Koganei FA Series, Instruction Manual

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Handling Instructions and Precautions
・ Connecting to a quick fitting
Provide the straight pipe section noted in the table below when connecting the
FA Series Flow Meter to a quick fitting. Connecting without a straight pipe
section can produce a negative reading due to bypass unit back flow, even if
flow in the main channel itself is normal direction flow. Also, the readout may
show an extremely low flow rate instead of the actual flow rate.
Quick fitting
Straight pipe section
Tube
Direction of flow
Pipe, connected
equipment
Fitting type
Connection
location
Straight pipe section for FA Series Flow Meter
Specification range
Note
Within (±3%FS)
Accuracy Note
Within ±5%FS
Quick fitting
Tube size φ 8
(For FAS-002)
Straight
type
Upstream from
flow meter
15D 5D
Downstream
from flow meter Not required
Not required
Elbow type
Upstream from
flow meter
20D 10D
Downstream
from flow meter
5D 5D
Quick fitting
Tube size φ 12
(For FAS-002)
Straight
type
Upstream from
flow meter
5D Not required
Downstream
from flow meter Not required
Not required
Elbow type
Upstream from
flow meter
10D 5D
Downstream
from flow meter
5D 5D
Quick fitting
Tube size φ 12, φ 16
(For FAS-005)
Straight
type
Upstream from
flow meter
10D 5D
Downstream
from flow meter Not required
Not required
Elbow type
Upstream from
flow meter
15D 10D
Downstream
from flow meter
5D 5D
Quick fitting
Tube size φ 12, φ 16
(For FAS-030)
Straight
type
Upstream from
flow meter
10D 8D
Downstream
from flow meter
5D 5D
Elbow type
Upstream from
flow meter
15D 13D
Downstream
from flow meter
10D 10D
Note: Characteristics when the tube is extended straight out from the fitting
about 300 mm.
Wiring
1. Use a power supply that is within the specification range.
2. Wire a cable with connector separately from power lines and high voltage
lines (use a separate conduit). Noise from these lines may cause the
equipment to operate erratically.
3. When connecting a cable with connector, align the core wire and push it in as far
as it will go. Next, tighten the connector nut by hand. When tightening the nut,
be sure to keep it within the prescribed torque (0. 4 to 0. 6N ・ m range). Failure to
do so creates the risk of damage to the FA Series Flow Meter and inability to
maintain the IP65 protective structure, and loosening of the nut due to vibration.
4. Do not pull on the cable with strong force and do not lift the FA Series Flow
Meter by the cable (pull out strength: 40 N or less; bend strength; 20 N or
less). Also, do not subject the cable to repeated bending or pulling force.
5. Do not rotate the center part of the connector (see figure below) while the
connector is inserted fully into the FA Series Flow Meter. Doing so will cause
the FA Series Flow Meter connector to rotate, which can cause internal
wiring to twist and become damaged.
Center part of cable
with connector
Connector nut
6. Always turn off the power supply before doing any wiring.
7. Keep load resistance connected to the instantaneous flow rate output below 300 Ω.
8. Keep cable and connector ends away from moisture when doing wiring.
9. Double-check to make sure that wiring is correct before turning on power.
Wiring error creates the risk of damage and erratic operation.
1
2
3
4
V+ (brown)
I+ (white)
COM (blue)
EV (black)
Instantaneous flow rate
output is 4 to 20 mA
Allowable load
resistance is
300
Ω
max.
22.8 to
25.2VDC
30VDC or less
30VDC, 50 mA
or less
Example of external connection Inner circuits
Load
Load
＋
−
＋
−
● Example connection
key
1
2
3
4
Pin No.
1
2
3
4
Signal name
V+
I+
COM
EV
Description
24VDC
Instantaneous flow rate output (4-20 mA)
COM
Switch output
Pin No.
1
2
3
4
Signal name
V+
I+
COM
EV
Lead color
Brown
White
Blue
Black
Cable wire colors and pin numbers