Omega FP-5070 Series Flow Sensors
4
Mfr. Part No.
Description
FP-5072-PV
Mini-Flow Sensor, 2 mm insert
FP-5074-PV
Mini-Flow Sensor, 4 mm insert
FP-5076-PV
Mini-Flow Sensor, 6 mm inlet, no insert
8. Ordering Information
Assemble
(counterclockwise)
Disassemble
(clockwise)
Upper body
Lower Body
Assembly
Tabs (3)
FLOW
Inlet port
Outlet port
flow
insert
Rotor
Quad ring seal
7. Replacing The Flow Insert
Sensor range can be modified by changing the flow insert. The
sensor must be removed from service and disassembled prior to
installing the new flow insert. See Specifications (Section 2) for
flow range data.
Flow Insert Replacement Procedure:
1. Depressurize system and remove sensor.
2. Rotate the upper sensor body clockwise until it releases from
the lower half, then lift off.
3. Remove rotor and quad ring seal from lower body.
4.
Push the flow insert outward using a small screwdriver.
5.
Install the new flow insert (small diameter inward) with the
eraser end of a pencil. Apply light pressure until insert seats
against the step in the lower body.
Do not force!
6.
Install rotor into lower body. Spin rotor with finger and check
for free rotation. If rotor hits flow insert, remove rotor and
push insert back until free rotor rotation is established. Use
a rounded object such as a pen or pencil body to adjust flow
insert depth.
7. Install rotor, quad ring, and upper body.
Hand tighten only!
Do not overtighten upper body or the lower body assembly
tabs will break.
8. Reprogram instrument with new K-Factor, see Calibration
(Section 5).
CAUTION!
Do not use tools of any kind on the sensor body or port
connections. Hand tighten only! Excessive force will
damage sensor.
Condition
Recommendation
Erratic or missing
sensor signal
A. Verify ALL cable and instrument connections (section 4).
B. Verify proper sensor installation (section 3).
C. Remove power from instrument and disconnect sensor inputs. Apply power to the instrument and
check across Black and Shield terminals with a digital voltmeter for 5 VDC. If 5 VDC is not present, the
instrument requires service or may be misconfigured.
D.
Verify the FP-5072 paddlewheel spins freely by blowing into the flow chamber. If the paddlewheel does
not spin freely, the following conditions may exist:
• The sensor may be dirtty or clogged. Disassemble and clean with hot tap water and a soft brush (see
section 7).
•
The rotor may be hitting the flow insert. Disassemble and adjust flow insert depth (see section 7).
E.
Test sensor with flow system active and sensor powered. Use an oscilloscope to check the sensor input
signal across the Red (Signal IN) and Shield terminals. A square wave signal should appear at these
terminals. If no signal is present, replace sensor.
Perform steps A - E.
If sensor problems
persist, contact
OMEGA.
