PENBERTHY FLAT GLASS AND MAGNETIC GAGE ILLUMINATORS
InstallatIon, operatIon and maIntenance InstructIons
Before installation these instructions must be read fully and understood
TABLE OF CONTENTS
Product warranty ................................................ 1
1. About the manual .......................................... 2
2. Introduction ................................................... 2
2.1 System description ................................. 2
3. Available models ........................................2-3
3.1 Approvals ................................................ 3
3.2 AC design voltage ratings ...................... 3
3.3 Steam application ................................... 3
4. Inspection ...................................................... 4
4.1 User's rating inspection ......................... 4
5. Installation ..................................................4-6
5.1 Inspection and cleaning of glass ........... 4
5.2 Installation of unit to gage ..................... 5
5.3 Electrical installation ............................. 6
6. Operation ....................................................... 6
7. Maintenance .................................................. 6
7.1 Preventative maintenance ..................... 6
7.2 Accessing maintenance items .............. 6
7.3 Maintenance procedures ....................... 6
7.4 Troubleshooting ..................................... 6
8. Removal - disassembly - reassembly ......7-8
8.1 Disassembly ........................................... 7
8.2 Reassembly ........................................... 7
9. Disposal at end of useful life ........................ 8
10. Telephone assistance ................................... 8
11. Exploded parts diagrams .........................9-11
Tables and figures
Table 1 Magnetic gage frost proof
illuminator .......................................... 2
Table 2 Optional model structure .................. 3
Table 3 Design voltage ratings ....................... 3
Table 4 Accessing maintenance items .......... 6
Figure 1 Side view of illuminator installation .. 4
Figure 2 Top view of illuminator installation ... 4
Figure 3 Nut loosening sequence .................... 7
Figure 4 Nut tightening sequence ................... 8
Figure 5 Parts - flat glass illuminator ............. 9
Figure 6 Parts - magnetic gage illuminator.. 10
Figure 7 Installation of illuminator to
reflexgage ........................................ 11
Product warranty
Emerson warrants its Penberthy products
as designed and manufactured to be free
of defects in the material and workmanship
for a period of one year after the date of
installation or eighteen months after the date
of manufacture, whichever is earliest. Emerson
will, at its option, replace or repair any products
which fail during the warranty period due to
defective material or workmanship.
Prior to submitting any claim for warranty
service, the owner must submit proof of
purchase to Emerson and obtain written
authorization to return the product. Thereafter,
the product shall be returned to Emerson, with
freight paid.
This warranty shall not apply if the product has
been disassembled, tampered with, repaired or
otherwise altered outside of Emerson factory,
or if it has been subject to misuse, neglect or
accident.
The responsibility of Emerson hereunder is
limited to repairing or replacing the product
at its expense. Emerson shall not be liable
for loss, damage or expenses related directly
or indirectly to the installation or use of
its products, or from any other cause or
for consequential damages. It is expressly
understood that Emerson is not responsible
for damage or injury caused to other products,
buildings, personnel or property, by reason of
the installation or use of its products.
This is Emerson's sole warranty and in lieu of
all other warranties, expressed or implied which
are hereby excluded, including in particular all
warranties of merchantability or fitness for a
particular purpose.
This document and the warranty contained
herein may not be modified and no other
warranty, expressed or implied, shall be made
by or on behalf of Emerson unless made in
writing and signed by the company's general
manager or director of engineering.
Emerson.com/FinalControl © 2017 Emerson. All rights reserved. VCIOM-04037-EN 18/03
PENBERTHY FLAT GLASS AND MAGNETIC GAGE ILLUMINATORS
InstallatIon, operatIon and maIntenance InstructIons
1 ABOUT THE MANUAL
This manual has been prepared as an aid and
guide for personnel involved in installation or
maintenance. All instructions must be read and
understood thoroughly before attempting any
installation, operation or maintenance.
SAFETY INSTRUCTIONS
Emerson does not have any control over the
manner in which its illuminators are handled,
installed or used and Emerson cannot and does
not warrant or guarantee that an illuminator is
suitable for or compatible with the user's specific
application.
