Spirax Sarco ELM Assembly instructions

IM-P309-02 MI Issue 2 1
IM-P309-02
MI Issue 2
3090050/1
© Copyright 2014
Printed in GB
ELM
ElectroMagnetic Inductive Flowmeter
Installation, Operating and Maintenance Instructions
1. Introduction
2. Safety information
3. General product information
4. Steps prior to operation
5. Applications
6. Operational mode
and system design
7. Performance characteristics
and environmental conditions
8. Installation / conditions for use
9. Maintenance and repair
10. Dimensions and weight
11. Commissioning
12. System design
13.Congurationandoperation
14. Operating modes
15. ELM functions
16. Standard operating mode
17. Standards & Directives
18. Maintenance
19.Decontaminationcerticate
for device cleaning

IM-P309-02 MI Issue 22

IM-P309-02 MI Issue 2 3
This installation and operating manual explains how to operate, install and perform
maintenance on the flowmeter. Please read the manual carefully before installing
the device and putting it into operation. The manual does not apply to non-standard
versions or applications.
All devices are thoroughly tested and checked for order compliance prior to shipping.
Upon receipt of the device, check it for shipping damage.
If any problem comes to light, contact your local Spirax Sarco representative. Please
describe the problem and indicate type and serial number of the device. We extend
no guarantee of any kind for repair work that is undertaken without notifying us in
advance of the intention to carry out such work. Unless otherwise agreed, any part or
component for which a claim is lodged is to be sent to us for examination.
Safe operation of this unit can only be guaranteed if it is properly installed,
commissioned and maintained by a qualified person (see Section 1.11) in compliance
with the operating instructions. General installation and safety instructions for pipeline
and plant construction, as well as the proper use of tools and safety equipment must
also be complied with.
Supplier:
Spirax-Sarco Limited
Charlton House
Charlton Kings
Cheltenham
Glos
GL53 8ER
The product is designed and constructed to withstand the forces encountered during
normal use. Use of the product for any other purpose, or failure to install the product
in accordance with these Installation and Maintenance Instructions, could cause
damage to the product, will invalidate the marking, and may cause injury or fatality to
personnel.
The following conditions should be avoided as they may create interference above
the heavy industrial limits if:
- The product or its wiring is located near a radio transmitter.
- Cellular telephones and mobile radios may cause interference if used within
approximately 1 metre (39") of the product or its wiring. The actual separation
distance necessary will vary according to the surroundings of the installation and
the power of the transmitter.
If this product is not used in the manner specified by this IMI, then the protection
provided may be impaired.
1. Introduction
2. Safety information

IM-P309-02 MI Issue 24
Installation, commissioning, operating personnel
Mechanical and electrical installation, as well as commissioning,
maintenance and operation, are to be realized solely by qualified
personnel that are authorized by the installation operator to perform
such work. All such personnel must read and understand the content
of the applicable operating instructions before working with the device.
In general, follow the conditions and provisions applicable in your country.
The present document contains the information that you need in order to operate the
product described herein properly. The document is intended for use by qualified
personnel. This means personnel who are qualified to operate the device described
herein safely, including electronics engineers, electrical engineers, or service
technicians who are conversant with the safety regulations pertaining to the use
of electrical and automated technical devices and with the applicable laws and
regulations in their own country.
Such personnel must be authorized by the facility operator to install, commission and
service the product described herein, and are to read and understand the contents of
the present operating instructions before working with the device.
2.1 Hazard warnings
The purpose of the hazard warnings listed below is to ensure that device operators
and maintenance personnel are not injured and that the flowmeter and any devices
connected to it are not damaged.
The safety advisories and hazard warnings in the present document that aim to avoid
placing operators and maintenance personnel at risk and to avoid material damage
are prioritized using the terms listed below, which are defined as follows in regard to
these instructions herein and the advisories pertaining to the device itself.
2.2 Danger
means that failure to take the prescribed precautions will result in death, severe bodily
injury, or substantial material damage.
2.3 Warning
means that failure to take the prescribed precautions could result in death, severe
bodily injury, or substantial material damage.
2.4 Caution
means that the accompanying text contains important information about the product,
handling the product or about a section of the documentation that is of particular
importance.
Note means that the accompanying text contains important information about the
product, handling the product or about a section of the documentation that is of
particular importance.

