IR22 D Transmitter

The IR22 D uses an infrared sensor (IR) to detect carbon dioxide and the combustible gases methane and propane. The current measured values are displayed on the 2.2-inch display, which lights up red in the event of an alarm. The long-life sensors make the IR22 D an economical solution for detecting gases in measuring ranges such as 0 to 10,000 ppm, 0 to 100 LEL or 0 to 50 % by volume. Its automatic temperature compensation and the linearization of the measuring signals ensure high measuring accuracy.

Functional safety and device protection
The hardware of the IR22 D complies with the European Functional Safety Standard DIN EN 61508-2: 2011 (SIL). The housing is protected against the ingress of dust and water (protection class: IP54). An optional weatherproof housing provides additional protection.

Communication and service
Signals are transmitted via the analog industrial standard (optionally 0.2-1 mA or 4-20 mA) or the digital RS-485 interface (Modbus protocol). The IR22 D uses two status LEDs to indicate its operating status. The built-in button interface facilitates service and adjustments on site (one-person adjustment). The multicolor backlit display shows the current measured value, status notifications and the menu of the IR22 D. Test gases for function tetsts can be inserted using a calibration adapter.

Key features at a glance:

General information:

• Measuring principle: Infrared (IR)
• For carbon dioxide and flammable gases
• Expected sensor lifetime: > 5 years
• Color 2.2-inch display, built in button interface, buzzer
• Signal transmission: 0.2-1 mA / 4-20 mA / RS-485
• Protection class: IP54

Approvals / Certifications:

• SIL 1/2 (hardware)

Optionally available:

• RC22 operating unit, weatherproof housing, calibration adapter