Rosemount Quick Start Guide: Rosemount 3810 Series Ultrasonic Flow Meters HART Field Device Specification Manuals & Guides
HART® Field Device Specification
00825-0300-3810, Rev AA
Rosemount™ 3810 Series Liquid Ultrasonic
Meter
April 2022
3814 Liquid Ultrasonic Flow Meter
3818 LNG Liquid Ultrasonic Flow Meter
3812 Liquid Ultrasonic Flow Meter
Safety and approval information
This Rosemount product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EU declaration of conformity for directives that apply to this product. The EU declaration
of conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available
on the internet at www.emerson.com or through your local Emerson support center.
Information affixed to equipment that complies with the Pressure Equipment Directive, can be found on the internet at http://
www.emerson.com.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the user manual.
Product data sheets and manuals are available from the Emerson website at http://www.emerson.com.
Return policy
Follow Emerson procedures when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Emerson employees. Emerson will not accept your
returned equipment if you fail to follow Emerson procedures. Return procedures and forms are available on our web support site
at www.emerson.com, or by phoning the Emerson Customer Service department.
Emerson Flow customer service
Email:
• Worldwide: http://flow.support@emerson.com
• Asia-Pacific: http://APflow.support@emerson.com
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800 522 6277 U.K. 0870 240 1978 Australia 800 158 727
Canada +1 303 527 5200 The Netherlands +31 (0) 704 136 666 New Zealand 099 128 804
Mexico +41 (0) 41 7686 111 France 0800 917 901 India 800 440 1468
Argentina +54 11 4837 7000 Germany 0800 182 5347 Pakistan 888 550 2682
Brazil +55 15 3413 8000 Italy 8008 77334 China +86 21 2892 9000
Central & Eastern +41 (0) 41 7686 111 Japan +81 3 5769 6803
Russia/CIS +7 495 981 9811 South Korea +82 2 3438 4600
Egypt 0800 000 0015 Singapore +65 6 777 8211
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684
HART Field Device Specification 3810 Series Ultrasonic Meter
00825-0300-3810
Contents
1. Introduction
1.1 Scope ............................................................................................................ 1
1.2 Purpose ......................................................................................................... 1
1.3 Who should use this document? ...................................................................... 1
1.4 Definitions, abbreviations, acronyms and references ......................................... 1
1.4.1 Definitions........................................................................................................... 2
1.4.2 Acronyms............................................................................................................. 2
1.4.3 Abbreviations....................................................................................................... 2
1.4.4 References ........................................................................................................... 3
2. Device identification
Contents
April 2022
2.1 Rosemount 3810 Series Liquid Ultrasonic Flow Meter identification ................... 5
2.2 Physical description ........................................................................................6
3. Product overview
3.1 Device function, purpose and features ............................................................. 7
3.2 Process connections ....................................................................................... 7
3.3 External interfaces (electrical and non-electrical) .............................................. 7
3.4 Other required equipment............................................................................... 7
4. Product interfaces
4.1 Process interfaces ........................................................................................... 9
4.1.1 Sensor input channels .......................................................................................... 9
4.1.2 Sensor analog output channels........................................................................... 10
4.1.3 Time Stamp........................................................................................................ 13
5. Device variables
5.1 Device variable 0 - uncorrected flow rate ........................................................ 15
5.2 Device variable 6 - pressure ........................................................................... 15
5.3 Device variable 7 - temperature ..................................................................... 16
5.4 HART slave device variables good status indicators .......................................... 16
6. Dynamic variables
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6.1 Fixed dynamic variables ................................................................................. 17
6.2 Dynamic variables with configurable mapping.................................................17
7. Status information
7.1 Device status ................................................................................................20
7.2 Additional device status (Command 48).......................................................... 22
8. Universal commands
8.1 HART universal commands.............................................................................27
9. Common-practice commands
9.1 Supported commands ...................................................................................29
9.2 Burst Mode ...................................................................................................30
9.3 Catch Device Variable .................................................................................... 30
10. Device-specific commands
10.1 Public, device-specific commands ................................................................31
10.1.1 Command 128 Write analog output configuration .............................................32
10.1.2 Command 129 Read analog output configuration ..............................................34
10.1.3 Command 130 Write Frequency/Digital Output configuration ...........................35
10.1.4 Command 131 Read frequency and digital output configuration........................37
10.1.5 Command 132 Write flow pressure configuration ..............................................38
10.1.6 Command 133 Read flow pressure configuration ...............................................40
10.1.7 Command 134 Write flow temperature configuration ........................................41
10.1.8 Command 135 Read flow temperature configuration.........................................43
10.1.9 Command 136 Write device units.......................................................................44
