FMA1600-Series

Supported Applications

The Omega FMA-1600 Series consists of Mass and Volumetric Flow Meters designed for clean gases. These instruments measure mass flow rate, volumetric flow rate, gas absolute pressure, and gas temperature using a laminar flow element (LFE) to force gas into laminar flow. The series supports applications requiring simultaneous display of multiple parameters without straight pipe runs or warm-up time.

Documented media compatibility includes clean gases with over 130 standard gas calibrations available, including custom live gas blend programming and storage for up to 20 user-defined gas blends.

Operating Conditions & Performance

The series offers measurement ranges from 0.5 SCCM to 3000 SLM (0 to 1000 SLPM through 0 to 100,000 SLPM in specific configurations). Accuracy is specified as ±(0.8% of rdg + 0.2% FS) per the data sheet specifications table, with a repeatability of ±0.2%. The typical default response time is <10 ms for 63.2% of a step change and is field adjustable via RS232.

Operating conditions include an ambient temperature range of -10 to 50°C (14 to 122°F). Maximum pressure rating is listed as 145 psig, with standard output scaled in SCFM or SLPM. The meters provide a turndown ratio of 200:1 and feature NIST Standard certification.

Key Performance Specifications

• Measurement Range: 0 to 0.5 SCCM through 0 to 3000 SLM (varies by model)
• Accuracy: ±(0.8% of rdg + 0.2% FS)
• Repeatability: ±0.2%
• Response Time: <10 ms typical (field adjustable via RS232)
• Ambient Temperature: -10 to 50°C (14 to 122°F)
• Maximum Pressure: 145 psig
• Turndown Ratio: 200:1

Configuration Options

The FMA-1600 Series is configurable across multiple dimensions including flow range, output signal type, process connection size, and special service options. The series supports standard voltage outputs (0 to 5 Vdc), optional current loops (4 to 20 mA), digital communication via RS232 or RS485, and dual-output configurations.

Output Signal Options

• Standard: 0 to 5 Vdc output signal; RS232 standard
• Optional Current Output: 4 to 20 mA (add suffix -I)
• Dual Outputs: Two 4 to 20 mA outputs (-I2) or two 0 to 5 V outputs (-V2)
• Volumetric Flow Standard Output: Add suffix -VOL
• Alternate Scales: Temperature (-T) or Pressure (-P) on secondary output; SCFH units (-SCFH)
• Digital Communication: RS485 optional (add suffix -RS485); 4 to 20 mA input available (-IN)

Housing and Connection Options

• Process Connections: Female inlet/outlet ports including 10-32 thread, 1/8 FNPT, 1/4 FNPT, 1/2 FNPT, 3/4 FNPT, and 1 1/4 FNPT
• Portable Version: Integral battery with up to 18-hour charge (add suffix -B); not available on models with 4-20 mA output (-I or -I2)
• Totalizer Option: Add suffix -TOT; specifies resolution for a 6-digit counter
• Power Supply: 7 to 30 Vdc (15 to 30 Vdc required for 4-20 mA output); Universal 100 to 240 Vac to 24 Vdc adaptor available (FMA1600-PSU)

Accessories and Cables

• Cables: Replacement or extension cables with 8-pin male mini DIN connectors in single-ended, double-ended, right-angle, or DB9 female adaptor configurations (1.8 m / 6' or 7.6 m / 25')
• Multi-Drop Box: FMA1600-MDB accessory

Key Product Differences

The series includes distinct model families based on flow range and connection size. Models are designated by a base number (e.g., FMA-1601A through FMA-1623A) corresponding to specific maximum flows from 0.5 SCCM up to 3000 SLM.

Physical dimensions vary with flow range: smaller units (0.5 to 50 SCCM) measure approximately 98.98 mm x 60.33 mm x 26.67 mm, while larger models (up to 1500 SLM) reach heights of 126.16 mm and lengths of 101.60 mm with depths up to 40.64 mm.

Specialized variants include the FMA-LP1600A for low pressure drop applications, the FMA-1600A-LSS for aggressive gases (referenced in manual documentation), and portable versions denoted by the -B suffix which integrate battery power. The standard output is 0 to 5 Vdc; models requiring current loop or dual outputs utilize specific suffixes (-I, -V2) as defined in the ordering guide.