Milltronics ILE-61 User manual

ILE-61 SENSING HEAD
November 2001
ILE-61 SEINSIING HEAD
Instruction Manual PL-376
Siemens Industrial

© Siemens Milltronics Process Instruments Inc. 2001
Safety Guidelines
Warning notices must be observed to ensure personal safety as well as that of others, and to
protect the product and the connected equipment. These warning notices are accompanied
by a clarification of the level of caution to be observed.
Qualified Personnel
This device/system may only be set up and operated in conjunction with this manual.
Qualified personnel are only authorized to install and operate this equipment in accordance
with established safety practices and standards.
Warning: This product can only function properly and safely if it is correctly transported,
stored, installed, set up, operated, and maintained.
Note: Always use product in accordance with specifications.
Copyright Siemens Milltronics Process
Instruments Inc. 2001. All Rights Reserved Disclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to
purchase authorized bound manuals, or to view
electronic versions as designed and authored by
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Siemens Milltronics Process Instruments Inc. will
not be responsible for the contents of partial or
whole reproductions of either bound or electronic
versions.
While we have verified the contents of
this manual for agreement with the
instrumentation described, variations
remain possible. Thus we cannot
guarantee full agreement. The
contents of this manual are regularly
reviewed and corrections are included
in subsequent editions. We welcome
all suggestions for improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.
Contact SMPI Technical Publications at the following address:
Technical Publications
Siemens Milltronics Process Instruments Inc.
1954 Technology Drive, P.O. Box 4225
Peterborough, Ontario, Canada, K9J 7B1
Email: [e-mail]
For the library of SMPI instruction manuals, visit our Web site: www.milltronics.com

7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 1
Table of Contents
ILE-61 Sensing Head........................................................................................................... 2
Specifications...................................................................................................................... 3
Installation........................................................................................................................... 6
Sensing Head ...........................................................................................................................................6
Sensing Plate ...........................................................................................................................................6
Viscous Damper .......................................................................................................................................7
Interconnection ........................................................................................................................................7
Non-Hazardous Unit without LVDT Conditioner Card ..........................................................7
Non-Hazardous Unit with Sensing Head Mounted LVDT Conditioner Card ..................8
Non-Hazardous Unit with Remote-Located LVDT Conditioner Card ...............................9
Calibration.......................................................................................................................... 10
General .....................................................................................................................................................10
LVDT Output ............................................................................................................................................10
Zero Adjustment ..........................................................................................................................10
Span Test .......................................................................................................................................11
Sensing Head Level Test ...........................................................................................................11
Integrator Calibration ...........................................................................................................................12
Maintenance and Spare Parts........................................................................................ 13
Maintenance ..........................................................................................................................................13
Spare Parts .............................................................................................................................................13
Inner Gasket Placement ......................................................................................................................13
Range Springs ................................................................................................................... 15
General .....................................................................................................................................................15
Range Spring Removal ........................................................................................................................15
Range Spring Replacement ................................................................................................................15
Flowmeter Recalibration .....................................................................................................................15
Troubleshooting................................................................................................................. 16
Linearity.............................................................................................................................. 17
ILE - 61 Sensing Head Outline and Mounting .............................................................18
ILE - 61 Part Identification Diagram .............................................................................19
ILE - 61 Part Identification Table ..................................................................................20
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Page 2 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
ILE-61 Sensing Head: Introduction
The Milltronics ILE-61 Sensing Head is used for continuous in-line weighing of powdered
or granular dry bulk solid materials. The material is directed toward the sensing plate.
The horizontal impact force of the material, deflecting the sensing plate, displaces the
core of the sensing head LVDT (linear variable differential transformer). The LVDT output
signal is proportional to material flowrate.
The ILE-61 sensing head is used with Milltronics E-300 (general purpose), A-300 (aerated
gravity conveyor), and V-300 (vertical material drop) dry solids flowmeters.
