Transmitter for monitoring flammable gases and vapours
If flammable gases and vapours are to be monitored outside Ex zones, the CC22 transmitter is a reliable and economical solution. The CC22 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 uses catalytic combustion (CC; also heat tone or HT) to detect combustible gases and vapours such as methane, propane and hydrogen. The long-life sensors make the CC22 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.
Functional safety and device protection
The hardware of the CC22 complies with the European standard for functional safety 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: 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: IP54
Approvals / Certifications:
- SIL 2/3 (hardware)
- RC22 operating unit, weatherproof housing, calibration adapter
|C4H8O||Methyl ethyl ketone|
|C6H12O||Methyl isobutyl ketone (MIBK)|