The DPS52 is an adjustable micro differential pressure switch capable of detecting minuscule changes in pressure due to its compact size and proven design. The switching set point can be easily adjusted in the field without the need for a manometer, using the adjustment knob and the built-in calibrated visual scale.
Anwoll's micro pressure switch is equipped with a clear protective cover that not only prevents the adjustment knob from being moved involuntarily but also provides class IP54 protection. These DPS52 micro pressure switches combine precision, ease of adjustment, and durable protection.
High Sensitivity for Precise Detection: The DPS52 micro pressure switch is designed to sense extremely small changes in differential pressure. With its advanced sensing mechanism and compact design, this micro pressure switch provides high precision and reliability.
Ideal for HVAC and Air Control Systems: This micro pressure switch performs exceptionally well in HVAC systems, air conditioning units, and ventilation control setups. Anwoll's micro pressure switches can accurately detect airflow changes or filter blockages, ensuring optimal system performance and energy efficiency. For broader selection and installation guidance, learn how an HVAC pressure sensor supports different ventilation and air-control applications.
Automatic Reset Function: The DPS52 micro pressure switch features a built‑in automatic reset function. This eliminates the need for manual resetting, increases user convenience, and enhances long‑term reliability in continuous monitoring environments.
Suitable for Clean and Controlled Environments: Thanks to its reliable design and IP54 protection rating, Anwoll's micro pressure switch is widely used in sensitive environments such as hospital wards, laboratories, and clean workshops. These micro pressure switches help maintain consistent air pressure balance and ensures environmental safety and hygiene.
| Pressure difference range | 20–200 Pa to 5000 Pa |
| Process connection | φ6.4mm for tube connection |
| Terminal block | 6.35*0.8 AMP standard flat insert |
| Tests/Admissions | UL60730 |
| Electrical overview | |
| Switching load | 1.5A (0.4A) at 250 VAC |
| Resistive(inductive) | 0.1A at 24VDC |
| Initial contact resistance | <100 milliohms |
| Installation arrangement | |
| Installation torque | 0.8N*M |
| Factory set | Vertical, pressure connections facing downwards |
| Operating conditions | |
| Medium | Air, non-flammable or non-hazardous gases |
| Temperature | Medium: −20 °C to +85 °C (−4 °F to +185 °F) Ambient: 40 °C to +85 °C (−40 °F to +185 °F) |
| IP grade | IP54 (with cover) |
The DPS52 can help detect blocked air filters, insufficient airflow, fan failure, and abnormal duct pressure conditions. When the selected differential pressure condition is reached, its electrical contact can activate an alarm, interlock, or other control function.
Connect the high-pressure port upstream of the filter and the low-pressure port downstream. As the filter becomes clogged, the pressure drop increases, and the DPS52 can signal when maintenance is required. This supports condition-based filter replacement instead of relying only on a fixed schedule.
Yes. When installed across a fan or between suitable points in an air duct, the DPS52 can confirm whether the expected pressure difference is established after the fan starts. If sufficient airflow is not detected, the switch can trigger an alarm or equipment interlock.
Choose the DPS52 when you need a simple on/off signal for an alarm, interlock, or equipment control. A differential pressure transmitter is more suitable when the control system needs continuous pressure readings, remote monitoring, data trending, or variable control.
Please provide the application, expected normal differential pressure, required switching point, monitored medium, electrical control requirements, and installation environment. ANWOLL can then recommend a suitable model and configuration for your system.
