Endress+Hauser LPGmass User manual

The refueling application flowmeter with seamless system integration
Application
• Measuring principle operates independently of physical fluid
properties such as viscosity or density
• Accurate measurement of liquefied petroleum gas in
refueling and distribution applications
Device properties
• Flow rates up to 180 000 kg/h (6 600 lb/min)
• Volume flow calculation as per API Table 53
• Robust, compact transmitter housing
• Modbus RS485
• Designed to meet application needs
Your benefits
• Excellent operational safety – reliable under extreme
ambient conditions
• Fewer process measuring points – multivariable
measurement (flow, density, temperature)
• Space‐saving installation – no in/outlet run needs
• Space‐saving transmitter – full functionality on smallest
footprint
• Fast commissioning – pre-configured devices
• Automatic recovery of data for servicing
Products Solutions Services
Technical Information
LPGmass
Coriolis flowmeter
TI01169D/06/EN/01.16
71311939

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Table of contents
Document information ....................... 3
Symbols used ................................ 3
Function and system design ................... 4
Measuring principle ............................ 4
Measuring system ............................. 4
Equipment architecture ......................... 5
Safety ..................................... 5
Input ..................................... 5
Measured variable ............................. 5
Measuring range .............................. 6
Operable flow range ........................... 6
Output ................................... 6
Output signal ................................ 6
Signal on alarm ............................... 6
Ex connection data ............................ 7
Low flow cut off .............................. 7
Galvanic isolation ............................. 7
Protocol-specific data ........................... 7
Power supply .............................. 8
Terminal assignment ........................... 8
Supply voltage .............................. 10
Power consumption ........................... 10
Current consumption .......................... 10
Power supply failure .......................... 11
Electrical connection .......................... 11
Potential equalization ......................... 12
Terminals ................................. 12
Cable entries ............................... 12
Cable specification ............................ 12
Performance characteristics .................. 13
reference operating conditions .................... 13
Maximum measured error ....................... 13
Repeatability ............................... 14
Response time .............................. 14
Influence of medium temperature .................. 14
Influence of medium pressure .................... 14
Design fundamentals .......................... 15
Installation ............................... 15
Mounting location ............................ 16
Orientation ................................ 16
Inlet and outlet runs .......................... 17
Special mounting instructions .................... 17
Mounting Safety Barrier Promass 100 ............... 17
Environment .............................. 17
Ambient temperature range ..................... 17
Storage temperature .......................... 19
Climate class ............................... 19
Degree of protection .......................... 19
Vibration resistance ........................... 19
Shock resistance ............................. 19
Shock resistance ............................. 19
Electromagnetic compatibility (EMC) ............... 19
Process .................................. 19
Medium temperature range ...................... 19
Density ................................... 19
Pressure-temperature ratings .................... 19
Flow limit ................................. 20
Pressure loss ............................... 21
Vibrations ................................. 21
Mechanical construction .................... 22
Dimensions in SI units ......................... 22
Dimensions in US units ......................... 25
Weight ................................... 28
Materials .................................. 28
Process connections ........................... 29
Surface roughness ........................... 29
Operability ............................... 29
Operating concept ............................ 29
Service interface ............................. 30
Certificates and approvals ................... 30
CE mark ................................... 30
C-Tick symbol ............................... 30
Ex approval ................................ 30
Modbus RS485 certification ..................... 31
Measuring instrument approval ................... 31
Ordering information ....................... 31
Accessories ............................... 31
Service-specific accessories ...................... 31
Supplementary documentation ............... 32
Standard documentation ........................ 32
Supplementary device-dependent documentation ....... 32
Registered trademarks ...................... 33

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Document information
Symbols used Electrical symbols
Symbol Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.
Protective ground connection
A terminal which must be connected to ground prior to establishing any other
connections.
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a
potential equalization line or a star grounding system depending on national or
company codes of practice.
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
Visual inspection
Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
1.
,
2.
,
3.
… Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
.
Safe area (non-hazardous area)
Flow direction

