MQ-7
MQ-7

MQ-7

Mã SP: 160220
MQ-7 FEATURES * High sensitivity to carbon monoxide * Stable and long life APPLICATION They are used in gas detecting equipment for carbon monoxide(CO) in family and industry or car. SPECIFICATIONS A. Standard work condition Symbol Parameter name Technical condition Remark Vc circuit voltage 5V±0.1 Ac or Dc VH (H) Heating voltage (high) 5V±0.1 Ac or Dc VH (L) Heating voltage (low)...
40.000₫
Số lượng Đơn giá
1-19 40000
20-99 32000
100+ 25000

Miễn phí vận chuyển HỖ TRỢ PHÍ VẬN CHUYỂN

  • - Nội thành Hà Nội: Đơn hàng trên 500.000 đ (Tối đa 20,000đ)
  • - Toàn quốc: Đơn hàng trên 1.000.000đ (Tối đa 50,000đ))
  • Giao hàng tận nơi và
    nhanh chóng bởi Viettel Post.
  • Thu tiền tại nhà, đảm bảo
    an toàn.
  • Đổi trả hàng trong 3 ngày,
    thủ tục đơn giản.

MQ-7

FEATURES
* High sensitivity to carbon monoxide
* Stable and long life
APPLICATION
They are used in gas detecting equipment for carbon monoxide(CO) in family and
industry or car.
SPECIFICATIONS
A. Standard work condition
Symbol Parameter name Technical condition Remark
Vc circuit voltage 5V±0.1 Ac or Dc
VH (H) Heating voltage (high) 5V±0.1 Ac or Dc
VH (L) Heating voltage (low) 1.4V±0.1 Ac or Dc
RL Load resistance Can adjust
RH Heating resistance 33Ω±5% Room temperature
TH (H) Heating time (high) 60±1 seconds
TH (L) Heating time (low) 90±1 seconds
PH Heating consumption About 350mW
b. Environment conditions

Symbol Parameters Technical conditions Remark
Tao Using temperature -20℃-50℃
Tas Storage temperature -20℃-50℃ Advice using scope
RH Relative humidity Less than 95%RH
O2 Oxygen concentration 21%(stand condition)
the oxygen concentration can
affect the sensitivity
characteristic
Minimum value is over 2%
c. Sensitivity characteristic

symbol Parameters Technical parameters Remark
Rs Surface resistance
Of sensitive body

2-20k
In 100ppm
Carbon Monoxide
а(300/100ppm) Concentration slope rate Less than 0.5 Rs (300ppm)/Rs(100ppm)
Standard working Temperature -20℃±2℃ relative humidity 65%±5% RL:10KΩ±5%
condition
Vc:5V±0.1V VH:5V±0.1V VH:1.4V±0.1V
Preheat time No less than 48 hours Detecting range:
20ppm-2000ppm carbon monoxide

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