Aalborg Instruments PMR1-017393 Variable Area Flowmeter Range 0-65

The Aalborg Instruments PMR1-017393 is a precision variable area flowmeter, commonly known as a rotameter, designed for accurate measurement and control of low-flow gases or liquids in industrial, laboratory, and process applications. Featuring a transparent tapered tube with a floating indicator, it provides direct visual readings of flow rates in the range of 0-65 (unit unspecified, likely cc/min or similar based on scale). This model includes an integrated needle valve for fine flow adjustment, enhancing its utility in systems requiring regulated flow. Key benefits include simple installation, no power requirement, low cost, and durability in harsh environments, with materials like stainless steel fittings and glass tube offering corrosion resistance. Drawbacks may include manual reading and limited suitability for high-pressure or high-flow scenarios compared to digital mass flowmeters. It outperforms basic sight glasses in accuracy (±5% typical) and is ideal for applications such as gas mixing, environmental testing, and chemical dosing. Based on attached images, the unit appears in good used condition with no visible damage, featuring a caution label for max 200 psig operation. Comparable products from competitors like Brooks or Omega may offer electronic outputs but at higher cost. Additional details from images include serial number 337984-1 and potential manifold configuration for multi-line setups. Estimated market price for used units ranges from $100-250 USD, depending on calibration and accessories. Relevant resources: Aalborg Rotameter Datasheet (summary: covers installation, calibration, and specs; link: https://www.aalborg.com/documents/Variable_Area_Flowmeters.pdf); Model Decoder Guide (explains PMR series as panel-mount regulators with flow indication).