Oldham MX62, Инструкция по установке и эксплуатации

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3.3.3. Insufficient Signal
The measuring signal has, for example, drifted below 3.2mA. Measuring is still
given though the transducer should be calibrated. This signal is not latching.
3.3.4. Alarms
The system WinPro® has three freely adjustable alarm levels within the measur-
ing range of 4-20mA. The software ConfigPro allows, for example, adjusting of
alarm levels, latching of alarms or setting of alarm thresholds for mean values
within a specified time. Further-more, alarms can be triggered in case of exceed-
ing or lower deviation of alarm levels.
For numerous gases, standard presettings are carried out at WINTER.
3.3.5. Excess of Measuring Range
If the measuring range is exceeded, the measuring signal will be higher than
20mA. Measuring is still given but the signal lies above the measuring range and
is, with various transducers, no longer as accurate. Via the software ConfigPro,
excess of measuring range can be signalled as an alarm. Usually, this alarm is
latching.
3.3.6. Resetting of Alarm Signals
There are two different types of resettings:
•
Resetting of Audible Ala rm Signals
Relays can be configured as relays for buzzers which may, in
comparison to other relays, be reset during prevailing gas concen-
trations (alarms). Such a relay is, however, only reserved for the
triggering of buzzers, horns, sirens and other audible alarm indica-
tors.
•
Resetting of Latching Alarm Signals
A latching alarm signal will last even if the gas concentration falls.
The alarm signal (with the allocated relays) is to be reset
after the gas concentration has fallen below the alarm level.