PAS Sense 1314i Photoacoustic Gas Monitor from CAI ENVEA Group is a highly accurate, reliable, and stable quantitative gas monitoring system. Its measurement system, based on the photoacoustic infrared detection method, is capable of measuring almost any gas that absorbs infrared light. Gas selectivity is achieved through the use of optical filters. By installing up to five filters, the 1314i can measure the concentration of up to five component gases and water vapor in any air sample. The detection limit is gas-dependent, but is typically in the ppb region. Accuracy of these measurements is ensured by the 1314i’s ability to compensate for temperature and pressure fluctuations, water vapor interference, and interference from other gases known to be present. Reliability of measurement results can be ensured by regular self tests. This measurement system requires no consumables and very little regular maintenance. For most applications, recalibration is only necessary one to two times a year.
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Brand
California Analytical Instruments
Overview
CAI PAS Sense analyzers use photoacoustic infrared technology to measure many of the most commonly measured IR-absorbing gases. Gas selectivity is achieved through the use of optical filters that provide both a means of detecting the gas of interest and compensating for interfering gases and water. Both bench-top and rack-mounted PAS configurations are available.
An optional carousel is available to accommodate up to five additional gases. Typical applications for CAI PAS analyzers include:
- Vehicle exhaust measurements for Ammonia, Ethanol, Nitrous Oxide, CO2, CO and H2O
- SHED testing for Methanol, Ethanol, Toluene, CO2, R-134-A and H2O
- Process quality control
- Stack gases
- VOC/THC analysis
- Fermentation/greenhouse gases
- Trace gas analysis
- Occupational health and safety
- Livestock emissions
Features
- Measures up to five gases plus water vapor
- Selectively measures a wide range of gases/vapors
- Linear response over a wide dynamic range
- Stable and Reliable: ensuring a maximum of only two calibrations a year
- User-friendly: easy calibration, configuration, and viewing/analyzing of data via PC
- Accurate: compensates for temperature and pressure fluctuations, water vapor interference, and interference from other known gases
- Extremely low-volume flushing possible
- Operates immediately: virtually no warm-up time necessary
- Remote control capability via TCP/IP network interface protocol
- Expandable up to 16 locations with the 700MPS Multipoint Sampler & Datalogger Software
- Rack mount
Specifications
| Zero Drift | Typically ± Detection limit per 3 months |
| Influence of temperature | +/- 10% of detection limit/°C |
| Influence of pressure | +/-0.5% of detection limit/mbar |
| Repeatability | 1% of measured value |
| Range Drift | +/- 2.5% of measured value per 3 months |
| Influence of temperature | +/- 0.3% of measured value/°C |
| CAI ENVEA Group has a policy of continuous improvement of its products and we reserve the right to update or modify specifications without notice. |
| -0.01% of measured value/mbar | |
| 60%. (Concentration of 100x detection limit used in determining these specs.) | |
| Influence of pressure | |
| Measured at 1013 mbar, and RH: 60% | |
| Measured at 20 °C and RH: 60% | |
| Detection limit is @5 s S.I.T. | |
| Automatically compensates for temp and pressure fluctuations in its analysis cell and | |
| Intereference | can compensate for water vapor in the air sample. If an optical filter is installed to measure |
| a known interferent, the 1312i can cross compensate for the interferent. | |
| Acoustic Sensitivity | Not influenced by external sound |
| Vibration Sensitivity | Strong vibrations at 20 Hz can affect the detection limit |
| Internal Data Storage Capacity | Total space available in Display Memory to store data is 131072 measurement cycles. If a measurement cycle takes 15 sec, then display Memory space will be sufficient for a 22-day monitoring task. |
| Dimensions: (HxWxD) | 6.9 x 19 x 14.8 in. (175 x 483 x 375 mm) |
| Weight: | 30.8 lbs (14 kg) |
| Communication: | Monitor uses 3 interfaces: USB, Ethernet, and RS232, for data exchange and remote control |
| of the 1512. Software communicates using USB, Ethernet, and RS232. | |
Product Data Sheet
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