Emerson 3051S Specifikace stáhnout pdf (Strana 58)

Reference Manual

00809-0200-4801, Rev CA

July 2010

Rosemount 3051S

3-24

Figure 3-9. Download Mass

Flow Configuration File

Selected

Device

(Highlighted)

Send Mass Flow

Configuration File to

Selected Device

Status Confirms Mass

Flow Configuration File

Installations

Table 3-7. Mass Flow Block Device - Specific Parameter Values

Index Parameter

Data Type/

Structure

Store Size Valid Range Initial Value Units Mode Description

14 DIFFERENTIAL

_PRESSURE

DS-65 D 5 inH20

@68°F

MAN The differential pressure status and

value

15 DIFFERENTIAL

_PRESSURE_

SOURCE

Unsigned16 S 2 10: DP Sensor

(scaled)

10 E O/S The channel through which the

differential pressure is communicated

(and converted to the proper units)

16 PRESSURE DS-65 D 5 Psia MAN,

O/S

(1)

The absolute pressure status and value

17 PRESSURE_

SOURCE

Unsigned16 S 2 5: Absolute

Pressure

(A0.OUT)

8: Absolute

Pressure

(CAS_IN

shadow)

255: Constant

8 E O/S The channel through which the absolute

pressure is communicated. When

AO.OUT value is used, FAULT_STATE

is used if status goes bad. When

CAS_IN shadow is used, bad

status/value will be propagated to the

mass flow block. If a value of “Constant”

is specified, the PRESSURE parameter

becomes writable in O/S and the

constant value is used in the calculation.

18 TEMPERATUR

DS-65 D 5 °F MAN,

O/S

(2)

The process temperature status and

value

19 TEMPERATUR

E_SOURCE

Unsigned16 S 2 6: Process

Temperature

(CAS_IN

shadow)

9: Process

Temperature

(CAS_IN

shadow)

255: Constant

9 E O/S The channel through which the process

temperature is communicated. When

AO.OUT value is used, FAULT_STATE

is used if status goes bad. When

CAS_IN shadow is used, bad

status/value will be propagated to the

mass flow block. If a value of “Constant”

is specified, the TEMPERATURE

parameter becomes writable in O/S and

the constant value is used in the

calculation.

(1) PRESSURE can be written in O/S mode if the PRESSURE_SOURCE is set to “Constant”

(2) TEMPERATURE can be written in O/S mode if the TEMPERATURE_SOURCE is set to “Constant”

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