UNIDATA
Unidata Manual 6293 - Precision Water Level Instruments Issue 2.1
6
2.5 Model 6541B with Micrologger
To specify the internal Micrologger, add -C to the 6541B version you select.
2.6 Output
Options
The instrument has three output interface options:
SDI-12 Interface.
The 6541B Water Level Instrument has a Version 1.3 - compliant SDI-12 sensor
interface. The 6541B is powered all the time and measurements are instantaneously
available allowing the use of the aR0! commands. The CRCed version of this
command is also valid.
HSIO Interfaces
The 6541B has Primary and secondary interfaces. The secondary HSIO interface is
intended for connection to a Micrologger. When fitted with a Micrologger the
6541B becomes a standalone logging instrument.
4-20 mA signal Population Option
This will produce an analog signal suitable for current loop instruments used in
process control systems. The measurement range of the instrument is fully user-
programmable over the output range.
