Bently Nevada 164746-01 Seismic Direct Input Card
Bently Nevada 164746-01 Seismic Direct Input Card
The Bently Nevada 164746-01 Seismic Direct Input Card is a seismic signal acquisition module designed for Trendmaster Pro DSM systems. It provides up to eight direct seismic input channels, supports high-resolution signal conversion, and interfaces with two-wire constant-current sensors. The card combines seismic data capture, sensor excitation, and signal processing functions within a single monitoring architecture.
Signal Acquisition and Processing
The card supports up to 8 independent seismic input channels, allowing multiple vibration or seismic measurement points to be monitored from a single module. A 16-bit A/D converter provides high-resolution signal digitization for detailed waveform acquisition and analysis.
With a frequency bandwidth extending to 4 kHz, the module can capture higher-frequency vibration content associated with machinery condition monitoring applications. Both synchronous and asynchronous processing modes are supported, enabling data collection strategies suited to different diagnostic requirements.
Sensor Interface
The 164746-01 is optimized for two-wire constant-current sensors, including compatible Bently Nevada AM Series accelerometers. Integrated sensor excitation simplifies field wiring by providing the operating power required by connected transducers.
The module supplies a constant bias current of 3.3 mA and provides a sensor excitation voltage of +24 VDC (± 5%). These parameters support stable sensor operation and consistent signal quality across connected channels.
System Integration
This card is specifically designed for use within the Trendmaster Pro Dynamic Scanning Module (DSM) platform. In a Trendmaster Pro architecture, seismic input cards perform front-end signal acquisition before data is processed and managed by the monitoring system.
A single data acquisition computer can support up to 150 DSM modules, allowing large-scale condition monitoring systems to be configured using distributed seismic measurement points.
Environmental Protection
The circuit assembly is protected with conformal coating to help resist moisture, airborne contaminants, and corrosion. This protective treatment supports long-term operation in industrial monitoring installations where environmental exposure may affect electronic assemblies.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 164746-01 |
| Brand | Bently Nevada |
| Product Type | Seismic Direct Input Card |
| Input Channels | Up to 8 independent seismic inputs |
| A/D Resolution | 16-bit |
| Frequency Bandwidth | Up to 4 kHz |
| Processing Modes | Synchronous and Asynchronous |
| Supported Sensor Type | Two-wire constant-current sensors |
| Typical Compatible Sensors | Bently Nevada AM Series accelerometers |
| Sensor Bias Current | 3.3 mA |
| Sensor Excitation Voltage | +24 VDC (± 5%) |
| System Compatibility | Trendmaster Pro DSM |
| Maximum DSM Support | Up to 150 DSM modules per acquisition computer |
| Protective Coating | Conformal coating |
| Weight | Approx. 230g |
Frequently Asked Questions
Q: How many sensors can the 164746-01 connect to directly?
A: The module supports up to 8 independent seismic input channels, allowing up to eight compatible seismic sensors to be connected, subject to system configuration and wiring requirements.
Q: What type of sensors is this card designed for?
A: It is optimized for two-wire constant-current sensors and is intended to operate with compatible devices such as Bently Nevada AM Series accelerometers.
Q: Does the module provide sensor power, or is an external supply required?
A: The card provides integrated sensor excitation with +24 VDC (± 5%) and a 3.3 mA bias current for supported sensor types, reducing the need for separate sensor power hardware.
Bently Nevada 164746-01 Seismic Direct Input Card
