BENTLY 3500/70M 176449-09 Single slot four channel pressure monitoring module

Description

BENTLY 3500/70M 176449-09 is a single slot, four channel pressure monitoring module that is part of the industry-leading 3500 series. Its main function is to measure and condition pressure signals from sensors, providing accurate data for alarm generation, process control, and predictive maintenance.

3500/70M 176449-09

Each channel can receive analog inputs from high-temperature pressure sensors (such as strain gauges or piezoelectric sensors) and process them through configurable signal conditioning algorithms. Engineers can define parameters such as low-pass filtering, peak detection, and rate of change limitation to separate relevant pressure trends from noise. This module supports monitoring of static pressure (such as steady-state pipeline pressure) and dynamic pressure (such as pulsation during pump operation), and the output format can be directly integrated into the human-machine interface (HMI), monitoring and data acquisition (SCADA) system, or 3500 series backplane.

For system integrators, the 3500/70M 176449-09 is compatible with other 3500 series modules, supports plug and play, simplifies rack setup, and reduces wiring complexity. This module complies with API 670 and ISO 13849 standards, ensuring reliability in safety critical applications, while firmware updates are made through BENTLY’s AMS Suite software, enabling functionality to be enhanced over time.

3500/70M 176449-09

Main features and advantages:
High temperature compatibility: Supports input from sensors with rated temperatures up to 482 ° C (900 ° F), suitable for extreme environments such as gas turbine exhaust systems or refinery furnaces.
Configurable signal conditioning: Each channel can independently set a low-pass filter (0.1-1000 Hz), peak hold interval, and alarm dead zone, achieving precise tuning from slow pressure ramp to high-frequency pulsation analysis.
Redundant design: Dual power supplies and isolated channels ensure continuous operation even if one channel fails, which is crucial for 24/7 uninterrupted monitoring.
Real time diagnosis: Built in self checking function monitors the health status of sensors, cable integrity, and module temperature, and shortens the mean time to repair (MTTR) by marking before problems affect measurement.
Scalable output: Provides 4-20 mA analog signals for local control systems and digital data through the 3500 series backplane, supporting integration with predictive analysis tools to predict pressure related faults.

3500/70M 176449-09

Technical specifications:
Model 3500/70M 176449-09
Brand BENTLY
Type Four Channel Pressure Monitoring Module
System compatibility 3500 series mechanical protection system
Input range 0-100 mV (from sensor), configurable pressure range up to 10000 psi
Signal conditioning low-pass filter (0.1-1000 Hz), peak detection, rate of change limitation
Accuracy ± 0.1% of full scale
Power supply 24 VDC (10-30 VDC range), dual isolated input
Working temperature -40 ° C to 85 ° C
Storage temperature -55 ° C to 125 ° C
Vibration resistance 5 g (5-2000 Hz, IEC 60068-2-6)
Certified API 670, CE, UL, CSA, IEC 61508 (SIL Level 2 compatible)
Dimensions 48.3 mm (height) x 177.8 mm (width) x 254 mm (depth)
Weight 0.9 kg
Output 4-20 mA analog signal per channel, providing digital status through the backplane

Contact Us
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3500/70M 176449-09

Application areas:
Taking natural gas processing plants as an example, compressors and pipelines operate under high pressure, and even small pressure fluctuations may indicate serious problems such as valve wear or corrosion. The 3500/70M 176449-09 module can interface with high-temperature pressure sensors to measure pressure changes in real-time, providing engineers with actionable data for adjusting processes or triggering safety protocols.
In the steam turbine system, this module monitors steam pressure to ensure efficient power generation, while marking any abnormal conditions that may cause blade damage or boiler instability. For hydraulic system manufacturers, such as heavy machinery or aerospace component manufacturers, the module’s ability to track rapid pressure peaks (e.g. during sudden stops or starts) is crucial in preventing catastrophic failures of hydraulic cylinders or pumps.

Related products:
BENTLY 3500/22M – A mechanical protection module used for keyshifters and speed measurements, which helps to correlate pressure peaks with rotational events such as pump cavitation at high speeds.
BENTLY 3500/32- Four channel displacement module, used in conjunction with 3500/70M 176449-09 module, can monitor mechanical stress in containers or pipelines caused by pressure fluctuations.
BENTLY 3500/92- Communication Gateway Module, which can integrate pressure data into cloud platforms (such as Microsoft Azure) for real-time analysis and remote monitoring.
BENTLY 3500/05- Rack power supply, ensuring stable power supply to 3500 series racks, is crucial for maintaining measurement accuracy during voltage fluctuations.
BENTLY 3500/60M – Temperature monitoring module, used in conjunction with pressure data, can identify thermal expansion effects or overheating caused by excessive pressure.
BENTLY 3500/15- Relay module, triggers safety actions (such as valve closure and pump shutdown) based on pressure alarms from the 3500/70M 176449-09 module.

Installation and maintenance:
Installation instructions and maintenance best practices
Before installation:
Use shielded cables to connect sensors and maintain a distance of 30 centimeters from high-voltage wiring to reduce electromagnetic interference (EMI).
Before installation, calibrate the pressure sensor with a certified reference instrument to ensure zero offset and linearity within ± 0.05% of the full range.
During debugging, configure the alarm setpoints of the module to be consistent with the mechanical equipment manufacturer’s recommendations (such as 80% of the maximum allowable pressure as a warning and 95% as a shutdown).
maintain:
Perform loop checks using pressure calibrators every quarter to verify the accuracy of signals output from sensors to modules.
Check the sensor installation points annually for corrosion or leakage, especially in high humidity environments.
Update firmware every six months through BENTLY AMS Suite to access new features such as advanced surge detection algorithms.
Clean module vents and connectors every six months in dusty or corrosive environments to prevent signal degradation.

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