10.1.10 Command 137 Read device units......................................................................45
10.1.11 Command 138 Write device variable range.......................................................46
10.1.12 Command 139 Read device variable range........................................................48
10.1.13 Command 140 Read detailed status..................................................................49
10.1.14 Command 141 Acknowledge alarm ..................................................................52
10.1.15 Command 142 Write digital input configuration...............................................54
10.1.16 Command 143 Read digital input configuration................................................55
10.1.17 Command 144 Read velocity zero calibration status.........................................56
10.1.18 Command 145 Write velocity zero calibration control ......................................58
10.1.19 Command 146 Read Miscellaneous Non-Write Protected Parameters ..............63
10.1.20 Command 147 Read miscellaneous write protected parameters ......................64
10.1.21 Command 153 Read running averages..............................................................65
10.1.22 Command 154 Read Baselines ..........................................................................67
10.1.23 Command 155 Write Baselines .........................................................................69
10.1.24 Command 159 Read meter chord data .............................................................71
10.1.25 Command 160 Read meter flow data................................................................72
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10.1.26 Command 161 Read path signal amplitude data .............................................. 73
10.1.27 Command 162 Read noise amplitudes ............................................................. 74
10.1.28 Command 163 Read path SNR data.................................................................. 75
10.1.29 Command 164 Read path percent good ........................................................... 76
10.1.30 Command 165 Read path gains........................................................................ 77
10.1.31 Command 166 Read flow analysis configuration............................................... 78
10.1.32 Command 167 Write flow analysis configuration.............................................. 79
10.1.33 Command 168 Read general meter information............................................... 81
10.1.34 Command 169 Read flow totals........................................................................ 82
10.1.35 Command 172 Write Ethernet configuration.................................................... 83
10.1.36 Command 173 Read Ethernet Configuration .................................................... 85
10.1.37 Command 174 Write serial port configuration.................................................. 86
10.1.38 Command 175 Read serial port configuration................................................... 88
10.1.39 Command 176 Write transducer chord configuration....................................... 89
10.1.40 Command 177 Read transducer chord configuration ....................................... 90
10.1.41 Command 178 Write polynomial calibration configuration .............................. 91
10.1.42 Command 179 Read polynomial calibration configuration ............................... 92
10.1.43 Command 180 Write meter factor.................................................................... 93
10.1.44 Command 181 Read meter factor..................................................................... 94
10.1.45 Command 182 Write archive log configuration ................................................ 95
10.1.46 Command 183 Read Archive Log configuration................................................ 96
10.1.47 Command 184 Write acquisition configuration ................................................ 97
10.1.48 Command 185 Read acquisition configuration ................................................. 99
10.1.49 Command 186 Write meter limits .................................................................. 100
10.1.50 Command 187 Read meter limits ................................................................... 102
10.1.51 Command 188 Write meter body configuration .............................................103
10.1.52 Command 189 Read meter body configuration.............................................. 105
10.1.53 Command 190 Write signal parameters ......................................................... 106
10.1.54 Command 191 Read signal parameters ..........................................................108
10.1.55 Command 192 Write target parameters......................................................... 109
10.1.56 Command 193 Read target parameters.......................................................... 111
10.1.57 Command 194 Reset chord proportions to defaults ....................................... 112
10.1.58 Command 195 Enter/exit fixed frequency output mode ................................. 113
10.1.59 Command 196 Enter/exit fixed digital output mode.......................................114
10.1.60 Command 197 Set transducer type ................................................................115
10.1.61 Command 198 Write Frequency/Digital Output sources ................................ 117
10.1.62 Command 199 Read Frequency/Digital Output sources .................................119
10.1.63 Command 200 Write miscellaneous write protected parameters ................... 120
10.1.64 Command 201 Write analog input calibration ................................................ 121
10.1.65 Command 202 Read analog input calibration ................................................. 122
10.1.66 Command 203 Write piecewise linearization flow rates.................................. 123
10.1.67 Command 204 Read piecewise linearization flow rates................................... 125
Contents
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10.1.68 Command 205 Write piecewise linearization meter factors ............................126
10.1.69 Command 206 Read piecewise linearization meter factors .............................127
10.1.70 Command 207 Write meter text .....................................................................128
10.1.71 Command 208 Read meter text......................................................................129
10.1.72 Command 217 Write baseline times and comments.......................................130
10.1.73 Command 218 Read baseline times and comments........................................132
10.1.74 Command 219 Reset tracking targets to defaults ...........................................133
10.1.75 Command 220 Write local display configuration.............................................134
