Product Description
The part number 991-06-70-01-00 does not conform to the standard numbering conventions of major machinery protection manufacturers like Bently Nevada. Based on available information, this model is identified as a Vibration Transmitter or Vibration Switch. This type of device is typically used for general-purpose machinery protection rather than high-speed, critical turbomachinery. It often integrates a sensor (like a 4-20 mA velocity sensor or a seismic switch) and electronics into a single, ruggedized housing. Its primary function is to monitor overall vibration levels and provide a continuous analog output or a relay-based switch signal to alert operators or shut down equipment if a pre-set vibration threshold is exceeded.
Key Parameters and Specifications
The following table summarizes the typical technical parameters for a product of this nature. Please note that these are representative values and must be verified for the specific model.
| Parameter | Specification / Value (Typical) |
|---|---|
| Product Type | Vibration Transmitter / Vibration Switch |
| Sensing Technology | Piezoelectric Velocity Sensor (Likely) |
| Output Signal | 4-20 mA (for transmitter) AND/OR Relay Output (for switch) |
| Measurement Range | 0 to 20 mm/s (or 0 to 0.8 in/s) RMS / Peak (Typical for velocity) |
| Frequency Range | 10 Hz to 1,000 Hz (600 to 60,000 CPM) - Typical |
| Power Supply | 18-30 VDC (Typical for 2-wire 4-20 mA loops) |
| Setpoint Adjustment | Field-adjustable via potentiometers for alarm and shutdown levels. |
| Electrical Connection | Conduit entry with cable gland or terminal housing. |
| Operating Temperature Range | -30°C to 80°C (-22°F to 176°F) - Typical for industrial electronics. |
| Housing Material | Cast Aluminum or Stainless Steel (for corrosion resistance). |
| Mounting | ¼-28 UNF threaded stud or M10x1.5 bolt, directly to the machine housing. |
| Dimensions & Weight | Dimensions (Typical): ~ 80 mm (H) x 60 mm (W) x 50 mm (D) / ~ 3.1" x 2.4" x 2.0" Approx. Weight: 1.0 kg (2.2 lbs) |
Application Scenarios
This type of vibration transmitter/switch is designed for a wide range of industrial applications where reliable, cost-effective machinery protection is needed for rotating equipment that is not monitored by a full-scale system like a Bently Nevada 3500.
HVAC Systems: Monitoring large fans, blowers, and cooling tower fans in commercial and industrial buildings to prevent bearing failure and imbalance.
Water & Wastewater: Protecting pumps and motors in treatment plants to ensure operational continuity and reduce maintenance costs.
General Manufacturing: Monitoring motors, gearboxes, conveyors, and mixers in industries such as food and beverage, pulp and paper, and plastics.
Industrial Pumps: Providing basic protection for centrifugal and positive displacement pumps against mechanical failure.
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