Endress+Hauser LT5 User manual

Products Solutions Services
Operating Instructions
LT5
Float level gauge
0
9 0 1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
1
2
3
4
BA01264G/00/EN/05.19
71470634
2019-12-20

LT5
2 Endress+Hauser
Order code:
Ext. ord. cd.:
Ser. no.:
www.endress.com/deviceviewer Endress+Hauser
Operations App
XXXXXXXXXXXX
XXXXX-XXXXXX
XXX.XXXX.XX
Serial number
1.
3.
2.
A0023555

LT5 Table of contents
Endress+Hauser 3
Table of contents
1 About this document ................ 4
1.1 Document function ..................... 4
1.2 Symbols .............................. 4
1.3 Related documentation .................. 6
2 Basic safety instructions ............ 7
2.1 Requirements for personnel ............... 7
2.2 Designated use ........................ 7
2.3 Workplace safety ....................... 7
2.4 Operational safety ...................... 8
2.5 Product safety ......................... 8
3 Product description ................. 9
3.1 Designated use ........................ 9
3.2 Technical data ......................... 9
3.3 List of material specifications ............. 11
3.4 Delivery examples ..................... 12
4 Incoming acceptance and product
identification ..................... 13
4.1 Incoming acceptance ................... 13
4.2 Product identification .................. 13
4.3 Manufacturer contact address ............ 14
4.4 Storage and transport .................. 14
5 Installation ....................... 15
5.1 Installing LT5 ........................ 15
5.2 Installation preparation ................. 21
5.3 Tools ............................... 22
5.4 Welding for gauge supporter ............. 23
5.5 Guide pipe ........................... 25
5.6 Top anchor and anchor hook installation .... 27
5.7 Measuring tape and wire lengths .......... 28
5.8 List of sealing materials ................. 31
5.9 Inspection certificate ................... 32
5.10 General view of standard specifications and
order codes .......................... 33
5.11 Guide wire installation .................. 53
5.12 Measuring tape and measuring wire
installation .......................... 55
5.13 Liquid sealant for seal pot ............... 64
6 Setting ........................... 68
6.1 Dial display .......................... 68
6.2 Counter display ....................... 69
6.3 Indicator adjustment ................... 70
6.4 Handling precautions for water-filling/
airtightness tests and initial operation of the
gauge .............................. 75
7 Operation ......................... 76
7.1 Using a check handle ................... 76
7.2 Using a hoist handle ................... 76
8 Diagnostics and troubleshooting ... 79
8.1 General troubleshooting ................. 79
9 Maintenance ...................... 80
9.1 Maintenance work ..................... 80
9.2 Routine checks ........................ 81
9.3 Replacement of o-ring in the transmitter
(LT5-4/LT5-6) ....................... 82
9.4 Drive checker replacement (LT5-4/LT5-6) ... 83
10 Repair ............................ 85
10.1 General information on repairs ............ 85
10.2 Spare parts .......................... 85
10.3 Endress+Hauser services ................ 85
10.4 Return .............................. 86
10.5 Disposal ............................ 86
11 Accessories ....................... 87
11.1 Hoist handle ......................... 87
11.2 Seal pot ............................. 88
11.3 Gauge supporter ...................... 89
11.4 Guide pipe ........................... 91
11.5 Installation / enclosed accessories ......... 92
11.6 Anchor weight ........................ 93
11.7 Wire guide metal and wire guide socket ..... 94
Index .................................. 95

About this document LT5
4 Endress+Hauser
1 About this document
1.1 Document function
These Operating instructions contain all the information required during various phases of
the life cycle of the device: from product identification, incoming acceptance and storage,
to mounting, connection, operation and commissioning through to troubleshooting,
maintenance and disposal.
1.2 Symbols
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in serious or fatal injury, as well as a risk of fire or explosion.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in a risk of serious or fatal injury, fire or explosion.
CAUTION
Note
This symbol alerts you to a dangerous situation. Failure to avoid this situation will
result in a risk of minor or moderate injury and damages to property.
NOTICE
NOTE!
This symbol contains information on procedures and other facts that do not result in
personal injury.
1.2.2 Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal that, as far as the operator is concerned, is grounded via a
grounding system
Protective ground connection
A terminal that must be connected to the ground prior to establishing any other
connections
Equipotential connection
This connects with the grounding system at the plant. It includes equipotential line
and single-point ground systems, depending on the norms of each country or
company.

