GfG Instrumentation 2221001 ZD22 Series Fixed Transmitter, No Display, (Base Unit without Sensor), 4-20 mA

Transmitter for selective long-term monitoring of oxygen

If you need to selectively monitor oxygen over a long period of time, the ZD22 transmitter is a durable and economical solution. The ZD22 transmits measured values and status displays via analog (4-20 mA) signal. In combination with GfG's reliable controllers, it can be installed in new gas detection systems or retrofitted into existing ones.

The ZD22 detects oxygen using a zirconium dioxide (ZD) sensor that is not susceptible to ambient conditions or sensor poisons. The long-life sensors make the ZD22 an economical solution for detecting oxygen in measurement ranges such as 0 to 1,000 ppm or 0 to 96 % by volume. Its automatic temperature compensation and the linearization of the measurement signals ensure high measurement accuracy.

Functional safety and device protection

The hardware of the ZD22 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).

Communication and service

Signals are transmitted using either the analog industrial standard (4-20 mA). The ZD22 uses two status LEDs to indicate its operating status. The optional RC22 remote control facilitates service and adjustments on site (one-person adjustment). Test gas for function tests can be inserted via a calibration adapter.

Features:

• Measuring principle: zirconium dioxide (ZD)
• For oxygen
• Expected sensor lifetime: 4-5 years
• Signal transmission: 4-20 mA
• Protection class: IP54
• No Sensor

Approvals / Certifications:

• SIL 2/3 (hardware)

For more information, please see Info Sheet and Full Specification