Endress+Hauser Micropilot NMR84, Руководство по эксплуатации

Страница: 61 / 256

Micropilot NMR84 Commissioning
Hauser 61
Defining the type of measured value
This setting can be skipped for a connected Prothermo NMT5xx and NMT8x as the
type of measured value is automatically recognized by the Micropilot NMR8x in this
case.
• The measured values can only be used in the system if the unit of the assigned
HART variable fits the type of measured value. The HART variable assigned to
Output temperature , for example, has to be in °C or °F.
• A HART variable with unit "%" can not be used for Output level . Instead, the HART
variable must be in mm, m, ft or in.
The type of measured value must be specified for each HART variable (PV, SV, TV and QV).
To do so, proceed as follows:
1. Navigate to: Setup → Advanced setup → Input/output → HART devices
 There is a submenu for each connected HART device.
2. For each device go to the corresponding submenu.
3. If the device measures a pressure:
Go to the Output pressure parameter (→  128) and specify which of the four
HART variables contains the measured pressure. Only a HART variable with a
pressure unit may be selected.
4. If the device measures a density:
Go to the Output density parameter (→  129) and specify which of the four HART
variables contains the measured density. Only a HART variable with a density unit
may be selected.
5. If the device measures a temperature:
Go to the Output temperature parameter (→  129) and specify which of the four
HART variables contains the measured temperature. Only a HART variable with a
temperature unit may be selected.
6. If the device measures the vapor temperature:
Go to the Output vapor temperature parameter (→  130) and specify which of
the four HART variables contains the measured vapor temperature. Only a HART
variable with a temperature unit may be selected.
7. If the device measures a level:
Go to the Output level parameter (→  130) and specify which of the four HART
variables contains the measured level. Only a HART variable with a level unit (not "%")
may be selected.
Disconnecting HART devices
When a HART device is disconnected from the device, it must also be logically removed as
follows:
1. Navigate to Setup → Advanced setup → Input/output → HART devices → Forget
device → Forget device
2. Select the HART device to be removed.
This procedure is also necessary if a defective device is exchanged.