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        3701/40 177988-01

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        1001 reviews ｜ Need a Specific Revision?
        The Bently Nevada 3701/40 177988-01 is a Prox Accel Seismic (PAS) Input Module designed for the ADAPT 3701 Machinery Dynamics Monitor.
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        Ships by Tuesday, October 27
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3701/40 177988-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3701/40 177988-01
        • Product Family:
          ADAPT 3701 Series
        • Product Type:
          PAS Input Module
        • Stock:
          1
        • Total Channel Count:
          7 channels (6 Dynamic + 1 Keyphasor/Speed)
        • Input Impedance (3-Wire):
          Nominal 10 kΩ
        • Input Impedance (2-Wire Seismoprobes):
          Nominal differential 9.98 kΩ
        • Buffered Output Interface:
          15-pin D-Sub connector (550 Ω output impedance)
        • Channels 1–6 (Dynamic Inputs):
          -24V Proximitor sensors, -24V 3-wire Accelerometers, 2-wire Seismoprobes, compatible 3rd-party inertial mass velocity sensors, Dynamic Pressure sensors
        • Channel 7 (Keyphasor/Speed Input):
          Proximitor sensors (single/multi-event) or Magnetic Pick-ups (single/multi-event)
        • Operating Temperature:
          -30°C to +65°C (-22°F to 149°F)
        • Storage Temperature:
          -40°C to +85°C (-40°F to 185°F)
        • Relative Humidity:
          0% to 95% non-condensing
        • Vibration Resistance:
          5g @ 57–500 Hz (IEC 60068-2-6)
        • Shock Resistance:
          15g, 11ms (IEC 60068-2-27)
        • Hazardous Area Approvals:
          CSA/NRTL/C (Class I, Div 2 / Zone 2); ATEX/IECEx (Ex nA nC IIC T4 Gc)
        • Weight:
          0.34 kg
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Applications Diagnostics & Protection Configuration & Programming Certifications

        Features:

        • Accepts signals from -24V Proximitor sensors, 3-wire accelerometers, 2-wire Seismoprobes, and dynamic pressure transducers.
        • Provides 6 configurable dynamic measurement channels and 1 dedicated Keyphasor or speed input channel.
        • Features built-in 15-pin D-Sub buffered transducer outputs for raw signal connection to diagnostic tools like ADRE 408.
        The Bently Nevada 3701/40 177988-01 is a Prox Accel Seismic (PAS) Input Module supplied in standard factory ordering configuration for integration into the ADAPT 3701 Machinery Dynamics Monitor system.

        This input module is designed to provide primary signal conditioning and acquisition for critical rotating machinery, including gearboxes, planetary gear systems, and roller element bearing equipment.

        The module installs directly into a 3701 Simplex or Duplex Terminal Base and requires field wiring to be properly connected according to sensor input types and system safety guidelines.

        The Bently Nevada 3701/40 177988-01 PAS Input Module is backed by the original equipment manufacturer (OEM).
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Monitoring vibration and dynamic pressure on gearboxes and planetary gearboxes.
        • Machinery protection and diagnostics for roller element bearing equipment.
        • Speed and Keyphasor phase reference tracking on rotating machinery shafts.
        • Includes an independent internal microcontroller dedicated to module-level hardware diagnostics and fault detection.
        • Provides continuous sensor status monitoring to detect broken wires and transducer fault conditions.
        • Maintains uninterrupted signal processing pathways to prevent disruption of primary machinery protection alarms.
        • Fully configured and validated through Bently Nevada Monitor Configuration (BNMC) software.
        • Supports independent channel-by-channel sensor type selection and signal range setting across channels 1 to 6.
        • Allows channel 7 to be programmed for single-event or multi-event Keyphasor triggering.
        • CSA/NRTL/C certified for Class I, Division 2 / Zone 2 hazardous locations.
        • ATEX and IECEx certified with Ex nA nC IIC T4 Gc protection rating for explosive atmospheres.
        • Complies with IEC 60068-2-6 for vibration resistance and IEC 60068-2-27 for mechanical shock resistance.
        Description
        Bently Nevada 3701/40 177988-01 serves as the primary signal acquisition interface for the ADAPT 3701 Machinery Dynamics Monitor, engineered specifically for critical rotating equipment like gearboxes, planetary gears, and roller element bearing machines. It receives and conditions raw analog signals from -24V proximity probes, 3-wire accelerometers, 2-wire Seismoprobes, and dynamic pressure transducers. Equipped with an internal microcontroller dedicated to self-diagnostics and fault detection, the module maintains continuous measurement integrity without interfering with the primary protection path.

        Designed for field-mountable installation near machinery skids, the Bently Nevada 3701/40 177988-01 significantly reduces field cabling requirements while providing versatile monitoring capabilities. Channels 1 through 6 are independently configurable to measure radial shaft vibration, axial thrust position, casing vibration, and dynamic pressure pulsations. Channel 7 is dedicated to Keyphasor or speed tracking, accommodating both single and multi-event signals from Proximitor sensors or magnetic speed pick-ups.

        To support advanced diagnostics and troubleshooting, the Bently Nevada 3701/40 177988-01 includes buffered transducer outputs accessible via a front 15-pin D-Sub connector. Utilizing optional breakout cables, these buffered signals can be easily routed to BNC connectors or portable diagnostic instrumentation like the ADRE 408 system. This ensures machinery specialists can conduct in-depth vibration analysis without disrupting the online safety and machinery protection functions.
        Alternative Names
        3701/40 177988-01 3701/40-177988-01 177988-01 3701/40 177988-o1 370140 177988-01 Bently Nevada 177988-01 Bently Nevada 3701/40 177988-01 3701/40 Prox Accel Seismic Module
        Technical notes
        The Bently Nevada 3701/40 177988-01 module installs into a Simplex or Duplex base and features an independent internal microcontroller for hardware diagnostics and fault detection.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        How many physical channels are available on the Bently Nevada 3701/40 177988-01 module?
        The Bently Nevada 3701/40 177988-01 features a total of 7 physical channels, comprising 6 configurable dynamic input channels and 1 dedicated Keyphasor/speed channel.
        What configuration software is required to set up the Bently Nevada 3701/40 177988-01?
        The Bently Nevada 3701/40 177988-01 is configured and validated using the Bently Nevada Monitor Configuration (BNMC) software.
        Does the Bently Nevada 3701/40 177988-01 offer raw signal output for diagnostic tools like ADRE 408?
        Yes, the Bently Nevada 3701/40 177988-01 provides buffered transducer outputs via a 15-pin D-Sub connector, which can be connected to ADRE 408 or BNC connectors using optional accessory cables.
        Is the Bently Nevada 3701/40 177988-01 compatible with Simplex and Duplex 3701 terminal bases?
        Yes, the Bently Nevada 3701/40 177988-01 can be installed into either a 3701 Simplex Terminal Base or a 3701 Duplex Terminal Base depending on redundancy requirements.
        Which sensor types are compatible with channels 1 through 6 on the Bently Nevada 3701/40 177988-01?
        Channels 1 to 6 on the Bently Nevada 3701/40 177988-01 support -24V Proximitor sensors, -24V 3-wire accelerometers, 2-wire Seismoprobes, compatible 3rd-party inertial mass velocity sensors, and dynamic pressure sensors.
        How can customers request a quote or check stock availability for the Bently Nevada 3701/40 177988-01?
        Customers can contact us to obtain a quote, check stock availability and lead times, or inquire about alternatives for the Bently Nevada 3701/40 177988-01.

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