CC22 ex Transmitter
Monitoring flammable gases and vapours in Ex zones
If flammable gases and vapours are to be monitored in hazardous areas, the CC22 ex transmitter is a reliable and economical solution. The CC22 ex 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 CC22 ex uses catalytic combustion (CC; also heat tone or HT) to detect flammable gases and vapours such as methane, propane and hydrogen. The long-life sensors make the CC22 ex an economical solution for detecting a wide range of combustible gases in the measuring ranges 0 to 100 % LEL and 0 to 4 % by volume (NH3). Automatic temperature compensation and linearisation of the measuring signals ensure high measuring accuracy.
Explosion and device protection
The CC22 ex is ATEX certified for use in Ex zone 2. The housing is protected against the ingress of dust and water (protection class: IP65).
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 a status LED. Service and adjustments are carried out on site using a smartphone app or magnetic pen (one-man adjustment). Test gases can be added for function control with a calibration adapter. If the CC22 ex has been installed near the ceiling, a specially developed remote calibration adapter allows the test gas to be applied without affecting the sensor's stack effect.
Key features at a glance:
- measuring principle: catalytic combustion (CC)
- for flammable gases and vapours
- expected sensor lifetime: 5 years
- signal transmission: 0.2-1 mA / 4-20 mA / RS-485
- protection class: IP65
Approvals / Certifications:
- ATEX certification: II 3G Ex nA db IIC T4 Gc
- optional: calibration adapter, remote calibration adapter
|C4H8O||Methyl ethyl ketone|
|C6H12O||Methyl isobutyl ketone (MIBK)|