Cl2
Gas | Chlorine Gas |
Formula | Cl2 |
CAS number | 7782-50-5 |
Max. workplace concentration | 0.5 ppm |
Relative density | 2.48 |
Appearance | Green-yellow color Chlorine odor |
Hazards | Toxic Irritant to corrosive |
The ME1250 Gas Sensor is a remote measuring unit for monitoring gas concentration and is used as a leak detector.
The microprocessor-controlled electronics of the sensor, adapted to the specific properties of the measuring cell, enable fast and reliable signal processing. The measured gas con-centration is transmitted to a Gas Control Panel, which can manage a large number of distributed gas sensors.
Thanks to bus communication, only one cable is required, which can be continued from sensor to sensor. The ME 1250 Gas Sensor is also available with an analogue output signal of 4…20 mA. The measured gas concentration can thereby be processed by other PLC (Programmable Logic Controllers).
The optional relay module expands the ME 1250 Gas Sensor internally with 3 relays for direct switching of signal transmitters without the use of a control panel.
Advantages
- Automatic zero point calibration
- Active noise reduction on the measurement signal
- Linear measurement signal depending on the gas concentration
- High response sensitivity with short response time
- Selective and reliable measurement with a stable measurement signal and zero point
- Temperature-compensated measurement signal
- Long service life
The chlorine gas sensor comes in two different measuring ranges. In the case of possible concentrations of more than 2 ppm, the measuring cell with the larger measuring range should be used.
Technical Specifications
Versions
Article codes | ||
---|---|---|
Measuring range: 0…20 ppm Measuring range: 0…1,000 ppb | 12BUS-CL2-21 12BUS-CL2-10 | 1250-CL2-21 1250-CL2-10 |
Description | Gas Sensor ME 1250 Cl2 Chlorine Gas Bus communication | Gas Sensor ME 1250 Cl2 Chlorine Gas Analogue |
Output signal | Bus communication with gas control panel | Analogue 4…20 mA Load max. 800 Ω at 24V input |
Connection | 4-core cable U72M 1x4x0.6 mm Shielded | 3-core cable U72M 1x4x0.6 mm or CY 0.5 mm2 Shielded |
Topology | Bus, tree or star topology | Star topology |
Power | < 0.15 W | < 0.8 W |
Signal Processing
Accessories
Article Code | Description |
1250-REL | Relay module for single sensor ME 1250 |
1250-AIR-BOX | Ventilation duct add-on box for gas sensor ME 1250 |
1250-AIR-FLOW | Fitting hose connection for gas sensor ME 1250 |
1250-SUP | Mounting plate round pillars for gas sensor ME 1250 |
1250-SCHUTZ | Sun and weather protection for gas sensor ME 1250 |
Consumables
Article code | Description | Lifespan |
---|---|---|
CELL-CL2-C20 | Measuring cell for chlorine gas 0…20 ppm | up to 2 years |
CELL-CL2-C5 | Measuring cell for chlorine gas 0…1,000 ppb | up to 2 years |
Gas concentration
- Exposure above 10 ppm / 500 ppb requires recalibration
- Exposure above 40 ppm / 2,000 ppb can destroy the measuring cell
Cross sensitivity
For the measuring cell CELL-CL2-C20
Gas | Konzentration | Messwert |
---|---|---|
Bromine Br2 | 10 ppm | 2.5 ppm |
Ethene C2H4 | 100 ppm | 0 ppm |
Formaldehyde CH2O | 7 ppm | 0 ppm |
Chlorine Dioxide ClO2 | 3 ppm | ~ 3 ppm |
Carbon Monoxide CO | 300 ppm | 0 ppm |
Ethanol C2H5OH | 60 ppm | 0 ppm |
Fluorine F2 | 8 ppm | -8 ppm |
Hydrogen H2 | 100 ppm | 0 ppm |
Hydrogen Sulfide H2S | 20 ppm | < -20 ppm |
Hydrogen Chloride HCl | 20 ppm | 0 ppm |
Ammonia NH3 | 80 ppm | 0 ppm |
Nitric Oxide NO | 50 ppm | 0 ppm |
Nitrogen Dioxide NO2 | 20 ppm | ~20 ppm |
Ozone O3 | 1 ppm | ~1 ppm |
Sulfur Dioxide SO2 | 5 ppm | 0 ppm |