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13.6 In trin sic Safety Con sid er ations
Intrinsic safety approvals for the MST2000 are pending. Contact the factory for additional information
involving hazardous applications with the use of safety barriers.
13.7 HART® Com mand In for ma tion
The MST2000 transmitter is compliant with HART
®
Command Revision 5.1. The following commands
are supported. Reference HART
®
Document HCF_LIT-20 (HART® Technical Overview) for additional
information.
COMMAND HART
®
Command Set Description
0 Universal Read Unique Identifier
1 Universal Read Primary Variable (pv)
2 Universal Read (pv) current and percent of range
3 Universal Read (pv) current and four predefined variables
6 Universal Write Polling Address
11 Universal Read Unique Identifier associated with Tag
12 Universal Read Message
13 Universal Read Tag, Descriptor, Date
14 Universal Read sensor information
15 Universal Read output information
16 Universal Read final assembly number
17 Universal Write message
18 Universal Write tag, descriptor, date
19 Universal Write final assembly number
35 Common Practice Write (pv) range values
50 Common Practice Read dynamic variable assignments
51 Common Practice Write dynamic variable assignments
59 Common Practice Write number of response preambles
pv = primary vari able
13.8 Thermo Brandt In stru ments HART
®
Man u fac turer Iden ti fi ca tion Code = 96 Hex, 150 Dec i mal
13.9 MST2000 HART
®
Trans mit ter Vari able Code As sign ments.
Vari able Code ENGLISH UNIT VERSION METRIC UNIT VERSION
0 or 1 DP in Inches of W.C. D.P. In Mil li me ters of W.C.
2 Stan dard Cu bic Feet Per Min ute (SCFM) Nor mal Cu bic Me ters Per Hour (NM3-HR)
3 Ac tual Cu bic Feet per Min ute (ACFM) Cu bic Me ters per Hour (M3-HR)
4 Mass in Pounds per Hour (LB/HR) Mass in Ki lo grams per Hour (KG-HR)
5 Ex ter nal Tem per a ture in Degree Fahr en heit Ex ter nal Tem per a ture in De gree Cel sius
6 Ex ter nal Ab so lute Pres sure in PSIA Ex ter nal Ab so lute Pres sure in BAR
MST2000 HART® Communications Information OPERATION MANUAL
Page 28 MST2000 Multivariable SMARTFLOW
®
Transmitter Brandt Instruments, Inc.