Setra-system Model 231RS Uživatelský manuál Strana 14
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4.0 CONFIGURATION
Range Selection Switch: The unit is set to the highest range when calibrated at the factory. To select the other ranges,
slide the switch to the right. Important: Push “zero” button after installing the Model 231RS, and after changing
range.
Auto Zero Button: Press and hold the “ZERO” push-button for 2 seconds to automatically reset zero or provide contact
closure on “Remote Zero, see gure 4 and gure 5. Sensors must be vented to atmosphere.
Electrical Output: The unit is set at the factory to 4-20 mA. To select another output, move the slide switch to the
right. Push the “Zero” button after changing the electrical output mode. Sensors must be vented to atmosphere.
Electrical Connections: Electrical termination for power supply, 3-wire voltage output and 2-wire true 4-20 mA cur-
rent output, and remote zero wiring.
BAR/PSI: Jumper selectable engineering units in Bar ranges or PSI.
A. REV/NORM:
A.REV: Analog Reverse: When in reverse mode, the output increases when the dierential pressure decreases and
decreases as pressure increases.
NORM: When in Normal mode output increases as pressure increases and decreases as pressure decreases.
SLOW/FAST: When Slow mode is selected, 5-second averaging is provided for surge damping.
BI-DIR/UNI-DIR: Select UNI-Directional or BI-Directional mode.
Unidirectional mode measures from 0 to full scale dierential pressure.
Bidirectional mode measures pressure from minus 1/2 of full scale to plus 1/2 of full scale dierential pressure. Output
will read 1/2 full scale when dierential pressure is zero.
SWAP/NORM: Jumper selectable Port Swap feature eliminates costly re-plumbing when incorrectly installed or re-
placed. Go from NORMAL to SWAP and the jumper makes the “HI” Port “LO” and the “LO” port “HI.
High Pressure Electrical Terminals (HI): High pressure sensor termination.
Low Pressure Electrical Terminals (LO): Low pressure sensor termination.
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