Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1701/25 |
| Part Number | 161141-01 |
| Brand | Bently Nevada |
| Product Type | Seismic Input Monitor |
| Product Series | FieldMonitor |
| Number of Channels | 2 |
| Input Signal Types | Velocity or acceleration transducer signals |
| Direct Velocity Frequency Range | 3 Hz to 5,500 Hz |
| Direct RMS / Integrated Velocity Frequency Range | 10 Hz to 5,500 Hz |
| Filter Attenuation | -80 dB/decade |
| Setpoint and Hysteresis Resolution | 0.5% of full scale |
| Alarm Time Delay | Programmable from 0.15 s to 20.0 s |
| Alarm Latching Mode | Non-latching |
| Operating Temperature | -20 to +70 deg C |
| Storage Temperature | -40 to +85 deg C |
| Operating and Storage Humidity | 5% to 95% RH, non-condensing |
| Power Consumption | 2.0 W maximum |
| Dimensions (H x W x D) | Approx. 127 x 21.6 x 105 mm |
| Weight | Approx. 0.2 kg |
| Country of Origin | USA |
Signal Processing
The monitor conditions incoming transducer signals and processes vibration measurements according to the selected measurement mode. Direct velocity measurement covers a different frequency range from RMS or integrated velocity processing. The programmable filters define the measurement bandwidth by attenuating signal components outside the selected high-pass and low-pass limits.
Alarm Configuration
The monitor compares processed measurements against configured alarm setpoints. Technicians can adjust alarm thresholds, hysteresis and time delays to match the monitoring requirements. The specified alarm mode is non-latching, so the unit does not retain an alarm solely through a latching function.
Frequently Asked Questions
Q: How many measurement channels does the 1701/25 provide?
A: The monitor provides two channels for processing signals from velocity or acceleration transducers. The channel configuration must match the intended transducer type and measurement mode.
Q: Can the filter settings be adjusted?
A: Yes. The monitor supports programmable 4th-order high-pass and low-pass filters. The selected cutoff frequencies determine the measurement bandwidth.
Q: What alarm settings are available?
A: The monitor supports programmable setpoints, hysteresis and alarm time delays from 0.15 s to 20.0 s. The specified alarm mode is non-latching.
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