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Application of sulfuryl fluoride fume vapor detector in inspection and quarantine

This site2017-04-07 16:53:09

Sulfuryl fluoride is widely used in the field of inspection and quarantine fumigation, commonly known as fumigation, is a typical gaseous fumigant.
The sulfuryl fluoride gas has the following characteristics:
(1) Strong diffusion and penetration ability;
The natural vapor pressure of liquid sulfuryl fluoride is very high, its vapor pressure at -5 ° C is 3 times higher than that of methyl bromide at 40 ° C, so it is easy to diffuse and penetrate.

Its permeability is 5-9 times higher than that of olfactory methane.
(2) It is very easy to desorb and volatilize, that is, the medicament adsorbed on the fumigant is diffused by ventilation, and it is relatively easy to remove, and relatively poisonous

The least), generally fumigation, it is difficult to detect the agent after 8-12 hours of exhaust gas dispersion.
(3) Does not affect seed germination and color of fumigated items, has low toxicity to plants, and does not affect fumigated wheat, rice, broad beans, rapeseed, etc.

Sprout rate. As it does not affect the color of the smoked article, it can be used for fumigation and insecticide on textiles, clothes, cultural history files and books. (4)

Sulfonyl fluoride has a very low boiling point (-55. 2 ° C), is easy to gasify, and is very convenient to use even in the cold season in the north.
(5) Sulfonyl fluoride has a high residual in high-protein and ester-containing substances, so it has not yet been allowed to be used for fumigation of food and food.
(6) Although sulfuryl fluoride is moderately toxic to higher animals, it is still very toxic to humans. Wear a gas mask during operation.

When you have a heart or other symptoms, you should immediately leave the fumigation place and breathe fresh air; if breathing stops, perform artificial respiration and seek medical treatment promptly

. Can be treated with phenobarbital sodium and thiopental sodium, and pay attention to prevent brain edema and protect the liver and kidney.
Sulfonyl fluoride has a fumigation effect on pests, and poisons death by affecting the central nervous system. To a variety of warehouse pests

, Valley Elephant, Rice Elephant, Bean Elephant, Valley Goblin, Tobacco Cicada, Mexican Bean Ladybug, Little Goblin, Wood Goblin, Various Skin Goblin, Winged Moth

Wait,
More than 20 kinds of pest control during storage and quarantine and pest control for import and export. Can also be used for disinfection of seedlings, seeds, wood preservation and textiles, craftsmanship,

Fumigation of bamboo and wooden utensils, cultural relics archives, books, papers, specimens, ancient buildings, etc.
The sulfuryl fluoride product is 98% or 99% of the original drug and is packed in a steel bottle.
Sulfuryl fluoride is mainly used in closed fumigation. The medicine contained in the steel bottle is sprayed by the pressure generated by the ferret after opening.

Product description of sulfuryl fluoride gas detector:
Online sulfuryl fluoride gas detector, suitable for real-time and accurate detection of sulfuryl fluoride gas concentration and leakage in various environments, using imported electrochemical transmission

Sensor and microcontroller technology. Fast response speed, high measurement accuracy, good stability and repeatability. Explosion-proof wiring method is suitable for various

Dangerous places, and compatible with various control alarms, PLC, DCS and other control systems, can realize on-site alarm early warning, 4-20mA standard signal

No. output, relay switch output; perfect display of various technical indicators and gas concentration values; also has a variety of strong circuit protection functions,

Effectively prevent various human factors, instrument damage caused by uncontrollable factors;

Product features of sulfuryl fluoride gas detector:
★ Imported electrochemical sensors have good anti-interference performance, and the service life is up to 3 years;
★ Using advanced microprocessor technology, fast response speed, high measurement accuracy, good stability and repeatability;
★ The detection site has on-site sound and light alarm function, and the gas concentration exceeds the standard for real-time alarm.
★ Large screen LCD display with backlight on site, visual display of gas concentration / type / unit / working status, etc .;
★ Independent air chamber, the sensor is easy to replace, no field calibration is required for replacement, and the key parameters of the sensor are automatically identified;
★ Full-range temperature digital automatic tracking compensation to ensure measurement accuracy;
★ Semiconductor nano-process ultra-low power 32-bit micro processor;
Full software automatic calibration, sensor calibration function with up to 6 levels of target points to ensure accuracy and linearity of measurement, and data recovery function;
With over-voltage protection, lightning protection, short circuit protection, reverse connection protection, anti-static interference, anti-magnetic field interference and other functions;
And it has an automatic recovery function to prevent damage to the instrument caused by external reasons, man-made reasons, natural disasters, etc .;
Full Chinese / English operation menu, simple and practical, with temperature compensation function;
PPM,% VOL, mg / m3 can be switched freely;
★ Automatic protection function against high concentration gas impact;

model:

SK-600-CO2F2-A

Detection gas:

Sulfuryl fluoride in the air

scope of test:

0-100ppm, 500ppm, 1000ppm, 5000ppm, 0-100% LEL

Resolution:

0.1ppm, 0.1% LEL

Display method:

LCD

Temperature and humidity:

Optional accessories, temperature detection range: -40 to 120 ° C, humidity detection range: 0-100% RH

Detection method:

Diffusion type, flow type, pumping type are available

Installation method:

Wall-mounted, ducted

Detection accuracy:

≤ ± 3%

Linearity error:

≤ ± 1%

Response time:

≤20 seconds (T90)

Zero drift:

≤ ± 1% (FS / year)

Recovery Time:

≤20 seconds

Repeatability:

≤ ± 1%

Signal output:

① 4-20mA signal: standard 16-bit precision 4-20mA output chip, transmission distance 1Km
② RS485 signal: using standard MODBUS RTU protocol, transmission distance 2Km
③ Voltage signal: 0-5V, 0-10V output, can be set by yourself
④ Pulse signal: also known as frequency signal, adjustable frequency range (optional)
⑤ On-off signal: Standard 2 groups of relays, optional third group of relays, passive contacts of the relay, capacity 220VAC 3A / 24VDC 3A

transfer method:

① Cable transmission: 3-core, 4-core cable, long distance transmission (1-2 km)
GPRS传输:可内置GPRS模块,实时远程传输数据,不受距离限制(选配) GPRS transmission: can be built-in GPRS module, real-time remote transmission of data without distance limitation (optional)

Receiving equipment:

User computer, control alarm, PLC, DCS, etc.

Alarm method:

On-site sound and light alarm, external alarm, remote controller alarm, computer data acquisition software alarm, etc.

Alarm system:

Standard configuration of two-level alarm, optional three-level alarm; alarm modes can be set: conventional high and low alarm, interval control alarm

Electrical interface:

3/4 ″ NPT female thread, 1/2 ″ NPT female thread, support 2 electrical connection methods at the same time

Explosion-proof mark:

ExdII CT6 (Explosion-proof type)

Housing material:

Die-cast aluminum + sandblasted oxidation / fluorocarbon paint, explosion-proof and anti-corrosion

Protection level:

IP66

Operating temperature:

-30 ~ 60 ℃

Working power:

24VDC (12 ~ 30VDC)

Working humidity:

≤95% RH, no condensation

size and weight:

183 × 143 × 107mm (L × W × H) 1.5Kg (net weight of the instrument)

Working pressure:

0 ~ 100Kpa

Standard accessories:

Manual, certificate of conformity

Warranty:

One year



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