SMAR ld301, Operation And Maintenance Instruction Manual

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LD301 – Operation and Maintenance Instruction Manual
4.2
1 - Inserting the handle of the magnetic tool in ( Z ), the transmitter passes from the normal
measurement state to the transmitter configuration state. The transmitter software automatically starts
to display the available functions in a cyclic routine. The group of functions displayed depends on the
mode selected for the
LD301 , either Transmitter or Controller.
2 - In order to reach the desired option, browse the options, wait until they are displayed and move the
magnetic tool from (
Z) to ( S). Refer to Figure 4.2 – Programming Tree Using Local Adjustment, in order
to know the position of the desired option. By placing the magnetic tool once again in ( Z) , it is possible
to browse for other options within this new branch.
3 - The procedure to reach the desired option is similar to the one described on the previous item, for
the whole hierarchical level of the programming tree.
SIMPLE LOCAL ADJUSTMENT
A
C
T
I
O
N
TRANSMITTER MODE CONTROLLER MODE
COMPLETE LOCAL
ADJUSTMENT
Z Selects the Lower Range Value Moves among options in OPERATION and TOTAL Moves among all the options
S Selects the Upper Range Value Activates the selected Functions Activates the selected Functions
Table 4.2 - Local Adjustment Description
NOTE:
For LD301 versions prior to a V6.00 , the digital display shall be number 214-0108 as per
spare parts list for LD301 V5.xx.
For LD301 versions V6.xx, the digital display shall be number 400-0559, as per the updated
spare parts list
Simple Local Adjust
The LD301 works differently when a simple local adjustment is selected in the transmitter mode and
in the controller mode. In the transmitter mode, the simple local adjustment is used for Zero and Span
calibration, and in the controller mode, it restricts the use of the configuration tree to the OPERATION
and TOTALIZATION functions.
Zero and Span Reranging
The LD301 working in the transmitter mode can be very easily calibrated. It requires only Zero and
Span adjustment in accordance with the working range.
To make these adjustments, the instrument must be configured as "transmitter" (XMTR).
Via HART configurator or by using item "MODE" in option "CONF" of the local adjustment; the jumpers
shall be configured for simple local adjustment. In case the
LD301 display is not connected, the simple
local adjustment is automatically activated.
Zero calibration with reference shall be done as follows:
Apply the Lower Value pressure.
Wait for the pressure to stabilize.
Insert the magnetic tool in the ZERO adjustment hole. (See Figure 4.1)
Wait 2 seconds. The transmitter should be reading 4 mA.
Remove the tool.
Zero calibration with reference does not affect the span. In order to change the span, the following
procedure shall be observed:
Apply the Upper Value pressure.
Wait for the pressure to stabilize.
Insert the magnetic tool in the SPAN adjustment hole.
Wait 2 seconds. The transmitter should be reading 20 mA.
Remove the tool.
Zero adjustment causes zero elevation / suppression and a new upper value (URV) is calculated in
accordance with the effective span. In case the resulting URV is higher than the Upper Limit Value
(URL), the URV will be limited to the URL value, and the span will be automatically affected.
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