For flammable gases and vapors in Ex zones
If flammable gases and vapors are to be monitored in Ex zones, the CC28 transmitter is a reliable and economical solution. The CC28 transmits measured values and status displays in analog (4-20 mA). The special stack effect ensures the shortest response times of a few seconds for rapid warning of explosion hazards. In combination with GfG's proven controllers, installation in new gas detection systems as well as retrofitting in existing systems is possible.
The CC28 uses catalytic combustion (CC; also heat tone or HT) to detect combustible gases and vapors such as methane, propane and hydrogen. The long-life sensors make the CC28 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 linearization of the measurement signals ensure high measurement accuracy.
Explosion protection, functional safety and device protection
The CC28 has ATEX certification for use in Ex zone 1. Its hardware complies with the European Functional Safety Standard DIN EN 61508-2: 2011 (SIL). The housing is protected against dust and water ingress (protection class: IP64). An optional weatherproof housing provides additional protection.
Communication and service
Signal transmission is based on the analog industry standard (4-20 mA). The transmitter indicates operating states via two status LEDs. Service and adjustments are carried out on site using the optional RC2 remote control (one-man adjustment). The pre-adjusted sensors can be easily replaced thanks to Smart Sensor technology. Test gases can be fed in for function checks using a flow-through adapter. If the CC28 has been installed near the ceiling, a specially developed remote calibration adapter allows the test gas to be supplied without affecting the sensor's stack effect.
Key features at a glance:
- Measuring principle: catalytic combustion (CC)
- for combustible gases and vapors
- short response time due to stack effect
- expected lifetime of sensors: 5 years
- signal transmission: 4-20 mA
- protection class: IP64
Approvals / Certifications:
- ATEX certification: II 2G Ex demb [ib] IIC T4 Gb
- SIL 2/3 (hardware)
- operating unit RC2, windshield, weatherproof housing, flow-through adapter, remote calibration adapter
|C6H12O||Methyl isobutyl ketone (MIBK)|