Page 1
TM
NORWALK, CT
User’s Guide
Shop online at
omega.com
e-mail: [email protected]
For latest product manuals:
www.omegamanual.info
FLSC-45/45B
Paddlewheel Signal Conditioner
Page 2
omega.com [email protected]
Servicing North America:
U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: (203) 359-1660 Fax: (203) 359-7700
e-mail: [email protected]
For Other Locations Visit omega.com/worldwide
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.
Page 3
General Description
The FLSC-45 or FLSC-45B Flow Signal Conditioner is a DC-powered sinusoidal
frequency input to a 4 to 20 mA or 1 to 5 Vdc field selectable output signal conditioner.
Either model is capable of directly accepting magnetic pickup inputs such as
paddlewheel sensors and turbine meters without amplification, and provides a
scaled analog output signal that is compatible with most flow measuring systems and
data acquisition computer boards. The input circuitry of the signal conditioner has
been designed to condition the low level sinusoidal output from turbine meters and
paddlewheel sensors, while rejecting any unwanted noise on the input line. A signal
threshold adjustment is provided which allows the user to set the input sensitivity above
the ambient noise level, eliminating any false signal on the output.
The output signal is a DC current (4-20 mA) or DC voltage (1-5 Vdc) output which is
proportional to flow rate. The unit is powered by a user supplied, filtered DC voltage
power supply.
A zero and span potentiometer and range select DIP switch allow easy bench calibration
or field adjustment of the analog output from the signal conditioner.
Unpacking
Remove the Packing List and verify that you have received all equipment. If you have
any questions about the shipment, please call the Customer Service Department at
When you receive the shipment, inspect the container and equipment for any signs
of damage. Note any evidence of rough handling in transit. Immediately report any
damage to the shipping agent.
FLSC-45/45B Paddlewheel Signal Conditioner
NOTE:
The carrier will not honor any claims unless all shipping material is saved for their examination. After
examining and removing contents, save packing material in the event reshipment is necessary.
The following items am supplied in the box:
• FLSC-45 or FLSC-45B Signal Conditioner
• Mounting Plate (attached) FLSC-45 only
• User’s Guide
1
Page 4
FLSC-45/45B Paddlewheel Signal Conditioner
CES)
Mounting - FLSC-45
The FLSC-45 can be mounted using the metal mounting plate attached to the unit. Refer
to Figure 1 for mounting dimensions. Note that if needed, Velcro or double-sided tape
can be used to secure the transmitter in place.
79.38
(3.125)
68.58
(2.700)
25.4
(1.00)
3.18 (0.125) TYP.
MOUNTING HOLES
60.96
(2.400)
Mounting - FLSC-45B
The FLSC-45B is mounted by using the internal mounting holes located inside
the aluminum enclosure with the lid removed. Refer to figure below for
mounting dimensions.
35
C
L
(1.38)
17.5
(.69)
42.04
(1.655)
63.50
(2.500)
Figure 1A. - FLSC-45 Mounting Dimensions, mm (inches)
115.3
(4.54)
C
L
MOUNTING HOLE (2 PLA
FOR #6 SCREW/BOLT
65.3
(2.57)
51.3
(2.02)
102.6
(4.04)
Figure 1B. - FLSC-45B Mounting Dimensions, mm (inches)
2
Page 5
Wiring
Sensor Wire FLSC-45 FLSC-45B
Model Color Terminal
Connection
FP-5300 Red 1 5
FP-5301 Black 2 6
FP-5302
FTB100 Series Black 1 5
FTB200 Series White 2 6
FTB400 Series
FP-5200 Red 1 5
FP-5201 Black 2 6
FP-5202
FTB-800 Series Blue 1 5
Clear 2 6
FP6000 Red 1 5
Black 2 6
FP5100 Red 1 5
FP5101 Black 2 6
FP51
FP-8500 Red 1 5
FP-8501 Black 2 6
FP-8502
FLSC-45/45B Paddlewheel Signal Conditioner
SENSOR INPUT
~
POWER
+
SUPPLY
24 Vdc
132456
+
4.00 MA
MILLIAMP METER
SENSOR INPUT
~
POWER
+
+
VOLT METER
SUPPLY
24 Vdc
1.0 V
321654
–
–
–
–
Figure 2. Input Connections to
OMEGA
TM
Sensors
The low voltage lines from the magnetic pickup should be shielded and kept less than ten feet and
isolated from relays, solenoids, or other sources of electrical noise. Let the output from the transmitter
make the long run.
For FLSC-45 units purchased recently a new surface mount board has been used and the
wiring has been changed, See figure 3C for the new wiring scheme.
