The Vair-9001 SO2 Analyzer is the analyzer that measures the minimum amount of SO2 in air correctly using the UV fluorescence method. The UV lamp with a lower chance of sensitivity used for Vair-9001 was applied, and the self-manufactured kicker to remove the obstacle components such as HC was installed.
To prevent the adhesion of the specimen, the response chamber and specimen tube of special coating material were used to improve minimum detection and precision.
All gas analyzers of the Vasthi series were equipped with a screen interface design using a TFT-LCD and touch screen so that the user can operate the analyzer and maximize the visual image. The MCU applied to the analyzer is an ARM11 32-bit processor and operates based on Linux Kernel 2.6, which maximizes the system's stability due to multiprocessing.
In addition, the analyzer is equipped with an automatic zero correction system (Auto Zero) for smooth measurement and various interfaces (Ethernet, RS232, RS485, USB, DIO, and Analog Out) so that users can use it more conveniently and effectively. US EPA Reference Method: RFSA-1120-257
FEATURES :
- Measuring range: Ranges 0-0.1 / 0.5 / 1 ppm, user selectable.
- 7inch TFT LCD & touch screen interface.
- Ethernet, RS-232, RS-485 & USB ports.
- USB interface utilizes for System Program Update. Temperature & pressure compensation
- Internal zero(optional)
- Stored data can be retrieved RS-232, USB Interface and TCP/IP network
- In built Data Logger Utilizes NAND-Flash to Store up to 1year
| Measuring items | Sulfur Dioxide(S02) in ambient air |
| Measuring method | Ultraviolet fluorescent method (UVF) |
| Lower Detectable Limit | Less than 0.5ppb |
| Repeatability | within 1 % of span gas concentration |
| Zero drift | Less than 1 ppb |
| Span drift | within 1%/full scale (1 day) |
| Response time(95%) | Less than 120 seconds (T95) |
| Linearity | within 1%/full scale |
| Precision | within 1% of reading or 1 ppb |
| Ambient temperature | 5 - 40C |
| Analog output | 0-1 V / 0-5V or 4-20mA (option) |
| Sample flow rate | Stabilized flow control by 700cc/min Critical Orifice |
| Particulate filter | 47mm Teflon filter |
| Certified | US EPA |
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