10.1.76 Command 221 Read local display configuration..............................................136
10.1.77 Command 222 Enable local display test mode ................................................137
10.1.78 Command 223 Write general meter information ............................................138
10.1.79 Command 224 Write miscellaneous non-write protected
parameters....................................................................................................... 139
10.1.80 Comman
d 225 Write Piecewise Linearization High Viscosity Meter Factors
parameters....................................................................................................... 141
10.1.81 Command 226 Read Piecewise Linearization High Viscosity Meter Factors .....143
10.1.82 Command 227 Write Piecewise Linearization Profile Factors...........................144
10.1.83 Command 228 Read Piecewise Linearization Profile Factors............................146
10.1.84 Command 231 Enter/Exit Fixed Analog Output Mode .....................................147
10.2 Device-specific command error (response code 6) ....................................... 148
11. Tables
11.1 Volume units ............................................................................................ 149
11.2 Time units (flow rate) ................................................................................ 149
11.3 Volumetric flow rate units .......................................................................... 150
11.4 Pressure units ........................................................................................... 150
11.5 Temperature units ..................................................................................... 151
11.6 Velocity units ............................................................................................ 151
11.7 Decibel units............................................................................................. 151
11.8 Voltage units ............................................................................................ 151
11.9 Current units ............................................................................................ 152
11.10 Percent units ........................................................................................... 152
11.11 Length units ............................................................................................ 152
11.12 Thermal expansion units .......................................................................... 152
11.13 Viscosity units ......................................................................................... 153
11.14 Unit conversion factors ............................................................................153
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11.15 Pressure and temperature tables .............................................................. 154
11.15.1 Live pressure................................................................................................... 155
11.15.2 Live temperature ........................................................................................... 156
Contents
12. Performance
12.1 Sampling rates.......................................................................................... 157
12.2 Power-up .................................................................................................. 157
12.3 Device reset ............................................................................................. 158
12.4 Self test ................................................................................................... 158
12.5 Command response delay .......................................................................... 158
12.5.1 Long messages................................................................................................. 159
12.5.2 Non-volatile memory ....................................................................................... 159
12.5.3 Operating modes ............................................................................................. 159
12.5.4 Write protection............................................................................................... 159
12.5.5 Damping value ................................................................................................. 159
A Annex A. Device capability checklist
A.1 Device capability ...................................................................................................... 161
B Annex B. Default device configuration
B.1 Default factory settings ............................................................................................ 163
C Annex C. Device variable calculations
C.1 Uncorrected flow rate............................................................................................... 165
C.2 Pressure ................................................................................................................... 166
C.3 Temperature ............................................................................................................ 166
D Annex D. Supported field device operations
D.1 AMS Device Manager ............................................................................................... 167
D.2 375/475 field communicator menu tree .................................................................. 168
E Annex E. Revision history
E.1 Document release..................................................................................................... 169
E.2 Changes Revision 2 ................................................................................................... 170
E.3 Changes Revision 3 ................................................................................................... 172
E.4 Changes Revision 4 ................................................................................................... 174
E.5 Changes Revision 5 ................................................................................................... 175
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vi
Contents
List of FiguresHART Field Device Specification 3810 Series Ultrasonic Meter
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List of Figures
Figure 2-1 3810 Series Liquid Ultrasonic Flow Meter Electronics - CPU Module .................................. 6
Figure D-1 AMS Device Manage menu tree..................................................................................... 167
List of Figures VII
List of Figures HART Field Device Specification 3810 Series Ultrasonic Meter
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VIII List of Figures
List of TablesHART Field Device Specification 3810 Series Ultrasonic Meter
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List of Tables
