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Stainless Steel Low Flow Flow Meters and Controllers

Water Flowmeters and Controllers for Low Flow


Item# FLR-1605A

In stock

Lead Time (If not in stock): 9 weeks
Water Flowmeters and Controllers for Low Flow FLR-1605A FLR-1605A
  • Response Time of 20 milliseconds Typical (Meter)
  • Turndown Ratio of 50:1
  • Push Button Tare (with Display)
  • Accuracy of ±2% Full Scale

FLR-1605A Model Options

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Flow Range
Output Signal
Process Connection Type:
Process Connection Size:
Media Type
Wetted Materials
Max Operating Pressure
Max Process Temperature

The OMEGA™ Series 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 flow meter 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 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 RS-232 or the 0-5 Volt 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 , an 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.

Model No.
Water Flow Meter
Model No.
Water Flow Controller
Min ?P = 5 PSIG
Connection Flow Range
FLR-1601A –––– 10-32 Thread 0 to 0.5 sccm
FLR-1602A –––– 10-32 Thread 0 to 1 sccm
FLR-1614A –––– 1/8 FNPT 0 to 2 sccm
FLR-1615A FLV-4615A 1/8 FNPT 0 to 5 sccm
FLR-1603A FLV-4603A 1/8 FNPT 0 to 10 sccm
FLR-1616A FLV-4616A 1/8 FNPT 0 to 20 sccm
FLR-1604A FLV-4604A 1/8 FNPT 1 to 50 sccm
FLR-1617A FLV-4617A 1/8 FNPT 2 to 100 sccm
FLR-1618A FLV-4618A 1/8 FNPT 4 to 200 sccm
FLR-1619A FLV-4619A 1/8 FNPT 0 to 500 sccm
FLR-1620A FLV-4620A 1/4 FNPT 0 to 1 SLPM
FLR-1605A FLV-4605A 1/4 FNPT 0 to 2 SLPM
FLR-1606A FLV-4606A 1/4 FNPT 0 to 5 SLPM
FLR-1607A –––– 1/4 FNPT 0 to 10 SLPM
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Rated 5 out of 5 by from Works well Works as advertised. I use the analog output with LabVIEW.
Date published: 2024-04-30
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Can flow direction be switched

Asked by: Bills47
Thank you for your inquiry. Unfortunately, there is no option for reverse flow.
Answered by: Applications Engineer JJC
Date published: 2023-12-06

Is this suitable for use with diesel fuel?

Asked by: PioneerPete
Thank you for your inquiry! Unfortunately, these units are not suitable for use with diesel fuel. The FLR-1600A and FLV-4600A models are only suitable for use with clean water.
Answered by: Application Engineer JM
Date published: 2022-07-11

Do these meters require a certain upstream and downstream straight length runs? If so, can you provide that information.

Asked by: Anonymous
Thank you for your inquiry. The FLR-1600A series flow meters do not have straight run pipe requirements.
Answered by: AS Engineer
Date published: 2019-12-07

How much does the FLR-1602A weigh?

Asked by: spinozaconatus
Thanks for your question. It should be around 0.8 pounds.
Answered by: ASE HPO
Date published: 2023-03-23
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