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Gas Mass Flow Meters for Clean Gases with Optional Integral Display

Economical Gas Mass Flow Meters for Clean Gases with Optional Integral Display

$1,327.49

Item# FMA1812A-ST

In stock

Lead Time (If not in stock): 6 weeks
Economical Gas Mass Flow Meters for Clean Gases with Optional Integral Display FMA1812A-ST FMA1812A-ST
  • Reads Gas Mass Flow Without Temperature or Pressure Compensation
  • Available in Economical Aluminum or Corrosion- Resistant 316 SS
  • Tiltable LCD Display for Easy Reading
  • NIST Traceable Calibration Included

FMA1812A-ST Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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


The FMA1700A/1800A Series eletronic gas mass flow meters allow users to monitor the flow of a wide variety of gases from 10 SCCM up to 1000 SLM. Utilizing heat transfer through a heated tube to measure molecular gas flow rate, the FMA1700A/1800A provides measurement of direct gas mass flow rate, without the need to compensate for variations in gas temperature or pressure (within stated limits). They are available in an economical aluminum/brass construction for typical gas flows and a 316 SS construction for applications requiring more corrosion resistance. The FMA1700A series without integral display is supplied with a field selectable analog 0 to 5 Vdc or 4 to 20 mA output for remote monitoring; the FMA1800A series has both an integral 3½ digit display and analog output. The display is tiltable over 90 degrees for viewing convenience. The display is calibrated standard to readout directly in SCCM or SLM for nitrogen (other gas calibrations available on special order). Due to their low cost, digital display, analog output capability, and insensitivity to variations in gas temperature and pressure, the FMA1700A/1800A Series are ideal substitutes for many Variable Area Flow Meter applications. When used with the FMA178BP portable battery pack, the FMA1800A Series are ideal for in-the-field calibration of flow meters or testing of air sampling equipment. The FMA178BP battery pack includes batteries, recharger, and carrying case with shoulder strap and belt loop. With the FMA178BP, the flow meter can operate in excess of 40 hours; the batteries can be recharged at least 200 times. The FMA1700A/1800A Series require 12 to 26 Vdc power @ 200 mA maximum, which can be supplied by the FMA178PW plug-in socket power supply. The electronics are reverse polarity protected and has externally accessible fusing. Model number FMA178C (supplied separately) provides a mating 9-pin “D” connector with 3 feet of ribbon cable for accessing the 0 to 5 Vdc output signal and power input connections (use FMA178C-MA for 4 to 20 mA output signal connection). The LCD supplied with the FMA1800A Series is connected to the lower electronics via a modular plug. The LCD can be remotely located by purchasing an FMA18RC remote cable assembly you must then build your own assembly for panel mounting the LCD.

SPECIFICATIONS
Accuracy: ±1% of full scale, including linearity over 15 to 25°C and 5 to 60 psia (0.35 to 4.2 kg/cm²)(For sizes up to 100SLM), ±1.5% of full scale, including linearity over 15 to 25°C and 5 to 60 psia (0.35 to 4.2 kg/cm²)For larger sizes)
Turn-Down Ratio: 100:1
Repeatability: ±0.5% of full scale and for units ≥100 scm from 0 to 20% of range
Temperature Coefficient: 0.15% of full scale per °C or better
Pressure Coefficient: 0.01% of full scale per psi (0.07 bar)
Response Time: 800 msec time constant; 2 seconds (typical) to within ±2% of set flow rate over 25 to 100% of full scale
Power Requirements:12 to 26 Vdc power @200 mA maximum
Maximum Gas Pressure: 1000 psig (70 kg/cm² gauge) for ranges upto 100 SLM; 500 psig (35 kg/cm² gauge)Above 100 SLM; 20 psig optimum
Gas and Ambient Temperature: 0 to 50°C (0 to 122°F)
Leak Integrity: 1 x 10-9; std cc/sec of helium maximum to outside environment
Materials in Fluid Contact:
    Aluminum models: Anodized aluminum, 316 SS, brass and FKM O-rings
    Stainless Steel models: 316 SS and FKM O-rings
Output Signal
    Linear 0 to 5 Vdc: 1000 Ω minimum load
    4 to 20 mA: 50 to 250 Ω loop resistance
Transducer Power: 12 to 26 Vdc @ 200 mA maximum (FMA178PW)
Shipping Weight: 1.1 kg (2.5 lb)
Compliance: EN55011 class 1, class B; EN50082-1
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Rated 4 out of 5 by from Sr. Engr. Tech. Always happy with the Omega flow meters. Will keep buying this product.
Date published: 2017-04-05
Rated 2 out of 5 by from Poor performance Generally unsatisfied with the quality and reliability of this product. For research grade purposes, save your money or go for more reliable and more expensive models.
Date published: 2017-08-18
Rated 5 out of 5 by from Typical Omega works perfectly. Warms up quickly, and gives quick enough feedback for our needs.
Date published: 2023-09-14
Rated 5 out of 5 by from Easy purchase always an easy way to purchased and choose rhe correct flow meter
Date published: 2023-08-25
Rated 5 out of 5 by from Gas Flow Meter This flow meter was well packaged, was easy to setup and worked as advertised. Would reccomend this FM to anyone looking for a precise mass flow measurement. Just make sure you only use it with dry air!
Date published: 2023-08-07
Rated 5 out of 5 by from Nice It works great, easy to set up and use as well. Would buy again
Date published: 2023-04-02
Rated 4 out of 5 by from Mass flow meter Well worth the price, works as well as units much more expensive. Will have to see how it does in the duration department.
Date published: 2021-12-22
Rated 4 out of 5 by from good piece of equipment good product that was easy to setup and capture the data off of it. Plus the display was really helpful.
Date published: 2021-04-21
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For the 1700a/1800a series, is there a accessory to get a digital output for a pilot light green (by select window range to on the digital output)?

