Technical data
Deltabar PMD78B HART
76
Hauser
Linearization
The device's linearization function allows the user to convert the measured value to any
units of height or volume. User-defined linearization tables of up to 32 value pairs can be
entered if necessary.
Protocol-specific data
HART
• Manufacturer ID: 17 (0x11{hex})
• Device type ID: 0x1131
• Device revision: 1
• HART specification: 7
• DD revision: 1
• Device description files (DTM, DD) information and files at:
•
www.endress.com
•
www.fieldcommgroup.org
• HART load: min. 250 Ohm
HART device variables (preset at the factory)
The following measured values are assigned to the device variables at the factory:
Device variable
Measured value
Primary variable (PV)
Pressure
Secondary variable (SV)
Sensor temperature
Tertiary variable (TV)
Electronics temperature
Quaternary variable (QV)
Sensor pressure
1)
The PV is always applied to the current output.
2)
The pressure is the calculated signal after damping and position adjustment.
3)
The sensor pressure is the raw sensor signal before damping and position adjustment.
The assignment of the measured values to the device variables can be changed in the
following submenu:
Application → HART output → HART output
In a HART Multidrop loop, only one device may use the analog current value for signal
transmission. For all other devices in the
"Loop current mode" parameter
, select the
Disable
option.
Choice of HART device variables
•
Pressure
option (after position correction and damping)
• Scaled variable
• Sensor temperature
• Sensor pressure
Sensor Pressure is the raw signal from sensor before damping and position adjustment.
• Electronics temperature
• Terminal current
The terminal current is the read-back current on terminal block.
• Terminal voltage 1
Visibility depends on order options or device settings
•
Noise of pressure signal
option and
Median of pressure signal
option
Visible if Heartbeat Technology ordered
• Percent of range
• Loop current
The loop current is the output current set by the applied pressure.