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S E N S O R T R I M , S E L E CT
T Y P E
F U L L Z E R O S TAT
T R I M T R I M T R I M T R I M
S t a t V a l u e r e a d
[ 1 . 1 5 4
]
M P a
I s
s t a t
v a l u e O K ?
[ 1 . 1 5 4
]
M P a
N O
E n t e r
s t a t
v a l u e
[ . . . . . . .
]
M P a
< - -
- - >
C L R
SENSOR TRIM , SELECT
TYPE
FULL ZERO STAT
TRIM TRIM
TRIM
T r i m w i l l
b e s e t
a s a t f a c t o r y
Use of the Green Keys - TRIM - Sensor Trimming - STATIC TRIM
(for 600T, 600T EN and Deltapi K Pressure Transmitter )
Using this procedure it is possible to trim the value of the static pressure used
F A C T
by the transmitters to perform the static pressure compensation. The
transmitter should be connected to a pressure source of known value: the
atmospheric or the process pressure can be used for static trimming. The
applied pressure should be applied on both sides of the measuring diaphragm:
an accuracy of the reference meter of 1% of the max. static pressure is
P R O
sufficient for a good static compensation. Selecting this option, the following
C E E D
message is displayed: "WARNING- Control loop should be in manual -
PROCEED". Pressing F4 the next display appears giving indication of the
value read by the transmitter. Press F4 to PROCEED: the next display
requests to confirm if the read value is OK or not. If it is OK pressing F4 for
YES you will leave the procedure while, if it is not, pressing F1 the following
Y E S
display appears.
Using the F1 or F2 keys and the numeric keypad the known value of the static
pressure should be entered and confirmed pressing the F4 key.
Leaving the procedure a warning message warns that the loop can be
returned to automatic control.
E N T R
For 600T Transmitters Revision 5.2 and 600T EN - FACTORY TRIM
As already mentioned, a fourth option is presented for the 600T and 600T
EN
Transmitters: it allows the user to restore the original factory
FACT
calibration. Selecting with the F4 key this option the following warning
TRIM
message will be displayed: "WARNING - Control loop should be in
manual - PROCEED". Pressing the PROCEED key to acknowledge the
message and continue the following display appears: the user can abort
the procedure pressing ESCape or accept the selection pressing F4 to
PROCEED . In this case the small T blinks in the upper right corner
P R O
signalling that the appropriate command is sent to the transmitter. A
C E E D
warning message warns that the control loop can be returned to automatic
control.
- 39 -
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