CEMS maritime
NDIR-gas analyzer for scrubber
CEMS maritime
This system for Continuous Emission Monitoring (CEMS) is built for the maritime use. It has been specially developed for analyzing gas concentrations in DeSOX applications (Scrubbers). Where ship emissions are limited by regulation (ECAs), our system can be integrated for monitoring SO2 and CO2. The compact box includes a precise and efficient NDIR sensor, a gas dryer, a human machine inferface, pumps, analog outputs and Modbus communication. By operating the NDIR sensor in change flow mode, a stable zero point can be ensured over long time periods.
Measurement principle:
SO2 and CO2 are measured by a nondispersive infrared (NDIR) analyzer.
Since we are not using any moving parts in our NDIR module, we can ensure a long term operation with fewest maintenance needs.
As sample gas enters the analyzer, it gets precisely cooled down to 4°C, which minimizes humidity influences. Additional pressure regulation as well as temperature regulation allow measurements with highest accuracy.
A Control Valve Unit enables a change-flow-mode technique to ensure a long-term stability.
size: 687 x 860 x 360 mm
Flow Diagramm
- Key Features
- Simultaneous measurement of CO2 and SO2
- Easy & flexible installation due to compact size
- Long-term stability by operating in change flow mode
- Robust against rough environmental conditions
- Analyzer performance according to the NOX technical code 2008 / MEPC 177(58)
- Main Features
- An integrated housing cooler ensures a stable air conditioning inside the box.
- Change-flow-mode: The internal Control Valve Unit is managing a continuous zero point correction for a stable zeropoint.
- An integrated HMI is managing the analog and digital communication as well as the 7" Touch-Panel for operating purposes.
- The valves, pumps, filter and the gas cooler are arranged in smart modules which can be replaced quick & easy.
- Optimized service and maintenance possibilities provide an uncomplicated support for the system integrator.
- The IP43 enclosure is mounted by damping elements to withstand all kinds of vibrations.
- Measuring Range
Measuring range1 SO2 0 - 250 ppm CO2 0 - 20 % 1 other measuring ranges upon request - Specifications
Specifications Accuracy ≤ ± 2 % of reading or 0,3 % of full scale Noise ≤ ± 2 % of full scale Zero drift ≤ 2 % of full scale in 1 h Span drift ≤ 2 % of full scale in 1 h Precision ≤ ± 1 % of full scale Response time < 30 s Ambient conditions Temperature: -5 to 45 °C, Humidity: < 90%, Sample gas Filtered, heated sample gas line (no condensation) Gas flow 3 l/min(1), warning message for incorrect flow values Power supply 90 - 264 V AC/50 - 60 Hz, internal safety management, max. power consumption 380 W Dimensions 860 x 687 x 360 mm Assembly Wall installation under shelter or installation in control room Analog output Current output 4 - 20 mA for each measured gas Digital output Analyzer calibration status Communication Modbus TCP/IP Weight 40 kg Connections zero gas, combined span gas, sample gas, exhaust, drain, compressed air Zero point correction Automatically done by change-flow-mode Interface Integrated HMI with 7" LCD (capacitive touch) 1 can be adjusted if necessary - Download
- Key Features
- Simultaneous measurement of CO2 and SO2
- Easy & flexible installation due to compact size
- Long-term stability by operating in change flow mode
- Robust against rough environmental conditions
- Analyzer performance according to the NOX technical code 2008 / MEPC 177(58)
- Main Features
- An integrated housing cooler ensures a stable air conditioning inside the box.
- Change-flow-mode: The internal Control Valve Unit is managing a continuous zero point correction for a stable zeropoint.
- An integrated HMI is managing the analog and digital communication as well as the 7" Touch-Panel for operating purposes.
- The valves, pumps, filter and the gas cooler are arranged in smart modules which can be replaced quick & easy.
- Optimized service and maintenance possibilities provide an uncomplicated support for the system integrator.
- The IP43 enclosure is mounted by damping elements to withstand all kinds of vibrations.
- Download
Measuring Range
| Measuring range1 | |
|---|---|
| SO2 | 0 – 250 ppm |
| CO2 | 0 – 20 % |
| 1 other measuring ranges upon request | |
Specifications
| Specifications | |
|---|---|
| Accuracy | ≤ ± 2 % of reading or 0,3 % of full scale |
| Noise | ≤ ± 2 % of full scale |
| Zero drift | ≤ 2 % of full scale in 1 h |
| Span drift | ≤ 2 % of full scale in 1 h |
| Precision | ≤ ± 1 % of full scale |
| Response time | < 30 s |
| Ambient conditions | Temperature: -5 to 45 °C, Humidity: < 90%, |
| Sample gas | Filtered, heated sample gas line (no condensation) |
| Gas flow | 3 l/min(1), warning message for incorrect flow values |
| Power supply | 90 – 264 V AC/50 – 60 Hz, internal safety management, max. power consumption 380 W |
| Dimensions | 860 x 687 x 360 mm |
| Assembly | Wall installation under shelter or installation in control room |
| Analog output | Current output 4 – 20 mA for each measured gas |
| Digital output | Analyzer calibration status |
| Communication | Modbus TCP/IP |
| Weight | 40 kg |
| Connections | zero gas, combined span gas, sample gas, exhaust, drain, compressed air |
| Zero point correction | Automatically done by change-flow-mode |
| Interface | Integrated HMI with 7″ LCD (capacitive touch) |
| 1 can be adjusted if necessary | |
