Metrix 440 Economical Vibration Switch

Model: 440 (440SR, 440DR)

It looks like you’re describing a specific type of electronic vibration switch, likely for use in machinery or equipment monitoring. Here’s a summary of the key features and functions based on your description:

Overview of the Electronic Vibration Switch

• Technology: Utilizes a solid-state crystal accelerometer that generates an electrical output when subjected to vibration.
• Output Processing: The electrical output is converted into a velocity-proportional signal.
• Limit Comparison: This signal is compared to a preset threshold, triggering a solid-state relay if the threshold is exceeded.
• Mechanical Components: The switch is predominantly solid-state, meaning it has no moving parts, which enhances reliability. Mechanical relays can be used but are optional.

Key Features

• Built-in Time Delay:
  • Prevents false alarms or shutdowns caused by temporary spikes in vibration levels.
  • Specifically designed to accommodate the typical high vibration experienced during machine start-up, thus avoiding unnecessary trips.
  • Standard alarm trip delay is set at three seconds, adjustable in the field between 2 to 15 seconds.

Benefits

• Reliability: Solid-state design reduces wear and maintenance needs compared to mechanical switches.
• Customizability: Adjustable alarm delays allow for tailored settings based on specific machine characteristics and operational requirements.
• Protection: Maintains appropriate trip levels to ensure machinery protection without being overly sensitive during start-up.

Product Specifications

• Approximate Weight: 1.6 kg (3.5 lbs)

If you need more specific details or if you have any questions about the application or installation of this device, feel free to ask!

Documents

• Datasheet
• Installation Manual