your sensor. To ensure reliable
measurement, adhere to the following minimum installation requirements:
1) There are no obstructions between the bottom edge of the installed antenna and the surface of the media below
including ladders, walls, tank seams, media inflows, rails, other sensors, mixer blades, heating coils, pumps,
struts or apparatus. Note: Additionally, when the sensor transmits a microwave pulse, the RF signal spreads in
a conical shape (determined by its beam angle) over distance. Refer to the Beam Angle Chart to determine,
what if any, additional measurement space is required to be free of such obstacles. If such items are present,
then a False Echo Curve configuration must be conducted (Section Seven).
2) The sensor must be installed with the antenna perpendicular to the surface of the media.
3) The sensor must be installed with a distance ≥ 19.7” (500mm) from the side wall of the tank.
4) The media level must not be allowed to enter into the dead band (blanking zone) of the sensor.
5) The sensor installation must be done in accordance with relevant local or federal safety regulations.
6) The sensor must be connected to electrical ground.
7) Do not use the housing to screw the sensor into the installation fitting (LR36 & LR41 Series).
a) Applying force against the housing to tighten may damage the sensor.
8) Make sure that any part of the sensor as exposed to the application, specifically any portion installed within
the tank, are suitable for the process.
a) Consider any effects from the application temperature, pressure or media.
| 20 MN301905 Rev A
Install Sensor Step Three
FCC CONFORMITY
This instrument complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this instrument may not cause harmful interference, and; (2) this instrument must accept
any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the manufacturer could void the user’s authority to
operate the equipment.
Warning: User must maintain a safe zone distance of at least 20cm (7.87”) from the antenna.
NOTE: LR36 (4” & 5” horn), LR41 (4” & 5” horn) & LR46 (8” and 10” parabolic) series: This
equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference to radio and
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Isolate the equipment to an outlet different from where the receiver is connected.
Consult the dealer or an experienced technician for help.
MN301905 Rev A 21 |
Install Sensor (continued) Step Three
LR36 & LR41 ANTENNA PREPARATION
The LR36 and LR41 Series antenna (only) may be removed from the sensor to allow a flange or reducer
bushing accessory to be attached to the 1 ½” NPT mounting threads and/or, the antenna may be inserted from
within the inside of the tank through the bottom of an existing fitting (where the base of the antenna is too wide
to pass through the fitting from the top). Referencing the illustrations, follow the below steps to disconnect,
mount and reattach the antenna.
1) Loosen and remove the four (4) socket screws using a 3mm Allen wrench.
2) Carefully remove the antenna. Note: Do not remove or damage the plastic cone (microwave RF emitter)
within the antenna socket.
3) Insert the antenna through the bottom of the fitting. Note: If doing so from the inside of the tank, make
sure to secure it, so as to prevent the antenna from falling into the tank.
4) Connect the sensor to the antenna socket and reattach the four (4) screws using a 3mm Allen wrench.
5) Attach the sensor to the fitting as necessary.
Add a Flange
Remove Screws Remove Antenna Insert Antenna Connect Antenna
to Sensor,
Thread Sensor to
Flange
Attach Screws
Add a Reducer Bushing
Remove Screws Remove Antenna Insert Antenna Connect Antenna
to Sensor
Attach Screws
Thread Sensor to
Reducer Bushing
| 22 MN301905 Rev A
Install Sensor (continued) Step Three
LR46 PARABOLIC ANTENNA PREPARATION
The LR46 Series parabolic antenna (only) may be removed from the sensor to allow a flange or reducer
bushing accessory being attached to the 1 ½” NPT mounting threads and/or, the antenna may be inserted from
within the inside of the tank through the bottom of an existing fitting (where the base of the antenna is too wide
to pass through the fitting from the top). Referencing the illustrations, follow the below steps to disconnect,
mount and reattach the antenna.
1) Loosen and remove the tri-clamp connector.
2) Carefully remove the antenna.
3) Insert the antenna through the bottom of the flange. Note: If doing so from the inside of the tank, make
sure to secure it, so as to prevent the parabolic antenna from falling into the tank.
4) Connect the sensor to the parabolic antenna socket and reattach the tri-clamp connector.
5) Attach the sensor to the fitting as necessary.
Add a Flange to the Parabolic Antenna
Uncrew
Tri-Clamp
Remove
Parabolic
Insert
Flange
Connect Antenna
to Sensor, Attach
Screws
Thread Sensor to
Reducer Bushing
FLANGE RISER INSTALLATION
When installing the sensor on a flange with a riser (or any fitting that is tall and narrow), the antenna must
protrude at least 0.4” (10mm) from the bottom of the riser.
Antenna Extension
LR46 Series Shown
The sensor can be installed within the riser as long as the media has a strong
reflective property (dielectric constant) providing a strong echo return. The
below information describes the maximum distance that the antenna can be
recessed within a riser based on the diameter and height of the fitting.
