Overview
The Matheson FM-1000 flow meter (Part No. MJ14G101J803) is a compact rotameter-style flowmeter designed for precise gas flow measurement across industrial applications. This Matheson FM-1000 combines the innovative design of the FM-1050 series in a space-saving format without sacrificing measurement accuracy. Direct-read capability and the integrated Tube-Cube® enclosure make it ideal for laboratories, medical gas systems, semiconductor manufacturing, and general industrial gas delivery.
Key Features
- Tube-Cube® design: Glass metering tube enclosed in protective, magnified scale holder for easy reading and quick float replacement
- Direct-read air measurement: Factory-calibrated for air with option for other gases upon request
- ±5% full-scale accuracy: Guaranteed accuracy across the 65mm scale length for repeatable measurements
- Fluted float guides: Integral fluted design ensures stable float performance and measurement reliability
- Compact footprint: Space-efficient rotameter ideal for tight installations and bench-top applications
- Float options: Available with black glass or stainless steel float depending on application requirements
Technical Specifications
| Model | FM-1000 |
| Part Number | MJ14G101J803 |
| Manufacturer | Matheson Tri-Gas, Inc. |
| Measurement Type | Rotameter (Direct-Read) |
| Accuracy | ±5% full scale |
| Scale Length | 65mm |
| Enclosure Type | Tube-Cube® (magnified glass tube holder) |
| Float Options | Black glass or stainless steel |
| Default Gas Calibration | Air (other gases available on request) |
| Scale Display | Direct reading; English or Metric units available |
Typical Applications
- Laboratory and bench-top gas flow measurement
- Medical and dental gas delivery systems
- Semiconductor manufacturing gas metering
- Welding and cutting gas control
- Industrial process gas monitoring
- Research and development fluid flow testing
Compatibility & Replacements
Compatible With
- Matheson Tri-Gas accessory packages and custom scaling
- Standard 1/4″ and 3/8″ NPT port connections (verify with part number for specific configuration)
- Laboratory air supply systems and compressed gas cylinders
- Industrial gas delivery networks requiring direct-read metering
Replaces / Drop-In Replacement For
- Earlier FM-1000 Series configurations with different calibrations or float types
- Other compact rotameter-style flowmeters requiring equivalent accuracy and footprint (verify dimensional compatibility)
Works With
- Matheson gas regulators and pressure control equipment
- Standard compressed gas cylinder manifolds
- Laboratory benchtop gas distribution systems
- Any direct-read float-type measurement compatible with rotameter technology
