Industrial Wireless Bidirectional Differential Pressure & Temperature Sensor
See a Clogging Filter
Before It Chokes the Line.
Any Span. Both Directions.
A loading filter, a failing damper, or a room losing its pressure envelope shows up as a change in differential pressure long before anyone notices the airflow. Measure the difference across two ports, positive or negative, wirelessly, and see the trend before the failure.
No software to install. No cloud accounts to create. Tube it in, power on, monitor.
01
Tap Both Sides
Connect PORT 1 and PORT 2 to the two points you want to compare, across a filter, a damper, or between two rooms. The sensor reads the difference and its direction.
02
Mount & Power
Run on a single D-cell battery or the external power option. The IP65 main enclosure handles dust and washdown environments.
03
Wireless Mesh
A self-forming, self-healing wireless mesh reaches up to 2 miles line-of-sight, with multi-hop routing across your facility.
04
Monitor & Act
Browser dashboards, threshold email alerts, and CSV export. Forward readings to AWS, Azure, or any MQTT broker. Catch the differential-pressure trend early.
Tube in, power, and monitor, no software licenses and no cloud account required. Your data stays on your network.
Built for Atrium
Complete IoT Platform
A Full IoT Solution, No Development Team Required
The Atrium Gateway isn’t just a data receiver. It’s a complete industrial IoT platform with dashboards, alerts, reporting, and built-in apps. Point your differential-pressure sensors at it, open your browser, and go, your data stays on your network.
Build Dashboards in Your Browser
Drag-and-drop widgets let you build custom differential-pressure views for any audience, facilities techs on the floor, maintenance managers, or process engineers. Every dashboard auto-refreshes and supports fullscreen mode for wall-mounted displays.
Gauge widgets for real-time differential pressure across filters and rooms
Line graphs with multi-sensor overlays and configurable time ranges
Status cards showing each sensor’s current reading and battery
Fullscreen mode for TV displays on the plant floor
Custom date/time range selection with quick presets (1H, 6H, 24H, 7D, 30D)
Add, edit, and rearrange widgets without writing code
Widgets, Custom Dashboard
Set Thresholds. Get Notified. Automate Responses.
Configure threshold-based triggers on differential pressure or battery. When a reading crosses your limit, Atrium fires email notifications, logs the event, and can actuate relay outputs to start a spare blower or sound an alarm, all without writing a single line of code.
Differential-pressure triggers with configurable thresholds and reset points
Global alert templates, apply rules across device groups automatically
Automations link triggers to physical actions (relay control, notifications)
Real-time status dashboard shows OK / TRIGGERED state for every rule
Email notifications sent instantly when thresholds are breached
Combine multiple triggers into complex automation recipes
Alerts & Automations
Triggers
+ New Trigger
Name
Sensor
Metric
Cond.
Threshold
Reset At
Current
Filter Bank Clogging
Filter Bank ΔP
Diff. Pressure
Above
8.00 PSI
6.00 PSI
6.80 PSI
Cleanroom Depressurized
Cleanroom 3 ΔP
Diff. Pressure
Below
0.05 PSI
0.08 PSI
0.03 PSI
Dust Collector Restriction
Dust Collector ΔP
Diff. Pressure
Above
5.00 PSI
4.00 PSI
4.20 PSI
Sensor Low Battery
Filter Bank ΔP
Battery
Below
2.80 V
3.40 V
3.40 V
Actions
+ New Action
Name
Triggers
Actions
Status
Manage
Cleanroom Pressure Alert
Cleanroom Depressurized(Cleanroom 3 ΔP)MET
Email(trigger+clear) facilities@acmemfg.com
TRIGGERED
EditDelete
Filter Change Alert
Filter Bank Clogging(Filter Bank ΔP)
Email(trigger+clear) maintenance@acmemfg.com
OK
EditDelete
Sensor Battery Notice
Sensor Low Battery(Filter Bank ΔP)
Email(on trigger) facilities@site.com
OK
EditDelete
Automated Email Reports
Schedule recurring reports delivered straight to stakeholders’ inboxes. Fleet summaries, sensor group roll-ups, and alert digests, all generated automatically and emailed on your chosen cadence.
