How To Specify A New Pressure Transducer When Ordering.

When ordering a new melt pressure transducer, you need to specify certain parameters to ensure compatibility with your system and process.   Here is a recent blog related to key features that may also be useful. https://www.nononsensors.com/post/key-features-of-melt-pressure-transducers

Here's a comprehensive guide on what to consider before ordering:

1. Pressure Range

• What to Specify: The operating pressure range (e.g., 0-10,000 psi or 0-700 bar).

• Considerations: Ensure the range matches your system’s working pressure. It's best to select a transducer where your normal operating pressure is within 50-75% of its full-scale range for optimal accuracy and longevity.

2. Temperature Range

• What to Specify: The process temperature range the transducer will encounter.

• Considerations: Check both the melt temperature and ambient conditions. Select a transducer with a diaphragm and housing rated to withstand these temperatures (e.g., 400°C or higher for plastics processing).

3. Output Signal

• What to Specify: The type of output signal required by your system (e.g., 3mV/V, 4-20mA, 0-10V, or digital output).

• Considerations: Match the transducer output to your control system or signal conditioning equipment.

4. Thread Type and Size

• What to Specify: The thread type and size for mounting the transducer.

• Common Types: M14x1.5, 1/2”-20 UNF, or other industry-standard threads.

• Considerations: Ensure compatibility with the port on your equipment or extrusion barrel.

5. Diaphragm Material

• What to Specify: The material of the diaphragm (e.g., stainless steel, Hastelloy, or Inconel).

• Considerations: Choose a material resistant to the chemical and abrasive nature of the melt being processed.

6. Electrical Connection

• What to Specify: The type of electrical connection or connector (e.g., cable length, DIN, bayonet, or M12 connector).

• Considerations: Ensure the connection matches your existing wiring or control system requirements.

7. Accuracy

• What to Specify: The required accuracy level (e.g., ±0.5% or ±1% of full-scale output).

• Considerations: Higher accuracy transducers may be necessary for precision applications.

8. Flexibility (if needed)

• What to Specify: Whether you need a flexible stem or rigid configuration.

• Considerations: Flexible stems allow the transducer electronics to remain away from high-temperature zones.

9. Fill Material

• What to Specify: The type of fill material inside the sensor (e.g., mercury-filled, NaK-filled, or oil-filled).

• Considerations: Mercury and NaK are common in high-temperature environments. NaK and oil are RoHS-compliant for environmentally sensitive applications.

10. Response Time

• What to Specify: The desired response time for the transducer.

• Considerations: Fast response times are critical for dynamic pressure measurement in rapidly changing processes.

11. Environment and Certification

• What to Specify: Any required certifications (e.g., CE, ATEX for hazardous environments).

• Considerations: Ensure the transducer meets environmental or safety standards for your application.

Example Specification Format

When placing an order, your specification might look like this:

Final Tips

1. Consult the Manufacturer: If you’re unsure about any parameter, consult the manufacturer or supplier.

2. Replacement Matching: If you’re replacing an existing transducer, reference its model number and specifications for guidance.

3. Stock Availability: Check if the required transducer is a standard model or if customization is needed, which might affect delivery time.

With this information, you can confidently specify and order the right melt pressure transducer for your needs.  NoNonSensors is ready to assist with your replacement, or optimization needs!

www.NoNonSensors.com | sales@nononsensors.com