.
LVDT
moving beam travel
sensing plate
impact force
E-300 A-300 V-300
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 3
Specifications
ILE-61 Sensing Head
Operating Range
• 0 to 20 TPH min, 0 to 300 TPH max
Product
• fine powder to 25 mm (1")
Product Temperature
• -40 to 232°C (-40 to 450°F)
Ambient Temperature
• -40 to 60°C (-40 to 140°F)
Accuracy
• 1% of full scale
Repeatability
•0.2%
Classification
• CSA certified, general purpose
Range Spring
• selected to suit application
Construction
• cast aluminum frame with fibreglass rear cover
Mounting
•basemount
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Page 4 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Sensor Type
• LVDT (linear variable differential transformer)
LVDT Excitation:
• 2.50 Vac @ 2.9 kHz (supplied by Flowmeter Integrator or LVDT Conditioner Card)
LVDT Output:
• 0 - 0.75 Vac @ 2.9 kHz
Damping Fluid:
• 10 - 100 cm2/s (1000 - 10 000 cs) silicone, (Dow Corning 200)
Options:
• Epoxy, Teflon1,® or Tufram2® frame coating
• Epoxy painted mild steel or stainless steel rear cover
• CSA Class I - groups C & D, Class 2 - groups E, F, & G
Approvals
•CE
SENSING PLATE
Construction:
• 304 stainless steel
Options:
• 316 stainless steel 6
• UHMW polyurethane or Ceramic Tile lining
• Teflon®or plasma coating
LVDT Conditioner Card
Power
• ± 5 Vdc (typically from an Accumass integrator)
1. Tufram®is a registered trademark of General Magnaplate.
2. Teflon®is a registered trademark of DuPont.
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 5
Ambient Temperature
• -20 to 50°C (-2 to 122°F)
Input
• 0 to 1.0 V from LVDT
Output
• 0 to 50 mV to Accumass SF500 (maximum 300 m (1000 ft) separation between
Conditioner Card and integrator)
Approvals
•CE
Enclosure
• NEMA 4 (remote mounted unit)
Cable
For connection between LVDT Conditioner Card and Integrator
• Belden 8404, 4 conductor, shielded 20 AWG or equivalent, 150 m (500 ft) maximum
• Belden 9260, 6 conductor, shielded 20 AWG or equivalent, 300 m (1000 ft) maximum
For connection between LVDT and remote LVDT Conditioner Card,
or directly between LVDT and Integrator
• Belden 8404, 4 conductor, shielded 20 AWG or equivalent, 300 m (1000 ft) maximum
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Page 6 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Installation
Sensing Head
1. With the flowmeter housing installed, mount the ILE-61 to a rigid support structure.
2. Remove the ILE-61 fibreglass cover. With the outer gasket in place, bolt the ILE-61 to
the housing.
3. Adjust the sensing head leveling hardware (provided) to establish level in both
horizontal planes.
Sensing Plate
1. Open the flowmeter housing access door.
2. With the sensing head cover removed, remove the taper pin.
3. Insert the sensing plate shaft fully into the sensing head socket.
4. Insert the taper pin (flat side down), from the left side.
5. Tighten the right taper pin nut to lock the sensing plate shaft in place.
6. Tighten the left taper pin nut.
Note: Ensure the sensing head mounting structure is capable of supporting the
dynamic material impact forces as well as the weight of the sensing head.
spirit level
rigid support
moving beam
(machined
surface)
Note: Ensure the sensing plate shaft is installed with the flat side up.
taper pin
(flat side down)
shaft
socket
flat side up
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 7
Viscous Damper
1. Remove the 2 damper cover shipping screws. The damper cover will be held up by a
spring.
2. If necessary, top up the damper (to near overflowing) with the damping fluid
supplied.
3. Store the damper cover shipping screws, remaining damper fluid, and filler bottle for
future use.
