Description

Bently Nevada 16925-20 Interconnect Cable

Configured for signal transmission between vibration sensing elements and machinery protection input modules in Bently Nevada 3500 Series monitoring architecture, the Bently Nevada 16925-20 (16925 interconnect cable) provides direct electrical interconnection between accelerometer/Velomitor sensor outputs and acquisition electronics.

The Bently Nevada 16925-20 functions as a 3-conductor shielded signal path designed for low-level dynamic vibration signal transport with controlled impedance and EMI suppression characteristics.

Suffix Breakdown & Model Matrix

• Base Model: 16925 interconnect cable series
• Suffix "-20": factory-defined cable length equal to 20 ft (approx. 6.1 m)
• No additional electrical variant encoding present in suffix structure
• Electrical behavior remains consistent across length variants within 16925 family

Hardware Specifications

Parameter	Specification
ModelBrand	Bently Nevada 16925-20
Weight	0.46 kg to 2.0 kg (packaging dependent)
Dimensions	Not specified
OperatingTemp	Not specified
PowerConsumption	Passive component (no power consumption)
Conductor Count	3 conductors
Conductor Material	22 AWG tinned copper
Shielding	100 percent tinned copper braid
Working Voltage	<= 300 V AC/DC
Capacitance	<= 60 pF/m
Characteristic Impedance	50 ohm +/- 3 percent
Cable Length	20 ft

Mechanical Signal Integrity Suppression Mechanism (Bently Nevada System Binding)

Within the vibration monitoring chain, Bently Nevada interconnect assemblies such as the 16925-20 are engineered to maintain controlled impedance continuity between sensor transducers and monitor input conditioning stages.

In rotating machinery measurement loops, shielding geometry and braid coverage are used to reduce cross-talk coupling between adjacent channels, particularly in multi-probe configurations where eddy-current proximity probe channels and velocity transducers operate in close routing proximity. The cable design supports stable low-amplitude signal transport without introducing measurable phase distortion under standard 3500 Series acquisition bandwidths.

Frequently Asked Questions

Q: Does the 16925-20 support hot-swap during live vibration monitoring?
A: No. The cable is a passive interconnect. Connection or disconnection under energized sensor loop conditions may introduce transient signal spikes at the monitor input.

Q: Is the shielding terminated at both ends?
A: Yes. The overall braid shield is intended to be terminated to system ground reference at connector interfaces to maintain EMI rejection integrity across the full signal path.

Q: Does cable length variation affect impedance matching?
A: Within the 16925 series, impedance is controlled to 50 ohm nominal. Length variations primarily affect total capacitance load, not characteristic impedance.

Field Installation Guidelines

• Maintain continuous shield termination at connector backshell interfaces
• Avoid parallel routing with high voltage or switching power conductors
• Minimum bend radius should follow standard industrial cable handling practice for 22 AWG shielded instrumentation cable
• Install within conduit when exposed to mechanical abrasion zones or high traffic routing areas
• Ensure proper strain relief at both sensor and monitor termination points to prevent conductor fatigue

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems