Excellent PLC
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Overview
The Bently Nevada 3500/77M-04-00 143737-01 Pressure I/O Module is a high-performance 4-channel I/O module used in conjunction with the 3500/77M Recip Cylinder Pressure Monitor. It is designed for critical machinery condition monitoring, enabling real-time pressure measurements from reciprocating compressor cylinders through Bently Nevada-approved third-party pressure transducers. This model supports external terminations.
Product Applications
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Reciprocating compressor pressure monitoring
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Industrial rotating machinery health monitoring
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Oil & gas process optimization
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Petrochemical machinery diagnostics
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Preventive maintenance systems
Product Advantages
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Supports high-speed signal acquisition up to 5.5 kHz
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Delivers up to 8 pressure-related measured variables per channel
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Enables advanced diagnostics (compression ratio, rod load, etc.)
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Accurate signal conditioning with ±0.5% precision at room temperature
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Supports external terminations for flexible installation
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Fully compatible with the 3500 system for machinery protection
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 3500/77M-04-00 (I/O Module P/N 143737-01) |
| Channels Supported | 1 to 4 channels |
| Signal Type | Positive voltage pressure transducers (psia) |
| Frequency Response | 0 to 5.5 kHz |
| Input Impedance | 50 kΩ |
| Power Consumption | 7.8 W (at full transducer load) |
| Measured Variables | Discharge, Suction, Max, Min Pressure, Compression Ratio, Peak Rod Compression/Tension, Rod Reversal |
| Pressure Accuracy (25°C) | ±0.5% of transducer full-range |
| Pressure Accuracy (-30°C to 65°C) | ±1.0% of transducer full-range |
| Transducer Supply | +23.0 ±0.8 VDC, 24.5 mA limit per channel |
| Buffered Outputs | 1 coaxial output per channel, short-circuit protected |
| 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% RH, non-condensing |
| Dimensions (I/O Module) | 241.3 x 24.4 x 99.1 mm |
| Weight (I/O Module) | 0.20 kg |
Frequently Asked Questions (FAQ)
1. What is the primary function of the 3500/77M-04-00 module?
It is used to acquire and condition cylinder pressure signals for reciprocating compressors.
2. How many channels does this module support?
It supports up to four independent pressure input channels.
3. Can this module be used with non-Bently transducers?
Only with Bently Nevada-approved third-party pressure transducers.
4. Does this model support internal termination?
No, this specific model (143737-01) supports external termination only.
5. What types of pressure measurements can it provide?
It provides discharge, suction, max, min pressure, compression ratio, and rod load variables.
6. What is the frequency response of the input signal?
The frequency response is 0 to 5.5 kHz for all pressure channels.
7. What is the power supply output for the transducers?
+23.0 ± 0.8 VDC with a current limit of 24.5 mA per channel.
8. How accurate is the pressure signal conditioning?
±0.5% of full-scale at 25°C, ±1.0% over the entire operating range.
9. What type of connector does it use for output?
It has short-circuit protected coaxial buffered outputs for each channel.
10. What are the environmental limits for this module?
It operates between -30°C to +65°C and stores between -40°C to +85°C.
Related Bently Nevada Models (Same Series or Function)
| Model Number | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/77M-03-00 | Pressure I/O with Internal Termination | 241.3 x 24.4 x 99.1 | 0.20 |
| 3500/42M-01-00 | Proximitor Seismic Monitor I/O Module | 241.3 x 24.4 x 99.1 | 0.22 |
| 3500/44M-02-00 | Aeroderivitive Vibration Monitor I/O | 241.3 x 24.4 x 99.1 | 0.25 |
| 3500/45-01-00 | Position Monitor I/O Module | 241.3 x 24.4 x 99.1 | 0.21 |
| 3500/25-01-01-00 | Keyphasor Module | 241.3 x 24.4 x 99.1 | 0.23 |
| 3500/22M-01-01-00 | Transient Data Interface | 241.3 x 24.4 x 99.1 | 0.24 |
Popular Bently Nevada Models
| Model Number | Description | Dimensions (mm) | Weight (kg) |
|---|---|---|---|
| 3500/20-01-01-00 | Frame Interface Module | 241.3 x 24.4 x 99.1 | 0.20 |
| 3500/15-05-01-00 | Power Supply Module | 241.3 x 24.4 x 99.1 | 0.50 |
| 3500/42M-01-00 | Proximitor Seismic Monitor | 241.3 x 24.4 x 99.1 | 0.22 |
| 3500/93-01-00-00 | Display Interface Module | 241.3 x 24.4 x 99.1 | 0.27 |
| 330104-00-06-10-11-00 | 3300 XL 8 mm Proximity Probe | Probe-style | 0.07 |
| 330180-91-CN | 3300 XL Proximitor Sensor | Module style | 0.16 |
