
Product Description
This Bently Nevada 3500/77M 140734-07 reciprocating cylinder pressure monitor uses advanced sensor technology and microprocessors to provide high-precision pressure measurement results.
Its rugged design enables it to operate stably in harsh industrial environments, while also having IP65-level dust and water resistance.
The built-in high-precision sensor and fast response time enable the monitor to capture pressure changes in a timely manner, thereby ensuring the safety of the production process.
In addition, it also supports 4-20mA analog signal output for easy integration with various control systems.
Whether in the oil, chemical or power industry, this monitor can provide you with reliable performance and stable monitoring results.
Easy installation and low maintenance cost make it an indispensable and important tool in the field of industrial automation.
Technical specifications
Part Number: 33500/77M 140734-07
Manufacturer: Bently Nevada
Power Consumption:6.5 watts, typical
Input Impedance:25 k Ω
Max Switched Current:3 A
Dimensions (H x W x D):10.24 in x 0.787 in x 10.04 in
Weight:1.1 lbs
Operating Temperature Range:-40°C to +70°C
Communication Protocol:MODBUS RTU, Ethernet/IP

Functional characteristics
Bently Nevada 3500/77M (model: 140734-07) is a dual-channel phase/speed module in the 3500 series monitoring system. It is designed for speed and phase measurement of rotating machinery. The core is used for speed (RPM) monitoring, overspeed protection, and generating key phase reference signals and synchronous sampling triggers required for vibration analysis. It can adapt to various input types such as eddy current probes and magnetoelectric sensors.
This module supports two independent speed/phase sensor inputs and can be configured for redundant monitoring or signal acquisition at different measurement points. The speed measurement range covers 0 to hundreds of thousands of RPM, and the phase resolution is ±1°; the key phase function provides vibration signal phase reference pulse output, supports rising/falling edge trigger configuration, and programmable overspeed threshold outputs alarm or shutdown signals through relays, and has dynamic delay compensation to ensure phase measurement accuracy. The hardware is compatible with a variety of sensors such as 8mm eddy current probes and magnetoresistive probes. The input signal range is -1V to -24V, and the output includes 4-20mA speed analog, relay alarm and key phase TTL pulse. It supports hot plugging and communication through the 3500 frame backplane.
As a 3500 system component, it interacts with the frame controller through TDIXnet or Modbus protocol and uploads data to DCS/PLC. The speed/phase trend and alarm status can be visualized in the System 1 software. It is typically used in overspeed protection and vibration analysis of steam turbines/gas turbines, phase monitoring fault diagnosis of compressors/pump groups, and speed synchronization and dynamic balance monitoring of generators.
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Guarantee & Returns
1. All products we sell are 100% New original Package.in good condition and will be examed before they are shipped.
We will try our best to avoid any quality problems.
2. We offer 12 month warranty after receiving parcels. If there are some workmanship or material defects with the products,
please contact us firstly, we will exchange it or offer other solutions for you to make a choice.
3. The shipping and handling charge is not refundable and customer should be responsible for all the charges of unreasonable
returning and reshipping. All return items must be in good condition. They must under resalable condition. Man-made defects
are not guaranteed, such as broken, scratched and so on. Thanks for understanding and cooperation!
4. Terms of Payment:We accept T/T
Contact Vicky immediately-- sales7@apterpower.com/+8618030175807
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