OMEGA FTB300 Series Flow Verification Sensor User Guide
- June 6, 2024
- Omega
Table of Contents
FTB300 Series Flow Verification Sensor
User Guide
Introduction
This flowmeter is designed to display flow rate and flow total on a six-digit LCD display. The meter can measure bi-directional flows in either vertical or horizontal mounting orientation. Six flow ranges and four optional pipe and tubing connections are available. Pre-programmed calibration K-factors can be selected for the corresponding flow range or a custom field calibration can be performed for higher accuracy at a specific flow rate. The meter is factory programmed for the correct K-factor of the body size included with the meter.
Features
-
Four connection options available: 1/8″ F /NPT, 1/4″ F /NPT, 1/4″ OD x .170 ID Tubing & 3/8″ OD x 1/4″
ID Tubing sizes. -
Six body size/flow range options available:
30 to 300 ml/min, 100 to 1000 ml/min, 200 to 2000 ml/min,
300 to 3000 ml/min, 500 to 5000 ml/min, 700 to 7000 ml/min. -
3 model display variations:
FS = Sensor mounted display
FP = Panel mounted display (includes 6′ cable)
FV = No display. Sensor only. 5vdc current-sinking output -
6 digit LCD, up to 4 decimal positions.
-
Displays both rates of flow and total accumulated flow.
-
Open collector alarm setpoint.
-
User-selectable or custom programmable K-factor.
Flow units: Gallons, Liters, Ounces, milliliters
Time units: Minutes, Hours, Days -
Volumetric field calibration programming system.
-
Non-volatile programming and accumulated flow memory.
-
The total reset function can be disabled.
-
Opaque PV DF chemical resistant lens.
-
Weather-resistant Valox PBT enclosure. NEMA 4X
Specifications
Max. Working Pressure: 150 psig (10 bar)@ 70°F (21°C)
PVDF lens Max. Fluid Temperature: 200°F (93°C)@ 0 PSI
Full-scale accuracy
Input Power requirement: +/-6%
The sensor only output cable: 3-wire shielded cable, 6ft
Pulse output signal: Digital square wave (2-wire) 25ft max.
Voltage high = 5V de,
Voltage low < .25V de
50% duty cycle
Output frequency range: 4 to 500Hz
Alarm output signal:
NPN Open collector. Active low above
the programmable rate set point.
30V de maximum, 50mA max load.
Active low < .25V de
2K ohm pull-up resistor required.
Enclosure: NEMA type 4X, (IP56)
Approximate shipping wt: 1 lb. (.45 kg)
Temperature and Pressure limits
Maximum Temperature vs. Pressure
Dimensions
Replacement Parts
Installation
Wiring Connections
On sensor-mounted units, the output signal wires must be installed through the
back panel using a second liquid-tite connector (included). To install the
connector, remove the circular knock-out. Trim the edge if required. Install
the extra liquid-tite connector.
On panel or wall-mounted units, wiring may be installed through the enclosure
bottom or through the back panel. See below.
Circuit Board Connections
NOTE: To reset the circuit board: 1) Disconnect power 2) Apply power while pressing the two front panel buttons.
Flow Verification Output Signal
When connected to external equipment such as a PLC, data logger, or metering pump, the pulse output signal can be used as a flow verification signal. When used with metering pumps, connect the positive ( +) terminal on the circuit board to the pump’s yellow signal input wire and the negative (-) terminal to the black input wire.
Panel or wall mounting
Operation
Theory of operation
The flowmeter is designed to measure the flow rate and accumulate the total
volume of a fluid. The unit contains a paddle wheel that has six ( 6) through
holes to allow infrared light to pass through, a light-detecting circuit, and
an LCD-display electronic circuit.
As fluid passes through the meter body, the paddlewheel spins. Each time the
wheel rotates a DC square wave is output from the sensor. There are six ( 6)
complete DC cycles induced for every revolution of the paddlewheel. The
frequency of this signal is proportional to the velocity of the fluid in the
conduit. The generated signal is then sent into the electronic circuit to be
processed.
The meter is factory programmed for the correct K-factor of the body size
included with the meter.
The flowmeter includes the following features:
- Displays either the flow rate or the accumulated total flow.
- Provides a pulse output signal that is proportional to the flow rate.
- Provides an open collector alarm output signal. Active low at flow rates above the user-programmed value.
- Provides user-selectable, factory preset calibration k-factors.
- Provides a field calibration procedure for more precise measurement.
