Cleanroom Control and Environmental Monitoring Systems

Digital Differential Pressure Gauge

A digital wall gauge that presents low differential pressure in clear engineering units and adds programmable alarm, relay and communication functions.

High-Visibility Numeric Display
Programmable Alarm Limits
Multiple Pressure Units
Relay and Analog Outputs

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Product Introduction

The digital differential pressure gauge integrates a low-range sensor, bright numeric display and local alarm logic in one wall-mounted device. Users can select pressure units and view signed room-to-reference differential without converting an analog scale. Programmable high and low limits drive color change, buzzer or relays, while analog and digital outputs share the measured value with monitoring systems. A flush or surface mounting arrangement allows the display to remain readable at entrances and service corridors.

Key Features

Large signed digits remain readable from normal corridor viewing distance.

Selectable pressure units support Pa and other commonly used engineering scales.

Independent high and low thresholds drive local color and remote relay alarms.

Analog or network retransmission avoids installing a second room pressure sensor.

Customer Product Concerns

Room users need an unambiguous pressure value and alarm state without interpreting a small pointer scale.

A small analog scale is difficult to read from the corridor.Large backlit digits present the signed pressure value at a glance.

Staff misinterpret different pressure units used across rooms.A selectable and clearly displayed unit keeps each reading explicit.

The gauge shows pressure but cannot trigger a remote alarm.Programmable relays and analog output send the same condition to the monitoring system.

A brief door opening leaves the display in alarm long after closure.Adjustable delay and hysteresis distinguish transient doorway disturbances from sustained loss.

Typical Applications

Cleanroom entrance pressure displayAirlock status indicationIsolation room monitoringFilter differential indication

Technical Parameters

Typical materials and dimensions for a digital cleanroom differential pressure gauge are listed below.

Core Material	Silicon MEMS sensor with white polycarbonate bezel, tempered display lens and FR-4 electronics
Panel Thickness	45-90 mm gauge depth
Effective Width	120-200 mm front bezel width
Maximum Length	Up to 240 mm bezel height
Steel Facing Thickness	0-1.0 mm; optional stainless rear mounting plate
Core Density	1180-1220 kg/m³ for polycarbonate bezel components
Thermal Conductivity	0.19-0.22 W/(m·K) for polycarbonate housing material
Surface Finish	Smooth white bezel with black glass display window and green-red status backlight
Joint Type	Flush or surface wall mount with rear pressure ports and removable power-signal terminal
Customization	Available based on the intended application and operating environment.

Available Options

Surface or flush mountingGreen-red status backlightRelay and analog outputsBACnet or Modbus communication

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