The Matheson Tri-Gas FM-1000 Flowmeter is a compact, high-accuracy instrument designed for precise gas flow measurement in applications where space is limited. Incorporating the innovative design of the FM-1050 series, the FM-1000 maintains a ±5% full-scale accuracy within its 65mm scale length.
Key Features
- Compact Design: Ideal for installations where space conservation is essential.
- Direct Reading Scale: Provides immediate flow readings for air in both English and Metric units.
- Fluted Flow Tubes: Enhances float stability, ensuring consistent and reliable measurements.
- Tube-Cube® Enclosure: Protects the glass metering tube while offering a magnified scale for easy reading and simplified tube replacement.
- Valve Options:
- Utility (six-turn) valve for standard control and indication.
- High accuracy (fifteen-turn) valve for precise control and repeatability.
- No valve option for applications requiring only flow indication.
Applications
- Flow measurement of purge gases.
- General laboratory or instrument flow monitoring.
- Flow measurement of calibration standards used in environmental monitoring.
Design Features
- Rugged, compact design.
- Precision tapered, fluted metering tube.
- Reflective plastic background and 1.5x magnification lens for excellent readability.
- Safety blow-out back panel.
- Full 10 to 1 (100% to 10% full scale) metering range.
- Low pressure drop for increased flow rates at low feed pressures.
- Easy installation and quick service access.
- Optional utility and high-performance valves do not require special fittings.
- Corrosion-resistant materials: 316 stainless steel with Viton seals.
- Custom scales and flow curves available.
Materials of Construction
- Wetted End Blocks, Fittings, and Internal Parts: 316 stainless steel.
- Seal Materials: Viton.
- Side Plates: Painted aluminum.
- Metering Tube: Borosilicate glass enclosed in Tube-Cube® holder.
- Piping Connections: 316 stainless steel.
- Float Materials: Black glass and 316 stainless steel.
- Scale: Ceramic ink on glass tube, length 65mm.
Specifications
- Accuracy: ±5% of full-scale flow rate.
- Repeatability: 0.25% of scale reading.
- Pressure Rating: 250 psi maximum.
- Temperature Rating: -20°F to 250°F.
- Range: 10 to 1, i.e., 100% to 10% of full scale.
- Scale Readings: Direct reading for air (special other scales available).
- Shipping Weight: 1 lb.
The Matheson Tri-Gas FM-1000 Flowmeter is a reliable and versatile solution for accurate gas flow measurement, suitable for a wide range of industrial and laboratory applications.