- Front panel programming can be disabled by a circuit board jumper pin.
Control Panel
Enter Button (right arrow)
-
Press and release – Toggle between Rate, Total, and Calibrate screens in the run mode. Select program screens in the program mode.
-
Press and hold 2 seconds – Enter and exit program mode. (Automatic exit program mode after 30 seconds of no inputs).
Clear/Cal (up arrow) -
Press and release – Clear total in the run mode. Scroll through and select options in the program mode.
NOTE: To reset the circuit board: 1) Disconnect power 2) Apply power while pressing the two front panel buttons.
Flow stream requirements
- The flowmeter can measure fluid flow in either direction.
- The meter must be mounted so that the paddle axle is in a horizontal position – up to 10° off the horizontal is acceptable.
- The fluid must be capable of passing infra-red light.
- The fluid must be free of debris. A 150-micron filter is recommended especially when using the smallest body size (Sl), which has a 0.031″ through-hole.
Run mode display
Run mode operation
FLOW RATE DISPLAY – Indicates rate of flow, S1 = body size/range #1, ML =
units displayed in milliliters, MIN = time units in minutes, R = flow rate
displayed.
FLOW TOTAL DISPLAY – Indicates accumulated total flow, S1 = body
size/range #1, ML = units displayed in milliliters, T = total accumulated flow
displayed.
Viewing the K-factor (pulses per unit)
while in the run mode, Press and hold ENTER then press and hold CLEAR to
display the K-factor.
Release ENTER and CLEAR to return to run mode.
Body Size| Flow Range (ml/min)| Pulses per Gallon| Pulses
per Liter
---|---|---|---
1| 30-300| 181,336| 47,909
2| 100-1000| 81,509| 21,535
3| 200-2000| 42,051| 13,752
4| 300-3000| 25,153| 6,646
5| 500-5000| 15,737| 4,157
6| 700-7000| 9,375| 2,477
Useful formulas
60 I K = rate scale factor
rate scale factor x Hz = flow rate in volume per minute
1 / K = total scale factor total scale factor x n pulses = total volume
Programming
The flowmeter uses a K-factor to calculate the flow rate and total. The
K-factor is defined as the number of pulses generated by the paddle per volume
of fluid flow. Each of the six different body sizes have different operating
flow ranges and different K-factors. The meter is factory programmed for the
correct K-factor of the body size included with the meter.
The meter’s rate and total displays can be independently programmed to display
units in milliliters (ML), ounces (OZ), gallons (gal), or liters (LIT). Rate
and total can be displayed in different units of measure. The factory
programming is in milliliters (ML).
The meter’s rate display can be independently programmed to display timebase
units in minutes (Min), Hours (Hr), or Days (Day). The factory programming is
in minutes (Min).
For greater accuracy at a specific flow rate, the meter can be field cali
brated. This procedure will automatically override the factory K-factor with
the number of pulses accumulated during the calibration procedure. The factory
default settings can be re-selected at any time.
Field Calibration
Anybody size/range can be field calibrated. Calibration will take into account your specific application’s fluid properties, such as viscosity and flow rate, and increase the accuracy of the meter in your application. The Body Size/Range must be set for “SO” to enable the calibration mode. Follow the programming instructions on pages 10 & 11 to reset the Body Size/Range and perform the calibration procedure.
Programming for body size/ranges Although S6 –
Press and Hold ENTER to initiate the programming mode.
Field calibration size/range setting
SO
– Continuation of programming sequence when range “SO” is selected.
The meter should be installed as intended in the application.
The amount of fluid that flows through the meter during the calibration
procedure must be measured at the end of the calibration procedure.
Allow the meter to operate normally, in the intended application, for a period
of time. A testing time of at least one minute is recommended. Note – the
maximum number of pulses possible is 52,000. Pulses will accumulate in the
display. After the test time period, Stop the flow through the meter. The
pulse counter will stop.
Determine the amount of fluid that passed through the meter using a graduated
cylinder, scale, or another method. The measured amount must be entered in
calibration screen #4 “MEASURED VALUE INPUT.”
Notes:
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials
and workmanship for a period of 13 months from the 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 the 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, the 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, THE 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:
- Purchase Order number under which the product was PURCHASED,
- Model and serial number of the product under warranty, and
- Repair instructions and/or specific problems relative to the product.
FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:
- Purchase Order number to cover the COST of the repair,
- Model and a serial number of the product, and
- 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 registered trademark of OMEGA ENGINEERING, INC.
©Copyright 2016 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.
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