Technical data Deltabar PMD75B HART
70 Endress+Hauser
Linearization The device's linearization function allows the user to convert the measured value to any
units of pressure or volume. User-defined linearization tables of up to 32 value pairs can
be entered if necessary.
Flow measurement with
Deltabar and differential
pressure sensor
Low flow cut off: when activated, this function suppresses small flows which can lead to
large fluctuations in the measured value.
Low flow cut off is set at the factory to 5% if the current output is set to "Square".
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 measured values are assigned to the device variables as follows:
Measured values for PV (primary variable)
Corrected pressure (following position correction and damping) or scaled variable
Measured values for SV (secondary variable)
Sensor temperature
Measured values for TV (tertiary variable)
Electronics temperature
Measured values for QV (quaternary (fourth) variable)
Pressure downstream from the sensor
Choice of HART device variables
• Pressure (after position correction and damping)
• Sensor temperature
• Scaled variable
• Electronics temperature
• Pressure downstream from the sensor (raw values without correction)
• Current output
• Current output feedback signal (Heartbeat Technology)
• Terminal voltage (Heartbeat Technology)
• Signal noise and pressure median value (Heartbeat Technology)
Supported functions
• Burst mode
• Additional transmitter status
• Device locking
Wireless HART data • Minimum starting voltage: 10.5 V
• Start-up current: <3.6 mA
• Starting time: <5 s
• Minimum operating voltage: 10.5 V
• Multidrop current: 4 mA
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