Dwyer UXF2 - Manual (Page 74)

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4.5.7. Setting the DO output
Description
Selects the output of total pulses and statuses (alarm, flow switch, total switch, etc.).
Settable ranges (common to DO1 and DO2)
NOT USED : Do not use the contact output.
+TOTAL PULSE : Output the forward total pulses.
–TOTAL PULSE : Output the reverse total pulses.
FLOW SPAN-2 : Select a contact output at SPAN-2 measurement status (forward automatic 2 ranges,
forward/reverse automatic 2 ranges).
ALARM
HARDWARE : Select a contact output at EEPROM error.
PROCESS : Select a contact output when wave is not received or is unstable.
FLOW SWITCH
UPPER SWITCH : Select a contact output when flow rate is above the setting.
LOWER SWITCH : Select a contact output when flow rate is below the setting.
TOTAL SWITCH : Select a contact output when total value exceeds the setting.
CONTACT ACTION
ACTIVE ON : Normally OFF (DO1) or normally open (DO2).
ACTIVE OFF : Normally ON (DO1) or normally closed (DO2).
Note: DO output specifications
DO1 : Open collector, contact capacity 30 V DC, 0.1 A.
When total pulse output is selected (See 4.5.6.1)
1 pulse/day to 100 pulses/s (at full scale flow rate).
Pulse width: 5, 10, 50, 100 or 200 ms.
DO2 : Relay contact, contact capacity 220 V AC/30 V DC, 1 A.
Life ... 200,000 operations (under rated load), replaceable with socket.
When total pulse output is selected (See 4.5.6.1)
1 pulse/day to 1 pulse/s (at full scale flow rate).
Pulse width: 50, 100 or 200 ms.
For actual keying, refer to the typical operation indicated below. Set the parameter protection to OFF beforehand
(Section 4.4.1).
BULLETIN F-70