17266HSH MODBUS TRANSMITTER | PRESSURE/TEMPERATURE MULTIVARIABLE | OI/266HSHMT-EN REV. A
7.4 Configuring the transmitter without an
integral LCD HMI
The “lower range value” and “span” parameters can be set
directly on the transmitter using the external or internal
push buttons.
The transmitter has been calibrated by the manufacturer
based on the order information. The tag plate contains
information on the “lower range value” and “upper range
value” set. In general, the following applies:
Important. Reducing station with adjustable pressure and
reference displays can be used as pressure generators.
When making the connection, please ensure that there are no
residual fluids (for gaseous testing materials) or air bubbles
(for fluid testing materials) in the impulse lines, since these
can lead to errors during inspection. Any potential measuring
error for the pressure generator should be at least three times
smaller than the desired measuring error for the transmitter. It
is recommended that the damping is set to 1 second.
7.6 HMI as feedback of the local push button operations
Message Description
! Oper Done
! Proc Too
Low
The Pressure measured in input is too low and not acceptable for the requested operation
! Proc Too
High
The Pressure measured in input is too high and not acceptable for the requested operation
! New URV
Error
! Span Error
difference lower
! Oper
Disabled
The push button operation has been refused because the Write Protection is enabled.
! LRV Too
Low
LRV Too
High
URV Too
Low
URV Too
High
Armed
operation
7.7 Correction of zero shift caused by installation with PV Zero Bias / Offset
7.5 LRV and URV configuration
— Apply the pressure for the “lower range value” and
wait approx. 30 s until it has stabilized.
— Press the “Z” button (internal or external) for at least
5 seconds. This sets the output current to 4 mA.
— Apply the pressure for the “upper range value” and
wait approx. 30 s until it has stabilized.
— Press the “S” button (internal or external) for at least 5
seconds. This sets the output current to 20 mA.
— If required, reset the damping to its original value.
— Record the new settings. The respective parameter
will be stored in the non-volatile memory 10 seconds
after the “Z” or “S” buttons are last pressed.
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