IM-P309-02 MI Issue 2 5
2.5 Proper use of the device
Warning
The operator is responsible for ensuring that the material used in the
sensor and housing is suitable and that such material meets the
requirements for the fluid being used and the ambient site conditions.
The manufacturer accepts no responsibility in regard to such material
and housing.
Warning
In order for the device to perform correctly and safely, it must be shipped,
stored, set up, mounted, operated and maintained properly.
2.6 Returning your flowmeter for servicing or calibration
Before sending your flowmeter back to us for servicing or calibration, make sure it is
completely clean. Any residues of substances that could be hazardous to the
environment or human health are to be removed from all crevices, recesses, gaskets,
and cavities of the housing before the device is shipped.
Warning
The operator is liable for any loss or damage of any kind, including
personal injury, decontamination measures, removal operations and
the like that are attributable to inadequate cleaning of the device.
Any device sent in for servicing is to be accompanied by a certificate as specified in
Section 18!
The device is to be accompanied by a document describing the problem with the
device. Please include in this document the name of a contact person that our technical
service department can get in touch with so that we can repair your device as
expeditiously as possible and therefore minimize the cost of repairing it.
2.7 Replacement of the transmitter electronics
Before replacing the transmitter electronics, read the safety instructions in Section
10 Installation and servicing.
Warning
Make sure that you abide by the applicable standards and regulations
pertaining to electrical devices, device installation and process
technology when replacing the transmitter electronics. The highly
integrated electronic components in the device carry the risk of ESD
hazards and are only protected when installed in the device pursuant
to EMC standards.
The exchange of electronic components or board is described in details in Section 9
Maintenance and repair.

IM-P309-02 MI Issue 26
Caution
The complete insert is to be replaced with all of its printed boards (except
for the memory chip (DSM)). This is particularly important for the
explosion-prooftransmitter.Thespecifiedprecisionandinterchangeability
of the electronics are only guaranteed if the complete insert is replaced.
2.8 Intended purpose
The electromagnetic flowmeter is to be used solely for measuring the volume flow of
liquids, suspensions and pastes with conductivity ≥5 µS/cm (≥20 µS/cm demineralized
cold water). The manufacturer accepts no responsibility for any damage or loss
resulting from any other use or from improper use.
Before using corrosive or abrasive fluids, the operator must test the resistance of all
wetted materials. We will be happy to assist you in testing the corrosion resistance
of wetted parts (for special fluids including cleaning fluids). However, sole responsibility
for ensuring that the device is used in accordance with the manufacturer’s
recommendations rests with the system operator. Minor changes of temperature,
concentration or the degree of contamination in the process may cause changes in
corrosion resistance. The manufacturer accepts no responsibility for any damage
with respect to corrosion resistance of wetted materials in a certain application.
Intended use
Referring to the Installation and Maintenance Instructions, name-plate and Technical
Information Sheet, check that the product is suitable for the intended use/ application.
The product listed complies with the requirements of the European Pressure
Equipment Directive 97 / 23 / EC, carries the mark when so required. The product falls
within the following Pressure Equipment Directive categories:
Product Group 1
Gases
Group 2
Gases
Group 1
Liquids
Group 2
Liquids
ELM DN50 - - 2 -
ELM DN150 – DN200 - - 2 -
i) The ELM flow meter range has been designed for use on water / condensate which
are in Group 2 liquids of the above mentioned Pressure Equipment Directive. The
product’s use on other liquids in Group 1 or Group 2 may be possible but, if this is
contemplated, Spirax Sarco should be contacted to confirm the suitability of the
product for the application being considered.
ii) Check material suitability, pressure and temperature and their maximum
and minimum values. If the maximum operating limits of the product are lower
than those of the system in which it is being fitted, or if malfunction of the product
could result in a dangerous overpressure or overtemperature occurrence, ensure
a safety device is included in the system to prevent such over-limit situations.
iii) Determine the correct installation situation and direction of fluid flow.
iv) This product is not intended to withstand external stresses that
may be induced by any system to which they are fitted. It is the responsibility of
the installer to consider these stresses and take adequate precautions to minimise
them.
v) Remove all protective covers from all connections and protective packaging where
appropriate, before installation on high temperature applications.