Interconnection
Non-Hazardous Unit without LVDT Conditioner Card
* See note below for Encapsulated (Hazardous-rated) LVDT color codes.
Note: The damper must be full and free of air bubbles with the damper cover in the UP
position during flowmeter operation.
fill
er
b
ott
l
e
filler plug
shipping screws
damper cover
to LVDT
G
R
N
B
L
K
Y
E
L
B
L
U
R
E
D
S
I
G
–
C
O
M
E
X
C
–
E
X
C
+
to integrator
(LVDT connection)
flowmeter
terminal
block
*For Encapsulated LVDT (hazardous)
YEL = WHITE
BLU = ORANGE
GRN = YELLOW
cable
clamp
Note: Ground shield at Integrator only.
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Page 8 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Non-Hazardous Unit with Sensing Head Mounted LVDT
Conditioner Card
• Not applicable to Hazardous-rated units
• LVDT to LVDT Conditioner Card connections are made by Milltronics
*Where separation between the integrator and LVDT conditioner exceeds 150 m (500 ft):
• Remove the jumpers SF500 terminal 11/12 and 13/14
• Run additional conductors:
- from SF500 terminal 12 to conditioner terminal block marked “Integrator +EXC”
- from SF500 terminal 13 to conditioner terminal block marked “Integrator –EXC”
For further connection information on specific LVDTs, consult Milltronics.
11 14 12
111
6
122
7
133
8
14
15
16
17
4
9
5
10
18
V+
S+
S-
V-
SHLD
-LOAD CELL-
EXCITATION
LCA+
LCA-
LCB+
LCB-
SHLD
LCC+ SIG
LCC- COM
LCD+ CNST
LCD-
SHLD
-LOAD CELL INPUTS-
E
X
C
+
E
X
C
+
E
X
C
-
E
X
C
-
C
O
M
S
I
G
/
C
O
M
C.
T.
S
I
G
-
S
H
L
D
S
H
L
D
S
I
G
+
LV D T I N TE G RAT O R
RED
BLUE
YELLOW
BLACK
GREEN
SF500
Integrator
Milltronics LVDT Conditioner Card
*
LVDT
♦Note:
1. Shields are common, but not grounded to chassis. Run cable shields through
SHLD terminals and ground at Integrator only.
2. Ensure that connection between TB 2 and TB 17 is made.
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 9
Non-Hazardous and Hazardous Units with Remote-
Located LVDT Conditioner Card
*Where separation between the Integrator and LVDT conditioner exceeds 150 m (500 ft):
• Remove the jumpers SF500 terminal 11/12 and 13/14
• Run additional conductors:
- from SF500 terminal 12 to conditioner terminal block marked “Integrator +EXC”
- from SF500 terminal 13 to conditioner terminal block marked “Integrator –EXC”
For further connection information on specific LVDTs, consult Milltronics.
11 14 12
111
6
122
7
133
8
14
15
16
17
4
9
5
10
18
V+
S+
S-
V-
SHLD
-LOAD CELL-
EXCITATION
LCA+
LCA-
LCB+
LCB-
SHLD
LCC+ SIG
LCC- COM
LCD+ CNST
LCD-
SHLD
-LOAD CELL INPUTS-
E
X
C
+
E
X
C
+
E
X
C
-
E
X
C
-
C
O
M
S
I
G
/
C
O
M
C.
T.
S
I
G
-
S
H
L
D
S
H
L
D
S
I
G
+
LV D T I N TE G R AT OR
RED
BLUE
YELLOW
GREEN
SF500
Integrator
Milltronics LVDT Conditioner Card
(in non-hazardous location)
*
**For Encapsulated LVDT (hazardous)
YEL = WHITE
BLU = ORANGE
GRN = YELLOW
**Junction box included with hazardous-rated unit.
*LVDT
**
♦Note:
1. Shields are common, but not grounded to chassis. Run cable shields through
SHLD terminals and ground at Integrator only.
