1900/27 BENTLY NEVADA Technical Data
1900/27 BENTLY NEVADA Input Channel: 1 single-channel input.
1900/27 BENTLY NEVADA Sensor Compatibility: 100 mV/g accelerometers or velocity transducers.
1900/27 BENTLY NEVADA Maximum Range: 20 g peak.
1900/27 BENTLY NEVADA Frequency Response: Up to 614 Hz.
Analog Output: 4-20 mA current loop for PLC/DCS trending.
Relay Outputs: Dedicated Alarm and Danger contacts for machine shutdown protection.
Local Display: Integrated LCD screen for real-time value and status reading.
Operating Temperature: -40°C to 85°C.
Mounting Type: Stand-alone unit (requires no bulk rack chassis).
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BENTLY NEVADA vibration monitor Key Features
BENTLY NEVADA vibration monitor Core Monitoring
Stand-Alone Design: The 1900/27 operates independently as a single-channel monitor without requiring a system rack.
Velocity Conversion: Its internal circuit transforms raw acceleration inputs into Peak Velocity measurements.
Buffered Output: Features a dedicated front terminal providing raw signal access for external diagnostic tools.
BENTLY NEVADA vibration monitor Safety & Alarms
Dual Relays: Includes independent SPDT contacts configured for Alert and Danger machine trip protection.
Trip Delay: Built-in 1900/27 logic delays alarm activation during machine startup to prevent false shutdowns.
Bypass Function: Features internal maintenance switches to safely inhibit relays during system testing.
BENTLY NEVADA vibration monitor System Interface
4-20 mA Loop: Transmits a continuous analog trend signal directly from the monitor to any PLC/DCS.
Status LEDs: Front-panel indicators provide immediate visual tracking of "OK" circuit faults and alarm states.
Dual Power Option: Factory-ordered in either high-voltage AC/DC or low-voltage DC hardware variants.
BENTLY NEVADA vibration monitor FAQ
Q1: What does the Bently Nevada 1900/27 box actually do on a machine?
The 1900/27 vibration monitor is just a simple, single-channel monitor that stands alone on your machine without needing a large system rack. You plug a standard 100 mV/g accelerometer sensor straight into 1900/27 vibration monitor, and it automatically recalculates that raw vibration into Peak Velocity numbers to track machine health.
Q2: What happens to the 4-20 mA loop when you flip BENTLY NEVADA 1900/27 into bypass?
That depends entirely on how you set up the little plastic jumpers inside the unit. You can set the 1900/27 vibration monitor to lock the 4-20 mA loop at a flat 2 mA while you do maintenance, or tell the 1900/27 to keep sending live vibration numbers to your DCS or PLC anyway.
Q3: Why are the lights on the front of BENTLY NEVADA 1900/27 blinking at me?
A flashing LED on the Bently Nevada 1900/27 just means a fault happened earlier but the sensor is fine now. For example, if the 1900/27 vibration monitor green "OK" light is blinking, a wire or sensor acted up in the past and recovered; you just have to press the manual reset button to stop the blinking.
Q4: Can I wire a standard proximity probe or velomitor straight into BENTLY NEVADA 1900/27?
No, you can't. The 1900/27 vibration monitor is built only to read 100 mV/g piezoelectric accelerometers. Wiring a proximity probe or a raw coil velomitor to 1900/27 vibration monitor screw terminals throws off the electrical impedance and immediately trips a permanent "NOT OK" circuit fault.
Q5: How do I pull diagnostic data from this old 1900/27 into my plant software?
You need a small add-on part called a Transducer Interface Module (TIM). The TIM hooks into the buffered output port on the Bently Nevada 1900/27 and streams the raw wave signals to your Trendmaster software without messing up the 1900/27 local shutdown relays.
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Email: sales@sparecenter.com