IM-P309-02 MI Issue 2 7
2.9 Packaging, storaging, transport
Be careful not to damage the device while unpacking it. The device should be stored
in a clean, dry room until it is installed so as to prevent particulate matter from entering
the device. Make certain that the ambient temperature in the room in which the device
is stored lies within the prescribed range.
Check to ensure that the technical product data indicated on the delivery note is
consistent with the stipulated requirements. If, after the device is unpacked, it is sent
elsewhere to be installed, the original packaging and transport protection inserts
should be used.
2.10 Returning the device for repair and servicing
Note: According to German waste disposal legislation, it is the owner’s or customer’s
responsibility to dispose of hazardous waste. Thus, any devices sent to us for servicing,
including their crevices and cavities, must be devoid of any such material.
When sending a device for repair, please confirm your compliance with this regulation
in writing. In the event any hazardous material is detected on or inside any device sent
to us for servicing, we reserve the right to bill the customer for the cost of disposing
of such material (see Section 19"Decontamination certificate").

IM-P309-02 MI Issue 28
The rating plate states the following information:
Fig. 1 Transmitter Label
Logo Supplier’s logo
CE CE Marking in accordance with
the applied EC Directives
Type Type designation
Ser. No. Serial number (for tracking reasons)
Tag No. Operator’s measuring point
number (if stated in the order)
MF-Date Year of manufacture
DN Flange designation
PN Pressure stage of flange
Materials
Material of wetted parts such as
pipe lining, material of electrodes
and seal
T m Medium temperature range
T amb Ambient temperature range
C Sensor constant
Degrees
of
protection
Degrees of protection in
accordance with DIN EN
60529:2000
3.1 Manufacturer
Manufactured for Spirax Sarco by Heinrichs Messtechnik GmbH
Robert-Perthel-Str. 9 · D-50739 Köln
Telephone: [phone] – 0, Fax: [phone] - 178
Internet: http://www.heinrichs.eu, Email: mailto:[email protected]
3.2 Product type
Magnetic-inductive flowmeter based on Faraday’s law of induction
3.3 Product name
ELM
3.4 Designation/rating plate
3. General product information
Fig. 2 Main Label

IM-P309-02 MI Issue 2 9
It is essential that you read these operating instructions before installing and
operating the device. The device is to be installed and serviced by a qualified
technician only.
No instructions, wiring diagrams, and/or supplied software, or any portion
thereof, may be produced, stored, in a retrieval system or transmitted by any
means, electronic, mechanical, photocopying or otherwise, without prior written permission.
Although the materials in the present document were prepared with extreme care, errors
cannot be ruled out. Hence, neither the company, nor the programmer nor the author can be
held legally or otherwise responsible for any erroneous information and/or any loss or damage
arising from the use of the information enclo
No express or implied warranty is extended in regard to the applicability of the present
document for any purpose other than that described.
We plan to optimize and improve the products described and in so doing will incorporate not
only our own ideas but also, and in particular, any suggestions for improvement made by our
customers.
We reserve the right to change the technical data in this manual in the light of
any technical progress that might be made.
4. Steps prior to operation
Theelectromagneticowmeterisusedtomeasureormonitorthevolumeowofuidswith
and without solids concentration, slurries, pastes and other electrically conductive media
while minimizing pressure drops. The conductivity of the medium must be at least 5 µS/cm.
Pressure, temperature, density and viscosity do not affect the volume measurements. Small
quantities of solid particles and small gas pockets are also measured as part of the volume
ow.Alargernumberofsolidparticlesorgaspocketswillresultinfailuresand/orinaccuracy
of measurement.
5. Applications

IM-P309-02 MI Issue 210
6.1 Operational mode
In 1832 Faraday suggested utilizing the principle of electrodynamic induction for measuring
owvelocities.HisexperimentsintheThames,thoughunsuccessfulduetosuperimposed
polarizationeffects,arenonethelessregardedastherstintheeldofmagnetic-inductive
owmeasurement.AccordingtoFaraday'slawofelectromagneticinduction,anelectrical
eldEisproducedinaconductiveliquidmovingthroughamagneticeldBat a velocity v in
accordance with the vector product E = [v x B].
AuidwithaowvelocityvandaowrateQowingthroughatube(1) with an insulating
lining (2) produces a measuring-circuit voltage Um at the two electrodes (4) at right angles
tothedirectionofowandthemagneticeldBgeneratedbytheeldcoils(3). The strength
ofthismeasuring-circuitvoltageisproportionaltothemeanowvelocityandthereforethe
volumeowrate.
6.2 System design
The electromagnetic ELM-*** owmeter consists of a sensor, which picks up an induced
m e a s u r i n g s i g n a l f r o m t h e m e d i u m  o w i n g t h r o u g h t h e p i p e , a n d a t r a n s m i t t e r w h i c h t r a n s f o r m s 
this signal into standardized output signals (4-20 mA or pulses). The sensor is installed in the
pipe while the transmitter is mounted directly on the sensor.
6. Operational mode and
system design
B
3
B
Q
D
UM
4
1
UM
V
2
Fig. 3