MN301905 Rev A 23 |
Install Sensor (continued) Step Three
BEAM ANGLE
The emitted microwave pulse will expand along its specified beam angle for the entire height of the tank.
Place the sensor so that objects will not interfere with the beam path underneath the sensor. The beam angle
is a function of the sensor Series and antenna length (where variable). Verify the beam angle specification of
your sensor and reference the below charts to determine the amount of free measurement space required
under the installed sensor.
Beam
Angle
4° 5° 6° 8° 12°
Height
10’
20’
30’
40’
50’
60’
70’
80’
90’
100’
0.70’ 0.87’ 1.05’
1.40’ 1.75’ 2.10’
2.10’ 2.62’ 3.14’
2.79’ 3.49’ 4.19’
3.49’ 4.37’ 5.24’
4.19’ 5.24’ 6.29’
4.89’ 6.11’ 7.34’
5.59’ 6.99’ 8.39’
6.29’ 7.86’ 9.43’
6.98’ 8.73’ 10.48’
Beam
Angle
4° 5° 6°
Height Diameter
5m
10m
15m
20m
25m
AVOID CONDENSATION IN THE CONDUIT
30m
0.35m 0.44m 0.52m 0.70m 1.05m
0.70m 0.87m 1.05m 1.40m 2.10m
1.05m 1.31m 1.57m 2.10m 3.15m
1.40m 1.75m 2.10m 2.38m 4.20m
1.75m 2.18m 2.62m 3.50m 5.26m
2.10m 2.62m 3.14m 4.20m 6.31m
Diameter
1.40’ 2.10’
2.80’ 4.20’
4.20’ 6.31’
5.59’ 8.41’
6.99’ 10.51’
8.39’ 12.61’
9.79’ 14.71’
11.19’ 16.82’
12.59’ 18.92’
13.99’ 21.02’
8° 12°
LR36
You can give your instrument additional protection against moisture
penetration by leading the conduit connection or cable downward in front
of the cable entry. Condensation in the conduit will therefore not enter
the sensor’s enclosure.
| 24 MN301905 Rev A
Install Sensor (continued) Step Three
GIMBAL MOUNTS (FOR SOLIDS)
Be aware of antenna’s length and width when using a gimbaled mount. The freedom of movement for the
gimbaled becomes less as the riser’s height increases.
SOLIDS INSTALLATION TIPS
In order to measure as much of the solids volume as possible, the antenna must be aimed at the lowest point
within the tank. With any cylindrical shaped tank with a cone bottom, the sensor should be mounted a distance
of half the radius (½R) from the side wall. If ½R cannot be met, it is preferred to mount the sensor closer to the
side wall and away from the center of the tank.
Avoid installing the sensor above the filling stream to avoid interference to the radar pulse. Locate the sensor
away from the filling stream.
MN301905 Rev A 25 |
Install Sensor (continued) Step Three
SOLIDS INSTALLATION TIPS (CONTINUED)
When using the gimbaled flange, the sensor can easily be mounted to direct the signal energy towards center
of the tank. The angle of the sensor will be dependent on the distance down to the bottom of the tank and the
distance away from the bottom of the cone. Use the chart below to understand the angle required to direct the
signal to the bottom of the cone.
Distance
(Y)
10’ 0.35’ 0.70’ 1.05’ 1.41’ 1.76’
20’ 0.70’ 1.40’ 2.10’ 2.81’ 3.53’
30’ 1.05’ 2.10’ 3.15’ 4.22’ 5.29’
40’ 1.40’ 2.80’ 4.20’ 5.62’ 7.05’
50’ 1.75’ 3.50’ 5.26’ 7.03’ 8.82’
60’ 2.10’ 4.20’ 6.31’ 8.43’ 10.58’
70’ 2.44’ 4.89’ 7.26’ 9.84’ 12.34’
80’ 2.79’ 5.59’ 8.41’ 11.24’ 14.11’
90’ 3.14’ 6.29’ 9.46’ 12.65’ 15.87’
100’ 3.49’ 6.99’ 10.51’ 14.05’ 17.63’
2°
(Z)
4°
(Z)
6°
(Z)
8°
(Z)
10°
(Z)
Distance
(Y)
2°
(Z)
5m 0.17m .35m 0.53m 0.70m 0.88m
10m 0.35m 0.70m 1.05m 1.41m 1.76m
15m 0.52m 1.05m 1.58m 2.11m 2.65m
20m 0.70m 1.40m 2.10m 2.81m 3.53m
25m 0.87m 1.75m 2.63m 3.51m 4.41m
30m 1.05m 2.10m 3.15m 4.22m 5.29m
4°
(Z)
6°
(Z)
8°
(Z)
10°
(Z)
| 26 MN301905 Rev A
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