Table 1-1 Definitions.......................................................................................................................... 2
Table 1-2 Acronyms........................................................................................................................... 2
Table 1-3 Abbreviations..................................................................................................................... 2
Table 1-4 Reference documentation.................................................................................................. 3
Table 2-1 3810 Series Liquid Ultrasonic Flow Meter device identification........................................... 5
Table 4-1 Analog output configuration parameters ......................................................................... 11
Table 4-2 Device variables time stamp............................................................................................. 13
Table 4-3 Time stamp calculations for additional device variables.................................................... 13
Table 5-1 Device variable 0 - uncorrected flow rate.......................................................................... 15
Table 5-2 Device variable 6 - pressure ............................................................................................. 15
Table 5-3 Device variable 7 - temperature ....................................................................................... 16
Table 5-4 Device variable good indicators........................................................................................ 16
Table 6-1 Dynamic variables configurable mapping......................................................................... 17
Table 7-1 Device status byte database point mapping ..................................................................... 20
Table 7-2 Additional device status (Command 48)........................................................................... 22
Table 8-1 HART universal commands for slave implementation....................................................... 27
Table 9-1 Common-practice commands.......................................................................................... 29
Table 11-1 Volume units.................................................................................................................. 149
Table 11-2 Time units ...................................................................................................................... 149
Table 11-3 Volumetric flow rate engineering unit codes.................................................................. 150
Table 11-4 Pressure units................................................................................................................. 150
Table 11-5 Temperature units.......................................................................................................... 151
Table 11-6 Velocity units ................................................................................................................. 151
Table 11-7 Decibel units .................................................................................................................. 151
Table 11-8 Voltage units.................................................................................................................. 151
Table 11-9 Current units .................................................................................................................. 152
Table 11-10 Percent units .................................................................................................................. 152
Table 11-11 Length units ................................................................................................................... 152
Table 11-12 Thermal Expansion units................................................................................................. 152
Table 11-13 Viscosity units ................................................................................................................ 153
Table 11-14 Unit conversion factors................................................................................................... 153
Table 11-15 Pressure and temperature tables.................................................................................... 154
Table 11-16 Data points for pressure inputs....................................................................................... 155
List of Tables IX
List of Tables HART Field Device Specification 3810 Series Ultrasonic Meter
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Table 11-17 Data points for temperature inputs ................................................................................156
Table 12-1 Sampling rates................................................................................................................157
Table 12-2 Command 42 device reset ..............................................................................................158
Table 12-3 Command response delay ..............................................................................................158
Table A-1 Capability checklist .........................................................................................................161
Table B-1 Device factory settings configuration .............................................................................163
X List of Tables
HART Field Device Specification 3810 Series Ultrasonic Meter
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10
1. Introduction
1. Introduction
April 2022
1.1
1.2
1.3
1.4
Scope
The scope of this document is to define the HART revision 7 functional requirements, device
specific commands and all Universal and the supported Common Practice commands
supported by the HART interface for Rosemount 3810 Series Liquid Ultrasonic Flow Meters,
Purpose
The purpose of this document is to list the functional requirements for developing the 3810
Series Liquid Ultrasonic Flow Meters HART rev 7 firmware. This document complies with HART
Protocol Revision 7 and Field Device Specification HCF_LIT-18, Revision 11.0 in preparation and
development of engineering regression tests of functionality not covered by the HCF-Kit-192.
Who should use this document?
This specification is designed to be a technical reference for HART capable Host Application
Developers, System Integrators, and knowledgeable End Users. It also provides functional
specifications (e.g., commands, enumerations and performance requirements) used during
Field Device Development, maintenance and testing. This document assumes the reader is
familiar with HART Protocol requirements and terminology.
Definitions, abbreviations, acronyms and
references
The following is a list of commonly used definitions used throughout this document.
