Abatement Technologies RPM-RT1 Room Pressure Monitor – ±0.10 inWC, BACnet, 24V

Wall-Mounted Differential Pressure Monitor for Isolation Rooms and ICRA Construction Zones

The Abatement Technologies RPM-RT1 is a wall-mounted differential pressure monitor designed for continuous negative and positive pressure verification in healthcare isolation rooms, cleanrooms, and active construction containment zones. It measures from −0.10 to +0.10 in. water column (±25 Pa) with ±3% full-scale accuracy, displays real-time readings on a 3.5" 262K-color TFT touchscreen, and logs over 12,000 timestamped events to internal memory or a USB flash drive in CSV format. At 0.5 lbs and 5.98" × 4.02" × 1.11", it surface-mounts directly to a single-gang electrical box on any interior wall.

RPM-RT1 Sensing, Display, Alarm, and Connectivity Specifications

• Measurement range: ±0.10 inWC (±25 Pa) — covers negative pressure isolation rooms (typically −0.01 inWC) and positive pressure cleanrooms up to ±0.10 inWC
• Display resolution: 0.001 inWC / 0.025 Pa — fine enough to detect drift before an alarm condition develops
• Accuracy: ±3% full scale — meets precision requirements for Joint Commission and CDC/HICPAC isolation room documentation
• 3.5" 262K-color TFT touchscreen (320 × 240) — color-coded Green/Yellow/Red alarm status visible across a room without approaching the unit
• Audible alarm: 85 dB at 4" — internal speaker audible in standard hospital room construction noise conditions; adjustable audio delay and timed shutoff prevent nuisance alarms
• Custom alarm set points: −0.10 to +0.10 inWC — configurable per room type; alarm thresholds can be tightened for critical isolation rooms
• Auxiliary alarm relay: 2A @ 30V DC, normally open — wire to nurse call systems, building automation panels, or remote indicators
• BACnet and N2 protocol support — integrates with building management systems (BMS/BAS) for centralized pressure monitoring across multiple rooms
• USB Type-A port — exports logged events as CSV files directly to flash drive; importable into Excel, CMMS, or reporting software
• Data storage: 4 megabits, 12,000+ events — each event logged with date and time stamp including alarm conditions and calibration records
• Internal lithium-ion clock battery — maintains accurate timestamps during power outages without resetting the internal clock
• Password protection — prevents unauthorized modification of alarm set points; can be disabled if facility policy does not require it
• Input voltage: 9–24V AC or DC — compatible with most wall-plate power supplies and BMS low-voltage circuits

Where the RPM-RT1 Is Required

Negative pressure isolation rooms under CDC/HICPAC guidelines must maintain at least −0.01 inWC relative to adjacent corridor space, confirmed by continuous monitoring with a device capable of recording pressure over time. The RPM-RT1's logging, alarm, and BACnet integration satisfy that documentation requirement without a separate data recorder. During ICRA Class III and IV construction in occupied hospitals, containment zones must demonstrate negative pressure is maintained for the duration of work — the RPM-RT1 provides the paper trail required for Joint Commission survey readiness. It also serves pharmaceutical cleanroom anteroom monitoring, laboratory biosafety suite pressure verification, and any critical environment under ASHRAE 170 or USP 797/800 pressure requirements.

ICRA and Regulatory Context, Power Wiring, and What Ships

For ICRA construction monitoring, the RPM-RT1 is typically powered from a 24V AC transformer mounted in the containment zone and connected to 1/8" ID vinyl tubing run through the barrier wall — one port sampling inside the containment, one port sampling the corridor. The monitor's BACnet output allows infection preventionists to view live pressure data at the nursing station without entering the construction zone. Under The Joint Commission's EC.02.06.05 standard, facilities must demonstrate control of airborne contaminants in areas undergoing construction; the RPM-RT1's logged event history with alarm timestamps provides the documentation trail for that standard. The unit ships with the monitor, mounting hardware for single-gang box installation, 1/8" barb pressure port fittings, and a product data sheet. Tubing and transformer are not included and must be sourced separately.

Documents

RPM-RT1 Product Data Sheet