Product: 990-08-XX-01-00 (Assembly: 165353-01)
Category: Vibration Transmitter / Loop-Powered Seismic Transmitter (Presumed from part number structure and known variants)
Overview:
The 990-08-XX-01-00, with assembly number 165353-01, is a robust, loop-powered, 2-wire vibration transmitter. It is designed to measure the absolute casing vibration (in velocity) of industrial machinery and convert it into a standard 4-20 mA analog signal proportional to the vibration level. The XX in the part number typically denotes the measurement range (e.g., 0-25 mm/s, 0-50 mm/s). This device simplifies integration by providing a signal that can be directly wired to a PLC, DCS, or control room, making it ideal for widespread monitoring of plant assets where full-scale protection systems are not required.
Key Parameters & Specifications
| Parameter | Specification / Description |
|---|---|
| Function | Loop-Powered, 2-Wire Vibration Velocity Transmitter. |
| Primary Measurand | Casing Vibration Velocity (typically RMS). |
| Output Signal | 4-20 mA, two-wire, linear with vibration. Fault condition typically indicated by <3.6 mA or >21 mA. |
| Measurement Range | Selectable via the XX code (e.g., 0-25 mm/s (0-1.0 in/s) RMS or 0-50 mm/s (0-2.0 in/s) RMS are common). |
| Frequency Response | 10 Hz to 1,000 Hz (standard for casing vibration per ISO standards). |
| Power Supply | 12 to 30 VDC loop power (compatible with standard PLC/DCS power supplies). |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F). |
| Sensing Element | Integrated piezoelectric accelerometer with internal signal conditioning. |
| Housing & Enclosure | Cast aluminum or stainless steel housing with integral conduit connection. Typically rated IP66/IP67 / NEMA 4X for harsh environments. |
| Mounting | Single ¼"-28 UNF (or M6) stud on the base for direct mounting to the machine casing. Mounting orientation is typically non-critical. |
| Electrical Connection | ½" NPT conduit entry with integral terminal block for easy wiring. |
| LED Indicator | Often includes a status LED (e.g., green for power/OK). |
| Calibration | Factory calibrated; no field adjustment required. |
| Dimensions (Typical) | Compact cylindrical design: Approx. 85-90 mm (3.35-3.55 in) in height (excluding connector/stud) x 60-65 mm (2.36-2.56 in) in diameter. |
| Weight (Approx.) | ~0.5 kg (1.1 lbs), depending on housing material. |
Primary Application Scenarios
Plant-Wide Predictive Maintenance (PdM) Programs:
Ideal for cost-effective, permanent monitoring of non-critical but important assets across a facility. The 4-20 mA output allows for easy integration into existing control systems for continuous trend monitoring.
General Industrial Machinery Monitoring:
Pumps (Centrifugal, Positive Displacement)
Electric Motors (Medium to Large HP)
Fans & Blowers (Cooling tower fans, induced/forced draft fans)
Compressors (Reciprocating, smaller centrifugal units)
Mixers, Agitators, and Gearboxes
OEM-Integrated Monitoring:
Built into packaged machinery (like compressor skids or pump trains) by Original Equipment Manufacturers to provide a standardized vibration feedback signal to the buyer's control system.
Industries & Environments:
Water & Wastewater Treatment: Monitoring large pump vibration.
Power Generation: Auxiliary equipment monitoring (coal handling pumps, fans).
Mining & Minerals: Conveyor drives, crusher motors.
Chemical Processing: Monitoring pumps and mixers in corrosive environments (requires appropriate housing material).
HVAC: Large commercial/industrial fan and chiller monitoring.
Critical Note: The XX in the part number 990-08-XX-01-00 is a variable placeholder that defines the measurement range and possibly the electrical connector type. The assembly number 165353-01 is the key to identifying the exact built configuration.
Example:
990-08-50-01-00likely indicates a 0-50 mm/s range.Action Required: To obtain precise specifications (especially the exact range, connector, and certifications), the assembly number 165353-01 must be referenced in the official Baker Hughes Bently Nevada documentation or through their parts database. This number defines the exact "as-built" unit.
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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