Pneumotronics supplies medical gases to ward areas through a dedicated branch of the main distribution network fed by the Medical Gas Manifold systems. Branch lines use 15 mm Type L copper for standard wards and 22 mm tubing for corridors serving more than 12 beds to maintain flow during peak demand. Zone Valve Boxes are installed at each ward entrance to allow isolation without affecting nearby areas.

Bed Head Units are custom built for each room and include two Medical Gas Outlets one oxygen and one vacuum with optional medical air for wards using frequent nebulized therapy. Outlets use gas specific, non interchangeable connections per DIN 13260 2 to prevent misconnections.

Oxygen Flowmeters are installed at the bedside with a dual scale tube 0 to 15 L per min, a ball float indicator, and a humidifier bypass port for quick switching between humidified and dry delivery.

Technical Note: Zone valve boxes should be mounted 1 point 4 to 1 point 6 meters above the floor. Flowmeter accuracy must be verified at installation; drift beyond plus or minus 5 percent indicates contamination and requires replacement.

Each Bed Head Unit integrates a centralized information management communication platform combining gas outlets and communication interfaces. The Bedside Control Panel includes a backlit call button, a speaker and microphone for two way communication, and a nurse presence indicator. The system supports bus, star, or mixed wiring for flexibility in new builds and renovations.

A pendant style Call Button with a 2 meter cable is provided for patients with limited mobility. The system supports call prioritization, with emergency calls sent immediately to all nurse stations and duty stations.

A Room Control Terminal at the room entrance displays patient name, assigned nurse, call status, and active alarms such as low gas pressure. It also functions as a staff presence indicator.

Technical Note: Multiple wiring options allow phased upgrades in older buildings. The bed existence sensor uses a load cell with a 20 kg threshold and should be calibrated monthly. Voice communication quality is verified at installation; ambient noise must remain below 55 dB for clear two way audio.

Corridor Displays are installed at intervals to show active calls and priority levels. High brightness LED displays are readable from 15 meters and recessed into the ceiling to avoid obstruction.

At the Nurse Station, the Network Nurse Master Station serves as the communication hub. A touch screen interface shows a color coded floor plan of call status. Calls escalate automatically to Duty Stations or Nurse Handsets if not acknowledged within 30 seconds. The system supports future expansion without rewiring.

Duty Stations provide full call management capability and can operate in sleep mode during off peak hours, receiving only emergency calls.

Technical Note: Corridor displays should avoid direct lighting glare; anti reflective filters are recommended. The nurse station touch screen uses antimicrobial glass and can be cleaned with alcohol based disinfectants.

Door Lamp Indicators at each room entrance provide clear visual status: green for occupied, yellow for staff in room, red for active call, and flashing red for emergency. Units are flush mounted for visibility from both directions.

Nurse Handsets support staff mobility and act as portable extensions of the nurse station. They operate on a dedicated wireless frequency covering the entire ward and support two way communication, call alerts, and call clearing. Battery status is monitored by the master unit.

The handset system integrates with the Central Gas Monitoring System to deliver critical alerts directly to caregivers. For example, a low oxygen pressure alert from a zone valve box is sent to the nurse station and all active handsets simultaneously.

Technical Note: Door lamp indicators should use LED modules rated for at least 50,000 hours. Units showing color shift after two years should be replaced. Nurse handset coverage must be verified with a spectrum analyzer; minimum signal strength of minus 75 dBm is required for reliable operation.