For the open house at one of our customers, we built a VAV demo unit in which various Sentera product groups are incorporated to work together as one solution. To explain the complete operation of this installation step by step, we have made a detailed video which you can watch on our Youtube channel. Check out the full article for more information.
As a leading manufacturer of control solutions for HVAC and ventilation systems, Sentera offers a wide range of products that can be used individually or combined as a complete solution.
CO2 based damper control Especially for the open house at one of our customers, we built a VAV demo unit in which various Sentera product groups are incorporated to work together as one solution. This solution is based on our new ACT-H-125 valves which are controlled by means of an analog signal from our DCMFF-2R CO2 duct sensors. When the CO2 level increases, the sensor will open the valve to allow more fresh air to be supplied. Several valves, each with their own sensor, can be used in the same installation. To guarantee a constant supply of fresh air (regardless of how many valves are open), the fan is controlled by an electronic EVS fan speed controller, which in turn is controlled by a DPS differential pressure controller. When opening the valve(s), the differential pressure will drop and the differential pressure controller will increase the fan speed via the electronic fan speed controller to guarantee the necessary flow rate. Differential pressure based fan speed control Conversely, when closing the valve(s) (when the CO2 level drops) the differential pressure will increase and the DPS differential pressure controller will decrease the fan speed via the electronic EVS fan speed controller to bring the flow back down to the required level. All parameters of the Sentera products used can be adjusted according to the application or requirements via the Sentera Modbus converter and the free 3SModbus software. To explain the complete operation of this installation step by step, we have made a detailed video which you can watch here. To obtain an increase in the CO2 level into the ventilation duct in order to demonstrate the operation of the installation, CO2 is added by means of an aerosol. The following Sentera products were joined into one solution in this installation:
ACT-H-125 round motorized control valve: round motorized control valve for 125mm diameter air ducts. The damper blade position can be set via a 0-10 V signal or via Modbus RTU communication. The minimum and maximum position and many other parameters can also be adjusted in the Modbus registers.
DCMFF-2R intelligent CO2 duct sensor: air duct sensor that measures CO2, temperature and relative humidity. It combines these 3 measured values in one intelligent output to which you can directly connect the EC fan or control valve.
DPSPF-1K0-2 differential pressure controller 1 kPa with display: high resolution differential pressure and airflow controller with display, 0-1000 Pa range, integrated PI control and K-factor, analogue / modulating output 0-10 VDC / 0-20 mA / PWM, Modbus RTU communication.
EVS-1-15-DM 1,5 A electronic fan speed controller with analogue input and Modbus: the EVS controls the speed of single-phase voltage-controllable motors. The technology used is phase angle control (Triac technology). They have Modbus RTU communication and an input to remotely start/stop the motor. The minimum and maximum speeds are internally adjustable via a trimmer. The output voltage to the motor is within the range between the set minimum output voltage (30-70% of the supply voltage) and the supply voltage and can be controlled via the analogue input (0-10 VDC / 0-20 mA) or via Modbus RTU.
RDPU-HMU HVAC controller: central HVAC controller with built-in touch screen. Depending on the firmware that is loaded in the device, there are different applications. In this case it is the HMU Home Monitoring Software. This allows you to monitor the air quality in every room of your building. This solution is extremely suitable for a private home, but also for a school or (public) building.
SIGWM internet gateway: An internet gateway for Sentera products. It connects to the internet via the local Wi-Fi network. This makes setting up your Sentera network easier. It also offers the possibility to access your installation remotely. Connect and monitor or control your compatible HVAC products remotely. You can log data and receive alarms. Define different users and create your personal dashboard.
SEPS8-24-40 switching power supply: supply voltage: 85-264 VAC / 50-60 Hz, output voltage: 24 VDC / 40 W / 1.67 A, IP65, connections via spring clamp connectors or via RJ45 connectors. Power over Modbus (PoM) compatible. Protected against overvoltage and overcurrent.
MDB-M-6 Modbus RTU distribution box with 6 channels: both the 24 VDC supply voltage and the Modbus RTU communication are distributed over the 6 RJ45 connectors. MDB-M/6 is compatible with Sentera sensors, sensor controllers, HVAC controllers and speed controllers with Modbus RTU communication.
All products work together as a complete VAV solution that can be monitored and set up remotely via Senteraweb. If you have any questions about this setup after watching this video, or if you would like more information regarding other solutions, do not hesitate to contact one of our employees.
Recent news
14/03/2023
What is the difference between VAV and CAV? What does Constant Pressure Control involve?When desgning a ventilation system, we often come across the terms "VAV", "CAV" and "Constant Pressure Control". In this article I would like to explain what these terms mean exactly, when which option is used and what you need to pay attention to when designing and adjusting an automated ventilation system.>>>
21/02/2023
New Sentera product catalogueSince 1997, Sentera has been a leading manufacturer of fan speed controllers for ventilation systems. However, over the past decades, Sentera has also invested heavily in the development of control systems, sensors and Modbus network equipment. All these individual devices are excellent examples of Belgian top technology. However, combined in our Sentera Solutions, they form high-performance control systems for the most diverse ventilation applications.>>>
26/01/2023
CO poisoning in parking garagesCarbon monoxide (CO) is a colourless, odourless and tasteless gas that mixes with normal air. It remains present for a long time and does not break off spontaneously. Inhaled CO is absorbed into the blood through the lungs, just like oxygen. This disrupts the transport of oxygen to the cells and causes a lack of oxygen.>>>
19/01/2023
What are 3-speed control switches and how do they operate?Many motors today are designed to be as flexible as possible when it comes to speed. A three-speed motor has three field windings and a rotor, all in one housing. Each field winding is designed to spin the rotor at a different speed. This enables one motor to be used for a number of different applications. A three-speed motor usually has four wires, the three speed wires and the common wire. Power is supplied to the common wire and any one of the speed wires for a certain speed.>>>
09/01/2023
Sensors for demand based ventilation systemsWhich sensors should I use in my building? This is the question that is regularly asked these days with most people spending up to 90 % of their time indoors. Due to Corona and the ever-improving insulation of our buildings, the importance of good ventilation is becoming increasingly clear. Along with this advancing insight, additional questions arise.>>>
Website is not supported on Internet Explorer! Please use Chrome, Firefox, Edge or other browser.
.jpg "What is the difference between VAV and CAV? What does Constant Pressure Control involve?")
.jpg "New Sentera product catalogue")
.jpg "CO poisoning in parking garages")
.jpg "What are 3-speed control switches and how do they operate?")
.jpg "Sensors for demand based ventilation systems")
