Made in the USA
No software to install. No cloud accounts to create. Tube it in, power on, monitor.
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.
Run on a single D-cell battery or the external power option. The IP65 main enclosure handles dust and washdown environments.
A self-forming, self-healing wireless mesh reaches up to 2 miles line-of-sight, with multi-hop routing across your facility.
Browser dashboards, threshold email alerts, and CSV export. Forward readings to AWS, Azure, or any MQTT broker. Catch the differential-pressure trend early.
NCD builds three wireless pressure sensors, and they differ in exactly one thing: the pressure they are built to read. Pick by the size of the number you expect to see.
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.
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.
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.
| 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 |
| 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 |
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.
| 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 | Mon at 8:00 AM | repor… |
The App Center runs on the gateway itself, an app store on your own hardware with no cloud account and nothing to sign into somewhere else. Browse the catalog in your browser, install what the job needs in seconds, and update it in place. Your gateway starts as a lean core and grows only where your operation actually needs it.
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.
Industrial differential-pressure monitoring that runs locally. No cloud dependency. No software license.
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.
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.
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.
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.
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.
Update firmware wirelessly across your fleet over the wireless mesh network. No climbing ladders, no removing sensors from service.
| Measurement Type | Bidirectional differential (positive & negative ΔP) |
| Range Options | ±0.15 PSI (±4.2 inH₂O), ±0.30 PSI (±8.3 inH₂O), ±5 PSI (±139 inH₂O), ±15 PSI (±416 inH₂O); ~18 special-order sensors available |
| Pressure Resolution | 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) |
| 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) |
| 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 |
| 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 |
| 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 |
| Certifications | CE/RED, RoHS, FCC, IC, C-Tick, Anatel, IDA |
| ±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 |
Anywhere the difference between two pressures tells you something before airflow does.
Filter & Strainer CloggingWatch differential pressure climb across a filter or strainer to change it on condition, not on a fixed calendar, and never on a blowout.
Cleanroom & Room PressurizationVerify a cleanroom, isolation room, or lab stays positively or negatively pressurized against adjacent spaces, with an alert the moment the envelope slips.
HVAC Duct & Filter BanksTrack static and differential pressure across coils, dampers, and AHU filter banks to keep airflow balanced and spot loading early.
Air Flow & VelocityPaired with a pitot tube or orifice plate, differential pressure gives you flow and velocity across ducts and process lines.
Dust Collector & BaghouseMonitor the pressure drop across baghouse or cartridge media to time pulse-cleaning and catch a torn bag before it fails compliance.
Differential Liquid LevelUse the difference between two taps to infer level or head across tanks and vessels where a single-point gauge won’t do.
The math is simple. One purchase versus compounding monthly fees.
The Wireless Differential Pressure Sensor watches the pressure difference that keeps filtration, ventilation, and containment under control.
Monitor filter, coolant, and pneumatic differential pressure across production lines to prevent starved processes and downtime.
Track differential pressure across AHU filter banks, coils, and dampers to keep airflow balanced building-wide.
Prove isolation and containment rooms hold their pressure envelope to protect batches and pass audits.
Ultra-low-range sensing verifies room-to-room pressurization cascades stay within spec, continuously.
Monitor hot-aisle / cold-aisle and filter differential pressure to protect cooling efficiency and uptime.
Differential pressure on filtration, CIP, and ventilation in sanitary, washdown environments.
Track filter and membrane differential pressure across distributed treatment sites with 2-mile range.
Monitor differential pressure across filters, scrubbers, and dust collectors handling non-corrosive gases.
Verify building pressurization, stairwell, and filter differential pressure on multi-year battery life.
Answers to the most common questions about wireless differential-pressure monitoring.
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.
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.
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.
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.
Our engineers answer in public on the community forum, and the thread stays up for the next person with the same question.
Ask on the NCD Community ForumOne purchase. Full ownership. Industrial-grade differential-pressure monitoring that pays for itself.
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