欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: NDIR
廠商: International Light Technologies Inc.
英文描述: Visible/IR Lamps for NDIR Gas Sensors
中文描述: 可見光/紅外燈的非色散紅外氣體傳感器
文件頁數: 1/2頁
文件大小: 48K
代理商: NDIR
Gilway Technical Lamp
55 Commerce Way
Woburn, MA 01801
Tel: 781-935-4442
Fax: 781-938-5867
www.gilway.com
Visible/IR Lamps for
NDIR Gas Sensors
Gilway offers a line of Visible/IR lamps for use in
applications such as nondispersive infrared gas
sensors, analyzers, and monitors.
Nondispersive Infrared (NDIR) sensors are simple
spectroscopic devices often used for gas analysis.
The key components are an infrared source (lamp),
a sample chamber or light tube, a wavelength filter,
and an infrared detector. The gas is pumped or
diffuses into the sample chamber, and gas
concentration is measured electro-optically by its
absorption of a specific wavelength in the infrared
(IR).
The IR light is directed through the sample chamber
towards the detector. The detector has an optical
filter in front of it that eliminates all light except the
wavelength that the selected gas molecules can
absorb. Other gas molecules do not absorb light at
this wavelength, and do not affect the amount of
light reaching the detector. The IR signal from the
source is usually chopped or modulated so that
thermal background signals can be offset from the
desired signal.
For greater optical efficiency, a reflector assembly
can surround the lamp used for the NDIR sensor.
The reflector is usually parabolic in shape to
collimate the IR light through the sample chamber
towards the detector. The use of a reflector can
increase available light intensity by two to five
times. The reflector surface can also be gold-
coated to further enhance its efficiency in the
infrared.
The intensity of IR light that reaches the detector is
inversely related to the concentration of target gas
in the sample chamber. When the concentration in
the chamber is zero, the detector will receive the full
light intensity. As the concentration increases, the
intensity of IR light striking the detector decreases.
Beer’s Law describes the exact relationship
between IR light intensity and gas concentration:
Beer’s Law:
I = I
0
e
kP
where:
I =
I
0
= the measured intensity of an empty sample
chamber
k = a system dependent constant
P = the concentration of the gas to be measured
the intensity of light striking the detector
NDIR sensors can be used to measure practically
all inorganic and organic gases, but are most often
used for measuring carbon dioxide because no
other sensing method works as simply and reliably
for this gas. Calibration gases of specific
concentration are available for determining the
system constant k for any particular sensor design.
Applications for NDIR Gas Sensors
§
indoor air quality
§
cycle regulation in self-cleaning ovens
§
automotive and flue gas emissions
§
greenhouse farming
§
hazardous area warning signals
§
gas leak detection
§
landfill gas monitoring
§
alcohol breathalyzers
§
patient monitoring for anesthesiology
相關PDF資料
PDF描述
NFV10D221K VARISTOR
NFV10D241K VARISTOR
NFV10D271K VARISTOR
NFV10D301K VARISTOR
NFV10D330K VARISTOR
相關代理商/技術參數
參數描述
NDIR01H 功能描述:DIP 開關/ SIP 開關 SPST 0.025A 24VDC 1/2 Pitch RoHS:否 制造商:Omron Electronics 位置數量:10 開關類型:DIP 執行器:Rotary 端子節距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole
NDIR-01H-V 制造商:Diptronics Manufacturing Inc 功能描述:
NDIR01S 功能描述:DIP 開關/ SIP 開關 SPST 0.025A 24VDC 1/2 Pitch RoHS:否 制造商:Omron Electronics 位置數量:10 開關類型:DIP 執行器:Rotary 端子節距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole
NDIR-01S-V 制造商:Diptronics Manufacturing Inc 功能描述:
NDIR-02 STV 制造商:APEM 功能描述:
主站蜘蛛池模板: 中山市| 竹北市| 通海县| 陆丰市| 水城县| 广南县| 奉贤区| 安陆市| 兰考县| 凤翔县| 濉溪县| 巴林右旗| 宁晋县| 海口市| 泗洪县| 深圳市| 青冈县| 清新县| 伊金霍洛旗| 乐东| 南康市| 长武县| 平定县| 宜昌市| 曲松县| 翼城县| 大丰市| 凤翔县| 苗栗市| 彩票| 河北省| 徐州市| 达拉特旗| 霞浦县| 黄山市| 酉阳| 广汉市| 泌阳县| 安吉县| 清涧县| 海门市|