Bently Nevada 84140-01

Ordering Information

Part Number: 84140-01

Description: 4-channel isolated 4–20 mA analog output module with on-board precision terminations

Series Compatibility: Fits Bently Nevada 3500/3700 rack chassis

Replaces: 84140-00 (earlier revision)

Technical Parameters

Channels: 4 isolated analog outputs for Bently Nevada 84140-01, field-configurable to any backplane tag

Output Range: 4–20 mA (sink/source), compliance up to 800 Ω at 24 V DC

Accuracy: ± 0.1 % of span (including linearity, hysteresis, repeatability)

Resolution: 16-bit DAC (≈ 0.0006 mA steps)

Update Rate: 10 updates/sec per channel (simultaneous)

Isolation: 1 kV channel-to-chassis/channel-to-channel in Bently Nevada 84140-01

Loop Power: External 24 V DC source (18–32 V DC) via backplane

Diagnostics: Open-loop detection (< 3.8 mA), short-circuit protection (< 24 mA)

Power Consumption: ≤ 8 W from rack backplane

Environmental:

Operating Temp: 0 °C to +70 °C

Storage Temp: –40 °C to +85 °C

Humidity: ≤ 95 % RH non-condensing

Product function

Bently Nevada 84140-01 maps digital measurements from the 3500 backplane into isolated 4–20 mA loops. Precision terminations and isolation prevent ground-loop errors. Monitors outputs for open/short faults, reporting status to the system interface.

Application Areas

DCS/PLC Integration: Feeding real-time parameters via Bently Nevada 84140-01 into control analog inputs

Historian & Recorder Links: Driving chart recorders with current loops

Remote Monitoring: Loop-powered signals for long cable runs

Skid-Mounted Panels: Embedded analog outputs in skids with Bently Nevada 84140-01 Hazardous-Area Installations: Zone 2/Div 2 panels featuring Bently Nevada 84140-01 to eliminate external barriers