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Industrial Automation

Industrial Automation


Differential Pressure Station


Precision measurement of temperature and humidity around production lines and equipment.

Precision measurement of differential pressure inside and outside of clean room or booth.
Clearly visualize differential pressure shifts at all times.

ZN-DPX21-S Features 1

Ultra wide-range precision measurement

ZN-DPX21-S Features 2

This ensures a range of minus 500 to plus 500 Pa and diffential pressure accuracy of plus/minus 3%. With more accurate differential pressure control, clean room environments can be effectively maintained.

Built-in hybrid logging engine

ZN-DPX21-S Features 3

Data can be logged to the unit (SD Card) while communicating with PC (or PLC) via LAN. Even in the event of network failure, the unit will continue to record data. Production technology divisions can centrally control management via network while manufacturing floors can localize control using SD cards.

Easily construct a wide range of control systems

ZN-DPX21-S Features 4

Built-in alarm output makes the station an effective part of all kinds of control systems.
● Positive pressure level alert for clean environments
● Automatic control of air conditioning level based on differential pressure level

Simple visualization software available as a standard

Simple, user-friendly PC software* is available as a standard feature (Multi Data Viewer Light: Setup tool, logging tool, and SD Viewer ES). Unit setup and data logging can be possible via LAN network. Also, logged data can be easily displayed in a waveform graph.

* Download the PC Software Multi Data Viewer Light from the following OMRON website (

With back-up using commercially available AAA batteries, operation continues even during sudden power outage

ZN-DPX21-S Features 6

With built-in battery backup feature, LAN transmission and logging operation won’t stop even in the event of power outage or sudden disconnection.
* In network mode, operation continues for approximately two hours on batteries alone. However, battery life will vary depending on the measurement environment, battery type, or battery performance.

Positive pressure level in a clean booth is easily checked using this Differential Pressure Station.

ZN-DPX21-S Features 7

Calibration service also available

ZN-DPX21-S Features 8

A Certificate of Calibration can be issued upon request. (It is necessary to ship the product back to OMRON.)
To obtain a Certificate of Calibration at time of purchase, please select a type that includes a Certificate of Calibration.
As the sensor head and station are digitally connected, this calibration service is available only for the sensor head.
∗ The calibration service does not include repairs or adjustments.