LT5 About this document
Endress+Hauser 5
1.2.3 Tool symbols
Symbol Meaning
A0013442
Torx screwdriver
A0011220
Flat-blade screwdriver
A0011219
Phillips screwdriver
A0011221
Allen key
A0011222
Hexagonal wrench
1.2.4 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted
Preferred
Procedures, processes or actions that are preferred
Forbidden
Procedures, processes or actions that are forbidden
Tip
Indicates additional information
Reference to documentation
A
Reference to page
Reference to graphic
Notice or individual step to be noted
1.
,
2.
,
3.
… Series of steps
Result of operation or commissioning
Help in the event of a problem
Visual inspection
Operation via local display
Operation via operating tool
Write-protected parameter

About this document LT5
6 Endress+Hauser
1.2.5 Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
1.
,
2.
,
3.
… Series of steps
A, B, C, ... Graphics
A-A, B-B, C-C, ... Cross-sections
-
Hazardous area
Indicates a hazardous area
.
Safe area (non-hazardous area)
Indicates a non-hazardous area
1.2.6 Device symbol
Symbol Meaning
Safety instructions
Observe the safety instructions contained in the associated operating instructions.
Temperature resistance of the connection cables
Specifies the minimum value of the temperature resistance of the connection cables.
1.3 Related documentation
For an overview of the scope of the relevant technical documentation included with
the product, refer to the following:
The W@M Device Viewer: Enter the serial number from the nameplate
(www.endress.com/deviceviewer).
1.3.1 Technical information (TI)
Technical information contains all the technical data on the device and provides an
overview of the accessories and other products that can be ordered for the device.
Device Technical information
Float level gauge LT5 TI01167G
1.3.2 Operating instructions (BA)
Operating instructions contain all the information required during various phases of the
life cycle of the device: from product identification, incoming acceptance and storage, to
mounting, connection, operation and commissioning through to troubleshooting,
maintenance and disposal.
Operating instructions also contain detailed descriptions of each parameter in the
operation menu. These descriptions are targeted for those who work with the device over
its entire life cycle and perform specific commissioning.
Device Operating instructions
Float level gauge LT5 BA01264G

LT5 Basic safety instructions
Endress+Hauser 7
2 Basic safety instructions
2.1 Requirements for personnel
The personnel for installation, commissioning, diagnostics and maintenance must fulfill
the following requirements:
‣Be specialists who are trained and have a relevant qualification for this specific
function and task.
‣Be authorized by the plant owner-operator.
‣Be familiar with local/national regulations.
‣Before starting work, read and understand the instructions in the Operating
Instructions and supplementary documentation as well as the certificates (depending
on the application).
‣Follow instructions and comply with basic conditions.
The operating personnel must fulfill the following requirements:
‣Be instructed and authorized according to the requirements of the task by the facility's
owner-operator.
‣Follow the instructions in this manual.
2.2 Designated use
Application and measured materials
Depending on the version ordered, the device can also be used with potentially explosive,
flammable, poisonous or oxidizing materials.
Devices that are used in hazardous areas have corresponding labels on their nameplates.
To ensure that the device remains in proper condition for the operation time:
‣Only use the device in full compliance with the data on the nameplate and the general
conditions listed in the Operating Instructions and supplementary documentation.
‣Check the nameplate to verify if the device can be put to its intended use in hazardous
areas.
‣If the device is not operated at an atmospheric temperature, compliance with the
relevant basic conditions specified in the relevant device documentation is absolutely
essential.
‣Protect the device permanently against corrosion from environmental influences.
‣Observe the limit values in the "Technical Information".
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Workplace safety
For work on and with the device:
‣Wear the required personal protective equipment according to local/national
regulations.

Basic safety instructions LT5
8 Endress+Hauser
2.4 Operational safety
Risk of injury!
‣Operate the device in proper technical conditions and fail-safe conditions only.
‣The plant owner-operator is responsible for interference-free operation of the device.
Modifications to the device
Unauthorized modifications to the device are not permitted and can lead to unforeseeable
dangers:
‣If modifications are nevertheless required, contact your Endress+Hauser Sales Center.
Repair
To ensure continued operational safety and reliability:
‣Carry out repairs on the device only if they are expressly permitted.
‣Observe local/national regulations pertaining to repair of an electrical device.
‣Use only original spare parts and accessories from Endress+Hauser.
Ex-area
Observe the following notes to eliminate the risk of danger to persons or the facility when
the device is used in Ex-areas (e.g. explosion protection, pressure equipment safety):
‣Check the model nameplate to ensure that the ordered device is explosion proof.
‣Observe the specifications in the separate supplementary documentation attached to
these Instructions.
2.5 Product safety
This device was designed in accordance with GEP (Good Engineering Practice) to meet
state-of-the-art safety requirements, has been tested and left the factory in a condition in
which it is safe to operate. It meets the general safety standards and legal requirements.

