The Metrix ST5491E-021-420-00 vibration transmitter combines a precision case-mounted velocity sensor and signal conditioner in one compact package. Designed for industrial equipment monitoring, it provides a reliable 4–20 mA output proportional to vibration velocity, allowing direct connection to PLC, DCS, or other monitoring systems. Its rugged stainless steel construction and advanced filtering functions ensure accurate, stable performance in harsh environments.
Reliable and Accurate Vibration Monitoring
The ST5491E delivers high-accuracy vibration measurement for motors, pumps, compressors, and rotating machinery. With a built-in LCD indicator, technicians can instantly view readings in ips or mm/s, reducing the need for external instruments. Its loop-powered design simplifies wiring, while integrated temperature and shock protection enhances durability in demanding industrial sites.
Enhanced Signal Performance
This transmitter features advanced high-pass and low-pass filters that reduce noise and prevent false readings. Operators can select frequency response ranges up to 2000 Hz, ensuring precise velocity measurement across different applications. The ST5491E also includes built-in strain isolation, minimizing the impact of mounting stress and housing vibration on measurement accuracy.
Technical Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Metrix Instrument Co. |
| Model | ST5491E-021-420-00 |
| Product Type | Case-Mounted Vibration Transmitter |
| Output Signal | 4–20 mA proportional to velocity |
| Display | LCD, 2½ digits (ips or mm/s) |
| Accuracy | ±5% |
| Frequency Response | 2–1500 Hz (standard), up to 2000 Hz optional |
| High-Pass Filter Options | 2, 5, 10, 20, 50, 100, 200 Hz |
| Low-Pass Filter Options | 500, 1000, 1500, or 2000 Hz |
| Supply Voltage (Vs) | 13–30 VDC |
| Load Resistance | 50 × (Vsupply − 13) Ω |
| Electrical Isolation | 500 Vrms circuit-to-case |
| Connection Type | 2-wire, flying leads (457 mm, 18 AWG) |
| Enclosure Material | 303 or 316 Stainless Steel |
| Operating Temperature | −10°C to +70°C (14°F to 156°F) |
| Storage Temperature | −10°C to +70°C |
| Relative Humidity | 95%, non-condensing |
| Mounting Stud Options | ¼” NPT, ½” NPT, 3/8–24 UNF, ½–20 UNF, M8×1, M10×1.25 |
| Certifications | NRTL Class I Div 1 & 2, Class II Div 1, Groups C–G |
| Power Type | Loop-powered (two-wire) |
Origin, Dimensions, and Weight
- Country of Origin: USA
- Dimensions: 89 mm × 33 mm × 33 mm (approx.)
- Weight: 280 g (9.9 oz)
Key Features
- Integrated velocity sensor and signal conditioner
- LCD display for real-time vibration readings
- 4–20 mA loop-powered output for direct system integration
- Wide frequency response up to 2000 Hz with customizable filters
- High isolation and strain-free stainless steel housing
- Compatible with hazardous area applications (Class I & II certified)
- Simple installation with multiple stud and thread configurations
Details
| Weight | 0.28 kg |
|---|---|
| Dimensions | 89 × 33 × 33 mm |
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