Precision Water Level Instrument
Unidata Manual 6293 - Precision Water Level Instruments Issue 2.1
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8.7 Field
Installation
Do the following:
1. Unscrew the lid of the 6541 and remove the battery pack.
2. Remove the four screws that secure the metal frame on which the PCB and
LCD are mounted.
3. Remove the cable between the PCB and the instrument from the top of the
instrument housing.
4. Connect the dual-output PCB to the main PCB using the 14 pin header cable
supplied and then mount the dual output PCB on the main PCB.
5. Re-connect the cable to the instrument - see the illustrations for the correct
orientation.
6. Re-fit the PCB bracket.
7. Re-connect the battery pack and then replace the cover on the unit.
8.8 6541S/B 4-20mA Option
The 6541S/B 4-20mA option converts the digital level value from a 6541
Precision Water Level Instrument to an analog 4-20mA signal. This option may
be fitted in the factory by UNIDATA.
For more details refer to section 4.6 Current Loop Interface.
