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Determine which configuration to use based on the upgrade scenario:
— Use the existing configuration if available. The configuration file of the
LevelMaster contains calibration information for the internal sensor assembly
(sensor coil). Since the sensor assembly is not being changed in the upgrade,
the calibration data remains the same and it is still applicable to the unit.
IMPORTANT NOTE: Because the existing configuration corresponds
to an electronic board that is different than the new board, the accuracy
of the unit will be affected by using an existing file.
— Use a pre-defined (default) configuration file if the existing configuration file
cannot be obtained. MasterLink version 2.0 provides configuration files for dual
batteryless float operation for different unit lengths. The files for the new
electronic board are located in the MasterLink\DefaultDat\7.0 Head board folder.
The names of the default files indicate which sensor length they apply to.
3.4
Required tools and materials
The following items are needed to perform the upgrade
Tools and material:
— Phillips screwdriver
— Small slotted screwdriver
— 24 inch pipe wrench
— Wooden blocks or other means to support the sensor on the floor when
removed from the tank
— Grounding strap
Cables:
Direct connection to the electronic board is required for configuration and monitoring
during the upgrade. The cables and adapters listed in Table 2 (page 7) are used for
this connection.
IMPORTANT NOTES: Different cable adapters and RS485-to-RS232
converter cables are required for each, the new board (part number
2104836-001) and the previous board (part number 2018546-005).
Make sure you select the correct cables.
CAUTION – Equipment damage. The RS485-to-RS232 converter
cables have 1 or 2 batteries (9 Vdc) which supply power to the boards
during direct connection. No additional voltage source is required
during direct connection for configuration.
Do not use two batteries to suply power to the new board (part number
2104836-001). The board will be damaged when the supplied power is
greater than 15 Vdc (2 fully charged 9 Vdc batteries can supply up to
18 Vdc).
To prevent battery drain when converter cables are not in use, make
sure the red wire is removed from the positive terminal contact on the
battery holder (Figure 1).
6 | 2105824-001 rev. AA
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