Hidden thread, 4-hole screw fixing is more convenient
Good repeatability, low zero drift, fast response time, strong anti-interference
Power supply voltage: DC5-24V, output signal: V- high and low level output, switching value NPN
The shell is made of PC V0 fireproof material, which is safer and more stable
Overview:
Solid-state electrochemical sensing technology is a new technology in the field of electrochemical detection. This technology is based on electrochemical principles, using proton membranes instead of traditional electrolytes, outputting signals according to the electrochemical reactions of different gases, and accurately measuring gas concentrations through signal quantities.
Formaldehyde, with the chemical formula CH2O or HCHO, is a colorless gas with a strong pungent odor. Soluble in alcohol and ether. Acute formaldehyde poisoning is a systemic disease mainly caused by contact with high concentration formaldehyde vapor, which mainly damages the eyes and respiratory system. When its concentration reaches 0.08-0.09mg/m3 in every cubic meter of air, children will have slight asthma. When the indoor air reaches 0.1mg/m3, there will be peculiar smell and discomfort; when it reaches 0.5mg/m3, it can irritate the eyes and cause tears; when it reaches 0.6mg/m3, it can cause throat discomfort or pain. When the concentration is higher, it can cause nausea and vomiting, cough, chest tightness, asthma and even pulmonary edema; when it reaches 30mg/m3, it will cause death immediately.
Application range:
Detection of formaldehyde in commercial and civil fields.
Portable formaldehyde detection instrument.
Fixed point formaldehyde detector.
item name | specifications |
input voltage | DC 5V~24V |
load current | <100mA |
quiescent current | <10 mA |
detect gas | CH2O |
resolution | 0.01ppm |
repeatability | ＜2%output value |
threshold value | 0.06ppm |
max. load | 20ppm |
response time | (T90) ＜15S |
Zero output ，20°C) | -0.10ppm~0.02ppm |
sample mode | diffusion type |
output method | NPN/V |
working conditions
item name | specification | |
pressure range | 1±0. 1 standard atmospheric pressure | |
expected service life | 3 years (in the air) | |
storage temp. | + 10℃~ ﹢ 30℃ | |
work temp. | continuous operate | - 10℃~ ﹢ 50℃ |
discontinuous operation | - 10℃~ ﹢ 55℃ | |
working humidity | 15%RH~ 90%RH | |
stability | ＜2% signal value/month | |
physical properties
item name | specifications |
size | L*W*H = 30.35 * 47.4 * 47.4MM |
cable | 50cm (±10MM) (can be customed for bulk orders) |
shell material | black PC V0 fireproof |
safety certificate | CE |
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