ENTEK 6682 / EC6682 – Axial Position Monitor | Enpac / ENTEK Vibration Monitoring Platform
Engineering Background
The ENTEK 6682 (also catalogued as EC6682) is a dedicated axial position monitoring module developed by ENTEK — a pioneer in continuous machinery protection and condition monitoring systems. Designed for integration into the ENTEK Enpac and rack-based monitoring architectures, this module provides real-time axial displacement measurement critical for protecting rotating machinery such as steam turbines, compressors, and large centrifugal pumps.
Product Positioning
The 6682 / EC6682 targets reliability engineers and OEM integrators who require certified, rack-compatible axial position monitoring with direct compatibility to ENTEK’s signal conditioning and relay output ecosystem. It is a direct replacement and upgrade path for legacy ENTEK axial channel cards, offering drop-in compatibility with existing wiring and rack infrastructure.
Complete Technical Specifications
| Manufacturer | ENTEK (Rockwell Automation / IRD Mechanalysis lineage) |
| Part Number | 6682 / EC6682 |
| Module Type | Axial Position Monitor Card |
| Measurement Parameter | Axial shaft displacement (thrust position) |
| Sensor Compatibility | Eddy-current proximity probes (standard ENTEK / API 670 compatible) |
| Input Channels | Single-channel axial position input |
| Output Signal | 4–20 mA analog output; relay contact outputs for Alert / Danger |
| Alert / Danger Setpoints | Field-configurable via front-panel or system software |
| Power Supply | Rack-supplied ±15 VDC / +5 VDC (ENTEK standard backplane) |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Form Factor | Single-slot rack card (ENTEK standard rack) |
| Weight | Approx. 500 g (module only) |
| Standards Compliance | API 670 (Machinery Protection Systems) compatible design |
| Certifications | CE marked; suitable for industrial environments |
Proven Application Environments
- Steam & Gas Turbines — Continuous axial thrust monitoring to prevent catastrophic bearing failure
- Centrifugal Compressors — Axial position protection in API 670-compliant machinery protection systems
- Large Centrifugal Pumps — Thrust bearing wear detection and early-warning alarming
- Gearboxes & Expanders — Shaft position trending for predictive maintenance programs
- Power Generation Plants — Integration into DCS/SCADA via 4–20 mA loop for historian data capture
- Petrochemical & Refinery — Continuous online monitoring in hazardous-area adjacent installations
Engineering Advantages
- API 670 Alignment — Designed to meet the intent of API 670 for machinery protection, ensuring compatibility with international plant standards
- Drop-In Rack Compatibility — Direct replacement for existing ENTEK axial channel cards; no rewiring or rack modification required
- Dual-Setpoint Relay Logic — Independent Alert and Danger relay outputs allow tiered response: operator alarm before automatic shutdown
- 4–20 mA Analog Output — Universal signal for integration with any DCS, PLC, or data historian without additional signal conditioning
- Field-Configurable Setpoints — Eliminates factory recalibration; setpoints adjusted on-site to match machine-specific clearances
- Proven Long-Term Reliability — ENTEK modules are documented in continuous service exceeding 15+ years in critical rotating machinery applications
System Architecture & Signal Flow
The EC6682 operates within the ENTEK rack-based monitoring architecture as follows:
- Proximity Probe (eddy-current, API 670 compliant) → installed at machine axial target
- Extension Cable + Driver → signal conditioned to standard -18 VDC gap voltage range
- EC6682 Module Input → receives conditioned probe signal via rack backplane or front-panel BNC
- Internal Signal Processing → converts gap voltage to calibrated displacement (mils or mm)
- Analog Output (4–20 mA) → transmitted to DCS/SCADA historian or control system
- Relay Outputs → Alert relay energizes at first setpoint; Danger relay energizes at second setpoint for machine trip
Sourcing & Quality Verification
Konmask sources ENTEK 6682 / EC6682 modules through verified industrial surplus and authorized distribution channels. Every unit offered undergoes the following pre-shipment process:
- Visual inspection for physical damage, corrosion, and component integrity
- Label and part number verification against ENTEK documentation
- Functional power-on check where test equipment is available
- Anti-static packaging with humidity indicator card
- Certificate of conformance available upon request for critical installations
Customers requiring factory-new units or Rockwell Automation certified repair should contact our technical team for current availability and lead times.
Procurement Process
- Confirm Part Number — Verify 6682 or EC6682 against your existing rack documentation or ENTEK system manual
- Request Quote — Contact [email protected] or call +0086 19859288691 for current pricing, lead time, and stock confirmation
- Purchase Order — Submit PO with delivery address; we support T/T bank transfer, PayPal, and trade-term arrangements (EXW/FOB Shenzhen)
- Shipment & Documentation — Units shipped with packing list, commercial invoice, and optional datasheet/COC
- Technical Support — Post-delivery installation guidance available via email or video call
Technical FAQ
Q: Is the EC6682 compatible with non-ENTEK racks?
A: The EC6682 is designed for ENTEK standard rack backplanes. Use in third-party racks requires custom power supply and signal interface — contact our engineers for feasibility assessment.
Q: What probe gap voltage range does the 6682 accept?
A: The module is calibrated for standard eddy-current probe systems operating in the -18 VDC gap voltage range, consistent with API 670 proximity probe systems.
Q: Can setpoints be changed without removing the card?
A: Yes. Setpoints are field-configurable via front-panel adjustment or ENTEK system software without rack removal.
Q: Do you provide a warranty?
A: Konmask offers a 90-day functional warranty on all modules. Extended warranty and exchange programs are available — inquire at time of order.
Q: What is the difference between 6682 and EC6682?
A: EC6682 is the ENTEK catalog designation; 6682 is the legacy part number. Both refer to the same axial position monitor module and are interchangeable in ENTEK rack systems.
Q: Can you provide a datasheet or wiring diagram?
A: Yes. Contact [email protected] with your request and we will provide available ENTEK documentation.
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Contact: [email protected] | +0086 19859288691
