Description:
The 1800/20-XX-90-02-00 MOD 158611-01 is a two-channel machinery protection vibration monitor manufactured by Bently Nevada (a Baker Hughes / GE brand), engineered as a compact, panel-mounted interim monitoring solution for rotating equipment. It accepts input from proximity probe and seismic transducer systems, conditions the signals into alarm-ready vibration and axial position values, and delivers both local indication and 4-20 mA proportional outputs to plant control systems.
Application Scenarios:
Consider a refinery cooling-water pump house where eight centrifugal pumps have been running for decades with no online protection — operators walk the floor with a handheld data collector, and a bearing failure on one pump in 2021 caused a two-day outage and an unplanned emergency seal replacement. Installing a 1800/20-XX-90-02-00 MOD 158611-01 on each pump closes that gap: the monitor continuously reads shaft-relative vibration from the existing 7200 or 3300 XL proximity probes, compares each channel against configurable Alert and Danger setpoints, and triggers hard-wired relay outputs into the plant DCS to trip the pump before a catastrophic bearing or seal failure occurs. Pain points such as undetected shaft rub, undetected axial thrust migration, late-stage bearing degradation, and the cost of full 3500-rack systems on non-critical machines are all addressed by a single panel-mounted unit — which is why the 1800/20-XX-90-02-00 MOD 158611-01 remains a go-to protection monitor for pumps, fans, small compressors, motors, and blowers across oil & gas, petrochemical, power generation, and water treatment applications.
Parameter:
| Main Parameters | Value / Description |
|---|---|
| Product Model | 1800/20-XX-90-02-00 MOD 158611-01 |
| Manufacturer | Bently Nevada (Baker Hughes / GE) |
| Product Category | Two-Channel Machinery Protection Vibration Monitor |
| Channel Configuration | 2 independent channels — accepts proximity probe (7200 / 3300 XL) or seismic sensor input |
| Measured Parameters | Radial shaft vibration, axial shaft position, casing/bearing housing vibration |
| Alarm Outputs | Alert and Danger setpoints per channel with Form-C relay contact outputs |
| Proportional Output | 4-20 mA per channel for connection to DCS/PLC analog input |
| Buffered Output | Buffered transducer signal for portable data collection and diagnostics |
| Power Consumption | ~5 W typical |
| Dimensions / Weight | 3.1 × 19 × 12.8 cm (1.2 × 7.5 × 5.0 in); ~0.26 kg (0.57 lb) |
| Mounting | Panel-mount housing; standard Bently Nevada 1800-series cutout |
| Operating Temperature | −20 °C to +85 °C (−4 °F to 185 °F) |
| Storage Temperature | −40 °C to +104 °C (−40 °F to 220 °F) |
| Relative Humidity | 5 % to 95 % non-condensing |
| Country of Origin | USA |
Specifications compiled from Bently Nevada 1800-series product references and verified reseller listings.
Technical Principles and Innovative Values:
- Innovation Point 1 — Two-channel interim architecture. The 1800/20-XX-90-02-00 MOD 158611-01 was designed by Bently Nevada as a bridge product between the legacy 7200 rack-monitor era and the modular 3300/3500 rack platforms, delivering genuine machinery protection in a single compact housing without requiring a full rack, power supply module, or system rack interface — a topology that keeps installed cost and panel footprint far below rack-based equivalents.
- Innovation Point 2 — Transducer-agnostic input conditioning. Each channel of the 1800/20-XX-90-02-00 MOD 158611-01 accepts input from Bently Nevada 7200-series or 3300 XL proximity probe systems, as well as compatible seismic sensors, allowing existing installed transducer bases to be reused without re-instrumenting the machine — a material saving on brownfield retrofits where probes and extension cables are already in place.
- Innovation Point 3 — Independent Alert and Danger setpoints per channel. The monitor carries separately configurable Alert (early warning) and Danger (trip) thresholds on each channel, so the 1800/20-XX-90-02-00 MOD 158611-01 can drive an alarm into the control room while simultaneously providing a hard-wired trip contact to the motor starter or breaker — a dual-tier protection philosophy that aligns with API 670 machinery-protection practice.
- Innovation Point 4 — Buffered signal output for diagnostic visibility. A dedicated buffered output on the 1800/20-XX-90-02-00 MOD 158611-01 lets plant reliability engineers connect a portable vibration analyzer or data collector without disturbing the protection function, enabling periodic waveform and spectrum analysis on the same signal that is driving the alarm logic.
- Innovation Point 5 — Rugged industrial packaging. Housed in a compact aluminium enclosure with a −20 °C to +85 °C operating envelope and 5 % to 95 % non-condensing humidity tolerance, the 1800/20-XX-90-02-00 MOD 158611-01 withstands outdoor pump-house and compressor-shelter conditions where consumer-grade instrumentation would degrade quickly
