Pac 8500 Dual Gas Monitor for Hydrogen-Compensated Carbon Monoxide Measurement (CO/ H2-CP) US
The gas detector Pac 8500 CO-H2 CP selectively measures carbon monoxide up to a hydrogen concentration of 1000 ppm (2.5% LEL).
Carbon monoxide and hydrogen can simultaneously occur in work areas such as the steel industry, refineries, and wastewater treatment plants. Hydrogen affects the CO signal in standard sensors, leading to false alarms. The DrägerSensor® XXS CO H2-CP operates with two measuring electrodes, one measuring CO and H2, and the other only H2. By calculating the difference between the two signals, only the CO value is displayed. Thus, a hydrogen concentration of 1000 ppm (2.5% LEL) results in a maximum reading of 15 ppm CO without triggering the CO alarm.
- Single-gas detector for personal measurement
- Sensor: hydrogen-compensated carbon monoxide sensor
- Standard measurement range: 0 to 2000 ppm
- A1/A2 alarm thresholds: 20/40 ppm
- Highly visible 360° alarm, acoustic and visual
- The gas detector features powerful XXS sensor technology with high response speed
- Recording of concentrations and results with date and time
Perform mandatory function tests before each use with the Dräger test and calibration stations and the corresponding test gases. The basis for the function tests are the information sheets T021 / T023 (DGUV Information 213-056 or DGUV Information 213-057). Further information can be found here.
If you desire a custom alarm threshold configuration, please provide the alarm thresholds at the end of the ordering process in the comment field.
Further product information can be found on our website. Please follow the link.
Technical Data - Dräger Sensor XXS CO H₂-CP
| Detection Limit | 6 ppm |
|---|---|
| Resolution | 2 ppm |
| Measurement Range | 0 to 2000 ppm CO (carbon monoxide) |
| Response Time | ≤ 25 seconds (t₉₀) |
| Precision Sensitivity | ≤ ± 2 % of the measured value |
| Long-Term Drift (at 20 °C) |
|
| Settling Time | ≤ 12 hours |
| Ambient Conditions |
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| Temperature Influence |
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| Humidity Influence |
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| Test Gas | 20 to 1800 ppm CO and 1000 ppm H2 |
Relevant Cross-Sensitivities - Dräger Sensor XXS CO H₂-CP
The values provided in the table are guidelines and apply to new sensors. Values may vary by ±30%. The sensor may also be sensitive to other gases (data available on request from Dräger). Gas mixtures may be displayed as a sum. Gases with negative sensitivity may compensate for a positive CO display. It should be verified whether gas mixtures are present.
| Gas/Vapor | Concentration | Display in ppm CO with Selective Filter |
|---|---|---|
| Ammonia (NH₃) | 100 ppm | No influence |
| Chlorine (Cl₂) | 20 ppm | No influence |
| Hydrochloric Acid (HCl) | 40 ppm | No influence |
| Hydrogen Cyanide (HCN) | 50 ppm | No influence |
| Ethanol (C₂H₅OH) | 250 ppm | No influence |
| Ethylene (C₂H₄) | 100 ppm | ≤ 300 |
| Acetylene (C₂H₂) | 100 ppm | ≤ 200 |
| Isobutene (CH₃)₂CCH₂ | 100 ppm | No influence |
| Carbon Dioxide (CO₂) | 30 Vol.-% | No influence |
| Methane (CH₄) | 5 Vol.-% | No influence |
| Propane (C₃H₈) | 1 Vol.-% | No influence |
| Sulfur Dioxide (SO₂) | 25 ppm | No influence |
| Hydrogen Sulfide (H₂S) | 30 ppm | No influence |
| Nitrogen Dioxide (NO₂) | 20 ppm | No influence |
| Nitric Oxide (NO) | 30 ppm | ≤ 5 |
| Hydrogen (H₂) | 0.1 Vol.-% | ≤ ± 15¹) |
(-) Negative sign of deviation
| Rental Advanced: | Yes |
|---|---|
| Rental item or Consumable?: | Rental items |
| Sensors: | CO |
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