The special optical structure of photoacoustic spectroscopy and the special calculation process in signal acquisition and processing enable this method to efficiently collect weak photoacoustic signals and effectively eliminate background signal interference. It is very suitable for trace gas concentration detection and interference free detection in complex environments.
Schulz SPTr GAS ® Tracer isPortable photoacoustic spectroscopy trace gas analyzerIntegrate all functional modules into a 1/2 19 "chassis, equipped with a touch display control screen, a reasonably distributed menu structure, and an intuitive and friendly operating interface. All status displays, threshold values, and alarm values are provided in analog and digital form. Real time display of detection concentration curves, fully automatic or manual zero calibration, can be freely selected by customers. The detection accuracy is high, the stability is good, and it is suitable for various trace gas concentration detection occasions.
Photoacoustic spectroscopy is a new spectroscopic technology based on the photoacoustic effect, which is different from traditional infrared spectroscopy technology. It effectively converts light signals into sound signals and calculates the final gas concentration through the detection of sound signals by precision microphones. Due to the special optical structure of photoacoustic spectroscopy technology and the special calculation process in signal acquisition and processing, this method can efficiently collect weak photoacoustic signals and effectively eliminate the interference of background signals. It is very suitable for trace gas concentration detection and interference free detection in complex environments.
Portable photoacoustic spectroscopy trace detectionApplication direction:
▪ Industrial online monitoring (semiconductor, power, chemical, metallurgical, etc.)
▪ Environmental pollution detection
▪ On site inspection and troubleshooting
▪ Exhaust gas detection
▪ Gas process control
▪ Air pollution detection
▪ TOC detection in water
▪ Blast furnace gas detection
▪ Garbage incineration and landfill
▪ Tunnel gas detection
Advantages of portable photoacoustic spectroscopy trace detection products
Effectively shielding against humidity interference in the detection environment: The infrared humidity detection module is directly configured inside the photoacoustic module.
Shielding interference caused by unstable temperature: The photoacoustic spectrum is heated to 50 degrees and maintained at this temperature for detection.
Shielding other gas interference: By detecting weak photoacoustic signals, amplifying and calculating gas concentration through precise signal amplification
Internally integrated air pump and three automatic control valves for sampling points
Analyzer configuration internal activated carbon filter
Install replaceable dust filters on sampling tubes near each detection point
According to different types of gases, the zero point can be automatically calibrated with air
technical indicators
| Product Model | SPTr-GAS®300 Tracer |
| 通道 | Refer to the analyzer nameplate or factory inspection report for channel configuration. The channel configuration information includes: -Measure gas type -Measurement range -Measurement error |
| response time | Cycle time:<20s |
| warm-up time | Approximately 30 minutes (depending on different detector configurations) |
| resolution | Usually: 0.1 g/m3 varies depending on the detection range |
| Operation method | Touch screen, 5.6 "LCD |
| analog output | 4mA~20mA (during normal operation) 2mA (during preheating or status alarm) |
| Allow load resistance | 250Ω~350Ω |
| Alarm contact output | Equipment status alarm Measurement channel upper/lower limit alarm Note: When the measured value is greater than the upper limit alarm value or less than the lower limit alarm value, the relay will close due to electric shock. All relays are isolated from each other and from internal circuits. |
| Relay characteristics | 1A contact (250V AC/2A, resistive load) |
| communication | Serial port output RS232 (7-pin connector blue/black cable) |
| Working Voltage | (198~242)V AC, 50/60 Hz |
| power interface | EN60320 C1 |
| fuse | Rated current: 3A, Blow characteristic: Fast Acting Size: 5mm x 20mm |
| Shell protection level | IP42 (EN60529) |
| weight | 约15 Kg (typical) |
Gas detection range category:
| gas | Detection range | linear error | precision | Background gas |
| NH3 | Ammonia | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| NH3 | Ammonia | 0…1 g/m3 | 0.1% FS | 0.1% FS | Air or N2 |
| C5H10 | Cyclopentane | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C3H6O | Acetone | 0…2000ppm | 0.1% FS | 0.1% FS | Air or N2 |
| C2H6O | Ethyl Alcohol | 0…2000ppm | 0.1% FS | 0.1% FS | Air or N2 |
| C3H8O | Isopropyl Alcohol | 0…1000ppm | 0.1% FS | 0.1% FS | Air or N2 |
| CH4O | Methyl Alcohol | 0…500ppm | 0.1% FS | 0.1% FS | Air or N2 |
| NF3 | Cyclopentane | 0…20ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| N2O | Nitrous Oxide | 0…500ppm | 0.1% FS | 0.1% FS | Air or N2 |
| C2Cl4 | PERC | 0…800ppm | 0.1% FS | 0.1% FS | Air or N2 |
| SO2F2 | ProFume® | 0…1 g/m3 0…1000ppm 1…150 g/m3 | 0.1% FS | 0.1% FS | Air or N2 |
| CCl3F | R11 | 0…500ppm | 0.1% FS | 0.1% FS | Air or N2 |
| C2Cl3F3 | R113 | 0…50ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C2F6 | R116 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| CCl2F2 | R12 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C2HCl3F2 | R122 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C2HCl2F3 | R123 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| CClF3 | R13 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| CF4 | R14 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| CHClF2 | R22 | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| CHF3 | R23 | 0…150ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C8H8 | Styrene | 0…50ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| SO2 | Sulfur dioxide | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| SO2 | Sulfur dioxide | 0…1000ppm | 0.1% FS | 0.1% FS | SF6 |
| C8H20O4Si | TEOS | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C2HCl3F2 | Toluene | 0…100ppm | 0.5ppm / 0.1% FS | 0.1ppm / 0.1% FS | Air or N2 |
| C2HCl3 | TRI | 0…1000ppm | 0.1% FS | 0.1% FS | Air or N2 |
| CH3Br | Methyl Bromide | 0…2 g/m3 | 0.1% FS | 0.1% FS | N2 (only) |
| For other gas please contact us for more information. |