Scope 1
1. Introduction HART Field Device Specification 3810 Series Ultrasonic Meter
April 2022 00825-0300-3810
1.4.1 Definitions
Table 1-1 Definitions
Name Definition
Emerson Field Communicator 375 or 475 field communicator - handheld device
1.4.2 Acronyms
Table 1-2 Acronyms
Acronym Definition
ADC Analog to Digital Converter
API Application Program Interface
ATE X Atmospheres E xplosives (Fren ch)
CPU Central Processing Unit
D/A Digital-to-Analog
DAC Digital to Analog Converter
DD Device Description (HART)
EDDL Electronic Device Description Language (HART)
FPGA Field-Programmable Gate Array
HART Highway Addressable Remote Transducer
I/O Input(s)/Output(s)
LED Light-Emitting Diode
1.4.3 Abbreviations
Table 1-3 Abbreviations
Abbreviation
o
C
A/D Analog-to-Digital
D/A Digital-to-Analog
Enum Enumerated
Hz Hertz
mA Milliamperes (also referred to as milliamps)
RX Receive
TX Transmit
Definition
Degrees Celsius (alternatively, degrees Centigrade)
2 Definitions
HART Field Device Specification 3810 Series Ultrasonic Meter
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1.4.4 References
The documents referenced within the text of this document are listed in the table below:
Table 1-4 Reference documentation
Title Document number, revision, date
1. Introduction
April 2022
American Petroleum Institute (API) Manual of Petroleum Measurement Standards (MPMS) Chapter 21 - Flow Measurement Using
Electronic Metering Systems
Section 1 - Electronic Gas Measurement
HART SMART Communications Protocol Specification (also includes
the specifications listed below)
FSK Physical Layer Specification HCF_SPEC - 54, Rev. 8.1 (24 August, 1999)
Data Link Layer Specification HCF_SPEC - 81, Rev. 9.0 (12 May 2012)
Command Summary Specification HCF_SPEC - 99, Rev. 9.0 (23 July, 2007)
Universal Command Specification HCF_SPEC - 127, Rev. 7.1 (10 May, 2008)
Common Practice Command Specification HCF_SPEC-151, Rev. 10.0 (22 June 2012)
Common Tables HCF_SPEC - 183, Rev. 23.0 (29 May, 2013)
Command Specific Response Code Definitions HCF_SPEC - 307, Rev. 6.0 (5 September, 2007)
First Edition, 01-Sep-1993
HCF_SPEC 13, Rev. 7.5 (29 May, 2013)
References 3
1. Introduction HART Field Device Specification 3810 Series Ultrasonic Meter
April 2022 00825-0300-3810
4 References
2. Device identificationHART Field Device Specification 3810 Series Ultrasonic Meter
00825-0300-3810 April 2022
21
2. Device identification
This section details the Rosemount 3810 Series Liquid Ultrasonic Flow Meter identification
and physical description.
2.1
Rosemount 3810 Series Liquid Ultrasonic Flow
Meter identification
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter Field Device Identification
summary is shown in Table 2-1 below.
Table 2-1 3810 Series Liquid Ultrasonic Flow Meter device identification
Rosemount 3810
Series Liquid
Manufacturer Name:
Manufacture ID Code: 13 (D Hex) Device Type Code: 41 (29 Hex)
HART Protocol Revision: 7 Device Revision: 6
Number of Device Variables: 3
Physical Layers Supported: Bell 202 FSK Note:
Physical Device Category:
Emerson
Rosemount Series 3810
Liquid Ultrasonic F
low Meter
Model Name(s):
HART Hardware Revision 4
HART Software Revision: 26
Ultrasonic Flow
Meter
Rosemount 3810 Series Liquid Ultrasonic Flow Meter identification
5
HART Field Device Specification 3810 Series Ultrasonic Meter2. Device identification
April 2022 00825-0300-3810
2.2 Physical description
The Series 3810 Liquid Ultrasonic Meter electronics enables the meter to easily communicate
with other field devices, and ultimately, communicate key diagnostic information through
PlantWeb architecture. Any programmable device, such as the FPGA, is programmed via the
CPU Module. The CPU Module part number is P/N 1-360-03-001).
Figure 2-1 3810 Series Liquid Ultrasonic Flow Meter Electronics - CPU Module
6 Physical description
3. Product overviewHART Field Device Specification 3810 Series Ultrasonic Meter
00825-0300-3810 April 2022
3. Product overview
This section specifies the purpose and application of the Rosemount 3810 Series Liquid
Ultrasonic Flow Meter for HART communications.
3.1
3.2
3.3
Device function, purpose and features
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter enables communication with other
field devices, and ultimately, communicates key diagnostic information through the
PlantWeb® architecture.
All analog inputs and outputs are isolated from each other and isolated from the system with a
minimum isolation of 500 V.
