SMAR LD290, Operation And Maintance Manual

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LD290
– Operation and Maintenance Instruction Manual
3.2
( S ), respectively. Table 3.2 shows the action performed by the magnetic tool while inserted in ( Z ) and
( S) in accordance with the selected adjustment type.
Browsing the functions and their branches works as follows:
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.
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.
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 3.2, 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.
Ação Simple Local Adjustment Complete Local Adjustment
Z Selects the Lower Range Value Moves among all the options
S Selects the Upper Range Value Activates the selected Functions
Table 3.2 - Local Adjustment Description
NOTE
For LD290 versions prior to a V6.00 , the digital display shall be number 214-0108 as per spare
parts list for LD290 V5.xx.
For LD290 versions V6.xx, the digital display shall be number 400-0559, as per the updated
spare parts list
Simple Local Adjustment
The
LD290 allows, only, the calibration of the values inferior and superior in this configuration.
Zero and Span Reranging
The
LD290 can be very easily calibrated. It requires only Zero and Span adjustment in accordance with
the working range.
The jumpers shall be configured for simple local adjustment. In case the LD290 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 3.1)
✓
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.