Figure 3A. FLSC-45 Wiring Figure 3B. FLSC-45B Wiring
NOTE:
3
Page 6
FLSC-45/45B Paddlewheel Signal Conditioner
+
POWER
SUPPLY
24 Vdc
–
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Figure 3C. New FLSC-45 Wiring
Signal Threshold Adjustment (SENS)
During calibration and installation, the signal threshold adjustment (refer to Figure 5),
should be set to the full (CW) position. This adjustment should only be changed if there
is a high noise level on the input, which is causing a false output reading with no flow.
Slowly adjust the pot marked “SENS” CCW until the output returns to a zero reading
with no flow or input. Note: The transmitter will not operate with the SENS pot in the
full CCW position.
+
SENSOR INPUT
~
+
~
MA
4.00
MILLIAMP METER
POWER
SUPPLY
+
24 Vdc
VOLT METER
1.00
SENSOR INPUT
–
–
–
V
Figure 4A. FLSC-45 Side View Figure 4B. FLSC-45B
Calibration - FLSC-45
Equipment Required
1. 12-32 Vdc power supply (24 Vdc nominal)
2. Sinusoidal Frequency Generator
3. Milliamp/Voltmeter
4. Small common screwdriver (jeweler’s)
5. Small Phillips screwdriver
4
THRESHOLD ADJUSTMENT
(SENS ADJUST)
P3
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Calibration Procedure - FLSC-45
1. Remove bottom cover of FLSC-45 to access calibration compartment (see Figure 5B).
2. Connect the power supply, milliamp meter and the frequency generator to signal
conditioner as shown in Figure 5A for 4-20 mA or 1-5 Vdc calibration.
3. Determine the maximum volumetric flow rate in GPM, expected by the application.
Name this “GPM (Max)”.
4. From the calibration constant (or K-Factor) listed on the data sheet for the flow sensor,
obtain the frequency corresponding to GPM (Max) using Equation #1 and designate
this frequency F (Max).
Equation #1 F (Max) = K-Factor x GPM (Max).
60
FLSC-45/45B Paddlewheel Signal Conditioner
DIP SWITCH SETTINGS
65-120 Hz
121-240 Hz
241-480 Hz
481-960 Hz
961-1920 Hz
1921-3840 Hz
3840-7680 Hz
12345678
DIP SWITCH SETTINGS
65-120 Hz
121-240 Hz
241-480 Hz
481-960 Hz
961-1920 Hz
1921-3840 Hz
12345678
3840-7680 Hz
Figure 5A. FLSC-45 Calibration Setup
12345678
1 2345678
POWER
+
SUPPLY
+
4.00
MILLIAMP METER
POWER
+
SUPPLY
VOLT METER
+
24 Vdc
24 Vdc
1.00
–
–
MA
SINUSOIDAL
FUNCTION
GENERATOR
–
–
V
SINUSOIDAL
FUNCTION
GENERATOR
Figure 5B. New FLSC-45 Calibration Setup
5
Page 8
FLSC-45/45B Paddlewheel Signal Conditioner
5. Set the frequency generator for an output of 0 Hz. Adjust the zero potentiometer (Pl)
for an output of 4.00 mA or 1.00 Vdc.
6. Set the coarse range adjustment by selecting a switch position on the DIP switch inside
the calibration compartment. Set the correct switch position so that the F (Max) falls
within the range you select. Refer to Figure 5A for ranges and DIP switch location.
7. Set the frequency generator an output equal to F (Max) and adjust the span
potentiometer (P2) for an output of 20.00 mA or 5.00 Vdc.
8. Reinstall top cover of FLSC-45. Calibration is complete.
Calibration - FLSC-45B
Equipment Required
1. 12-32 Vdc power supply (24 Vdc nominal)
2. Sinusoidal Frequency Generator
3. Milliamp/Voltmeter
4. Small common screwdriver (jeweler’s)
5. Small Phillips screwdriver
Calibration Procedure - FLSC-45B
1. Remove top cover of FLSC-45B to access calibration compartment (see Figure 5C).
2. Connect the power supply, milliamp meter and the frequency generator to signal
conditioner as shown in Figure 5B for 4-20 mA or 1-5 Vdc calibration.
3. Determine the maximum volumetric flow rate in GPM, expected by the application.
Name this “GPM (Max)”.
