Product Core Brief
- Part Number: 3500/62-03-00
- Brand: Bently Nevada (Baker Hughes)
- Series: Bently Nevada 3500 / 3500/62 Process Variable Monitor
- Core Function: 2-channel process variable monitor that accepts 4–20 mA process signals and converts them into monitored values for temperature, pressure, flow, level, or other process parameters within the 3500 machinery protection system.
- Product Type: 3500/62 Process Variable Monitor
- Key Specs: 2-channel monitor | external termination I/O | 4–20 mA input | CSA/NRTL/C approval (03) | no agency approval suffix (00) | legacy/obsolete product
- Condition: New Original / New Surplus
Product Introduction
Bently Nevada 3500/62-03-00 is a 2-channel Process Variable monitor for the Bently Nevada 3500 machinery protection system. It receives standard 4–20 mA process signals from field transmitters and continuously compares the converted process values against user-programmable alarm setpoints to provide process-related protection for rotating equipment.
The ordering code follows the 3500/62-AXX-BXX format: “03” in position A indicates a 2-channel Process Variable monitor with external termination I/O; “00” in position B indicates no agency approval suffix. The module is typically supplied as a front panel assembly with a corresponding external termination I/O module.
The 3500/62 accepts 4–20 mA inputs from process transmitters such as temperature, pressure, flow, or level transmitters. Each channel can be independently configured via the 3500 Rack Configuration Software with engineering unit scaling, alarm setpoints, alarm delays, and sensor fault detection. The monitor continuously compares measured values against configured alarm and danger setpoints and drives the 3500 alarm and relay system accordingly.
The 3500/62 is part of the broader 3500 monitor family and is commonly used in applications where process conditions—such as lube oil pressure, cooling water temperature, seal gas pressure, or bearing temperature—must be integrated into the machinery protection system alongside vibration, position, and speed monitoring. It works with the 3500/22M TDI or 3500/20 RIM for rack communication and can interface with System 1 software and external DCS/PLC systems via the 3500/92 communication gateway.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Part Number | 3500/62-03-00 |
| Product Type | 2-Channel Process Variable Monitor |
| Channels | 2 channels |
| I/O Type | 03 — External termination I/O |
| Approval Suffix | 00 — No additional agency approval suffix |
| Input Signal | 4–20 mA (from process transmitters) |
| Configurable Functions | Temperature, pressure, flow, level, or other 4–20 mA process variables |
| Communication | Via 3500 rack backplane to TDI/RIM |
| Status | Legacy / Obsolete |
Note: The -03-00 configuration, exact front panel P/N, external termination I/O assembly number, input scaling range, and sensor fault detection behavior should be verified from the physical label and Bently Nevada 3500/62 documentation.
Quality Control Process (DYNAMIC GENERATION)
- Label and part number verification. We confirm the module reads 3500/62-03-00 and matches the 3500/62 Process Variable monitor family.
- Configuration code check. We verify -03 corresponds to external termination I/O and -00 indicates no additional agency approval suffix.
- Front/rear panel assembly check. We confirm the front panel and external termination I/O module are correctly paired.
- Physical inspection. The front panel, terminal blocks, connectors, LEDs, and mounting hardware are checked for damage or corrosion.
- Function family verification. We confirm it is not mislabeled as a temperature-only monitor (3500/60/61), vibration monitor, relay, or communication module.
- Final packaging. After inspection, the module is anti-static bagged and foam-packed for shipment.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Do not confuse it with 3500/60/61 temperature monitors. The 3500/62 accepts 4–20 mA process signals, while 3500/60/61 accept RTD/thermocouple inputs directly.
❗ Verify the I/O type. The “-03” option is external termination. Do not substitute with internal termination variants without confirming wiring compatibility.
❗ Confirm the approval suffix. “00” indicates no additional agency approval suffix. If CSA/NRTL/C or ATEX/IECEx certification is required, verify the correct approval code for your installation.
❗ Check channel configuration. Each channel must be independently configured for the correct engineering units, scaling, and alarm setpoints matching the connected transmitter.
❗ Verify 4–20 mA loop wiring. External termination I/O requires correct loop wiring; reversed polarity or open loops will cause sensor fault indications.
❗ Confirm TMR/paired configuration. If used in redundant arrangements, verify slot placement and voting logic match the existing configuration.
❗ Handle as ESD-sensitive equipment. Use anti-static handling procedures during removal, installation, and storage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| Bently Nevada 3500/62-03-00 | Bently Nevada 3500/62-03-00 | Direct | Same part number; verify I/O and approval. |
| Bently Nevada 3500/62-03-00 | Bently Nevada 3500/62 (other I/O variants) | Needs Adaptation | Different I/O termination; verify wiring compatibility. |
| Bently Nevada 3500/62 | 3500/60/61 | Not Compatible | 3500/60/61 accept RTD/thermocouple; 3500/62 accepts 4–20 mA. |
| Bently Nevada 3500/62 | 3500/40M/42M | Not Compatible | Vibration/displacement monitors; different input types. |
| Bently Nevada 3500/62 | 3500/92 | Not Compatible | Communication gateway; not a process variable monitor. |
Benchmark highlights
- Bently Nevada 3500/62 2-channel Process Variable monitor.
- -03-00 configuration: external termination I/O, no additional agency approval suffix.
- Accepts 4–20 mA inputs from process transmitters (temperature, pressure, flow, level).
- Each channel independently configurable with engineering unit scaling and alarm setpoints.
- Integrates process conditions into the 3500 machinery protection system.
- Works with 3500/22M TDI or 3500/20 RIM for rack communication.
- Compatible with System 1 software and 3500/92 gateway for DCS/PLC integration.
- Legacy product; suitable for existing Bently Nevada 3500 system maintenance and like-for-like replacement.