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Function and system design
Measuring principle The measuring principle is based on the controlled generation of Coriolis forces. These forces are
always present in a system when both translational and rotational movements are superimposed.
Fc = 2 · ∆m (ν · ω)
Fc = Coriolis force
∆m = moving mass
ω = rotational velocity
ν = radial velocity in rotating or oscillating system
The amplitude of the Coriolis force depends on the moving mass ∆m, its velocity ν in the system and
thus on the mass flow. Instead of a constant rotational velocity ω, the sensor uses oscillation.
Density measurement
The measuring tube is continuously excited at its resonance frequency. A change in the mass and
thus the density of the oscillating system (comprising measuring tube and fluid) results in a
corresponding, automatic adjustment in the oscillation frequency. Resonance frequency is thus a
function of medium density. The microprocessor utilizes this relationship to obtain a density signal.
Temperature measurement
The temperature of the measuring tube is determined in order to calculate the compensation factor
due to temperature effects. This signal corresponds to the process temperature and is also available
as an output signal.
Measuring system The device consists of a transmitter and a sensor. If a device with Modbus RS485 intrinsically safe is
ordered, the Safety Barrier Promass 100 is part of the scope of supply and must be implemented to
operate the device.
The device is available as a compact version:
The transmitter and sensor form a mechanical unit.
Transmitter
Device versions and materials:
Compact, aluminum coated:
Aluminum, AlSi10Mg, coated
Configuration:
Via operating tools (e.g. FieldCare, DeviceCare)
A0016693
Sensor
LPGmass • Simultaneous measurement of flow, density and temperature (multi-
variable)
• Nominal diameter range: DN 8 to 50 (³⁄₈ to 2")
• Materials:
– Sensor: stainless steel, 1.4301 (304)
– Measuring tubes: stainless steel, 1.4539 (904L)
– Process connections: stainless steel, 1.4404 (316/316L)
• Limiting medium pressure range: max. 100 bar (1 450 psi)
A0029466

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Safety Barrier Promass 100
A0016763
• Dual-channel safety barrier for installation in non-hazardous locations
or zone 2/div. 2:
– Channel 1: DC 24 V power supply
– Channel 2: Modbus RS485
• In addition to current, voltage and power limitation, it offers galvanic
isolation of circuits for explosion protection.
• Easy top-hat rail mounting (DIN 35 mm) for installation in control
cabinets
Equipment architecture
5
6
7
21
3 4
A0021848
 1 Possibilities for integrating measuring devices into a system
1 Control system (e.g. PLC)
2 Modbus RS485
3 Safety Barrier Promass 100
4 Modbus RS485 intrinsically safe
5 Non-hazardous area
6 Non-hazardous area and Zone 2/Div. 2
7 Hazardous area and Zone 1/Div. 1
Safety IT security
We only provide a warranty if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any inadvertent
changes to the device settings.
IT security measures in line with operators' security standards and designed to provide additional
protection for the device and device data transfer must be implemented by the operators themselves.
Input
Measured variable Direct measured variables
• Mass flow
• Density
• Temperature
Calculated measured variables
• Volume flow
• Corrected volume flow
• Corrected volume

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Measuring range Measuring ranges (not custody transfer mode)
DN Measuring range full scale values min(F) to max(F)
[mm] [in] [kg/h] [lb/min]
8 ³⁄₈ 0 to 2 000 0 to 73.5
15 ½ 0 to 6 500 0 to 238
25 1 0 to 18 000 0 to 660
40 1½ 0 to 45 000 0 to 1 650
50 2 0 to 70 000 0 to 2 570
The values of the corresponding custody transfer certificate apply in custody transfer mode.
Recommended measuring range
"Flow limit" section →  20
Operable flow range Over 1000 : 1.
Flow rates above the preset full scale value do not override the electronics unit, with the result that
the totalizer values are registered correctly.
Output
Output signal Modbus RS485
Physical interface In accordance with EIA/TIA-485-A standard
Terminating resistor For device version used in intrinsically safe areas: integrated and can be activated
via DIP switches on the Safety Barrier Promass 100
Signal on alarm Depending on the interface, failure information is displayed as follows:
Modbus RS485
Failure mode Choose from:
• NaN value instead of current value
• Last valid value
Interface/protocol
• Via digital communication:
Modbus RS485
• Via service interface
Plain text display With information on cause and remedial measures
Light emitting diodes (LED)
Status information Status indicated by various light emitting diodes
The following information is displayed depending on the device version:
• Supply voltage active
• Data transmission active
• Device alarm/error has occurred