Asked by: mred
Yes. Review FMI module link below. https://br.omega.com/omegaFiles/green/pdf/FMI-100.pdf
Answered by: ASE HPO
Date published: 2020-06-09

What gas are these calibrated for? I'm looking for one specific to administering CO2 into our system.

Asked by: pendulum
Thank you for your inquiry about the mass flow meters. Factory default the mass flow meters are calibrated for N2 gas and can be calibrated for specific gases such as CO2. Please compose an email to request a quote to flow@omega.com for the calibrated gas.
Answered by: Application Engineer JC
Date published: 2023-03-31

What is the country of origin for Omega Flowmeter Model FMA 1824?

Asked by: carolb
Thank you for your inquiry. The Country of Origin for this mass flow meter is USA
Answered by: JC ENGR
Date published: 2020-11-17

Does the FMA1804A come with a standard power supply or does that need to be purchased separately?

Asked by: Anonymous
Hi and thanks for connecting with Omega. The FMA1800A Series comes complete with compression fittings, operator’s manual, and NIST certificate. Power supplies sold separately. The FMA178PW is the recommended power supply per the data sheet on the product page.
Answered by: Jane
Date published: 2019-06-13

Hi, I have FMA1814A with the digital display. The first question is what is the unit shown on the display? The second question is that even though the device can measure flow rate from 0 to 1000ml/min, is the maximum number the display can show 620?

Asked by: DH88
Thank you for your inquiry. The maximum flow rate is 1 LPM and will display in Liters per minute if below 1, it will represent as 0.620 LPM. It will display up to 3 decimal places when below 1 LPM.
Answered by: Application Engineer JC
Date published: 2023-10-13

We are purchasing 2 FMA-1723A. This information should be in the manual. I assume there is a hole pattern in the bottom for mounting the gauge. What is the pattern and hole size?

Asked by: DB13
Thank you for your inquiry. Please see email as to the response of your question.
Answered by: Applications Engineer JJC
Date published: 2024-02-27

What class and division is this product, and are they weatherproof?

Asked by: amuld
Thank you for your inquiry about the flow meter. Unfortunately, this series is not rated for hazardous applications.
Answered by: Application Engineer JC
Date published: 2023-01-27

can you provide solid works model of FM1808A ?

Asked by: javal
Thank you for your inquiry about the mass flow meter. Unfortunately, Omega does not provide CAD or STEP files for their products. There are general dimensions located in the manual for this series.
Answered by: Application Engineer JC
Date published: 2023-01-27

Hello, can these meters be programmable to cause a change in gas flow over certain periods of time with Arduino?

Asked by: Elver
Thank you for your inquiry for the mass flow meters. Unfortunately, there is not switch settings to have the mass flow meter be changed to allow for overflow.
Answered by: Application Engineer JC
Date published: 2021-09-27

Can the compression fittings provided be removed without damaging the flow meter or impacting how it measures flow rates? I need to use the 1-10 sccm flowmeter with 1/16 in OD tubing, and would rather change these fittings.

Asked by: rokelly
Thank you for your inquiry. You may only change the outlet fitting of these flow meters. The inlet side has a reference element, if remove, will void the calibration.
Answered by: JC ENGR
Date published: 2020-12-08

can this read over 1000 SCCM?( not SLM)

Asked by: Chim
Thank you for your inquiry. The FMA1814A mass flow meter can read up to 1,000 sccm.
Answered by: Application Engineer JC
Date published: 2023-02-17

FMA1842A-ST Would this unit be able to test a vacuum? Assuming no (0-1000SCCM), could I apply negative pressure on the outlet and receive an accurate (albeit net positive) flow reading? Any unit that can read forward AND reverse flow?

Asked by: Matt Day
Yes, you can test a vacuum using this flowmeter.
Answered by: AEHPO
Date published: 2024-03-28

What filter rating would you recommend to have before this mass flow meter to eliminate failure risk and increase service life?

Asked by: jppt1982
Thank you for your inquiry for the mass flow controllers. Omega recommends that the gas being controlled is clean and dry and in the event there is some suspended particles in the stream, then, a 50 micron mesh filter will suffice.
Answered by: Application Engineer JC
Date published: 2022-03-22
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