Why Pressure transmitters
Some of the key benefits
Air pressure sensors in Air Handling Units (AHUs) can provide several benefits in HVAC (Heating, Ventilation, and Air Conditioning) systems.
- Airflow control and balancing: Air pressure sensors can measure the pressure differentials across various sections of the AHU, such as filters, coils, and ductwork. This data can be used to monitor and control airflow rates, ensuring that the AHU is operating at the desired airflow levels. By maintaining proper airflow rates, air pressure sensors can help to optimize the performance of the HVAC system, prevent overloading of components, and ensure efficient operation.
- Energy efficiency: Proper airflow control is essential for energy-efficient operation of AHUs. Air pressure sensors can help optimize airflow rates, avoiding unnecessary overpressure or underpressure conditions that can result in energy waste. By maintaining the right pressure differentials, air pressure sensors can help to minimize fan energy consumption, reduce the load on HVAC components, and contribute to overall energy savings.
- Indoor air quality: Accurate airflow control is critical for maintaining proper indoor air quality (IAQ) in buildings. Air pressure sensors can help ensure that AHUs are providing adequate ventilation rates and preventing air leakage. By monitoring pressure differentials, air pressure sensors can detect potential issues, such as filter clogging or ductwork leaks, and trigger alarms or notifications for prompt maintenance, helping to maintain clean and healthy indoor environments.
- System protection: Air pressure sensors can provide valuable data for protecting HVAC system components. For example, they can detect abnormal pressure differentials that may indicate issues such as clogged filters, blocked ducts, or fan failures. By alerting operators to potential problems, air pressure sensors can help prevent costly damage to AHU components and extend their lifespan.
- Remote monitoring and diagnostics: Many modern air pressure sensors are equipped with communication capabilities, allowing for remote monitoring and diagnostics. This can enable real-time monitoring of AHU performance, troubleshooting, and predictive maintenance. Remote access to air pressure sensor data can help HVAC technicians quickly identify and address issues, leading to improved system uptime, reduced downtime, and increased operational efficiency.
Our Solutions
AHU (Air Handling Unit)
Demand-controlled ventilation (DCV)
AHU (Air Handling Unit)
Air handling units are used in nearly all new and renovated buildings to ensure high-quality indoor air. In addition to providing clean indoor air, HK Instruments’ easy-to-use devices enable cost-efficiency and the effortless installation and monitoring of air handling units. In comparison with analogue devices, modern Modbus devices require less wiring, which reduces the cost of cabling work.
Clean room application
Demand-controlled ventilation (DCV)
AHU (Air Handling Unit)
Pressure differences between rooms in hospitals, laboratories and other demanding environments can be controlled through pressurization and depressurization to ensure favorable working conditions and the cleanliness of products. Designed to monitor pressure differences between rooms, differential pressure transmitters measure the difference in pressure between the clean room and the outdoor air.
Demand-controlled ventilation (DCV)
Demand-controlled ventilation (DCV)
Demand-controlled ventilation (DCV)
Ventilation is boosted when a large number of people are in the building. Ventilation solutions of this type are needed in schools, offices, sports halls and hotels – that is, in all locations where it is important to maintain good air quality, even if utilization rates vary greatly. In addition to ensuring good air quality, demand-controlled ventilation reduces energy consumption in buildings.
Commercial building solutions
Commercial building solutions
Demand-controlled ventilation (DCV)
Passive outdoor temperature and light sensors are reliable in use and reduce the need for cabling. These sensors predict the need for heating in a building and control outdoor lighting sensibly and energy-efficiently. Liquid pressure transmitters can be used to monitor district heating and cooling, as well as detecting any leaks and preventing water damage. Surveillance of the differential pressure across the building envelope takes care of the health of the building and prevents serious structural problems.
Roof extraction unit
Commercial building solutions
Roof extraction unit
In apartment buildings, roof extraction units are often necessary to ensure clean, high-quality indoor air. Ventilation in apartment buildings is often set at a default level, even though the load varies. This results in a significant loss of energy. Ventilation applications in apartment buildings are easy to implement by using HK Instruments’ measurement devices. Our cost-efficient solutions do not need to be supported by an expensive building automation system.
AHU Modbus solution
Commercial building solutions
Roof extraction unit
Our main products are also available with Modbus communication. When using a bus solution, you need less wires in cables and fewer input points in the controller. As a result, you will save in costs of the devices and installation.
This makes it possible to measure four different types of data.
With the Modbus solution you only need 4 wires as opposed to 23 wires when using the traditional solution.
Our Products
DPT-R8
DPT-Flow
DPT-Flow
Field adjustable, multi-range differential pressure transmitters for air
DPT-R8 series differential pressure transmitters are engineered for building automation in the HVAC/R industry. The most technologically advanced transmitters on the market measuring static and differential pressure, with field selectable units, range and output, all in a single device.
DPT-Flow
DPT-Flow
DPT-Flow
DPT-Flow is a flow transmitter that provides a new and easy way to measure the flow rate on centrifugal fans.
One device is suitable for a range of different fan types. It also provides an easy way to measure flow rate in a duct system. The device is supplied with an optional FloXactTM averaging measurement probe.
The DPT-Flow is designed for air handling units to measure the air flow on centrifugal fans.
DPT-Ctrl
DPT-Flow
DPT-Ctrl
DPT-Ctrl is a multifunctional PID controller with differential pressure or air flow transmitter.
DPT-Ctrl enables to control constant pressure or flow of fans, VAV systems or dampers. Its two lined display shows the direction of the control output and the measurement value at the same time. The optional autozero function eliminates the need for periodic manual zero point calibration.
DPT-Dual
DPT-Ctrl-MOD
DPT-Ctrl
Field adjustable, multi-range differential pressure transmitter with two pressure sensors for air
DPT-Dual series differential pressure transmitters are engineered for building automation in the HVAC/R industry. DPT-Dual is a technologically advanced transmitter measuring static and differential pressure from two different points, with field selectable units, range and output, all in a single device.
DPT-MOD
DPT-Ctrl-MOD
DPT-Ctrl-MOD
Multifunctional differential pressure transmitters with air flow measurement and Modbus communication
DPT-MOD is a multifunctional transmitter for measuring volume flow, velocity, and static and differential pressure. The measurements can be read and the configuration done via Modbus communication. DPT-MOD requires less wiring than the traditional 3-wire transmitters because multiple devices can be connected on serial line. DPT-MOD can also be used with several different measurement probes such as FloXact™ or pitot tube, and air dampers.
DPT-Ctrl-MOD
DPT-Ctrl-MOD
DPT-Ctrl-MOD
Multifunctional PID controller with differential pressure or air flow transmitter and Modbus communication.
DPT-Ctrl-MOD enables to control constant pressure or flow of fans, VAV systems or dampers. In addition, the controller is fully programmable via Modbus.
The DPT-Ctrl-MOD includes an Input terminal that enables the reading of multiple signals such as temperature or control relays over Modbus. The Input terminal has one input channel designed to accept 0−10 V, ntc10k, Pt1000, Ni1000/(-LG), and BIN IN (potential free contact) signals.
