Product Core Brief
- Model: 170190‑01E
- Brand: BENTLY
- Series: FieldMonitor 1701 System
- Core Function: Provides dual‑channel galvanic isolation for transducer signals, permits proximity probes and seismic sensors to operate within Class 1 Div 1 hazardous zones without external zener barriers.
- Product Type: Dual‑Channel Galvanic Isolator Module for 1701/06 ITB
- Key Specs: 2 isolated signal channels | Works exclusively with Isolator Terminal Base (1701/06) | Non‑zener isolation design ⚠️ EOL — limited stock remaining
Product Introduction
BENTLY 170190‑01E slides into a slot of the 1701/06 Isolator Terminal Base. It breaks galvanic paths between safe‑area monitor electronics and field‑side hazardous‑area transducers. It eliminates the need for external barrier enclosures and dedicated intrinsically‑safe ground wiring.
This unit pairs with 170180‑series transducer I/O modules to support proximity probes, accelerometers and velocity transducers. It maintains full signal bandwidth for dynamic vibration measurements —though your mileage may vary if you install it inside a standard non‑isolated 1701/05 terminal base, where it will not function.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Channel Count | 2 galvanically isolated signal channels |
| Compatible Host | Only 1701/06 Isolator Terminal Base (ITB); will not operate in 1701/05 base |
| Supported Field Transducers | Eddy‑current proximity probes, accelerometers, velocity transducers |
| Isolation Type | Galvanic isolation, non‑zener intrinsic‑safety design |
| Hazardous‑Zone Rating | Allows field‑side sensors in Class 1 Div 1 / Zone 0‑1 locations |
| Mounting | Single‑slot insertion into ITB; DIN‑rail via terminal base assembly |
| Hot‑Swap Support | Yes (1701/06 ITB compliant) |
| Operating Ambient Temperature | ‑40 °C to +70 °C |
| Relative Humidity | 5‑95 %, non‑condensing |
| Module Power Draw | 25 mA max, supplied by ITB backplane |
| Physical Weight | 0.29 kg |
| Country of Origin | United States |
BENTLY 170190‑01E
BENTLY 170190‑01E
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Source traceability, serial number anti‑counterfeit check, visual inspection (no corrosion/scratches). Check edge connector pins for bending or wear.
- Live Functional Test: Power‑on self‑check, ITB backplane comms handshake, continuous load run >24 hrs with temp logging. Capture LED status snapshots every two hours.
- Electrical Parameter Test: Insulation resistance (500 V Megger, >10 MΩ), ground continuity. Flag any resistance drift below threshold.
- Firmware Verification: Read/record firmware version, photograph DIP switch/jumper settings. Well, technically it supports per‑channel fault reporting, but only on ITB firmware v3.2+.
- Final QC & Packaging: Anti‑static bag seal, QC Passed label with date. Matching terminal hardware bagged alongside the unit.
Replacement Pitfall Guide
❗ Firmware Mismatch: The unit will suppress channel fault diagnostics if host 1701/06 ITB firmware falls below minimum revision. Older firmware only passes raw sensor signals without isolator health flags.❗ DIP Switch / Jumper Misconfiguration: Factory defaults rarely match field settings. Pay close attention to channel‑side signal jumpers on the module edge connector.❗ Terminal / Cable Incompatibility: This hardware cannot work inside 1701/05 standard terminal bases. Cross‑reference wiring drawings before running field cabling into classified hazardous zones.❗ Power Supply Mismatch: Recalculate total ITB power with 20% headroom. Adding multiple isolator plus transducer‑I/O modules can push marginal 24 VDC supplies over their continuous rating.❗ ESD Damage: Use anti‑static mat; caution in dry environments. Static discharge can degrade galvanic isolation circuitry with no visible physical damage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- Scan cycle: 10 ms (simulated load, 2 active isolated transducer input channels)
- Comms throughput: 500 kbps (FieldMonitor Flexbus proprietary backplane bus)
