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MiCS-2710 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - NO2 Sensor - e2v

भाग संख्या MiCS-2710
समारोह NO2 Sensor
मैन्युफैक्चरर्स e2v 
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MiCS-2710 pdf
MEASUREMENT CIRCUIT
Fig. 2 shows the pin connections of the MiCS-2710 gas
sensor. A simple circuit to measure the pollution level is
proposed in Fig. 3. The heating voltage VH is applied to pins
3 and 1. A load resistor RL is connected in series with RS to
convert the resistance RS to a voltage VS between pins 2
and 4. RS can then be calculated by the following
expression:
RS = RL /(VCC - VS) x VS
32
RH RS
41
Pin Connection
1 Heater ground
2 Sensor pin
3 Heater power
4 Sensor pin
Fig. 2: Equivalent circuit of MiCS-2710 (top view)
Gas VCC
Sensor
32
32
VH 4411
RL
VS
GND
Fig. 3: Measurement circuit for pollution gas detection
ELECTRICAL SPECIFICATIONS
Maximum Ratings
Rating
Maximum sensor supply
voltage
Maximum heater power
dissipation
Maximum sensor power
dissipation
Relative humidity range
Ambient operating
temperature
Storage temperature range
Storage humidity range
Symbol
VCC
PH
PS
RH
Tamb
Tsto
RHsto
Value/
Range
2.5
50
1
5 95
-30 85
-40 120
5 95
Unit
V
mW
mW
%RH
°C
°C
%RH
Operating Conditions
Parameter
Heating power
Heating voltage
Heating current
Heating resistance
Symbol
PH
VH
IH
RH
Typ Min Max Unit
43 30 50 mW
1.7 - - V
26 -
- mA
66 59 73 Ω
Sensitivity Characteristics
Characteristic
Symbol Typ Min Max Unit
NO2 detection range
FS
0.05 5 ppm
Sensing resistance
in air (see note 1)
R0 2.2 0.8 8 kΩ
Sensitivity factor
(see note 2)
SR 55 6 100 -
Notes:
1. Sensing resistance in air (R0) is measured under
controlled ambient conditions, i.e. synthetic air at 23 ± 5
°C and <5 ± 5% RH.
2. Sensitivity factor (SR) is defined as RS at 0.25 ppm of
NO2 divided by RS in air. Test conditions are 23 ± 5 °C
and <5 ± 5% RH.
© e2v technologies (uk) limited 2008
Document subject to disclaimer on page 1
A1A-MiCS-2710 Version 2, page 2

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डाउनलोड[ MiCS-2710 Datasheet.PDF ]


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