2. Ensure that connection between TB 2 and TB 17 is made.
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Page 10 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Calibration
General
A Test Weight is a calibration reference used to simulate a material impact force (Test
Rate) on the flowmeter sensing plate during the integrator Span calibration. The test
weight is also used to perform a test to verify that the flowmeter sensing head is level.
The Test Rate should be 60 to 80% of the system Design Rate.
To determine the Test Rate produced by a specific Test Weight...
Test Rate (TPH) = Test Weight (grams)
45* grams/ TPH
Alternatively, to determine the Test Weight required for a specific Test Rate:
Test Weight (grams) = 45* grams x Test Rate (in TPH)
1TPH
*Use 60 grams for A-300 flowmeters.
e.g. If the Test Weight used with an E-300 flowmeter is 7000 grams...
Test Rate = 7000 grams = 155 TPH
45 grams/TPH
LVDT Output
Zero Adjustment
1. Connect a voltmeter across the LVDT green and yellow (or yellow and white) wires.
2. With no load applied to the sensing plate, observe 0.10 Vac on the voltmeter.
a.Loosen the locknut on the LVDT threaded core.
b.Turn the core in/out of the LVDT until 0.10 to 0.05 Vac is obtained.
c.Tighten the locknut, ensuring the measured value is maintained.
Note: Use metric tons per hour (t/h) or short tons per hour (STPH) as applicable for TPH.
Note: If the LVDT output is 0.10 to 0.05 Vac, skip to Span Test, otherwise, proceed as
follows:
LVDT
core
moving beam
locknut
increase decrease
LVDT
to integrator
LVDT EXC. or
LVDT conditioner
card
± 0.05 Vac
>± 0.05 Vac
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 11
Span Test
1. Gently push the sensing head moving beam to the right. The LVDT output should
increase steadily until a level of 0.75 to 1.0 Vac is achieved.
2. Gently push the sensing head moving beam to the left. The LVDT output should
decrease steadily until zero is reached and then increase to 0.25 to 0.50 Vac.
3. Ensure the LVDT output always returns to 0.10 to 0.05 Vac, (on the right hand side of
zero), when pressure on the moving beam is released.
Sensing Head Level Test
1. With the voltmeter still connected to the LVDT output, hang the test weight directly
off the sensing plate.
2. Observe the display value does not change by more than 0.01 Vac.
Note: The LVDT core must not contact the inside of the LVDT over the range of core
travel. The actual LVDT core travel during this procedure is less than 3 mm (1/8").
0 . 7 5 0
1 . 0 0 0 0 . 1 5 0
0 . 0 5 0 0 . 0 1 5
0 . 5 0 0
to to to
Note: If the change is greater than 0.01 Vac, adjust the sensing head level until the
change with and without the test weight on the sensing plate is less than 0.01 Vac.
Remove the test weight and readjust the LVDT Output Zero, if necessary. If this
procedure is performed after the integrator is calibrated, a new integrator Zero and
Span calibration, Span Adjust, and Factoring (if required) should be performed.
changes < 0.01 Vac
test weight
sensing plate
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Page 12 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Integrator Calibration
Refer to the flowmeter integrator instruction manual for integrator calibration
instructions.
To apply the Test Weight for the Span calibration:
1. Mount the calibration bracket (stored on the left side of the cast frame).
2. Attach one end of a string (monofilament fishing line or fine flexible cable) to the
Test Weight .
3. Route the other end of string over the calibration pulley.
4. Attach the free end of the string to the string fixing bolt. Ensure the string rests in the
bolt groove.
5. When the calibration is complete, return the calibration bracket to the storage
position.
Note: Ensure the Test Weight is suspended free from obstruction.
string fixing bolt
calibration arm
test weight
Note: Accurate calibration is not assured until material tests and a Span Adjust are
performed.