4. From the calibration constant (or K-Factor) listed on the data sheet for the flow sensor,
MILLIAMP METER
MA
POWER
SUPPLY
24 Vdc
+
–
–
FUNCTION
GENERATOR
COURSE SPAN
DIP SWITCH
P2
P1
1
2
3
4
5
6
7
SPAN
ZERO
3841-7680 Hz
1921-3840 Hz
961-1920 Hz
481-960 Hz
241-480 Hz
121-240 Hz
65-120 Hz
DIP SWITCH
SETTINGS
4.00
+
123456
THRESHOLD ADJUSTMENT
(SENS ADJUST)
P3
Figure 5C. FLSC-45B Calibration Setup
5. Set the frequency generator for an output of 0 Hz. Adjust the zero potentiometer (Pl)
for an output of 4.00 mA or 1.00 Vdc.
6. Set the coarse range adjustment by selecting a switch position on the DIP switch inside
the calibration compartment. Set the correct switch position so that the F (Max) falls
within the range you select. Refer to Figure 5B for ranges and DIP switch location.
7. Set the frequency generator an output equal to F (Max) and adjust the span
potentiometer (P2) for an output of 20.00 mA or 5.00 Vdc.
8. Reinstall top cover of FLSC-45B. Calibration is complete
6
Page 9
Troubleshooting
In case of an inoperable or malfunctioning system, the following procedures can be
used to isolate the faulty wiring, printed circuit boards and/or alternate causes. Factory
consultation is available to assist in diagnosing problems. Please note that in some cases
factory repair can be performed more easily than can be accomplished in the field.
Failure conditions are listed and the possible corrective actions given to eliminate the
observed problem.
Proper operation of the FLSC-45 can be assumed when with power applied to the
unit, the analog output produces a current output signal of 4-20 mA with a span
corresponding to that established by the calibration procedure.
OBSERVED CONDITION CORRECTIVE ACTION
A. Analog output with 1. Noise on input. Slowly turn SENS pot CCW (refer to
no input Figure 4) until false indication stops. NOTE:
In fully CCW position, the unit will not operate.
2. Defective FLSC-45. Repair or replace.
B. Incorrect zero reading 1. Verify that power supply voltage is sufficient for the
with no flow required load resistance.
FLSC-45/45B Paddlewheel Signal Conditioner
2. Unit is out of calibration. Recalibrate.
3. Defective FLSC-45. Repair or replace.
OBSERVED CONDITION CORRECTIVE ACTION
C. Current exceeds 1. Flowmeter being used beyond calibrated span of
desired span FLSC-45.
2. Calibration of FLSC-45 incorrect. Recalibrate.
3. Defective unit. Repair or replace.
D. No current output at all 1 . Power supply is reversed. Check wiring as per wiring
installation.
2. Short on flowmeter coil or shield. Replace coil and
check wiring.
3. Defective unit. Repair or replace.
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Page 10
FLSC-45/45B Paddlewheel Signal Conditioner
Specifications
Accuracy: ±0.1% of full scale ±200 ppm/°C
Repeatability: ±0.025%
Input: Sinusoidal 20 mV p-p min. to 50 V p-p max. (65-7680 Hz)
Response Time: 2 seconds fixed
Output: DC Current (4-20 mA) or DC voltage (1-5 Vdc)
Min. Input Frequency to achieve
20 mA or 5 Vdc Output: 65 Hz
Max. Input Frequency to achieve
20 mA or 5 Vdc Output: 7680 Hz
Power
FLSB-45: 8-32 Vdc for 4-20 mA, 15-32 for 1-5 Vdc @ 20 mA
FLSB-45B: 8-24 Vdc for 4-20 mA, 15-24 for 1-5 Vdc @ 20 mA
Max. Loop Resistance: (V
Operating Temperature: -10°C to 60°C
Storage Temperature: -20°C to 65°C
Dimensions
FLSC-45: 61 H x 104 W x 25.4 mm D (2.4 x 4.1 x 1")
FLSC-45B: 65 H x 116 W x 32 mm D (2.6 x 4.6 x 1.3")
Weight
FLSC-45: 96 g (3.3 oz)
FLSC-45B: 300 g (0.3 lbs)
supply
- 8V)/0.020 A = ohms
8
Page 11
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace
period to the normal one (1) year product warranty to cover handling and shipping time. This ensures
that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
FOR WARRANTY RETURNS, please have the
following information available BEFORE contacting
OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.
OMEGA is a trademark of OMEGA ENGINEERING, INC.
© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
written consent of OMEGA ENGINEERING, INC.
FOR NON-WARRANTY REPAIRS, consult
OMEGA for current repair charges. Have
the following information available BEFORE
contacting OMEGA:
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product, and
3. Repair instructions and/or specific problems
relative to the product.
Page 12
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Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
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