Omega Products FLR-1601A User Manual

WATER FLOWMETER AND CONTROLLER

FLV-4604A
shown smaller

FLR-1616A
shown smaller
than actual size.

than actual size.

FLR-1600A Series
FLV-4600A Series

Standard

U Response Time

Up to 20 ms

U Turndown Ratio of 50:1
U Pushbutton Tare

(with Display)

U ±2% FS Accuracy
U NIST Traceability

The OMEGA® FLR-1600A and
FLV-4600A Series flowmeters
and controllers use two of the
best studied physical properties of
liquids to measure flow: pressure
and viscosity. Differential pressure
measurement, across a laminar
flow element, results in a flowmeter
that is inherently linear.

OMEGA flow meters measure
differential pressure within that
laminar region to achieve a
turndown of 50:1 typical and the
accuracy is ±2.0% of full scale.
It uses the same technology as
the laminar gas mass flow and
volumetric flow meters, FMA-1600A
and FLV-1600A. There are no
moving parts to wear out.

The FLR-1600A Series is a
volumetric water flowmeter. The
unique method of flow detection
allows the meter to measure
extremely low flow rates at an
affordable price. The FLR-1600A
Series was designed with deionized
water in mind. These flowmeters
are available in ranges of
500 microliters per minute full scale
to 10 liters per minute full scale.

The FLR-1600A water meter
provides data on the flow rate
and temperature via the standard
local display and the RS232 serial
output. An optional gauge pressure
sensor is available on the
secondary output model “-P”.

The FLV-4600A Series water flow
controller utilizes a proportional
valve coupled to a flowmeter body
creating a unique in-situ closed-loop

F-95

flow controller system.
Measurements are taken within the
laminar region of the flow meter
and the integral PID controller
positions the valve according to
the flow set points. The controllers
can accept an RS232 or the 0 to
5V control input signal depending
on what is preferred. Independent
of the set point voltages, the
controllers can be configured for
single or dual output of the same or
different voltages and/or different
parameters such as temperature
and flow. This is possible because
of our laminar flowmeter design that
incorporates solid-state differential
and temperature sensors on the
standard model to determine flow
in an inherently linear system. An
optional, absolute gauge pressure
sensor is available on the “-P”
secondary output models. The
result is a fast responding linear
flow meter with multiple outputs.
All these parameters are
simultaneously visible with our
dynamic display that includes a
push button operator interface.
water flow controllers are available
from 50 milliliters per minute full
scale to 500 milliliters per minute
full scale.

SPECIFICATIONS

Accuracy: ±2% FS
Repeatability: ±2% FS
Turndown Ratio: 50:1
Response Time:

FLR-1600A: 20 ms
FLV-4600A: 100 ms

Input Control Signal
(FLV-4600A Units):

0 to 5 Vdc and RS232

Output Signal: 0 to 5 Vdc, RS232
Optional Input/Outputs:

4 to 20 mA, 0 to 10 Vdc
Operating Temperature:
10 to 50°C (50 to 122°F)

Zero Shift: 0.02%/ATM FS/°C
Span Shift: 0.02%/ATM FS/°C

Excess Flow Rate:

Approx 28% overage

Maximum Pressure: 100 psig
Minimum Pressure Drop: 0.4 psid
Supply Current (Typical):

FLR-1600A: 30 mA
FLV-4600A: 250 mA

Supply Voltage:
FLR-1600A: 7 to 30 Vdc,
FLV-4600A: 12 to 30 Vdc,

Note: 15 Vdc minimum for 4 to 20 mA
output option.

Electrical Connections:
8-pin circular mini DIN
Wetted Materials: 303, 302 and
316 SS, FKM, polythermide, silicone
glass, silicone rubber; controllers also
have 430 FR, 416 SS, nickel,
brass and polyoxymethylene

Dimensions: mm (inch)

Flow Range
(Full Scale) Height Length Depth

FLR-1600A

0.5 to 1 SCCM 112 (4.4) 60 (2.4) 27 (1.05)
2 to 500 SCCM 116 (4.6) 60 (2.4) 27 (1.05)
1 SLPM 116 (4.6) 60 (2.4) 27 (1.05)
2 SLPM 119 (4.7) 67 (2.6) 27 (1.05)
5 to 10 SLPM 129 (5.1) 102 (4.0) 41 (1.6)
FLV-4600A
0 to 1 SCCM 112 (4.4) 85 (3.3) 27 (1.05)
5 to 500 SCCM 116 (4.6) 91 (3.6) 27 (1.05)
1 to 5 SLPM 145 (5.7) 194 (7.7) 57 (2.3)

Please allow approximately 44.5 mm (1.75") on top of unit for electrical
cable connection.

Differential
Pressure Sensor

Temperature
Sensor

Optional Gauge
Pressure Sensor

0.035

0.250

A

A

FLV-4604A shown

smaller than actual size.

F

Differential
Pressure Sensor

Temperature
Sensor

Exploded View of Internal

Laminar Flow Elements

Exploded View of Optional

12P or V2P Laminar Elements

F-96