<h2>Overview</h2>
<p>The <strong>Matheson FM-1000 flowmeter</strong> is a compact rotameter engineered for accurate low-flow gas measurement. This direct-read flowmeter combines proven design features in a space-saving configuration, making it ideal for industrial applications where precision and compact footprint matter. Available in both English and Metric scale units, the FM-1000 serves labs, manufacturing, analytical instruments, and process control systems.</p>
<h2>Key Features</h2>
<ul>
<li>Direct-read scale for air measurement—no reference charts required</li>
<li>Guaranteed ±5% full scale accuracy with 65mm scale length</li>
<li>Fluted float guides ensure optimum float stability and repeatability</li>
<li>Choice of black glass or stainless steel float materials</li>
<li>Tube-Cube® enclosure provides tube protection and magnified scale for easy reading</li>
<li>Simple vertical mount design with fast tube replacement</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Accuracy:</strong> ±5% of full scale</li>
<li><strong>Scale Length:</strong> 65mm (compact design)</li>
<li><strong>Reading Type:</strong> Direct read for air (English or Metric units available)</li>
<li><strong>Float Options:</strong> Black glass or stainless steel</li>
<li><strong>Tube Material:</strong> Glass metering tube with fluted design</li>
<li><strong>Housing:</strong> Tube-Cube® unitized holder</li>
<li><strong>Mounting:</strong> Vertical position required (inlet at bottom)</li>
<li><strong>Maximum Tilt:</strong> ±5° from vertical (affects accuracy beyond this)</li>
</ul>
<h2>Typical Applications</h2>
<p>The Matheson FM-1000 is widely used in:</p>
<ul>
<li>Laboratory gas flow measurement and monitoring</li>
<li>Analytical instruments (chromatography, spectrometry)</li>
<li>Industrial process control and gas delivery systems</li>
<li>Medical and scientific gas supply applications</li>
<li>Manufacturing and quality control inspection</li>
<li>Research and development facilities</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Standard process gas piping (FNPT, NPT inlet/outlet connections available)</li>
<li>Low-pressure gas delivery systems up to rated working pressure</li>
<li>Laboratory and bench-top gas control setups</li>
<li>Panel-mount installations with adapter fittings</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<p>The FM-1000 is a direct successor to earlier compact flowmeter designs. Verify your specific scale range and float material match before ordering a replacement unit. Consult your original equipment documentation or contact Matheson technical support at 1-800-828-4313 for exact cross-reference.</p>
<h3>Works With</h3>
<ul>
<li>Gas correction factor charts for non-air gas measurement</li>
<li>Matheson valve options (utility valve, high-accuracy 15-turn valve, or no-valve configurations)</li>
<li>Standard tube replacement kits and service parts</li>
<li>Inline regulators and pressure gauges for integrated gas control systems</li>
</ul>
