E8 Ventilation Diagnostics Sdn. Bhd.

Performance Monitoring & Preventive Maintenance

Supply & Installation Performance Monitoring Instruments.

  • Differential Pressure

    Static pressure across resistance such as hood, fitting such as elbows and air cleaning device need to be monitored to be within the maximum range so that the system flow rate will be within its peak performance / baseline measurement. Increase of differential pressure about the set limit will increase the overall system static pressure which is inverse to system flow rate. The differential pressure system is available in both analog and digital (transmitters with display and SCADA interphase). We design and establish differential pressure monitoring and control system by establishing the performance monitoring to meet the acceptable range of operation.

  • Velocity and Flow Rate

    The design basis of ventilation is purely based on flow rate of the system. As such the flow rate must be monitored as apart of system’s performance monitoring. The need for preventive maintenance can be monitored via the reduction in flow rate as the resistance across the system rises. Permanently fixed S type pitot tube on a laminar flow plane can be hooked up unto a pressure transmitter to provide the velocity at that point. Multiplying the cross section with the introduction of actual air density can provide an accurate air flow rate monitoring system as a stand alone measurement with display or to be interphase into SCADA system. We provide total solution in monitoring system flow rate at any point of the ventilation system.

  • Fan Speed

    A duty point of a ventilation system fan will be based on flow rate and system static pressure. The fan will rotate at its rated speed to meet the demand of the duty point. Fan drive system failure such as bearing, belt, pulley, shaft, impeller and etc will affect fan speed. The drop it fan speed will diminish the adequacy of the system as the duty point demand cant be met. We establish thorough inspection and service of the fan speed to ensure the operation meets the duty point.

1. Differential Pressure Monitoring

Ensure optimal ventilation system performance with precise differential pressure monitoring. Static pressure across resistance points such as hoods, elbows, and air cleaning devices must stay within an acceptable range to maintain peak system flow rate. Exceeding the set differential pressure limit increases overall system static pressure, reducing flow efficiency.

Specifications:

• Pressure Range: ±100Pa to ±10,000Pa

• Overload Protection: Up to 80KPa

• Accuracy: ±1% Full Scale

• Response Time: 0.5s/1.0s/2s/4s

• Output Signal Options: 4-20mA, 0-5V, 0-10V, RS-485 (Modbus RTU protocol)

• Power Supply: 10-30VDC

• Protection Grade: IP54

• Operating Temperature: -10°C to 60°C

• Applications: LEV and GEV systems, clean rooms, static pressure monitoring, air cleaning systems

Features:

• Digital pressure acquisition with temperature compensation

• SCADA-compatible output options

• Long-term stability and durability

• Compact design with an LCD display (optional)

• Micro-pressure core for high sensitivity

Available in analog and digital models, our differential pressure monitoring solutions help maintain airflow efficiency, prevent unexpected downtime, and ensure compliance with industry standards.

2. Velocity & Flow Rate Monitoring

A well-functioning ventilation system depends on accurate flow rate measurements. By continuously monitoring flow rate, resistance buildup can be detected early, allowing for preventive maintenance.

Specifications:

• Measurement Range: 0 - 70 m/s airflow velocity

• Accuracy: ±(0.2m/s + 3% of measured value)

• Pressure Measurement: ±0-5 kPa

• Flow Volume Measurement: Up to 999,999 m³/h

• Response Time: <1s

• Power Supply: 24VDC

• Output Signal: RS-485 (Modbus RTU)

• Operating Temperature: -20°C to 300°C

• Humidity Tolerance: 0-99% RH

Features:

• S-Type Pitot Tube for continuous velocity measurement

• Real-time pressure and flow data acquisition

• LCD backlit display (optional)

• SCADA integration for remote monitoring

• Manual zero calibration for accuracy

By calculating air velocity and cross-sectional area with real-time air density adjustments, our flow monitoring solutions ensure precise airflow control at any system point.

3. Fan Speed Monitoring & Maintenance

Fan speed is critical in ventilation systems, as it directly affects system static pressure and flow rate. Any drop in fan speed due to mechanical failures—such as bearings, belts, pulleys, shafts, or impellers—can compromise system efficiency.

Specifications:

• Monitoring Method: Real-time RPM tracking via sensor feedback

• Output Signal: 4-20mA, RS-485 (Modbus RTU)

• Power Supply: 10-30VDC

• Accuracy: ±0.2% Full Scale

• Operating Temperature: -10°C to 60°C

• Data Integration: SCADA & BMS Compatible

Features:

• Automated failure detection for motor, belt, and bearing issues

• Real-time fan performance tracking to ensure duty point efficiency

• Custom alerts and reporting for predictive maintenance

• Compatible with variable frequency drives (VFDs) for efficiency optimization

Our expertise ensures your ventilation fans operate at their rated speed, meeting required airflow demands while preventing breakdowns and performance issues.

Comprehensive Monitoring Solutions for Your Ventilation System

Our tailored performance monitoring instruments provide real-time data, preventive alerts, and SCADA integration to optimize differential pressure, airflow velocity, and fan performance.

Contact us today to enhance system efficiency, reduce energy costs, and ensure uninterrupted ventilation performance.