REV 0, June 2005Page 178
Operation Manual SUPREMA
6. Startup
Note: Care must be taken to ensure that the selected values are correct and valid.
Option field “Measure Gas”: Select the measurement gas (gas or vapor to be monitored).
Option field “Zero Gas”: Select the zero gas (gas used to adjust the zero point of the sensor)
Option field “Reference Gas”: Select the reference gas (gas used to calibrate the sensitivity of
the sensor when the measurement gas is difficult to handle).
Note: If the measurement gas (the gas or vapor to be monitored) is used to check
and calibrate the sensor attached to the input, the same gas as that appearing in
the field “Measure Gas” is to be selected in the option field “Reference Gas”. (In
the “Maintain/Calibration” menu, the gas selected in the “Reference Gas” field
appears as the test gas.)
For the zero gas and the reference gas, it is possible to assign relay driver outputs for remote
calibrations. These outputs can then be used to actuate valves for supplying zero or reference
gas. The option fields “Valve No.” (“Valve control for Automatic Calibration”) are used for this.
Warning: It is absolutely necessary to make sure that no alarms are assigned to
the outputs assigned here.
6.3.6.2.3 Alarms Menu
Up to four alarms per input can be configured. Per alarm, a limit value can be set, which is
monitored to determine whether it is crossed in one direction or the other. Each alarm can be
set to be either latching or non-latching.
Check box “Upper” (“Upper limit”): The assigned alarms are set to be either of the “over” or
“under” type. If this box is checked, the alarm is of the “over” type.
Check box “latched”: The assigned alarms are set to be latching or non-latching. If this box is
checked, the alarm is latching.
Note: This property has an effect on the behavior of the front-panel LEDs, on what
is shown in the “Measure” menu, and on the relay outputs assigned to the alarm.
Input field “Limit Values” (“Limit”): An alarm is triggered when the measurement value exceeds
or falls below the limit value set here.
Warning: When the limit values are entered via the PC operating software, be sure
to use decimal separators in the PC operating system to prevent incorrect
interpretation of the entered value.
Note: Alarms which are not required can be deactivated in this field. To do this,
actuate the left cursor key until only zeros appear in the field. Then actuate the
lower cursor key: The content of the field is deleted (display: “——”). The alarm is
now deactivated (PC operating software: Delete Field Contents (Del key, then
confirm by pressing Enter).
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