measuring method
The QL3580I condensate total organic carbon detector TOC adopts advanced measurement methods, and the specific steps are as follows:
1. The water sample enters the reactor and reacts with acid, at which point the inorganic carbon in the water sample is converted into carbon dioxide;
2. Using non carbon dioxide air (instrument air) as the carrier gas, the inorganic carbon is converted into carbon dioxide and discharged. At this time, the total inorganic carbon (TIC) can be detected by an NDIR detector;
3. Then oxidize the water sample with TIC (total inorganic carbon) removed;
After oxidation is completed, the organic carbon is converted into carbon dioxide and discharged through a carrier gas, and the total organic carbon (TOC) content is detected by an NDIR detector.
Instrument characteristics
The QL3580I condensate total organic carbon analyzer adopts UV persulfate oxidation method, which is suitable for industrial condensate total organic carbon detection and provides stable analysis results
The QL3580I condensate total organic carbon detector adopts a 4mm inner diameter injection pipeline, which can pass through soft particles with an inner diameter of up to 2mm. Conventional samples do not need to be filtered, greatly improving the convenience of sample processing
The QL3580I condensate total organic carbon analyzer is equipped with two-point automatic calibration function to reduce additional maintenance for operators. The instrument also uses sequential batch measurement to reduce reagent consumption
The analysis process of QL3580I condensate total organic carbon analyzer does not use alkaline reagents, effectively reducing the difficulty for operators to prepare reagents and eliminating measurement interference caused by the dissolution of carbon dioxide into alkaline reagents, while ensuring the accuracy of measurement results
QL3580I condensate total organic carbon detector has low maintenance capacity and low maintenance cost
The QL3580I condensate total organic carbon analyzer has a more user-friendly human-machine interface: equipped with a high-definition touch screen, it has a user-friendly operation interface and instrument interface, which can quickly and conveniently download data and update software. The multi-level management mode is convenient for users to manage the instrument
The QL3580I condensate total organic carbon detector has a smaller volume and provides a more flexible installation method. It can be used in explosion-proof environments with explosion-proof cabinets or used separately, saving more installation space.
TECHNICAL INDEX
Measurement parameters: TOC (NPOC)/TIC
Oxidation method: UV persulfate oxidation
Measurement method: After oxidation of the water sample, the carbon dioxide concentration is detected using an NDIR detector
Measurement range: 0-25~0-100 mg C/L (automatic range switching)
Zui low detection limit: 0.5 mg C/L
Repeatability: TOC: ± 0.5 mg C/L or ± 2% of the reading (whichever is greater); TIC: ± 4% of reading
Accuracy: ± 0.5 mg C/L or ± 3% of the reading (whichever is greater)
Zero drift: within ± 2% f.s/day
Range drift: within ± 2% f.s/day
Analysis time: 7 minutes (TOC)

Measurement interval: adjustable (in minutes)

Interference: Possible turbidity, fat, oil, protein, and tar may interfere with the measurement results
Injection requirement flow rate: ≥ 100 mL/min
Particle size: ≤ 2 mm, soft particles
Injection pressure: ≤ 1 bar
Instrument air for removing carbon dioxide from carrier gas:
Source pressure: 50~120PSIG
Dew point: -20 ℃ (excluding water vapor and oil and gas)
Instrument gas consumption flow rate: maximum 1.7 L/min
Water sample temperature: 5 ℃ -45 ℃
Maintenance cycle: once every 3 months
Protection level: IP44
Signal output: 0/4~20 mA, Modbus/RTU RS485
Relay output: 2 relays (24V 4A dry contacts)
Display screen: 7-inch, 800 × 480 pixel (4:3) TFT-LCD touch screen
Data storage: 9999 analysis data and 99 fault information
Power supply: 220 VAC, 50/60Hz
Size: 750 × 500 × 320 mm
Weight: 55 Kg