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Transmitter ZD22

Product catalog summary

Overview: The ZD22 Transmitter is designed for long-term monitoring of oxygen concentration using a zirconium dioxide (ZD) electrochemical oxygen pump cell. It is highly selective for oxygen and offers short response times, making it insensitive to ambient conditions and sensor poisons.

Specifications: The ZD22 complies with the European Functional Safety Standard DIN EN 61508-2: 2011, achieving SIL2 in single-channel use and SIL3 in redundant use. It supports signal transmission via the 4-20 mA industry standard or digitally through the RS-485 interface (Modbus/RTU).

Protection and Display: The transmitter's housing is IP54 rated, protecting against splash water and dust. It features two status LEDs indicating operating status, faults, and required service work.

Measurement and Costs: The ZD22 ensures reliable measurement with low operating costs due to its long-life sensors and built-in temperature compensation. It offers variants with or without a display and acoustic alarm for on-site measured value display.

Technical Data: The ZD22 operates within a temperature range of -20 to +50 °C and humidity of 5 to 90% r.h. It supports analog output signals of 0.2-1 mA or 4-20 mA and digital RS-485. The sensor has a lifetime of 4-5 years with a response time of t90 ≤ 5 s.

Dimensions and Certifications: The transmitter measures 96 x 141 x 49 mm and weighs 175 g. It is certified for functional safety under DIN EN 61508-2: 2011.

Catalog excerpts

Fixed Gas Detection Systems Long-term monitoring of oxygen

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ZD22 Transmitter Long-term monitoring of oxygen Overview of available measuring ranges and SIL: The ZD22 was developed especially for long-term monitoring of the oxygen concentration. The ZD22 uses a sensor based on a zirconium dioxide (ZD) electrochemical oxygen pump cell. Selectively for oxygen, the ZD sensor is insensitive to ambient conditions as well as sensor poisons and convinces at the same time with very short response times. The hardware of the ZD22 complies with the European Functional Safety Standard DIN EN 61508-2: 2011*. Thus, hardware SIL2 is possible in single-channel use (1oo1)...

Open the catalog to page 2

Transmitter ZD22

Transmitter ZD22

Catalog excerpts

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