Fleet Summary, status overview of all connected sensors
Sensor Group Reports, focused data for specific zones
Alert Digest, summary of all triggered and resolved alerts
Daily, weekly, or monthly delivery schedules
Multiple recipients per report
PDF and HTML format options
Scheduled Reports
+ New Report
NAME
TYPE
FORMAT
SCHEDULE
RECIP
Alert Digest Test
Alert Digest
PDF+CSV
Mon at 8:00 AM
repor…
SIM Custom SQL Export
Custom SQL Query
CSV
Mon at 8:00 AM
repor…
SIM Daily Alert Digest
Alert Digest
CSV
Daily at 7:00 AM
repor…
SIM Diff-Pressure Group
Sensor Group
PDF+CSV
Mon at 8:00 AM
repor…
SIM Weekly Fleet Summary
Fleet Summary
PDF
Mon at 8:00 AM
repor…
Industrial Apps, Pre-Built and Ready
Atrium ships with purpose-built industrial applications that turn raw sensor data into actionable intelligence. No coding, no configuration wizards, select an app, assign your sensors, and start getting insights immediately.
App
Description
Status
Productivity Monitor
Machine uptime & utilization tracking
AVAILABLE
OEE Calculator
Availability × Performance × Quality scoring
COMING SOON
Energy Monitor
Power consumption tracking & cost analysis
COMING SOON
Environmental Monitor
Temperature, humidity & air quality tracking
COMING SOON
Action
Task management triggered by sensor events
COMING SOON
More apps added with firmware updates, no additional cost
Built-in Apps
Productivity Monitor
Runtime tracking & utilization
OEE Calculator
Coming Soon
Energy Monitor
Coming Soon
Environmental
Coming Soon
Connect to Anything, Or Nothing
Atrium works as a fully self-contained system, but when you need to integrate, Node-RED is built in and ready. Push data to cloud platforms, databases, SCADA systems, or custom APIs, all configured through a visual flow editor.
Node-RED pre-installed with sensor data nodes ready to use
Push to AWS, Azure IoT Hub, or any MQTT broker
REST API for custom integrations and data export
SQLite database with direct query access
Modbus TCP/RTU support for PLC and SCADA integration
VPN and Cloudflare Tunnel support for secure remote access
Industrial differential-pressure monitoring that runs locally. No cloud dependency. No software license.
Bidirectional Differential
Two ports measure the pressure difference between them, and read it in both directions, positive or negative. See exactly how much a filter, damper, or duct is restricting flow, and which way.
A Range for Every Job
Pick the span that fits the job — ±0.15 PSI (±4.2 inH₂O), ±0.30 PSI (±8.3 inH₂O), ±5 PSI (±139 inH₂O), or ±15 PSI (±416 inH₂O), with roughly 18 more special-order options. Resolution scales with the range you choose, reaching up to 0.01 PSI on the low-range sensors for tight room-pressure work.
On-Board Temperature
Every reading ships with temperature to ±0.3°C at 0.01°C resolution, so you can correlate a pressure shift with an air- or process-temperature change on the same trend.
2-Mile Wireless Mesh
Long-range self-healing wireless mesh reaches up to 2 miles line-of-sight, with 128-bit AES encryption, across large or multi-building facilities.
Multi-Year Battery Life
Runs up to 5 years on a single D-cell battery with real-time battery-status reporting. An external power option is also available for permanent installs.
OTA Firmware Updates
Update firmware wirelessly across your fleet over the wireless mesh network. No climbing ladders, no removing sensors from service.
