Transmitter for toxic gases, oxygen and hydrogen
If toxic gases, oxygen or hydrogen are to be monitored outside Ex zones, the EC22 transmitter is a reliable and economical solution. The EC22 transmits measured values and status displays analogue (0.2-1 mA or 4-20 mA) or digitally (RS-485). In combination with GfG's proven controllers, installation in new gas detection systems as well as retrofitting in existing systems is possible.
The EC22 uses the electrochemical process (EC) to detect toxic gases such as carbon monoxide as well as oxygen and hydrogen. The different sensors measure a variety of gases in measuring ranges such as 0 to 2,000 ppm or 0 to 25 % by volume. Automatic temperature compensation and linearisation of the measurement signals ensure high measurement accuracy.
Functional safety and device protection
The hardware of the EC22 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 according to the analogue industrial standard (optionally 0.2-1 mA or 4-20 mA) or via the digital RS-285 interface (Modbus protocol). The transmitter indicates operating states via two status LEDs. Service and adjustments are carried out on site using the optional RC22 remote control (one-man adjustment). Test gases can be applied for function control with a calibration adapter.
Key features at a glance:
- measuring principle: Electrochemical (EC)
- for toxic and combustible gases, oxygen
- expected sensor lifetime: 2-3 years
- signal transmission: 0.2-1 mA / 4-20 mA / RS-485
- protection class: IP54
Approvals / Certifications:
- SIL 1/2 (hardware)
- RC22 operating unit, weatherproof housing, calibration adapter