Process connections
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter’s electronics (the firmware, CPU
module and the Acquisition module) allows communications with other field devices.
External interfaces (electrical and non-electrical)
Any pressure and/or temperature input read via the Rosemount 3810 Series Liquid Ultrasonic
Flow Meter is configured using a hand-held communicator (e.g., Emerson's 375 Field
Communicator) and not via the meter such as for device address, device tag, limits, and units.
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter is compliant with Asset Management
Solutions, AMSTM Device Manager, software applications that provides operator interface
between a HART enabled field device and a remote PC.
3.4
Device function, purpose and features 7
Other required equipment
An RS-232C/RS-485 (half duplex) serial communication port for Modbus communication is
provided on Port A, Port B and Port C.
Any programmable device on the Rosemount 3810 Series Liquid Ultrasonic Flow Meter (such
as a FPGA) is programmed via the CPU Module.
HART Field Device Specification 3810 Series Ultrasonic Meter3. Product overview
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8 Other required equipment
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4
4. Product interfaces
This section discusses the Rosemount 3810 Series Liquid Ultrasonic Flow Meter for
HART communications, electrical interface, and input and output requirements.
4. Product interfacesHART Field Device Specification 3810 Series Ultrasonic Meter
April 2022
4.1
4.1.1
Process interfaces
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter is capable of communicating with a
flow computer or other interface devices (e.g. (AMSTM Device Manager or an Emerson Field
Communicator, etc.) via HART and enables PlantWeb connectivity.
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter provides an RS-232C/RS-485 halfduplex serial communications port (Port A) connected via the CPU Module. Two independent
analog input circuits and 16-bit, 4-20mA analog output circuits are supported.
LED status indicators show 24V power, 24V current limit, TX and RX serial communication ports,
and HART slave communication via Analog Output 1.
Sensor input channels
Rosemount 3810 Series Liquid Ultrasonic Flow Meters supports analog and discrete inputs as
shown below.
Name
Analog Input 1 4 mA- 20 mA Input for temperature device
Analog Input 2 4 mA- 20 mA Input for pressure device
Functional description
Note: AI-1 and AI-2 are electronically isolated and operate in sink
mode. The input contains a series resistance so HART Communicators can be connected to configure sensors.
A 24 Volt DC power supply is available to provide power to the
sensors.
Digital Input
(Selectable)
Ethernet Port One Ethernet Port (TCP/IP)
Frequency/Digital Output(s) Maximum frequency for the frequency outputs
Serial Port One serial RS-232/RS-485 port
Process interfaces 9
(1) Single polarity (for flow calibration gating - contact closure)
• Single input for starting and stopping
• Four pulse configurations available
• Up to 100 Mbps
•Modbus TCP
• 1000Hz
• 5000Hz
Mode options:
• Open Collector (requires external excitation supply voltage
and pull-up resistor)
TTL (internally powered by the meter 0-5 VDC signal)
(115 kbps baud rate) (Modbus RTU/ASCII)
HART Field Device Specification 3810 Series Ultrasonic Meter4. Product interfaces
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Name
Tra n sd uc er s • LT- 01
Functional description
•LT-03
•LT-04
•LT-05
•LT-06
•LT-07
•LT-08
•LT-09
•LT-10
•LT-11
•LT-14
•LT-15
•LT-16
•LT-17
Note: The process temperature must not exceed the operating tem-
perature range of the transducers.
4.1.2 Sensor analog output channels
The firmware supports two independently-configurable analog output channels (AO1 and AO2).
For conventional operation, the analog output channels provide identical but separate
configuration parameters including, but not limited to, the currently available AO1
configuration parameters (for content and scaling configuration). These configuration
parameters follow the same naming convention as the AO1related configuration parameters
(which retain their current names). The Boolean data point, IsAO1Avail indicates the presence
of Analog Output 1 (AO1). NOTE: HART communication is available over AO1 only.
10 Sensor analog output channels
4. Product interfacesHART Field Device Specification 3810 Series Ultrasonic Meter
Configuration via the HART slave port, requires device-specific commands.