IM-P309-02 MI Issue 2 11
7.1.2 Repeatability
+/- [0.15% of actual value + 0.00005 * (Q at 10 m/s)]
7.1.3 Reference conditions
In accordance with DIN EN 29104
Fluid temperature 22°C ± 4 K
Ambient temperature 22°C ± 2 K
Inletsectionof≥10xDNandoutletsectionof≥5xDN
7.2 Fluid conductivity
≥5µS/cm(≥20µS/cmfordemineralizedwater)
7.3 Influence of ambient temperature
-20°C to +60°C
7.4 Ambient temperature
- 20° Celsius to + 60°Celsius (-4°F to 140°F), below 0degC the readability of the LC display
will be limited
7.1 Measuring accuracy
7.1.1 Measured error
+/- [0.3% of actual value + 0.0001 * (Q at 10 m/s)]
7. Performance characteristics
and environmental conditions
Accuracy
Flow velocity v [m/s]
Fig. 4

IM-P309-02 MI Issue 212
Caution:
Ingress protection IP 68 is only achieved if suitable and tightly
screwed down cable glands or conduits are used. If the cable
glands are only tightened manually water may leak into the
terminal compartment in the housing.
Danger:
Particular care must be taken if the window in the housing
becomes fogged over or discolored because moisture, water or
product might seep through the wire sheath into the terminal
compartment in the housing!
Warning:
Electromagnetic compatibility is only achieved if the electronics
housing is closed. Leaving the enclosure open can lead to
electromagnetic disturbances.
7.5 Ambient temperature range
-20°Celsius to + 60°Celsius (-4°F to 140°F)
In the case of an outdoor installation, the device must be protected against direct solar
irradiation with a weather shield.
7.6 Storage temperature
- 25°Celsius to + 60°Celsius (-13°F to 140°F)
7.7 Degree of protection
SG2b standard housing, IP68 (NEMA 6P).

IM-P309-02 MI Issue 2 13
7.8 Process conditions
7.8.1 Fluid temperature
The data sheet/rating plate of the connected transmitter must be observed. With directly
mounted transmitter on the sensor the heat entry must be considered from the process to
the transmitter.
7.8.2 State of aggregation
Liquid
7.8.3 Viscosity
No restrictions.
The data sheet/rating plate of the connected transmitter must be observed.
7.8.4 Fluid temperature limit
The data sheet/rating plate of the connected transmitter must be observed.
medium and the cleanliness of the electrodes.
7.8.5 Flow rate limit
The data sheet/rating plate of the connected transmitter must be observed.
7.8.6 Pressure loss
The data sheet/rating plate of the connected transmitter must be observed.
7.8.7 Empty pipe detection
Transmitters, which are equipped with a control unit BE3, have an on and off switch able empty
pipe detection. The operating reliability depends on the conductivity of the liquid medium and
the cleanliness of the electrodes.
7.9 Materials
7.9.1 Wetted parts
Parts Standard
Lining PTFE
Measuring and grounding electrodes St. st. 1.4571, Hastelloy C4
7.9.2 Non-wetted parts
Parts Standard
Flow tube Stainless steel 1.4571
Housing St. st. 1.4571, Hastelloy C4
DN 10 – 300 Varnished steel
Flange Varnished steel
Terminal box for remote mount transmitter Aluminum pressure casting, varnished