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Ex connection data These values only apply for the following device version:
Order code for "Output", option M "Modbus RS485", for use in intrinsically safe areas
Safety Barrier Promass 100
Safety-related values
Terminal numbers
Supply voltage Signal transmission
2 (L-) 1 (L+) 26 (A) 27 (B)
Unom = DC 24 V
Umax = AC 260 V
Unom = DC 5 V
Umax = AC 260 V
Intrinsically safe values
Terminal numbers
Supply voltage Signal transmission
20 (L-) 10 (L+) 62 (A) 72 (B)
Uo = 16.24 V
Io = 623 mA
Po = 2.45 W
With IIC 1): Lo = 92.8 µH, Co = 0.433 μF, Lo/Ro = 14.6 μH/Ω
For an overview and for information on the interdependencies between the gas group - sensor - nominal
diameter, see the "Safety Instructions" (XA) document for the measuring device
1) The gas group depends on the sensor and nominal diameter.
Transmitter
Intrinsically safe values
Order code for
"Approval"
Terminal numbers
Supply voltage Signal transmission
20 (L-) 10 (L+) 62 (A) 72 (B)
• Option BM: ATEX II2G + IECEx Z1 Ex ia, II2D Ex tb
• Option BU: ATEX II2G + IECEx Z1 Ex ia
• Option C2: CSA C/US IS Cl. I, II, III Div. 1
• Option MM: INMETRO Ex ia Zone 1
• Option NG: NEPSI Ex ia Zone 1
• Option 85: ATEX II2G + IECEx Z1 Ex ia + CSA C/US
IS Cl. I, II, III Div. 1
Ui = 16.24 V
Ii = 623 mA
Pi = 2.45 W
Li = 0 µH
Ci = 6 nF
For an overview and for information on the interdependencies between the gas group - sensor - nominal
diameter, see the "Safety Instructions" (XA) document for the measuring device
Low flow cut off The switch points for low flow cut off are user-selectable.
Galvanic isolation The following connections are galvanically isolated from each other:
• Outputs
• Power supply
Protocol-specific data Modbus RS485
Protocol Modbus Applications Protocol Specification V1.1
Device type Slave
Slave address range 1 to 247
Broadcast address range 0

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Function codes • 03: Read holding register
• 04: Read input register
• 06: Write single registers
• 08: Diagnostics
• 16: Write multiple registers
• 23: Read/write multiple registers
Broadcast messages Supported by the following function codes:
• 06: Write single registers
• 16: Write multiple registers
• 23: Read/write multiple registers
Supported baud rate • 1 200 BAUD
• 2 400 BAUD
• 4 800 BAUD
• 9 600 BAUD
• 19 200 BAUD
• 38 400 BAUD
• 57 600 BAUD
• 115 200 BAUD
Data transfer mode • ASCII
• RTU
Data access Each device parameter can be accessed via Modbus RS485.
For Modbus register information, see "Description of device parameters"
documentation →  32
Power supply
Terminal assignment Overview: housing version and connection versions
A
1
1.1 1.2
A0030218
A Housing version: compact, aluminum coated
1 Connection version: Modbus RS485
1.1 Signal transmission
1.2 Supply voltage
Transmitter

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Modbus RS485 connection version
For use in the intrinsically safe area. Connection via Safety Barrier Promass 100.
Order code for "Output", option M
Order code for
"Housing"
Connection methods available Possible options for order code
"Electrical connection"
Output Power
supply
Options
A
terminals terminals • Option B: thread M20x1
• Option C: thread G ½"
• Option D: thread NPT ½"
Order code for "Housing":
Option A: compact, coated aluminum
L
L
62
72 A
B
10
20
+
_1
2
A0030219
 2 Modbus RS485 terminal assignment, connection version for use in intrinsically safe areas (connection via
Safety Barrier Promass 100)
1 Intrinsically safe power supply
2 Modbus RS485
Order code for
"Output" 20 (L-) 10 (L+) 72 (B) 62 (A)
Option MIntrinsically safe supply voltage Modbus RS485 intrinsically safe
Order code for "Output":
Option M: Modbus RS485, for use in intrinsically safe areas (connection via Safety Barrier Promass 100)

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Safety Barrier Promass 100
A
Safe area
1
L+
2
L
27
26
B A
Power
supply
24VDC
Modbus
RS485
1020 72 62
L+L B A
Power
supply
Modbus
RS485
Hazardous area
Safety Barrier
Promass 100
Power
Communication
Lift panel for
bus termination
1
2
A
A0030220
 3 Safety Barrier Promass 100 with terminals
1 Non-hazardous area and Zone 2/Div. 2
2 Intrinsically safe area
Supply voltage The power unit must be tested to ensure it meets safety requirements (e.g. PELV, SELV).
Transmitter
For device version with communication type:
Modbus RS485, device version:
For use in the intrinsically safe area: power supply via Safety Barrier Promass 100
Safety Barrier Promass 100
DC 20 to 30 V
Power consumption Transmitter
Order code for "Output" Maximum
Power consumption
Option M: Modbus RS485, for use in intrinsically safe areas 2.45 W
Safety Barrier Promass 100
Order code for "Output" Maximum
Power consumption
Option M: Modbus RS485, for use in intrinsically safe areas 4.8 W
Current consumption Transmitter
Order code for "Output" Maximum
Current consumption
Maximum
switch-on current
Option M: Modbus RS485, for use in intrinsically safe
areas 145 mA 16 A (< 0.4 ms)