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High Sensitivity Stable Performance Electrochemical Gas Sensor Transmitter for Nitrogen dioxide/Toxic gas

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High Sensitivity Stable Performance Electrochemical Gas Sensor Transmitter for Nitrogen dioxide/Toxic gas

Name: High Sensitivity Stable Performance Electrochemical Gas Sensor Transmitter for Nitrogen dioxide/Toxic gas
Brand: Chengdu Westsensor Technology Co., Ltd.
Rating: 4.3 (37 reviews)

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Model No. :	7 Series
Brand Name :	CWST

9yrs

Chengdu, Sichuan, China

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Chengdu Westsensor Technology Co., Ltd.

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Product description

Specifications nominal range:0~20ppm

Maximum overload:200ppm

High sensitivity

Stable performance

Linear signal out

Performance Characteristics

MEASUREMENT

Nominal Range

0-20 ppm

Maximum Overload

200 ppm

Expected Operating Life

Two years in air

Output Signal

1.40 ± 0.30 µA/ppm

Resolution

0.1 ppm

Temperature Range

-20°C to +50°C

Pressure Range

Atmospheric ± 10%

Pressure Coefficient

No data

T90 Response Time

< 40 seconds

Relative Humidity Range

3-5 VDC, 3.3 V to utilise EEPROM calibration

Typical Baseline Range

-0.1 to 0.1 ppm equivalent

(pure air)

Maximum Zero Shift

0.2 ppm equivalent

(+20°C to +40°C)

Long Term Output Drift

<2% signal loss/month

Recommended Load

33 ohms

Resistor

Bias Voltage

Not required

Repeatability

2% of signal

Output Linearity

Linear

Physical Characteristics

Weight

17 g

Position Sensitivity

None

Storage Life

Six months in CTL container

Recommended Storage temp

0-20°C

Warranty Period

12 months from date of despatch

IMPORTANT NOTE: Connection should be made via PCB sockets only. Soldering to the pins will render your warranty void.
CiTiceLs may response to certain gases in a sample other than the target gas.7NDHCiTiceLs have been tested with an umber of commonly cross-interfering gases and the results are given below.The table shows the typical response to be expected from a sensor when exposed to a given test gas concentration(relevant to safety, e.g.TLV levels)

Gas	Conc.	7NDH	Gas	Conc.	7NDH



Carbon monoxide:	300ppm	0ppm	Hydrogen:	100ppm	0ppm
Hydrogen sulphide:	15ppm	-1.5≤ x ≤0ppm	Hydrogen cyanide:	10ppm	0ppm
Sulphur dioxide:	5ppm	-0.05 ≤x ≤0ppm	Hydrogen chloride:	5ppm	0ppm
Nitric oxide:	35ppm	0ppm	Ethylene:	100ppm	0ppm	it
Chlorine:	1ppm	≈1ppm	Ethylene:	100ppm	0ppm