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After setting a new pressure unit, all entries for pressure are converted to the new unit, using the following
rules:
Tag (1, 3, 1)
An inventory "Tag" identification number may be stored in transmitter memory (8 characters maximum).
Software tag is a single question mark by default.
Long Tag (1, 3, 2)
An inventory "Long Tag" string (32 byte) may be stored in transmitter memory.
Descriptor (1, 3, 5, 2)
For further transmitter description, e.g. location, function, position, etc., a 16 character text can be input.
Message (1, 3, 5, 3)
A 20 character message can be fixed and displayed on the Hart Communicator.
SV Electronics Temperature (1, 1, 4)
Electronics temperature, i.e. the temperature measured on the electronics housing, is used for reference and
factory diagnostics only.
TV Snout Temperature (1, 1, 5)
Temperature measured on Transducer Snout, only for fluid-free models (HI), otherwise it equals to 0.
Poll Address (1, 4, 2, 3, 1)
Multidrop mode allows to have more than one transmitter (up to 15) on a single loop. When this value is diffe-
rent from zero, the transmitter is in Multidrop mode.
For instance a Multidrop mode would be a group of Hart devices wired in parallel on a single fed loop and each
device being assigned a unique poll address (1-15).
The Hart communicator would prompt for the single transmitter address to communicate with and would poll
that particular device only. All others would remain unvaried.
Burst configuration (1, 4, 2, 3, 4)
If the transmitter is used in Burst Mode, the sensor displays one-way digital communications from the transmit-
ter to the host.
In this case communication speed is faster as the transmitter has not to be polled to send information. Data
transmitted in Burst Mode include Pressure Variable, Analog Output value, pressure in percentage of range
and Diagnostic Data.
Access to other information can still be obtained through normal Hart command.
Reset to factory default (1, 2, 4)
The transmitter factory settings (including zero and span) can be restored. The list of parameters restored is
reported below:
1. Restore LRV and URV to their values at shipment.
2. Restore the Pressure Unit (bar, psi, etc.) to its value at shipment.
3. Set the Analog Output Alarm Level to Low.
4. Remove all Pressure Damping.
5. Clear all Sensor and Analog Output Trim values.
6. Clear Burst Mode.
7. Restore the Address to Zero.
8. Restore the R-Cal option to its value at shipment.
80636B_MAN_HMF - HWF_05-2022_ENG
1 psi = 0.068947 bar = 0.0068947 MPa = 0.070309 kgf/cm²
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