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FGM 160 – HART Output Interface Specification
Notes:
1)
:
Data from HART Transmitters is only applicable for FGM 160 systems configured
for HART Pressure and Temperature transmitters.
2)
Data from HART Transmitter 2 is only applicable for FGM 160 systems
configured for double HART transmitters.
*)
Optional units:
:
:
Table 7 – HART output parameter, optional units.
Parameter
Volume flowrate
Mass flowrate
Velocity
Pressure
Temperature
Acc./totalized volume
Acc./totalized mass
Optional units
MMCFD (Million Cubic Foot per Day),
MMSCFD (Million Standard Cubic Foot per Day)
lbs/h
ft/s
kPa A, psi A, kg/cm2 Abs
F
MMCF, MMSCF
lbs
For configuration of HART output parameters units, the FGM 160 Operator &
Service Console must be used.
All HART variable values will be transmitted as floating-point numbers, 32-bit single
precision (IEEE 754), according to HART specification HCF_SPEC-127.
4.8.1 HART Variable Unit Codes
The HART variable unit code(s) is included in the reply of HART command 1 (read
primary variable) and HART command 3 (read current and four dynamic variables).
The following HART unit codes are implemented in FGM 160:
Table 8 - HART unit codes.
Engineering unit
m3/h
MMCFD
kg/h
lbs/h
m/s
ft/s
kg/m3
g
bar A
kPa A
psi A
kg/cm2 Abs
C
F
m3
MMCF
kg
lbs
%
-- (none)
72.120.605/C
HART unit code
19
242
75
82
21
20
92
60
7
12
6
10
32
33
43
243
61
63
57
251
*)
*)
Note:
*)
: Unit codes 242 and 243 are
manufacturer specific definitions.
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