00825-0300-3810
Table 4-1 Analog output configuration parameters
Val ues
Direction
Linear over-range Down greater than -3.125% 3.5 mA
Up less than +106.25% 21 mA
Maximum current +106.25% 21 mA
Multi-drop current draw
Lift-off voltage 7 V @ full scale
(percent of range)
4 mA (Available in sink mode only)
Choose the HART selectable output Primary or Secondary Variable (via any serial, Ethernet, or
HART slave port):
• uncorrected volumetric flow rate
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter output Third and Fourth Variables
(via any serial, Ethernet, or HART slave port) from among the choices available for the Primary
Variable and additionally the following choices (if applicable):
Values
(e.g., in mA)
April 2022
• live pressure value
• live temperature value
• for each frequency output: maximum frequency, content, relationship to flow
direction, B channel action upon error, A and B channel phase relationship, and output
scaling
• for each digital output: content, and polarity
• for each analog output (conventional 4-20 mA operation): content, relationship to flow
direction, and output scaling
Sensor analog output channels 11
HART Field Device Specification 3810 Series Ultrasonic Meter4. Product interfaces
AOX
TRIM
AOXCurrentTrimGain AOXOutput 4–()¥()4 AOXCurrenTrimZero++=
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• The HART slave output supports configurable preamble length.
• The HART slave supports the HART Rev. 7 commands listed in Section 8 through
Section 10.
• The HART slave does not support transfer functions.
Each analog output has individually configurable alarm selections. The selections includes:
• Very Low (3.5 mA)
• Low (4.0 mA), High (20 mA)
• Very High (20.5 mA)
• Hold Last Value
• None
Trim the analog outputs via Trim the analog outputs via HART, serial or Ethernet interfaces. The
AOXActionUponInvalidContent data point specifies the action for Analog Output 1 current
when the content is invalid. No special action is taken when set to none.
Each analog output is considered saturated if the "pre-trimmed" value is (strictly) outside the
range (3.5, 20.5) mA. Note that a value less than 4 mA should only occur if the output is invalid
and the invalid content is selected to be represented by a fixed 3.5 mA output. The database
point AOXIsSaturated shall be used to indicate the saturation status.
For each analog output, after the saturation determination is made, then the DAC -limits of (3.5,
21) mA is applied to the pre-trimmed value. The resulting value is written to the appropriate
AOXOutput database point (so that the point's meaning is consistent with the pre-HART
firmware).
The analog output trim zero and gain values (stored in database points AOXCurrentTrimZero
and AOXCurrentTrimGain, respectively) are always applied to the analog output's pretrimmed, DAC -limited value (i.e., the value stored in the database point AOXOutput) as shown
in Equation 1 (all values in milliamps except the dimensionless gain). The DAC - limits (3.5, 21)
mA is applied to the resultant trim value (AOXTRIM) and DAC -limited result shall be stored in the
database point AOXOutputTrimmed and output to the DAC.
Equation 4-1 AOXOutput Trim
The user shall be able to zero the meter (i.e., perform zero-flow calibration) via any serial,
Ethernet, or HART slave port.
12 Sensor analog output channels
4. Product interfacesHART Field Device Specification 3810 Series Ultrasonic Meter
00825-0300-3810
4.1.3 Time Stamp
A time stamp shall be calculated for each of the HART device variables when the device variable
is updated and the status is good. The time stamps shall be associated with the corresponding
data points shown in Table 4-2
Table 4-2 Device variables time stamp
Device variable Associated time stamp data point name
Uncorrected flow rate (QFlow) HARTQFlowUpdateTime
Pressure (FlowPressure) HARTPressureUpdateTime
Temperature (FlowTemperature) HARTTemperatureUpdateTime
Time stamps shall be calculated for additional device variables that indicate percent of range
and loop current.
Table 4-3 Time stamp calculations for additional device variables
.
April 2022
Device variable Associated time stamp data point name
Percent range HARTPercentRangeUpdateTime
Analog output 1 HARTAO1OutputUpdateTime
Time stamps shall:
• be unsigned 32 bit integer with least significant bit of time value representing 1/32 of
milliseconds.
• indicate time since midnight and shall rollover after 24 hours
• have units of milliseconds
Time Stamp 13
HART Field Device Specification 3810 Series Ultrasonic Meter4. Product interfaces
April 2022 00825-0300-3810
14 Time Stamp
5. Device variablesHART Field Device Specification 3810 Series Ultrasonic Meter
00825-0300-3810 April 2022
51
5. Device variables
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter does not use Device Family
commands.
