
( Brand: Key ), ( Manufacturer Part Number: 61717 ), ( Part Type: Instrument Len )
The **Key 61717 Flowmeter (13 25 SCFM Air, 5/8" Lens Rotameter)** is a precision-engineered, float-type flowmeter designed to provide accurate and reliable measurement of compressed air or gas flow rates within a compact, durable housing. This versatile instrument features a **5/8-inch lens float tube**, which accommodates a wide range of flow rates from **13 to 25 standard cubic feet per minute (SCFM)** of air, making it ideal for applications in industrial automation, laboratory settings, or HVAC systems where consistent airflow monitoring is critical. The rotameter s **graduated glass tube** allows for direct visual reading of flow rates, ensuring quick and intuitive assessment without the need for additional instrumentation. Constructed with a **high-quality borosilicate glass float tube**, this flowmeter offers excellent chemical resistance and thermal stability, ensuring long-term accuracy even in environments with fluctuating temperatures or corrosive gases. The **metal body housing**, typically made from durable brass or stainless steel, provides structural integrity while maintaining compatibility with standard piping systems via threaded or flanged connections. Its **low-pressure drop design** minimizes energy loss, making it an efficient choice for applications where system performance is a priority. The **floating ball indicator** within the tube responds dynamically to flow changes, providing real-time feedback that helps operators maintain optimal process conditions. Whether used in pneumatic testing, air filtration systems, or as part of a larger control loop, the Key 61717 delivers dependable performance with minimal maintenance requirements. Its compact size and straightforward installation make it a practical solution for both new installations and retrofitting existing systems.
### **Pros and Cons of buying a Key 61717 Flowmeter (13 25 SCFM Air, 5/8" Lens Rotameter)**
#### **Pros:**1. **Precision Measurement** Rotameters are known for providing accurate flow rate readings, making them ideal for applications requiring consistent air or gas flow control.
2. **Wide Flow Range (13 25 SCFM)** The specified range covers many common industrial, laboratory, or workshop applications, such as compressed air systems, HVAC testing, or small-scale pneumatic tools.
3. **Durable Construction** The 5/8" lens size suggests it is built for moderate pressure applications, reducing the risk of breakage from minor fluctuations.
4. **Easy Installation & Maintenance** Rotameters are typically straightforward to install in-line with piping, and the glass tube allows for visual inspection without disassembly.
5. **Cost-Effective for Basic Needs** Compared to electronic flow meters, this mechanical option is often more affordable while still providing reliable readings.
6. **Compatibility with Air** Since it is designed for air (SCFM rating), it avoids potential issues with corrosive or viscous fluids that could damage other flow meters.
7. **No Power Required** Unlike digital or electronic flow meters, this mechanical device operates passively, eliminating dependency on electricity or calibration software.
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#### **Cons:**1. **Limited Flow Range** The 13 25 SCFM range may be too narrow for applications requiring higher or lower flow rates, necessitating additional meters or adjustments.
2. **Glass Breakage Risk** The rotameter s glass tube can shatter if subjected to excessive pressure, debris, or thermal shock, potentially causing leaks or contamination.
3. **Manual Reading Required** Unlike digital meters, this device requires visual inspection, which can be inconvenient in remote or high-traffic environments.
4. **Pressure Dependency** Accurate readings depend on stable upstream pressure; fluctuations can lead to inaccurate flow measurements.
5. **No Digital Output** If integration with data logging or automation systems is needed, this analog meter will require additional converters or manual recording.
6. **Potential for Drift Over Time** Like all mechanical devices, the float or internal components may wear out, leading to gradual inaccuracies that require recalibration.
7. **Limited Material Options** The body may be made of plastic or metal, which could degrade with exposure to certain chemicals, moisture, or extreme temperatures.
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### **Conclusion:**The **Key 61717 Rotameter** is a practical choice for applications requiring **moderate, accurate air flow measurement** within its specified range (13 25 SCFM). It excels in **low-maintenance, analog-based environments** where cost and simplicity are priorities. However, its **limited range, fragility, and lack of digital features** make it less suitable for high-precision, automated, or extreme-condition applications.
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### **Recommendation:** - **Buy if:**- You need a **budget-friendly, reliable analog flow meter** for air applications.
- Your workflow involves **manual monitoring** and does not require digital integration.
- The **13 25 SCFM range** aligns with your typical flow demands.
- You can **mitigate risks** (e.g., using protective guards, avoiding extreme pressure spikes).
- **Consider Alternatives if:**- You require **higher flow rates** (e.g., >25 SCFM) or **lower precision needs** (e.g.,
- Your environment involves **harsh conditions** (e.g., high vibration, corrosive gases, or extreme temperatures).
- You need **digital output, remote monitoring, or automation compatibility**.
- You prefer **more durable materials** (e.g., stainless steel rotameters for industrial use).
For **long-term or high-stakes applications**, a **digital flow meter with calibration capabilities** or a **stainless steel rotameter** may be worth the higher cost. However, for **basic, low-risk air flow measurement**, this rotameter provides a **cost-effective and functional solution**.
Please refer to the photos. Made by Key, a trusted brand in precision measurement, this flow meter accurately measures the rate of air within specified range 13-25 S cfm . The Key Instruments Flowmeter 13-25 S cfm Air 5/8 Lens 61717 Rotameter is a reliable flow meter designed for use in variety of industrial applications. Key Instruments Flowmeter 13-25 S cfm Air 5/8 Lens 61717 Rotameter FREE SHIPPING.
With a 5/8 lens, it provides clear and easy-to-read readings, making valuable tool for monitoring controlling fluid flow in various systems. Ideal for businesses and industrial settings requiring precise measurement control of air flow.