ZD22 D Transmitter

The ZD22 D detects oxygen using a zirconium dioxide sensor (ZD), which is not susceptible to ambient conditions and sensor poisons. The current measured value is displayed on the 2.2-inch display, which lights up red in the event of an alarm. The long-life sensors make the ZD22 D an economical solution for the detection of oxygen in the measuring ranges 10 to 1,000 ppm and 0.01 to 96 % 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 ZD22 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 ZD22 D uses two status LEDs to indicate its operating status. The intuitive 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 ZD22 D's menu. Test gas for function tests can be inserted via a calibration adapter.

Key features at a glance:

General information:

• Measuring principle: zirconium dioxide (ZD)
• For oxygen
• Expected sensor lifetime: 4-5 years
• 2.2-inch color display, built-in button interface, buzzer
• Signal transmission: 0.2-1 mA / 4-20 mA / RS-485
• Protection class: IP54

Approvals / Certifications:

• SIL 2/3 (hardware)

Optionally available:

• RC22 operating unit, weatherproof housing, calibration adapter