Instrument Configuration; Channel Configuration - Hach ORBISPHERE G1100 User Manual

8.4.1 Instrument configuration

For some events (sensor out, purge failure, etc.) the actual measurement is not significant, but
the PLC needs to know how the analog output behaves in these cases. Two "Event indication
modes" are available:
Standard mode (default)
•
Extended mode
•
Standard event indication
Analog output
Gas concentration
Temperature
Extended event indication
The "Extended event indication" mode is only available when the 4-20 mA output is selected. In
this mode, the range between 0 mA and 4 mA is used to indicate selected events. The events
are defined using the channel configuration option. Refer to
Note: This mode is not available for the voltage output versions of the instrument.

8.4.2 Channel configuration

Select analog output range of current:
•
4-20 mA or 0-20 mA
The 4-20 mA range (recommended) allows for an
•
extended event indication mode that can be selected and
configured (default = standard mode)
Note: Features of instrument with a voltage analog output are similar
to the 0-20 mA features.
Event output range
0-20 mA 4-20 mA
20 mA 20 mA
20 mA 20 mA
Set the type of measurement that will be transmitted through
each output channel, and the output characteristics.
Meas. type: Select between the type of measurements
•
available in the rolling list.
Characteristics: Select either Linear, Tri-linear or None.
•
Refer to
Limits: Press the configure button to adjust the analog
•
output set points for each output. Enter values in the
appropriate text boxes. In Linear mode, only the ML and
MH values can be adjusted. Tri linear mode allows all
limits to be adjusted, and the None mode denies access to
this screen.
Inputs/Outputs Menu
0/5 V
Channel out
•
Sensor out
•
5 V
Thermal cut-off
•
Interfering gas error
•
Channel out
•
5 V
Sensor out
•
Channel configuration on page
Analog output characteristics on page
Event
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