Up to 0.01 PSI, depending on range (finest on low-range sensors)
Ports
Two ports (PORT 1 high / PORT 2 low)
Compatible Media
Dry, non-corrosive, non-ionic gases (wetted parts: silicon, Pyrex, RTV silicone)
Temperature Measurement
On-Board Temperature
Reported alongside pressure
Accuracy
±0.3°C
Resolution
0.01°C
Temperature Range
-25°C to +85°C (-13°F to 185°F)
Wireless & Network
Protocol
Long-range self-healing wireless mesh
Frequency Bands
868 MHz / 900 MHz / 2.4 GHz
Band class
Sub-GHz (868 / 900 MHz) — sub-gigahertz radio travels farther and penetrates walls and equipment far better than higher-frequency Wi-Fi or Bluetooth
Range
Up to 2 miles line-of-sight (~1000 ft dense urban)
Network Capacity
Up to 256 sensor nodes per network
Encryption
128-bit AES
Cloud Platforms
AWS, Azure, MQTT
Power & Battery
Battery
D-cell with Supercap
Battery Life
Up to 5 years
Power Options
Battery only, or external power connector + battery
Battery Status
Real-time reporting
Enclosure & Mounting
Mounting
Wall-mount or magnet-mount
Enclosure
IP65 (main enclosure only); NEMA 1/2/4/4X/12/13; UL-508
Dimensions
3.54″ W × 4.52″ L × 2.16″ H
Antenna
On-board
Ratings & Compliance
Certifications
CE/RED, RoHS, FCC, IC, C-Tick, Anatel, IDA
Ordering
±0.15 PSI, battery-powered
PR55-59DP_AMS5812-0001-D-B-1
±0.15 PSI, external-power
PR55-59DP_AMS5812-0001-D-B-1_PWR
±0.30 PSI, battery-powered
PR55-59DP_AMS5812-0003-D-B-1
±0.30 PSI, external-power
PR55-59DP_AMS5812-0003-D-B-1_PWR
±5 PSI, battery-powered
PR55-59DP_AMS5812-0050-D-B-1
±5 PSI, external-power
PR55-59DP_AMS5812-0050-D-B-1_PWR
±15 PSI, battery-powered
PR55-59DP_AMS5812-0150-D-B
±15 PSI, external-power
PR55-59DP_AMS5812-0150-D-B_PWR
Special order, battery-powered
PR55-59DP_SPECIAL
Special order, external-power
PR55-59DP_SPECIAL_PWR
Applications
Where This Sensor Works
Anywhere the difference between two pressures tells you something before airflow does.
Filter & Strainer Clogging
Watch differential pressure climb across a filter or strainer to change it on condition, not on a fixed calendar, and never on a blowout.
On-conditionchange on ΔP, not the calendar
Cleanroom & Room Pressurization
Verify a cleanroom, isolation room, or lab stays positively or negatively pressurized against adjacent spaces, with an alert the moment the envelope slips.
Ultra-low rangesfor room pressurization
HVAC Duct & Filter Banks
Track static and differential pressure across coils, dampers, and AHU filter banks to keep airflow balanced and spot loading early.
Bidirectional± either way
Air Flow & Velocity
Paired with a pitot tube or orifice plate, differential pressure gives you flow and velocity across ducts and process lines.
±0.3°Ctemp on every reading
Dust Collector & Baghouse
Monitor the pressure drop across baghouse or cartridge media to time pulse-cleaning and catch a torn bag before it fails compliance.
2 miline-of-sight range
Differential Liquid Level
Use the difference between two taps to infer level or head across tanks and vessels where a single-point gauge won’t do.
5 yrbattery (up to)
The Cost of a Difference You Didn’t See
Restriction Shows Up as ΔP First.
Filters load up quietlyA filter or baghouse restricts flow gradually, and the differential creeps up when no one is watching, by the time airflow suffers you’re already running starved.
A lost envelope is a compliance riskWhen a cleanroom or containment space loses its pressure differential, contamination moves the wrong way, one unnoticed slip can spoil a batch or fail an audit.
No log means no root causeWithout a differential-pressure history, troubleshooting is guesswork, a continuous log shows exactly when the trend turned so you fix the cause, not just the symptom.
Total Cost of Ownership
Own vs. Rent, 3 Years, 10 Sensors
The math is simple. One purchase versus compounding monthly fees.
Detailed configuration, networking, and deployment reference.
Datasheet
Product Datasheet
Full pressure, wireless, environmental, and mechanical specifications.
Overview
Product Brochure
Product overview, key features, and application highlights.
Quick Start
Quick Start Guide
Get the sensor mounted, paired to your gateway, and reporting differential pressure in a few steps.
Built for Your Industry
The Wireless Differential Pressure Sensor watches the pressure difference that keeps filtration, ventilation, and containment under control.
Manufacturing
Monitor filter, coolant, and pneumatic differential pressure across production lines to prevent starved processes and downtime.
