Dwyer UXF3 - Manual (Page 56)

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4.9.6. Setting the low flow rate cutting
Description
z The output can be cut when the flow rate is too small.
z Effective for indication, analog output (4-20mA) and total operation.
Settable range: 0 to 5 [m/s]; 0 to 16.4 [ft/s] in terms of flow velocity.
(Factory set: 0.150 [m 3 /h]; 5.3 [ft /h])
Note 1) As required, set the low flow rate cut because the flow meter may read a
flow rate when the fluid in the piping is moving on account of convection,
etc. even if the valves are closed.
Note 2) The flow rate unit is as selected by "FLOW UNIT" in "MEASURE SETUP".
(See 4.8.2.)
For actual keying, refer to the typical operation indicated below. Set the parameter
protection to OFF beforehand. (See Section 4.4.1.)
Operation
(example) Set the low flow rate cut point to 0.5 [m 3 /h].
Key operation Description Display
ź
Press the key twice to display “OUTPUT SETTING”.
OUTPUT SETTING
ENT
ź
Press the ENT key once to display “ZERO ADJUSTMENT”.
ZERO ADJUSTMENT
SET ZERO
ź
Press the key twice to display “CUT OFF”.
CUT OFF
0.150 m3/h
ENT
ź
Press the ENT key once to blink the cursor.
CUT OFF
0 000.150 m3/h
0000. 1 50 m3/h
0000. 5 50 m3/h
0000.5 5 0 m3/h
ź
Set “0.5” by the key and the key.
CUT OFF
0000.5 0 0 m3/h
Press the ENT key once to register.
CUT OFF
COMPLETE
Ļ
ENT
ź
ź
ź
ź
ʊʊʊ CUT OFF has been registered. ʊʊʊ CUT OFF
0.500 m3/h
ESC Press the ESC key once and then press the key 3 times to enter
the measurement mode.
0.000 m/s
0.000 m3/h
Output
Flow rate
Low flow cut setting value
Bulletin F-107-UXF3
3