EC22 Transmitter

Transmitter for toxic gases, oxygen and hydrogen


If toxic gases, oxygen or hydrogen need to be monitored outside Ex zones, the EC22 transmitter is a reliable and economical solution. The EC22 transmits measured values and status notifcations using an analog (0.2-1 mA or 4-20 mA) or digital (RS-485) signal. In combination with GfG's reliable controllers, it can be installed in new gas detection systems or retrofitted into existing ones.

The EC22 uses the electrochemical method (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. Its automatic temperature compensation and the linearization of the measurement signals ensure high measurement accuracy.

Functional safety and device protection
The EC22's hardware 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 EC22 uses two status LEDs to indicate its operating status. The optional RC22 remote control facilitates service and adjustments on site (one-person adjustment). Test gases for function tests can be inserted via a calibration adapter.


Key features at a glance:
 

General information:

  • 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)

Optionally available:

  • RC22 operating unit, weatherproof housing, calibration adapter

Detectable gases

Cl2 Chlorine
ClO2 Chlorine dioxide
CO Carbon monoxide
F2 Fluorine
H2 Hydrogen
H2S Hydrogen sulfide
HCl Hydrogen chloride
HCN Hydrogen cyanide
NH3 Ammonia
NO Nitric oxide
NO2 Nitrogen dioxide
O2 Oxygen
O3 Ozone
SiH4 Silane
SO2 Sulfur dioxide
Other gases on request.

Downloads

Extensions and accessories

Weatherproof housing


Weatherproof housing for various transmitters
» more

Test gases


Find an overview of our test gases here
» more

Accessories EC22


Find the complete list of accessories for the EC22 here
» download PDF

Our experts are happy to answer your questions! How to find us