Bently Nevada 1900/17 Proximitor Monitor
Chinese name: Single channel proximity (eddy current) sensor monitoring instrument
Independent panel monitoring instrument (not belonging to the 3500 rack series, old-fashioned 1900 independent monitoring product line)

1900 series monitor appearance reference
1、 Basic Overview&Shutdown Status
✅ Officially discontinued EOL (Legacy models have been phased out)
The original factory no longer accepts new orders; The market only has stock of brand new parts and refurbished spare parts.
Directly replace the new model: 2300/20 series vibration monitor
2、 Core functions
Single channel input
Compatible with 3300XL 5mm/8mm eddy current preamplifier signal; Used for measuring: axial radial vibration and axial displacement.
❗ Does not support 11mm probes, speed sensors, and acceleration sensors.
Signal and output configuration
Two level alarm: Alert, Danger
1 set of SPDT relay alarm output
BNC Buffer Dynamic Signal Output (Oscilloscope Acquisition)
Built in Trendmaster Pro dedicated communication interface
⚠️ [Major Shortcoming] Native without 4-20mA analog output and Modbus, it is very inconvenient to interface with modern DCS.
Sensor circuit diagnosis
Continuously monitor the gap voltage and automatically identify probe breakage and cable short circuit faults.
3、 Key hardware parameters
Power supply: 24VDC
Installation: Embedded installation with panel openings (non DIN rail, distinguishing 2300 series DIN rail models)
Frequency response: 4~4000Hz
Measurement mode: shaft vibration (peak to peak), shaft position
Comes with LED status indicator light and local reset button
4、 1900/17 VS Alternative Model 2300/20 Core Comparison
Project 1900/17 (discontinued old model) 2300/20 (replacement model)
Single channel, dual channel (capable of simultaneous dual axis vibration/displacement)
Installation method: Embedded panel with standard DIN rail
4~20mA output ❌ Nothing ✅ Standard configuration includes 2 channels of 4-20mA
Communication only using Trendmaster Pro proprietary protocol Modbus TCP Ethernet
Sensor compatibility limited to 5/8mm eddy current, eddy current, velocity, acceleration sensors universal
5、 Important procurement suggestions
New projects are strictly prohibited from using 1900/17, and direct procurement of 2300/20 is required;
Repair of old equipment spare parts must use 1900/17: a complete power on test report is required before procurement;
Renovation and replacement plan: Dismantle 1900/17 and replace 2300/20. Pay attention to inconsistent installation hole sizes and renovate the cabinet.