Introduction to the 3300/20-12-01-00-00-00
The 3300/20-12-01-00-00-00 is a Proximitor® Seismic Transmitter from the Bently Nevada 3300 monitoring system. This device is a versatile, 4-20 mA loop-powered transmitter that uniquely combines two critical machinery monitoring functions in a single, compact unit: relative shaft displacement (via a proximity probe) and absolute casing vibration (via a built-in seismic sensor). It converts these mechanical signals into two independent, standardized 4-20 mA analog outputs. This allows for comprehensive machine health monitoring by providing both shaft dynamic motion and bearing housing vibration data to a PLC or DCS, making it an efficient solution for a wide range of assets.
Technical Parameters
The key technical specifications for the 3300/20 Proximitor Seismic Transmitter are as follows:
| Parameter | Specification |
|---|---|
| Part Number | 3300/20-12-01-00-00-00 |
| Description | Proximitor® Seismic Transmitter (Dual Channel 4-20 mA) |
| Output Signal | Two independent 4-20 mA, two-wire, loop-powered signals. |
| Channel 1 Parameter | Relative Shaft Displacement (via proximity probe). |
| Channel 2 Parameter | Casing Vibration Velocity (via internal seismic sensor). |
| Displacement Range | Configurable, e.g., 0 to 100 mils (0 to 2.5 mm) peak-to-peak. |
| Velocity Range | Configurable, e.g., 0 to 1.0 in/s (0 to 25.4 mm/s) True Peak. |
| Frequency Response | Displacement: 10 Hz to 1 kHz Velocity: 4.5 Hz to 1 kHz |
| Power Supply | Typically 18 to 30 VDC, loop-powered. |
| Electrical Connection | Conduit entry with terminal block. |
| Housing Material | Cast aluminum or stainless steel. |
| Mounting | 1/4-28 UNF threaded stud or M10 x 1.5 threaded hole. |
| Dimensions (Approx.) | 80 mm x 80 mm x 60 mm (3.15 in x 3.15 in x 2.36 in) |
| Weight | Approx. 0.9 kg (2.0 lbs) |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Compliance | Often available with ATEX, IECEx, or other hazardous area certifications. |
Application Scenarios
The 3300/20 transmitter is ideal for mid-range criticality machinery where a compact, cost-effective solution for comprehensive monitoring is required, eliminating the need for separate transmitters.
Motor-Driven Pumps and Fans:
Monitoring both the shaft relative displacement (for misalignment, imbalance) and the casing vibration (for bearing health and structural resonance) on critical pumps and fans in water treatment, power plants, and HVAC systems.
Compressors:
Providing dual-parameter monitoring on smaller centrifugal and reciprocating compressors, offering a complete picture of both rotor and structural dynamics.
Paper Machine Rolls and Gearboxes:
Monitoring large rolls and gearboxes by measuring casing vibration while also using a proximity probe to check for shaft runout or movement.
General Purpose Machinery:
A versatile solution for any rotating equipment where both shaft and bearing health need to be tracked for predictive maintenance programs, feeding data directly into a plant's control system.
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
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