WARNING
Vessel fluids may be pressurized in the gage on
which the illuminator is being attached.
Fluids can exit vessel connections unexpectedly
due to apparatus or material failure. Safety
glasses should be worn when installing an
illuminator. Failure to follow any instruction could
possibly result in a malfunction of the illuminator
resulting in a loss of ability to read fluid level or
failure of the liquid level gage resulting in leakage
causing serious personal injury, electric shock or
property damage.
2 INTRODUCTION
Penberthy illuminators are designed to be
mounted readily and able to fit channelled
indicator assemblies on Penberthy Multiview™
magnetic liquid level meters and any style
Penberthy flat glass liquid level gage.
Single and double section illuminators provide
uniform light distribution over the entire length
of the liquid level gage assemblies.
Single illuminators for Multiview™ magnetic
gages are constructed in lengths up to four
feet. Two illuminators can be butted against
one another to cover up to eight feet in length
continuously.
2.1 System description
Penberthy illuminators comprise four basic
components. Use the exploded parts view in
Section 11 as additional reference material.
Illuminator body/cover: a rigid, aluminum
protective structure that supports and houses
the illuminating elements of the illuminator.
The reflector wedge is positioned between the
cover and body by a bolting system such that
the light dispersion is maximized.
Illuminator housing: provides the electrical
connection from the power source to the
lamp. Located within the illuminator body, the
housing holds the lamp in position.
Reflector wedge: machined and polished
PMMA light guide. Used to channel light from
the lamp into a long plane (light bar).
Brackets (flat glass gage only): use a bolting
system to mount illuminator to the flat glass
gage cover. Bolts pass through the reflector
wedge to affix the illuminator to the centerline
of gage vision (transparent style gage only).
3 AVAILABLE MODELS
Penberthy flat glass gage illuminators are
available in single section units, double
section units and in combinations of single and
double section units for three or more section
gages. Single and double section frost proof
illuminators can be used in flat glass cryogenic
applications.
Wedge depth is a critical factor when applying
an illuminator in cryogenic applications. If
the depth is too shallow, frost may build up
on the end of the wedge making it difficult or
impossible to read the fluid level.
Optional structure
The standard illuminator rating is 60 watts at
115 Vac. Other illuminators are listed in the
options in Table 2.
TABLE 1 - MAGNETIC GAGE FROST PROOF ILLUMINATOR
Minimum wedge depth Lowest temperature
4" (100mm) -94°F ( -70°C)
6" (150 mm) -148°F (-100°C)
8" (200 mm) -211°F (-135°C)
10" (250 mm) -274°F (-170°C)
12" (300 mm) -328°F (-200°C)
2
PENBERTHY FLAT GLASS AND MAGNETIC GAGE ILLUMINATORS
InstallatIon, operatIon and maIntenance InstructIons
TABLE 2 - OPTIONAL MODEL STRUCTURE
Example: I D S N 7 N 1 6
I Illuminator
S Single section flat glass
D Double section flat glass
M Magnetic gage (inch incr)
S Standard extension
F Frost extension
4, 6, 8, A(10), C(12)
N (not applicable - standard extension) = WEDGE DEPTH (mag gage only) (inch)
refer to Table 1
Glass size (1, 2, 3…, 9); mag gage indicator length (tens digit of inches; e.g., 24 inches
use "2", max. 48 inches)
N (not applicable - if flat glass); mag gage indicator length (unit digit of inches; e.g., 24 inches
use "4", max. 48 inches)
1 115 V AC standard thread 1” NPTF B 230 V AC ISO thread M20 X 1.5
A 115 V AC ISO thread M20 X 1.5 4 24 V DC standard thread 1” NPTF
2 230 V AC standard thread 1” NPTF D 24 V DC ISO thread M20 X 1.5
2 25 W – pigtail leads 6 60 W – pigtail leads
3 25 W – terminal block 7 60 W – terminal block
Example: standard illuminator for double section size 7 flat glass gage (2TM7) with 60 watt bulb and 115 volt
service.