LT5 Product description
Endress+Hauser 9
3 Product description
3.1 Designated use
Float level gauge LT5 is an important measuring instrument in the process industry. The
structure does not require a power source and it is easy to install. Since it can be used for
high-precision liquid level measurement and remote indication detection, it is ideal for the
following operations:
• Management of inventory
• Batch processing
• Management of process tanks
• Safe tank operation
3.2 Technical data
Items Description
Measuring range 0 to 2.5, 5, 10, 16, 20, 30 m, 0 to 60 ft, 100 ft
Accuracy φ400 mm (15.75 in)
Float
±2 mm (0.08 in)
(Density limit 1 g/cm3 , measuring range 10 m (32.8 ft))
φ140 mm (140 in)
Float
±30 mm (1.18 in)
(Density limit 1 g/cm3, measuring range 10 m (32.8 ft))
Maximum operating pressure LT5-1 0 to 0.1961 bar/0.01961 MPa/2.84 psi
LT5-4 0 to 0.9807 bar/0.09807 MPa/14.22 psi
LT5-6 0 to 24.5 bar/2.45 MPa/355.25 psi
Operating temperature limits LT5-1 In contact with medium: –200 to 200 °C (–328 to 392 °F)
Body: –20 to 70 °C (–4 to 158 °F)
LT5-4/LT5-6 In contact with medium: –45 to 80 (–49 to 176)
Body: –20 to 70 °C (–4 to 157 °F)
Display LT5 Dial 2
Needle type or counter type (minimum readable scale: 1 mm)
Only the counter display is available for 30 m and 100 ft
Process connection LT5-1
(Threaded type, low-pressure
type)
Rp 1-1/2, w/o union nut, thread JIS B0203
Rc 1-1/2, union nut, SUS316, thread JIS B0203
NPT 1-1/2, union nut, SUS316, thread ANSI
LT5-1
(Flange type, low-pressure
type)
Flange spec./material
10K 40A RF, aluminum (AC4A), flange JIS B2220
10K 40A RF, SUS316, flange JIS B2220
NPS 1-1/2" Cl.150 RF, aluminum (AC4A) flange ASME B16.5
NPS 1-1/2" Cl.150 RF, SUS316 flange ASME B16.5
40A 150lbs RF, aluminum (AC4A), flange JPI 7S-15
40A 150lbs RF, SUS316, flange JPI 7S-15
10K 150A RF, SUS316, flange JIS B2220
NPS 6" Cl.150 RF, SUS316 flange ASME B16.5
150A 150lbs RF, SUS316, flange JPI 7S-15
LT5-4
(Flange type, medium-
pressure type)
Flange spec. / main body
material
10K 40A RF, aluminum (AC4CT6), flange JIS B2220
NPS 1-1/2" Cl.150 RF, aluminum (AC4CT6) flange ASME B16.5
40A 150lbs RF, aluminum (AC4CT6), flange JPI 7S-15
LT5-6
(Flange type, high-pressure
type)
Flange spec. / main body
material /
bolt material
10K 40A RF, iron, flange JIS B2220
NPS 1-1/2" Cl.150 RF, iron flange ASME B16.5
40A 150lbs RF, iron, flange JPI 7S-15
20K 40A RF, iron, flange JIS B2220
NPS 1-1/2" Cl.300 RF, iron flange ASME B16.5
40A 300lbs RF, iron, flange JPI 7S-15

Product description LT5
10 Endress+Hauser
Items Description
LT main body φ400 Low-pressure
type
Weight: 4.2 kg ρ: Density limit (g/cm3): 0.5 ≤ ρ < 0.65
Low-pressure
type
Weight: 5.0 kg ρ: Density limit (g/cm3): 0.65 ≤ ρ < 1.05
Low-pressure
type
Weight: 8.0 kg ρ: Density limit (g/cm3): 1.05 ≤ ρ < 2.0
High-pressure
type
Weight: 8.3 kg ρ: Density limit (g/cm3): 0.5 ≤ ρ < 0.7
LT main body φ140 Low-pressure
type
Weight: 2.1 kg ρ: Density limit (g/cm3): 0.5 ≤ ρ < 0.94
Low-pressure
type
Weight: 2.4 kg ρ: Density limit (g/cm3): 0.94 ≤ ρ < 2.0
Indicator coupling
(coupling between gauge head and
indicator)
LT5-1
(Threaded type, low-pressure
type)
Coupling: Penetration shaft
LT5-4
(Flange type, medium-
pressure type)
Coupling: Pressure bulkhead magnet coupling
LT5-6
(Flange type, high-pressure
type)
Coupling: Pressure bulkhead magnet coupling
Total weight LT5-1 (Threaded/flange type,
low-pressure type)
Approximately 8 kg
LT5-4 (Flange type, medium-
pressure type)
Approximately 22 kg
LT5-6 (Flange type, high-pressure
type)
Approximately 100 kg
Color Gauge head E+H Blue
Other components Silver
Choose either SUS316 or PVC as the material for low-pressure type.