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 13
Maintenance and Spare Parts
Maintenance
A program of routine maintenance should be established to ensure the highest
achievable level of performance is maintained. Good housekeeping practices in the area
of the flowmeter are recommended.
Spare Parts
Milltronics recommends a spare inner and outer gasket, sensing plate, and spare
damping fluid be kept on hand.
Contact Milltronics or your distributor for spare parts ordering information.
Inner Gasket Placement
Should it ever be necessary to replace the sensing head inner gasket, refer to the
Installation and Figures sections of this instruction manual prior to performing the
following procedure.
1. Remove the ILE-61 fibreglass cover, (10 bolts).
2. Bolt down the viscous damper cover to the shipping position, (2 bolts).
3. Remove the sensing plate from the sensing head.
4. Remove the inner retaining ring, (6 bolts).
5. Remove the upper and lower hinge block bolts, (4 per block).
6. a. Hazardous versions, remove the LVDT core and LVDT, (3 bolts), or
b. Non Hazardous, remove the LVDT cable TY WRAPs (2) and disconnect LVDT
connections.
7. While supporting the main assembly, remove the secondary static beam bolts (3 per
side).
Maintenance Description Frequency
Regular Monthly Semi-Annual Annual
Clean area around flowmeter !!!!
Check sensing place surface* !! ! !
Check damping fluid !!!
Check sensing head inner gasket !!!
Check sensing plate wear !!!
Check test weight Rate display !!
Test flowmeter linearity !
* Material buildup (if any) in the impact area of the sensing plate should be removed.
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Page 14 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
8. Draw the main assembly away from the main frame.
9. Remove the outer retaining ring and inner gasket, (8 bolts).
10. Install the new inner gasket and reverse the procedure (steps 1 through 9).
11. Perform the LVDT output zero procedure.
12. Referring to the integrator instruction manual, perform an integrator Zero and Span
calibration. Perform a Span Adjust if calibration accuracy appears affected.
Note: The main assembly is heavy and awkward to handle; ensure it is
supported well.
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 15
Range Springs
General
The Range Spring establishes the range of sensing head moving beam travel for a given
range of material flow. This spring installed, is selected and positioned according to the
specified Design Rate of the application.
For best operation the range spring should provide 0.75 to 2.4 mm (0.030 to 0.094") of
moving beam travel from the static zero to the Design rate operation position. The moving
beam travel may be inferred by the value of the LVDT green and yellow (or yellow and
white) wires.
With the 2.5 Vac, 2.9 kHz LVDT excitation supplied:
• 0.75 mm of moving beam movement = 0.188 Vac
• 2.40 mm of moving beam movement = 0.600 Vac
Should the Design Rate of the flowmeter application change, it may be necessary to
reposition the original range spring, or select and install another range spring, to obtain
the optimum moving beam travel (LVDT output) range. Moving the range spring to a
location further away from the pivot point leaf spring, increases the maximum flowrate
capacity.
Range Spring Removal
1. Observe the range spring mounting position. (3 positions are available)
2. Loosen the range spring locknut.
3. Remove the range spring center bolt and 4 flange mounting bolts.
4. Remove the range spring from the range spring assembly.
Range Spring Replacement
1. Install the new range spring in the range spring assembly.
2. Mount the range spring assembly by the 4 flange mounting bolts.
3. With the moving beam in the static zero position, turn the range spring until the base
just touches the beam, and then turn 1 complete revolution more.
4. Install the range spring center bolt and tighten the range spring locknut.
Flowmeter Recalibration
After removing and replacing the range spring, the flowmeter and integrator should be
recalibrated.
1. Perform the LVDT output Zero procedure. Refer to Calibration.
2. Perform an integrator Zero and Span calibration. Refer to the integrator manual,
Calibration.
3. Perform a Span Adjust and Factoring as required. Refer to the integrator manual,
Calibration.
