Overview
The Metrix 440DR-2022-0000 is an electronic vibration switch designed for continuous machinery monitoring and protection. This switch utilizes a solid-state crystal accelerometer that provides an electrical output when deformed by vibration forces, with output electronically converted to a signal proportional to velocity. The 100-130VAC power supply and 4W consumption make it suitable for standard industrial control panels.
Key Features
- Dual setpoints: one for alarm and one for shutdown
- Solid-state relay (triac) outputs with 5A continuous rating and 100A peak capacity
- 4-20mA DC analog output for trending and remote indication with ±10% accuracy
- Built-in three-second time delay to prevent false trips from transient vibration spikes
- Epoxy-coated NEMA 4X enclosure rated for harsh industrial environments
- No moving parts except when configured with optional mechanical relays
Technical Specifications
- Input Voltage: 100-130VAC
- Power Consumption: 4W
- Model: 440DR (dual-setpoint variant)
- Number of Trips: Two (alarm and shutdown)
- Velocity Set Point Range: 0.1–1.5 in/sec or 0.2–3 in/sec peak
- Set Point Accuracy: ±10% with ±2% repeatability
- Time Delay: Field adjustable 2–15 sec (factory set 3 sec)
- Vibration Sensitive Axis: Perpendicular to base
- Weight: 1.6 kg (3.5 lbs)
- Certifications: CSA Class I Division
- Enclosure Rating: NEMA 4X
- Termination Load Resistance: Less than 450 ohms
Typical Applications
The Metrix 440DR is widely used in:
- Centrifugal pump monitoring and protection
- Electric motor condition assessment
- Compressor and fan vibration detection
- Turbomachinery alarm and shutdown circuits
- Industrial HVAC and process equipment
- Machinery protection in manufacturing facilities
Compatibility & Replacements
Compatible With
- Standard 100-130VAC industrial control panels
- PLC and DCS systems via solid-state relay outputs
- SCADA systems via 4-20mA analog trending output
- Mechanical and electric load circuits rated for triac control
- Remote monitoring and data acquisition systems
Replaces / Drop-In Replacement For
- Metrix Model 440SR (single-setpoint variant)
- Metrix Model 440 base configuration
- Earlier Metrix electronic vibration switch models with similar 100-130VAC rating
- Other 440DR- series variants with different options codes
Works With
- Industrial control relays and contactors
- AC/DC load circuits up to triac current rating
- Analog data loggers and trend monitoring software
- Field instrumentation and PLC discrete input modules
- Metrix installation and commissioning tools
