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3500/77M 140734-07

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The Bently Nevada 3500/77M 140734-07 Cylinder Pressure Monitor provides real-time monitoring of reciprocating compressor cylinder pressures, delivering accurate measurements and configurable alarms across up to four channels.
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Technical specifications for 3500/77M 140734-07

  • Manufacturer:
    Bently Nevada
  • Part Number:
    3500/77M 140734-07
  • Product Family:
    3500 System
  • Signal:
    Accepts 1 to 4 channels of Bently Nevada approved positive voltage 3rd-party pressure transducers (psia)
  • Frequency Response:
    0 to 5.5 kHz on all configured pressure channels
  • Pressure Accuracy:
    Within ± 0.5% of pressure transducer full-range (9.5 volts: From +0.5 to +10.0 volts) @ +25°C (77º F); Within ± 1.0% of pressure transducer full-range (9.5 volts: From +0.5 to +10.0 volts) over –30 °C to +65 °C (22 ºF to 150 ºF)
  • Input Impedance I/O:
    50 kΩ
  • Power Consumption:
    7.8 watts with transducer supplies at full load
  • Output Impedance:
    550 Ω
  • 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
  • Weight:
    0.82 kg
  • Estimated shipping dimensions:
    2.5x25.5x24.5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The Bently Nevada 3500/77M 140734-07 Cylinder Pressure Monitor is a 4-channel monitor designed to accept input from Bently Nevada approved positive voltage pressure transducers (psia). It conditions these signals to produce precise pressure measurements for reciprocating compressors and compares them to user-programmable alarm thresholds to ensure machinery protection.

Each channel is capable of measuring up to eight variables, with primary parameters for a single cylinder chamber including Discharge Pressure, Suction Pressure, Maximum Pressure, Minimum Pressure, and Compression Ratio. Operators can configure Alert setpoints for each active measured variable and Danger setpoints for any two measured variables, providing flexible monitoring and protection strategies tailored to specific compressor configurations.

The monitor delivers high-accuracy pressure readings, within ±0.5% full-scale at 25°C (77°F) and ±1.0% full-scale over –30°C to +65°C (–22°F to 150°F). It supports a 0 to 5.5 kHz frequency response, 50 kΩ input impedance, and 550 Ω output impedance, ensuring signal integrity and reliable data acquisition from high-performance transducers.

The 3500/77M 140734-07 also supplies power to transducers with +23.0 ± 0.8 VDC and 24.5 mA current limiting per channel. Designed for harsh industrial environments, the module operates over a temperature range of –30°C to +65°C (–22°F to +150°F), can be stored between –40°C and +85°C (–40°F to +185°F), and withstands 95% non-condensing humidity. Its 7.8-watt power consumption at full load balances high-performance signal conditioning with energy efficiency.
Alternative Names
35OO/77M 14O734-O7 3500/77M I40734-07 3500/77M 14073407 35OO/77M 14O734O7 3500/77M I4073407
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the frequency response of the 3500/77M 140734-07?
0 to 5.5 kHz on all configured pressure channels.
What is the 3500/77M 140734-07 pressure accuracy?
±0.5% full-scale at 25°C (77°F) and ±1.0% full-scale over –30°C to +65°C (–22°F to 150°F).
How long does it take to ship and is there a warranty?
Units are typically in stock and can be shipped within 1–3 business days, and all units come with a 1-year warranty.
What are the 3500/77M 140734-07 operating and storage temperature ranges?
Operating: –30°C to +65°C (–22°F to +150°F); Storage: –40°C to +85°C (–40°F to +185°F).