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Page 16 ILE-61 Sensing Head – INSTRUCTION MANUAL 7ML19981CX01
Troubleshooting
Every Millltronics ILE-61 Sensing Head is subjected to extensive quality assurance
procedures to ensure the highest degree of quality, reliability, and performance is
achieved.
The following listing indicates the probable cause, and proper course of action to be
taken should the specified fault symptom occur.
Symptom Cause Action
Integrator Rate display doesn’t
change when sensing plate is
moved
Wrong or bad integrator
connection
Viscous damper lid in ship-
ping position
Integrator not prepared for
operation
Refer to Fig. 4 - Integrator
LVDT Interconnection
Refer to Installation/ Viscous
Damper
Program and Calibrate the
integrator
Span adjustment does not
have enough range
Range spring not suited to
application Refer to Range Springs
Measurement results are not
repeatable
Sensing head not level
Moving beam is mechanically
limited
Leaf springs are damaged
Material flow patterns vary
Refer to Installation and
Calibration/Sensing Head
Level Test
Ensure moving beam does not
hit travel stops between -20%
and 150% flowrates
Replace leaf springs,
recalibrate flowmeter, and
integrator
Consult Siemens Milltronics or
your distributor
Accuracy varies with material
flowrate Non-linear operation Refer to Linearity
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7ML19981CX01 ILE-61 Sensing Head – INSTRUCTION MANUAL Page 17
Linearity
To test linearity, at least 3 test weights are used. Each weight represents a different Test
Rate. Record the integrator Rate display value associated with each test weight applied
to the flowmeter.
If all the recorded display values are accurate, the flowmeter measurement is linear.
e.g. For an E-300 flowmeter Design Rate of 200 TPH, the following three test weights
could be used:
• 9000 g (19.82 lb.) = 100% Design Rate = 200 TPH
• 6750 g (14.87 lb.) = 75% Design Rate = 150 TPH
• 4500 g (9.91 lb.) = 50% Design Rate = 100 TPH
If non-linear results are obtained, ensure:
• at no flow, the moving beam does not rest on the zero stop bolt.
• at 150% Design Rate, the moving beam does not reach the full flow stop bolt.
• at 150% Design Rate, the LVDT output does not exceed 1.0 Vac.
• the damper piston does not touch the damper cylinder wall at any flow rate.
• the LVDT core does not touch the inside of the LVDT at any flow rate.
• the viscous damper fluid is free of large air bubbles and the fluid level is correct.
• the range spring operates in compression from 0 - 150% flow rate.
• the sensing head leaf springs are in good condition.
If the test weight linearity test is successful, yet actual material test results are non-
linear, ensure there is no air circulation in the housing sensing plate area. If there is no
significant air circulation in the flowmeter housing while running material, the material
flow pattern is probably non-linear.
Non-linear material flow patterns can often be corrected by minor modifications to the
material infeed, or upstream piping. Some integrators are equipped with a linearization
function to compensate for non-linear material flow patterns. Stand alone linearizing
devices are also available for this purpose.
Note: Electronic linearization should not be used to correct non-linear test weight
results.
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ILE - 61 Sensing Head Outline and Mounting
Notes:
1. Refer to Flowmeter drawing for sensing head mounting hole to flowguide centre line dimension.
2. Sensing head support plate should be rigid and independent of flowmeter housing.
3. All dimensions in millimeters: ( ) denotes inches.
4. Ensure that the outer gasket seal to the Flowmeter housing wall is dust tight.
outer gasket
conduit entry
½” NPT internal
fibreglass cover
560
(22.05)
318
(12.52)
60
(2.36)
300
(11.81)
420
(16.54)
sensing
plate
see note 1
support plate
(by customer)
16 (0.63) dia.
(4 levelling rods) 560
(22.05)
500
(19.64)
490
(19.29)
340
(13.34)
380
(14.96)
as req’d 8 (0.31 dia. 18 bolts
on 460 (18.11) BCD.
(22.44)
outer
gasket
sensing head
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