==Manufacturer codes==
Each manufacturer that participates in the HART convention is assigned an identification number. This number is communicated as part of the basic device identification command used when first connecting to a device. (Note the list below is non-exhaustive and deprecated (Dated Nov. 15th 1996), some of the corporations listed are now defunct and the list is constantly in flux with new manufacturers entering the market. Also, in the current version of the standard devices report ID codes in hexadecimal instead of decimal values.)<ref>FieldComm Group ''https://support.fieldcommgroup.org/en/support/solutions/articles/8000083841-current-list-of-hart-manufacturer-id-codes'', retrieved 2020-05-04</ref>
{| class="wikitable"
|+Manufacturer codes<ref>HART - SMART Communications Protocol, Common Tables Document, Revision: 9.0, Version:A Nov/15/96 (HCF_SPEC-183)</ref>
!ID
!Manufacturer
!ID
!Manufacturer
!ID
!Manufacturer
|-
|1
|[[Acromag]]
|37
|[[Ronan (company)|Ronan]]
|73
|[[Elcon Instruments]]
|-
|2
|[[Allen-Bradley]]
|38
|[[Rosemount Inc.|Rosemount]]
|74
|[[EMCO Enterprises|EMCO]]
|-
|3
|[[Ametek]]
|39
|[[Peek Measurement]]
|75
|[[Termiflex]]
|-
|4
|[[Analog Devices]]
|40
|[[Schlumberger]]
|76
|[[VAF Instruments]]
|-
|5
|[[Bailey (company)|Bailey]]
|41
|[[Sensall]]
|77
|[[Westlock Controls]]
|-
|6
|[[Beckman Coulter|Beckman]]
|42
|[[Siemens]]
|78
|[[Drexelbrook]]
|-
|7
|[[Bell Microsensor]]
|43
|[[Camille Bauer]]
|79
|
|-
|8
|[[Bourns, Inc.|Bourns]]
|44
|[[Toshiba]]
|80
|[[K TEK]]
|-
|9
|[[Bristol Babcock]]
|45
|[[Transmation]]
|81
|[[Flowdata]]
|-
|10
|[[Brooks Instrument]]
|46
|[[Rosemount Analytical]]
|82
|[[Drägerwerk|Draeger]]
|-
|11
|[[Eurotherm|Chessell]]
|47
|[[Valmet]]
|83
|[[Raytek]]
|-
|12
|[[Combustion Engineering]]
|48
|[[Valtek]]
|84
|[[Meridian Instruments]]
|-
|13
|[[Daniel Industries]]
|49
|[[Varec]]
|85
|[[BTG plc|BTG]]
|-
|14
|[[Delta Electric Company|Delta]]
|50
|[[Viatran]]
|86
|[[Magnetrol]]
|-
|15
|[[Dieterich Standard]]
|51
|[[Weed Eater|Weed]]
|87
|[[Neles Jamesbury]]
|-
|16
|[[Dohrmann (company)|Dohrmann]]
|52
|[[Westinghouse Electric Corporation|Westinghouse]]
|88
|[[Milltronics]]
|-
|17
|[[Endress+Hauser]]
|53
|[[Xomox]]
|89
|[[HELIOS]]
|-
|18
|[[Fischer and Porter]]
|54
|[[Yamatake]]
|90
|[[Anderson Instrument Company]]
|-
|19
|[[Emerson Electric|Fisher Controls]]
|55
|[[Yokogawa Electric|Yokogawa]]
|91
|[[INOR]]
|-
|20
|[[Invensys|Foxboro]]
|56
|[[Nuovo Pignone]]
|92
|[[ROBERTSHAW]]
|-
|21
|[[Fuji Electric|Fuji]]
|57
|[[Promac]]
|93
|[[Pepperl+Fuchs]]
|-
|22
|[[ABB]] - Hartmann and Braun
|58
|[[Exac Corporation]]
|94
|[[ACCUTECH]]
|-
|23
|[[Honeywell]]
|59
|[[KDG Mobrey]]
|95
|[[Flow Measurement]]
|-
|24
|[[ITT Barton]]
|60
|[[Acrom Control System]]
|96
|[[KAMSTRUP]]
|-
|25
|[[KayRay Sensall]]
|61
|[[Princo]]
|97
|[[Knick (company)|Knick]]
|-
|26
|[[J. D. Irving|Kent]]
|62
|[[Smar]]
|98
|VEGA
|-
|27
|[[Leeds & Northrup|Leeds and Northrup]]
|63
|[[Eckardt (company)|Eckardt]]
|99
|[[MTS SYS CORPS SENSORS]]
|-
|28
|[[Leslie Controls|Leslie]]
|64
|[[Measurement Technology]]
|100
|[[Oval (company)|Oval]]
|-
|29
|[[M System Co]]
|65
|[[Applied System Technologies]]
|101
|[[Masoneilan DRESSER]]
|-
|30
|[[Measurex]]
|66
|[[Samson AG|Samson]]
|102
|[[Inventec Besta|Besta]]
|-
|31
|[[Micro Motion]]
|67
|[[Sparling Instruments]]
|103
|[[Ohmart]]
|-
|32
|[[Moore Industries]]
|68
|[[Fireye]]
|188
|[[Aplisens]]
|-
|33
|[[Moore Products]]
|69
|[[Krohne]]
|250
|not used
|-
|34
|[[Ohkura Electric]]
|70
|[[Betz Equipment]]
|251
|none
|-
|35
|[[Paine (company)|Paine]]
|71
|Druck
|252
|unknown
|-
|36
|[[Rochester Instrument Systems]]
|72
|SOR
|253
|special
|-
|
|
|60C2
|[[Rhosonics Analytical|Rhosonics Analytical B.V.]]
|24807
|[[Barksdale Control Products]]
|}
==References==
{{Reflist}}
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