Model OUM980 with OUSAF21 Inline Sensor
General Information
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There are two analog current outputs from the unit. The range of each can be independently set to be any range within the
measurement range of the instrument. One output is configured to operate with measurement baseline shift commands, while the
other tracks full scale of the instrument.
The analog current outputs (4-20mA) will operate with loads up to 750 ohms. These outputs are galvanically isolated and conform
to NAMUR
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Standard.
Model OUM980 is supplied as standard with four digital inputs and three digital output relays.
The digital inputs can be configured to perform a variety of functions such as baseline and sensor lamp off/on.
The outputs can be connected to a PLC for inclusion in a control scheme, for simple valve operation or for local indication (alarms)
and annunciation. Alarm status indication is provided on the front panel display.
All digital inputs are optically isolated.
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NAMUR standard limit detection when enabled is set to a BAD if the signal level is above 21 mA or below 3.6 mA for more than 4 seconds. The BAD status is cleared
when the signal returns to the normal 4-20 mA range.
