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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification Value |
| Channel Capacity | 6 continuous, independently programmable channels |
| Input Signal Options | +4 to +20 mA current loop or +1 to +5 VDC voltage signals |
| Input Impedance | 82.5 Ω (Current mode) / 1 MΩ (Voltage mode) |
| Measurement Accuracy | Within ±0.33% of full-scale typical (±1.0% maximum) |
| Power Consumption | 7.0 W typical |
| Update Rate | 100 ms per channel |
| Transducer Power Output | +24 VDC available per channel to power external transmitters |
| Analog Recorder Outputs | +4 to +20 mA proportional current outputs per channel (0 to 600 Ω load) |
| Operating Temperature | −30 °C to +65 °C (−22 °F to +150 °F) |
| Main Module Dimensions | 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Weight | 0.91 kg (2.0 lb) |
Product Introduction & Supply Chain Strategy
The Bently Nevada 3500/62 is a 6-channel process variable monitor designed to integrate standard industrial transmitter signals—such as pressure, flow, level, and suction head—into the 3500 Machinery Protection System. It continuously compares process inputs against programmed alert and danger thresholds to drive automated system trip logic before process excursions damage rotating equipment.
Stocking this unit as a New Surplus capital spare eliminates lead-time vulnerability during critical plant outages or unexpected channel failures. Sourcing genuine New Surplus ensures original OEM manufacturing quality, zero backplane pin insertion wear, and uncompromised internal analog signal processing for a 10–15 year operational service life.
- 3500/62
- 3500/62
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Execute lockout/tagout procedures on safety-instrumented system trip outputs tied to the 3500 rack relay modules.
- Put on an anti-static wrist strap properly bonded to cabinet earth ground.
- Open 3500 Rack Configuration Software and save a full backup of the active system settings (
.350file). - Record channel input modes (+4 to +20 mA vs +1 to +5 VDC), engineering unit scaling, and rear I/O card terminal pinouts.
Stage 2: Removal
- Unfasten the upper and lower captive screws on the existing 3500/62 faceplate.
- Unlatch both ejector handles simultaneously to disengage the rear edge connectors from the 3500 backplane.
- Slide the main module out along the card guide slots and immediately place it into an anti-static shielding bag.
Stage 3: Installation (Clone & Seat)
- Verify the replacement 3500/62 module matches the hardware revision of the removed unit.
- Align the circuit card edges with the designated guide rails in the 3500 rack slot.
- Push the card in firmly until it seats into the backplane connector, pivot the ejector handles shut, and hand-tighten the captive retention screws.
Stage 4: Power-On & Testing
- Re-apply 24 VDC system power to the 3500 rack power supplies.
- Confirm the front-panel OK LED illuminates solid green and the TX/RX LED flashes during backplane communication.
- Inject a calibrated 4–20 mA current loop signal across input channels to verify scaling and alarm setpoint responses before clearing software bypasses.
Firmware/Software Versions & Upgrade Notes
- Recommended Firmware: Firmware Revision 1.10 or later (configured using 3500 Rack Configuration Software v4.0 or higher).
- Compatibility Notice: Ensure the software configuration matches the installed rear I/O module type (e.g., Process Variable Internal Termination I/O, External Termination I/O, or Isolated I/O). Selecting an incorrect I/O card type in the software project will trigger a hardware configuration mismatch fault.
- Upgrade/Downgrade Risk Warning: Never update card firmware while the monitored machine is running. Downloading new firmware resets the 3500/62 internal microprocessors, forcing current outputs to 0 mA and opening the system OK relay, which can trigger an accidental unit trip if the slot is not placed in software bypass.
Frequently Asked Questions (FAQ)
Is this Bently Nevada 3500/62 module original and completely unused?
Yes. We supply exclusively Brand New Surplus units in original OEM anti-static packaging. These modules originate from verified surplus stock, feature zero backplane pin insertion marks, and undergo complete functional verification before shipment.
Why choose New Surplus over lower-cost refurbished process variable cards?
Refurbished process cards often contain degraded analog-to-digital converters and worn electrolytic capacitors from continuous high-temperature panel exposure. A failure in a process protection loop can allow unmonitored pump cavitation or pressure spikes; spending 20% to 30% more for New Surplus guarantees OEM precision and reliable trip execution.
Can the 3500/62 power external 2-wire transmitters directly?
Yes. The 3500/62 provides dedicated +24 VDC transmitter supply voltage on its rear I/O terminals, allowing direct connection to standard 2-wire +4 to +20 mA field transmitters without requiring external loop power supplies.
How do I replace a faulty 3500/62 without stopping the turbine or process?
Open the 3500 Rack Configuration Software, navigate to the 3500/62 slot parameters, and enable Software Bypass for that slot. This prevents the monitor from firing system trip relays during physical removal and card installation.
Does replacing this card require downloading configuration data?
Yes. Hardware parameter settings are maintained in the 3500 System Monitor, but you must connect using 3500 Rack Configuration Software to verify sensor calibration curves, unit scaling, and alarm setpoint logic for the new card.
What warranty is included with this New Surplus process variable card?
Each New Surplus Bently Nevada 3500/62 module includes a full 1-year replacement warranty, a verified serial number tag, and a complete pre-shipment QC inspection report.