HVAC & Building Systems
Track differential pressure across AHU filter banks, coils, and dampers to keep airflow balanced building-wide.
Pharmaceutical & Life Sciences
Prove isolation and containment rooms hold their pressure envelope to protect batches and pass audits.
Cleanroom & Semiconductor
Ultra-low-range sensing verifies room-to-room pressurization cascades stay within spec, continuously.
Data Centers
Monitor hot-aisle / cold-aisle and filter differential pressure to protect cooling efficiency and uptime.
Food & Beverage
Differential pressure on filtration, CIP, and ventilation in sanitary, washdown environments.
Water & Wastewater
Track filter and membrane differential pressure across distributed treatment sites with 2-mile range.
Chemical & Process
Monitor differential pressure across filters, scrubbers, and dust collectors handling non-corrosive gases.
Commercial Facilities
Verify building pressurization, stairwell, and filter differential pressure on multi-year battery life.
Frequently Asked Questions
Answers to the most common questions about wireless differential-pressure monitoring.
Pressure & Sensing
It’s a battery-powered industrial sensor from NCD that measures the pressure difference between two ports, in both directions, and transmits readings wirelessly up to 2 miles. It resolves differential pressure to as fine as 0.01 PSI depending on the range you choose, also reports temperature, runs for years on a single D-cell battery, and carries no monthly fees or subscriptions.
Differential means it reports the difference between the pressures at PORT 1 and PORT 2 rather than a single absolute value. Bidirectional means that difference can be read as positive or negative, so the sensor tells you not just how large the difference is, but which side is higher, useful for airflow direction, room-pressure cascades, and reversing processes.
Choose from four bidirectional ranges — ±0.15 PSI (±4.2 inH₂O), ±0.30 PSI (±8.3 inH₂O), ±5 PSI (±139 inH₂O), or ±15 PSI (±416 inH₂O) — with roughly 18 special-order sensors for other spans. Resolution depends on the range you pick, reaching up to 0.01 PSI on the low-range sensors, which is what makes it suitable for tight cleanroom and room-pressurization work as well as filter monitoring.
It’s designed for dry, non-corrosive, non-ionic gases such as air and nitrogen. Connect the two ports (PORT 1 and PORT 2) to the two points you want to compare, for example the upstream and downstream sides of a filter, or a controlled room and its reference space. The sensor also reports temperature alongside each pressure reading.
Wireless & Power
It reaches up to 2 miles line-of-sight (about 1000 ft in dense urban environments). Because the sensor forms a self-healing wireless mesh of up to 256 nodes, a single Atrium gateway can collect readings from many sensors across large or multi-building facilities.
Battery life depends on how often it transmits. The sensor runs up to 5 years on a single D-cell battery and reports its battery status in real time. An external power option is also available for permanent installations.
Integration & Ownership
No. The sensor has no monthly fees and no proprietary lock-in. You own your data and can keep it on your own network or forward it to AWS, Azure, or any MQTT broker through the Atrium gateway, there are no recurring software costs.
Yes. Readings flow through the Atrium gateway, which supports AWS, Azure, MQTT, Modbus, Node-RED, and a REST API. Data is encrypted with 128-bit AES in transit, and you can route it into existing SCADA, CMMS, or analytics platforms without vendor lock-in.
Durability & Build
Yes. The sensor uses an IP65 main enclosure (rated on the box only, not the pressure ports), also rated to NEMA 1/2/4/4X/12/13 and UL-508. It is built to handle dust, washdown, and harsh plant-floor conditions.
The sensor is made in the USA and is RoHS compliant. Its 900MHz wireless module carries FCC (USA), IC (Canada), C-Tick (Australia), Anatel (Brazil), IDA (Singapore), and CE/RED certifications, so it can be deployed across many regions.
IP65 Rated
7,000+ Customers
Made in USA
RoHS Compliant
Up to 5-Year Battery Life
See the Difference Before the Failure.
One purchase. Full ownership. Industrial-grade differential-pressure monitoring that pays for itself.
Configure Your System
Made in the USA
Filter & Strainer Clogging
Cleanroom & Room Pressurization
HVAC Duct & Filter Banks
Air Flow & Velocity
Dust Collector & Baghouse
Differential Liquid Level