- City 傳感器您現在所在的位置: 首頁 > City 傳感器
Technical Specifications
MEASUREMENT:
Operating Principle | 3-electrode electrochemical |
Measurement Range | 0-1000 ppm CO |
Maximum Overload | 2000 ppm CO |
Filter | To remove acid gases and hydrocarbons |
Sensitivity* | 0.07 ± 0.015 μA/ppm |
Response Time (T 90 )* | < 20 Seconds |
Baseline Offset (clean air)* | < ±2 ppm equivalent |
Zero Shift (-40°C to +50°C)* | < + 12 ppm equivalent |
Repeatability * | < ±3% |
Linearity* | Within ±5% |
ELECTRICAL:
Recommended Load Resistor | 5? |
Bias Voltag | Not required |
MECHANICAL:
Housing Material | Noryl 110 |
Weight | 5 g (nominal) |
Orientation | Any |
ENVIRONMENTAL:
Typical Applications | Portable life safety |
Operating Temperature Range: Continuous Intermittent |
-20°C to +40°C -40°C to +55°C |
Operating Pressure Range Operating Humidity Range: | 1 atm ± 10%
|
Continuous | 15% to 90% RH non-condensing |
INTRINSIC SAFETY DATA:
Maximum at 2000 ppm | 0.2 mA |
Maximum o/c Voltage | 1.3 V |
Maximum s/c Current | <1.0 A |
LIFETIME:
Long Term Output Drift* | < 5% per annum |
Recommended Storage Temp | 10°C to +30°C |
Expected Operating Life | 2 years in air |
Storage Life | 6 months in original packaging |
Standard Warranty | 18 months from date of despatch |
IMPORTANT NOTE:
All performance data is based on conditions at 20°C, 50%RH and 1 atm, using City Technology recommended circuitry.
Sensor performance is temperature dependant. For sensor performance at temperatures other than 20°C, please contact City Technology.
Specifications are valid at 20°C, 50% RH and 1013 mBar, using City Technology recommended circuitry.
Performance characteristics outline the performance of sensors supplied within the first 3 months.
Output signal can drift below the lower limit over time.
Poisoning
CiTiceLs are designed for operation in a wide range of environments and harsh conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage, fitting into instruments, and operation.
When using sensors with printed circuit boards (PCBs), degreasing agents should be used before the sensor is fitted. Do not glue directly on or near the CiTiceL as the solvent may cause crazing of the plastic.
Cross Sensitivity Table
Whilst CiTiceLs are designed to be highly specific to the gas they are intended to measure, they will still respond to some degree to various other gases. The table below is not exclusive and other gases not included in the table may still cause a sensor to react.
IMPORTANT NOTE : The cross sensitivity data shown below does not form part of the product specification and is supplied for guidance only. Values quoted are based on tests conducted on a small number of sensors and any batch may show significant variation. For the most accurate measurements, an instrument should be calibrated using the gas under investigation.
Gas | Concentration Used (ppm) | Reading (ppm CO) |
Carbon Monoxide | 50 | 50 |
Hydrogen Sulfide | 20 | <5 |
Sulphur Dioxide | 20 | <5 |
Nitrogen Dioxide | 20 | -5 ≤ X$ ≤ 0 |
Nitric Oxide | 50 | <25 |
Chlorine | 0.5 | 0 |
Hydrogen | 200 | ~25 |
Ethylene | 100 | 100 |
Carbon Dioxide | 5000 | 0 |
Ammonia | 50 | 0 |
Methanol | 200 | 0 |