IM-P309-02 MI Issue 214
8.1 Receipt of goods and transport
8.1.1 Receipt of goods
Check the packaging and contents for damage.
Inspect the supplied goods to ensure complete delivery and compare the consignment with
your order specifications.
8.1.2 Transport
The protection caps should only be removed immediately before installation of the device
in the pipe.
Never lift the devices by the mounted transmitter housing or terminal box for transport. When
transporting heavy devices, use slings. Place these around both process connections. Do
not use chains as these can damage the surface coating and the housing.
When transporting devices without lugs, and when looping the slings around the flow tube,
the center of gravity of the entire device can be higher than both attachment points of the
slings. When transporting the device ensure that it does not rotate or slip accidentally. This
could cause injury.
Sensors with a nominal width of more than DN 150 should not be lifted by the sheet metal
of the shell with a forklift truck. This could dent the sheet metal of the shell and damage the
internal solenoid coils. There is also the risk that the device could roll off the forks.
8. Installation/conditions for use
Fig. 5

IM-P309-02 MI Issue 2 15
8.2 Installation conditions
The installation location in the pipe must be selected so that the sensor is always fully
filled with the fluid and cannot run empty. This can best be guaranteed if it is installed in an
ascending pipe or drain.
The measuring principle is generally independent of the flow profile of the fluid provided no
standing vortices reach into the area where the value is measured, such as downstream
from elbows or half-open sliding valves upstream from the sensor. In these cases measures
must be taken to normalize the flow profile. Practical experience ¬has shown that in most
casesastraightinletsectionof≥5xDNandanoutletsectionof≥2xDNoftheratedwidth
of the sensor is sufficient. The occurrence of strong electromagnetic fields in the vicinity of
the installed sensor is not permitted.
In order to be able to perform flow and return measurements, both sides of the sensor must
be provided with a straight pipe section with the rated width of the sensor and a length of 5
DN of the rated width of the sensor. It is advisable to install actuators, such as regulating or
shut-off devices, downstream from the sensor. The flow direction is marked on the sensor
with an arrow. When mounting sensors, always observe the specified screw torques.
The electrical system can be taken into operation when the sensor and the cables have been
installed and connected. In order to prevent measuring errors caused by gas pockets in the
fluid and damage lining of the sensor caused by negative pressure, the following points must
be observed.
8.2.1 Long pipe systems
As pressure surges may occur in long pipes systems, the regulating and shut-off devices
must be installed downstream from the sensor. When mounted in vertical pipes - in particular
in flow tubes with PTFE lining and in case of higher operating temperatures - the regulating
and shut-off devices must be installed upstream from the sensor. (Danger of vacuum might
be involved!)
8.2.2 Pumps
Do not mount the sensor on the suction side of a pump. (Danger of vacuum!)
8.2.3 Bypass
In order to easily dismount, empty and clean the sensor, a bypass pipe may be installed. The
bypass with a blind flange permits the fluid pipe to be cleaned without having to dismount the
flowmeter. This is recommended for highly soiling fluids.
8.2.4 Flow tube lining
As the flow tube is lined with PTFE, the flowmeter must be installed with special care. The tube
lining is bordered at the flanges (seal). This must not be damaged or removed as it prevents
the fluid from penetrating between flange and flow tube destroying the electrode insulation.

IM-P309-02 MI Issue 216
Caution!
Do not use conductive sealing compounds such as graphite. This could
result in a conductive layer on the inside of the flow tube that short-
circuits the measuring signal.
8.3.1 Installation in pipes with larger nominal sizes
The flowmeter can also be installed in pipes with larger nominal sizes by using pipe tapers
(e.g. flange transition pieces in accordance with DIN EN 545). However, the resulting pressure
loss must be taken into consideration. In order to avoid flow interruptions in the flow tube, a
reducingangle≤8°forthetapersshouldbeadheredto.
8.3.2 Horizontal and vertical installation
The flowmeter can be installed wherever required, whereby the intended x-y electrode axis
should run almost horizontal. A vertical Electrode axis should be avoided as otherwise the
accuracy could be affected by the gas pockets or the solid particles in the fluid.
Incorrect installation
for horizontal pipe system
Correct installation system
8.3 Installation
Screws, bolts, nuts and seals are not supplied and must therefore be provided by the operator.
Install the sensor between the pipes. Please observe the required torques stated Section
8.3.4. The installation of additional grounding rings is described in Section 8.3.3. Use for
the flanges only seals in accordance with DIN 2690. Mounted seals must not reach into the
pipe cross section.
X
X
Y
Y
Fig. 6