3.1 Approvals
Units are explosion proof FM approved CSA certified Ex d
Division 1 and 2 Division 1 and 2
Class I: B, C, D Class I: B, C, D
Class II: E, F, G Class II: E, F, G
Class III, Type 4 Class III, Type 4
CENELEC
EExd IIB + H2 T4 IP66
3.2 AC Design voltage ratings
TABLE 3
Illuminator nominal rating Applicable voltage range
115 V AC 108 Vac - 125 V AC
230 V AC 207 Vac - 250 V AC
To determine the maximum allowable voltage within the design limits stated in the tables, the
user should consult the lamp manufacturer or, when provided, the specifically stated design limits
on a product proposal.
DANGER
NEVER exceed these design ratings or application data. Exceeding design ratings or application data
may result in creating excessive heat and potential ignition of volatile fluids that could cause death,
serious personal injury and/or property damage.
3.3 Steam application
Penberthy light guides are constructed of PMMA which has a degradation temperature of
225°F (107°C). Should an illuminator be purchased for steam or other high temperature
application gage usage, the steam or process temperature must be low enough and/or a cooling
system must be used to maintain 225°F (107°C) or less at illuminator surfaces.
3
PENBERTHY FLAT GLASS AND MAGNETIC GAGE ILLUMINATORS
InstallatIon, operatIon and maIntenance InstructIons
4 INSPECTION
Operational note: exercise care in handling
illuminator parts to avoid scratching, denting,
or otherwise damaging the polished edge of
the reflector wedge. Any marks on the polished
edge, as well as dirt, paint or tape will result in
a reduction of light output.
Upon receipt of an illuminator, check all
components carefully for damage incurred in
shipping. If damage is evident or suspected,
do not attempt installation. Notify the carrier
immediately and request damage inspection.
Refer to the exploded view drawing in
Section11 to inventory parts.
4.1 User’s rating inspection
The user should confirm that:
1. The illuminator size, rating and model
number stamped on nameplate (163)
conforms to the description on the user’s
purchase order.
2. The operating conditions described in
the purchase order agree with the actual
operating conditions at the installation site.
3. The actual operating conditions at the
installation site are within the application
data shown on the relevant technical data
sheet or product proposal referred to
previously.
4. The materials of construction of the
illuminator are compatible with the
surrounding atmosphere in the specific
application.
SAFETY INSTRUCTIONS
If the size, model or performance data of the
illuminator as received does not conform with
any of the criteria above, do not proceed with
installation. Contact an authorized Penberthy
distributor for assistance. The incorrect
illuminator voltage can result in unacceptable
performance and potential damage to the
illuminator.
5 INSTALLATION
Installation should only be undertaken by
qualified personnel who are familiar with this
equipment.
They should have read and understood all
of the instructions in this manual. The user
should refer to relevant technical data sheets
or product proposal to obtain dimensional
information for the specific size and model
illuminator.
Illuminator installation
Refer to Figures 1 and 2.
It is the user's responsibility to assure that
knowledgeable installation personnel plan and
carry out the installation in a safe manner.
The following procedures are some of the
guidelines that should be employed:
5.1 Inspection and cleaning of glass
Prior to installation of an illuminator to a gage,
the gage glass should be cleaned and inspected
per instructions as follows:
1. Clean glass within vision slot using a nonabrasive household cleaner. DO NOT use
a wire brush, metal scraper or any device
which could scratch the glass.
2. Inspect the surface of the glass for any
signs of clouding, etching, scratching or
physical damage such as bruises, checks or
erosion that penetrates the outer surface of
the glass. Shining a light at approximately a
45° angle will aid in detecting some of these
conditions. Light will glisten more brightly
on glass imperfections than the surrounding
glass when reflecting light. Detection of
any such problem areas or surface wear
is sufficient evidence of damage. Do not
proceed with installation with damaged
glass. See appropriate Installation,
Operation and Maintenance manual and
replace glass.
FIGURE 1
FIGURE 2
Side view Top view
4
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