5.1
Table 5-1 Device variable 0 - uncorrected flow rate
Device Variable
Number:
Classification:
Device variable 0 - uncorrected flow rate
The flow-condition volumetric flow rate is the result of applying expansion correction and flowprofile correction to the raw volumetric flow rate derived as subject to the low-flow cut-off. If
the resulting value is below the low-flow cut-off value, it is set to zero. The low-flow cut-off
volumetric flow rate (QCutOff) is the specified low-flow velocity threshold (ZeroCut) converted
to a volumetric flow rate.
0
66
Volumetric Flow
Name
Unit Codes
5.2 Device variable 6 - pressure
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter samples the input analog signal(s)
and updates the corresponding data point (LiveFlowPressure) once per second regardless of
the input selection (disabled, live, or fixed).
Every five seconds, the meter updates the “in-use” flow-condition pressure and temperature
values (FlowPressure and AbsFlowPressure) depending upon the input selection, validity of the
input data, and the selected data source upon alarm.
Uncorrected Flow Rate
(Table 11- 5 )
The flow-condition pressure is configurable (via the EnablePressureInput data point) to be:
• disabled (0)
• live (1) (4-20 mA input signal) or
• fixed (2)
Table 5-2 Device variable 6 - pressure
Device Variable
Number:
Classification:
If an input is live, then the values corresponding to the minimum and maximum input (4 and
20 mA, respectively) are specified via data points MinInputPressure and MaxInputPressure.
To configure the live pressure, plus associated alarms, configure the data points in Section
11.15.
Device variable 0 - uncorrected flow rate 15
6
65
Pressure
Name
Unit Codes
Pressure
(Table 11- 4 )
HART Field Device Specification 3810 Series Ultrasonic Meter5. Device variables
April 2022 00825-0300-3810
5.3 Device variable 7 - temperature
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter samples the input analog signal(s)
and updates the corresponding data point (LiveFlowTemperature) once per second regardless
of the input selection (disabled, live, or fixed).
Every five seconds, the meter updates the “in-use” flow-condition pressure and temperature
values (FlowTemperature) depending upon the input selection, validity of the input data and the
selected data source upon alarm.
The flow-condition temperature is configurable (via the EnableTemperatureInput data point) to
be:
• disabled (0)
• live (1) (4-20 mA input) or
• fixed (2)
Table 5-3 Device variable 7 - temperature
Device Variable
Number:
Classification:
7
64
If an input is live, then the values corresponding to the minimum and maximum input (4 and
20 mA, respectively) are specified via data points MinInputTemperature and MaxInputTemperature.
To configure the live temperature, plus associated alarms, configure the data points in Section
11.15.
Name
Unit Codes
Temperature
(Table 5-3)
5.4 HART slave device variables good status
indicators
Refer to the following table for HART Slave Device Variables database points indicating the
response status is good.
Table 5-4 Device variable good indicators
Device variable
Code - content
0 - Uncorrected flow rate 66 QFlowValidity
6 - Pressure (3rd and 4th variable only) 65 HARTIsPressureGood
7- Temperature (3rd and 4th variable only) 64 HARTIsTemperatureGood
Device variable
Classification code
Device variable
Good indicators
16 Device variable 7 - temperature
6. Dynamic variablesHART Field Device Specification 3810 Series Ultrasonic Meter
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61
6. Dynamic variables
This section documents the HART primary, secondary, tertiary, and quaternary variables.
6.1
6.2
Table 6-1 Dynamic variables configurable mapping
Dynamic Variable Device Variable Number Name
PV
SV
TV
QV
Fixed dynamic variables
There are no fixed Dynamic Variables for this device.
Dynamic variables with configurable mapping
The Rosemount 3810 Series Liquid Ultrasonic Flow Meter allows the following userconfigurable Dynamic Variables mapped to the Device Variables:
• 0 • 0 Uncorrected Flow Rate
• 0 • 0 Uncorrected Flow Rate
• 0, 6 or 7 • 0, 6, 7: PV + Pressure, Temperature
• 0, 6 or 7 • 0, 6, 7: PV + Pressure, Temperature
The default primary Dynamic Variable is Uncorrected Flow Rate for all meters.
Fixed dynamic variables 17
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