IM-P309-02 MI Issue 2 17
Installation examples
In order to avoid measuring errors caused
by gas pockets and lining damage caused
by negative pressure, the following points
must be observed:
Free inlet or outlet section
Preferably install the device in a drain.
The empty pipe detection circuit in the
transmitter is an additional safety feature
for recognizing empty or partially filled
pipes.
Fall pipe over five meters long
In case of fall pipes that are more than
five meters long, arrange for a syphon or a
venting valve in order to avoid a negative
pressure in the pipe and damage to the
lining. In addition, this measure prevents
the flow from stopping so that air pockets
can be avoided.
Highest point in pipe system. Air bubbles
will accumulate in the tube. Incorrect
measurement!
Caution! There is the danger of
accumulations of solids in the drain. It is
advisable to arrange for a cleaning aperture
in the pipe.
Horizontal lining
Installation in a slightly ascending pipe.
> 5m
Fig. 7
Preferred assembly locations
Fig. 10
Fig. 9
Fig. 8

IM-P309-02 MI Issue 218
Long pipes
Always install regulating and shut-off devices downstream from the sensor.
(Danger of vacuum!)
Installation of pumps
Do not install flowmeters on the suction side of pumps in order to avoid a negative pressure
and damage to the tube lining.
If necessary, arrange for pulsation dampeners when using piston, diaphragm or hose pumps.
Please consider space requirements with respect to a potential uninstallation of
the device.
8.3.3 Grounding
For safety reasons and to ensure faultless operation of the electromagnetic flowmeter, the
sensor must be grounded. In accordance with VDE 0100 Part 410 and VDE 0100 Part 540 the
grounding connections must be at protective conductor potential. For metrological reasons,
the potential should be identical to the potential of the fluid. The grounding cable should not
transmit any interference voltage. For this reason do not ground other electrical devices with
this cable at the same time.
The measuring signal tapped at the electrodes is only a few millivolts. Correct grounding of
the electromagnetic flowmeter is therefore an important prerequisite for exact measurement.
The transmitter requires a reference potential to evaluate the measured voltage on the
electrodes. In the simplest case the non-insulated metal pipe and/or the connecting flange
may be used as a reference potential.
In case of pipes with an electrically insulating lining or pipes made of plastic, the reference
potential is picked up from a grounding electrode. This establishes the necessary conductive
connection to the fluid and is made of a chemical-resistant material.
The grounding cables are not included in the scope of supply and must be provided by the
plant operator.
Fig. 11
Fig. 12

IM-P309-02 MI Issue 2 19
8.3.3.1 Grounding the ELM flowmeter
Earth bonding
- Uninsulated metal pipes only (not
required for plastic pipe installations)
Ground Wire:
Min 4mm2Cu
Protective
Earth
Seal
Pipe
Flanges
Seal
Pipe PipeELM
Fig. 13

IM-P309-02 MI Issue 220
8.3.4 Torques for studs and nuts
Electromagnetic flowmeters must be installed in the pipe system with special care due to the
fact that the flow pipe lining is made of PTFE which is malleable under pressure.
If the flange nuts are tightened too much, the sealing surface will deform. If the seals are
supposed to function properly, the correct torque is highly important.
Tighten the nuts crosswise, so that the process connections are tight. When tightening the
nuts for the first time, approximately 50% of the required torque should be reached, and for
the second time, the torque should be 80%. The required torque should reach 100% when
the nuts are tightened for the third time. For higher torques it is advisable to use protectors.
The following tables state the maximum torques:
Nominal size
(mm)
DIN Pressure
rating (bar)
Studs Maximum torques
(Nm)
DN25 PN40 4 x M12 25
DN32-40 PN40 4 x M16 45
DN50 PN40 4 x M16 65
DN65 PN16 4 x M16 85
DN80 PN16 8 x M16 55
DN100 PN16 8 x M16 55
DN150 PN16 8 x M20 100
DN200 PN16 12 x M20 95
Nominal size
(inch)
ASME Pressure
rating (lbs)
Studs Maximum torques
(Nm)
1" Class 300 4x⅝" 15
1 ¼"-1 ½" Class 300 4 x ¾" 35
2" Class 300 8x⅝" 25
2 ½" Class 150 4x⅝" 85
3" Class 150 4x⅝" 80
4" Class 150 8x⅝" 55
6" Class 150 8 x ¾" 105
8" Class 150 8 x ¾" 145