3500/77M 176449-07 Bently Nevada Pressure Monitor

Bently Nevada 3500/77M 176449-07 Pressure Monitor

Key Technical Specifications

• Manufacturer: Bently Nevada.
• Model Number: 3500/77M 176449-07 – Pressure Monitor with Internal/External Termination I/O.
• Input Channels: Accepts 1 to 4 channels of positive voltage pressure transducers (psia).
• Scale Factor Ranges: 95,000 mV/psi (100 psia) to 950 mV/psi (10,000 psia).
• Frequency Response: 0 to 5.5 kHz on all configured pressure channels.
• Pressure Accuracy: ±0.5% of full-range @ +25°C; ±1.0% over -30°C to +65°C.
• Input Impedance: 50 kΩ (Internal/External Termination Cylinder Pressure I/O).
• Power Consumption: 7.8 Watts with transducer supplies at full load.
• Buffered Output: Front coaxial connectors (one per channel), 550 Ω impedance.
• Transducer Power Supply: +23.0 ± 0.8 Vdc with 24.5 mA current limiting.
• Operating Temperature: -30°C to +65°C (-22°F to +150°F).
• Storage Temperature: -40°C to +85°C (-40°F to +185°F).
• Humidity: 95% non-condensing for harsh industrial environments.
• Physical Dimensions (Monitor): 241.3 mm x 24.4 mm x 241.8 mm (1 full-height front slot).
• Weight: Monitor module 0.91 kg; I/O module 0.20 kg.

Measured Variables & Signal Conditioning

• The 3500/77M 176449-07 calculates Cylinder Pressure, Discharge Pressure, and Suction Pressure.
• It also provides Maximum Pressure, Minimum Pressure, and Compression Ratio.
• Peak Rod Compression, Peak Rod Tension, and Degree of Rod Reversal are included.
• Frequency response covers 0 to 5.5 kHz for dynamic pressure analysis.
• Accuracy remains stable across the full industrial temperature range.

Installation & Rack Integration

• Install the 3500/77M 176449-07 in a 3500 series rack using one full-height front slot.
• Mount the corresponding I/O module in the rear slot (one per channel).
• Connect pressure transducers to the front panel BNC connectors (coaxial).
• Use shielded cables for transducer signals to maintain signal integrity.
• Ensure ambient temperature stays within -30 °C to +65 °C for reliable operation.

Environmental & Mechanical Durability

• This system operates reliably in high-humidity conditions (95% non-condensing).
• Short-circuit protection on all buffered outputs prevents damage during installation.
• Wide storage temperature range from -40 °C to +85 °C.
• Robust design suitable for reciprocating compressor monitoring in oil & gas, and power generation.

Package Contents (Each Unit)

• 1 x Bently Nevada 3500/77M 176449-07 Monitor Module.
• 1 x Internal/External Termination Cylinder Pressure I/O Module (rear slot).
• Installation and configuration guide (hardcopy).
• Front panel label set and mounting hardware.
• No certificate or warranty documentation included in the box.

Shipping & Logistics

• We ship worldwide via FedEx, UPS, or DHL express services.
• All orders dispatch within 5 business days from our warehouse.
• Products are brand new, in original factory packaging.
• Real-time tracking number provided upon shipment.

Frequently Asked Questions (FAQ)

• Q: Is the 3500/77M 176449-07 compatible with 4-20 mA pressure transducers?
  A: No, it accepts positive voltage inputs (0.5 to 10.0 Vdc) from Bently Nevada approved 3rd-party pressure transducers.
• Q: What is the pressure accuracy over temperature?
  A: Within ±1.0% of full-range from -30°C to +65°C, and ±0.5% at +25°C.
• Q: Can I use this monitor with a 1000 psia transducer?
  A: Yes, select the appropriate scale factor (9,500 mV/psi) for 1000 psia range.
• Q: What is the frequency response for dynamic pressure measurements?
  A: The response is 0 to 5.5 kHz, suitable for reciprocating compressor cylinder analysis.
• Q: Does this module support rod load calculations?
  A: Yes, it provides Peak Rod Compression, Peak Rod Tension, and Degree of Rod Reversal.
• Q: Do you have this item in stock?
  A: Yes, we maintain regular stock of the 3500/77M 176449-07 for immediate shipment.
• Q: What is your return policy?
  A: We accept returns within 30 days of delivery for unused, original-condition units.
• Q: How long does delivery take?
  A: We ship within 5 working days; delivery time depends on your location and chosen courier (FedEx, UPS, DHL).

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner: NexAuto Technology Limited