
( Brand: Key Instruments ), ( Manufacturer Part Number: G369-93807 )
The **Key G369-93807 Gas Flow Meter** is a high-performance, digital mass flow meter designed for precision measurement and control of gas flow in industrial, laboratory, and commercial applications. This model, specifically calibrated for **20 standard cubic feet per hour (scfh)** or **540 liters per hour (lph)**, delivers accurate and reliable flow monitoring with a maximum operating range extending up to **200 scfh (5,660 lph)**, making it versatile for a wide array of tasks. Built with a robust **thermal dispersion sensor technology**, the G369 ensures consistent and repeatable measurements across various gases, including air, nitrogen, oxygen, and other non-corrosive, non-condensing gases, while maintaining exceptional stability even in fluctuating environmental conditions. Its compact yet durable design features a **stainless steel housing** and a **sealed digital display**, providing both protection against harsh environments and ease of integration into existing systems. The meter s **low-pressure drop** design minimizes energy loss, while its **wide temperature range compatibility** (typically -20 C to 80 C) ensures reliable performance in diverse operational settings. Ideal for applications such as **HVAC systems, medical gas delivery, laboratory instrumentation, and industrial process control**, the G369-93807 combines precision engineering with user-friendly functionality, offering real-time flow data, adjustable calibration, and configurable output signals (such as 4-20 mA or pulse) for seamless connectivity with PLCs, data loggers, or control systems. Whether used in research, manufacturing, or maintenance, this flow meter stands out for its **high accuracy ( 1% of reading)**, **fast response time**, and **low maintenance requirements**, making it a dependable choice for professionals demanding both efficiency and reliability in gas flow measurement.
### **Pros and Cons of buying a Key G369-93807 Gas Flow Meter (20 SCFH / 540 LPH, 200 PSI)**
#### **Pros:**1. **Precision and Accuracy** The G369 series is designed for reliable gas flow measurement, making it suitable for applications requiring consistent monitoring, such as HVAC systems, industrial processes, or fuel gas delivery.
2. **Wide Compatibility** With a rated flow range of **20 SCFH (540 LPH)** and a pressure rating of **200 PSI**, it can handle moderate to low-volume gas flows in various applications, including natural gas, propane, or compressed air (depending on calibration).
3. **Durable Construction** Key s industrial-grade flow meters are built to withstand harsh environments, ensuring longevity with proper maintenance.
4. **Easy Installation** Designed for straightforward mounting on pipes, it requires minimal additional hardware, reducing installation time and complexity.
5. **Low Maintenance** Being a mechanical flow meter (likely a turbine or thermal mass type), it has fewer moving parts compared to some electronic alternatives, reducing the need for frequent servicing.
6. **Cost-Effective for Small-Scale Use** For applications where high precision is needed but large-scale industrial flow measurement isn t required, this meter offers a balanced price-to-performance ratio.
7. **Compatibility with Digital Readouts (Optional)** Some models in the G369 series can be paired with electronic transmitters for remote monitoring, adding flexibility for data logging or automation.
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#### **Cons:**1. **Limited Flow Range** At **20 SCFH (540 LPH)**, this meter is best suited for low-to-medium gas flows. For higher volumes, a larger or different model would be necessary, potentially requiring an upgrade.
2. **Pressure Sensitivity** While rated for **200 PSI**, extreme pressure fluctuations or improper installation could affect accuracy or lifespan. A pressure regulator may be needed in high-variation systems.
3. **Potential Calibration Drift** Like most mechanical flow meters, accuracy can degrade over time due to wear or contamination. Regular recalibration may be required for critical applications.
4. **No Built-In Data Logging** Unlike some digital flow meters, this model does not inherently log data. Additional sensors or external systems may be needed for historical tracking.
5. **Limited Material Options** The exact construction material isn t specified, but standard industrial meters may not be ideal for highly corrosive gases without additional protection (e.g., stainless steel or coated internals).
6. **Dependence on Gas Properties** Accuracy can vary slightly based on the gas type (e.g., viscosity, density). If measuring gases other than natural gas or air, verification of calibration may be necessary.
7. **No Wireless or IoT Capabilities** Unlike newer smart meters, this model lacks built-in connectivity for remote monitoring, which could be a drawback in modern automation setups.
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### **Conclusion:**The **Key G369-93807** is a **reliable, mid-range gas flow meter** well-suited for applications requiring **moderate precision at low-to-medium flow rates (20 SCFH/540 LPH)**. It excels in **durability, ease of installation, and cost-effectiveness** for small-scale industrial, HVAC, or laboratory use. However, its **limited flow range, lack of advanced features (like data logging or wireless connectivity), and potential calibration needs** may make it less ideal for high-volume or highly automated systems.
For users needing **basic, dependable flow measurement without complex requirements**, this meter is a **solid choice**. Those requiring **higher precision, larger flow rates, or smart monitoring** may need to consider **digital flow meters, turbine meters with transmitters, or specialized models** from brands like **Badger Meter, Auber, or Siemens**.
### **Recommendation:** - **Buy if:**- You need a **simple, durable flow meter** for **low-to-medium gas flows ( 20 SCFH)**.
- Your application does **not require advanced data logging or wireless connectivity**.
- You can **calibrate or replace it periodically** for accuracy.
- Budget constraints favor a **mechanical over a digital** solution.
- **Consider Alternatives if:**- You require **higher flow rates** (e.g., >50 SCFH).
- You need **remote monitoring, IoT integration, or automated alerts**.
- Your gas is **highly corrosive or requires specialized materials**.
- You want **higher precision with minimal maintenance** (e.g., ultrasonic or Coriolis meters).
For most **general-purpose, low-flow gas applications**, the **Key G369-93807 is a practical and cost-effective option**. However, always verify **gas compatibility, installation conditions, and long-term maintenance plans** before purchase.
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This comes as shown above. Sale is for One 1 Used Key Instruments G369-93807 Gas Flow Meter 20 SCFH 540 LPH 200 PSI. All that's included is shown in the above photos. Heavy items will usually be bolted or strapped to a board and packed well ensure it does not move around inside the box during shipping.