
找到相关文章约80篇,用时1.27秒
80‹‹1234››在畜禽养殖过程中,因舍内畜禽的密度过大,呼吸过程产生的二氧化碳(CO2)严重超标。二氧化碳因由家畜呼吸排出,而且比重大,所以在畜舍下部、畜体周围的浓度较高。
植物对CO2 是有饱和度的,当 CO2 浓度过高的时候,气孔会关闭一部分,这样就影响 了光合作用就像是光呼吸一样。大气中的二氧化碳浓度通常在 0.03%左右。作物进行光合作 用合成有机物时,二氧化碳是主要的碳源,因此增加大棚内二氧化碳浓度可加速蔬菜的生长。
- CO2 Control for Indoor Air Quality - CO2 Measuring for Ventilation Control - CO2 Control for Building, Hospital, School - CO2 Control for Air cleaner, Air conditioner. - Mushroom Control, Boiler..
carbon dioxide sensor - co2 sensor - 2010-11-02 17:40:42
Measuring Type:Non-Dispersive Infrared (NDIR) Measuring Range:0 ~ 3000ppm or 0 ~ 5000ppm Accuracy:±2% ppm (0~3000ppm) @10 ~ 50℃ Response Time:0 ~ 80% < 30sec Signal Update:Every 2.0 Seconds Warm..
carbon dioxide sensor - co2 sensor - 2010-11-02 17:37:26
Application of CO2 sensor Module - CO2 Control for Indoor Air Quality - CO2 Measuring for Ventilation Control - CO2 Control for Building, Hospital, School - CO2 Control for Air cleaner, Ai..
carbon dioxide sensor - co2 sensor - 2010-11-02 17:29:31
Power Supply: DC12V or 24V Range: 1,2,3,5 m Operating temperature: 0 ~ 50 ℃ Storage temperature: - 40 ℃ ~ 85 ℃ Blind Area: ≤ 300mm Output: ①, Voltage: 1 ~ 5V ②, current: 4 ~ 20mA ③, ..
ultrasonic location detector - admin - 2010-11-01 10:02:06
Operating Voltage: DC 12V/24V (determined when ordering, explosion-proof products only DC 12V operating voltage, 15 m required to DC24V) ● signal output: ① Voltage: 0 ~ 5V or 1 ~ 5V ② Current: 0 ~ 20m..
ultrasonic location detector - admin - 2010-11-01 09:27:50
Non-contact measurement,environmentalprotection, safety, convenience. Split design, elegant appearance, convenient TO installation.
ultrasonic location detector - admin - 2010-11-01 09:16:25
we are manufacturer of co2 transmitters, we make all kinds of co2 transmitter which used in agricultural , HVAC and IAQ .
carbon dioxide transmitter - admin - 2010-06-02 21:59:26
1) 精度高:2%FS ;寿命长 2) 输入电压:24V,供电电流150mA。最大200mA熔断保护。 3) 输出信号:4-20Ma 4) 测量范围: 0-100%(可选10%.30%) 5) 响应时间:10s 6) 非扩散红外原理检测。
固态电解质 品牌:日本费加罗FIGARO 产品型号:TGS4161二氧化碳传感器TGS4161典型应用: 二氧化碳传感器TGS4161主要用于农业大棚CO2二氧化碳浓度检测,室内空气质量监控等
Detection Principle: Electrochemical Detection Method: Diffusion(SampleDrawAvailable,Nema4X) Detection Range: 0-1ppm Resolution: 0.001 ppm Output Signal: Linear,<3%(accuracy)
gas transducer/detector - admin - 2010-04-14 21:22:53
LongLife-over2yearscontinuousoperation ofgas intheworkenvironment(continuousgasexposurereducesservicelife)* StaysAwake-doesnotgotosleepwhengasisabsentforlongperiodsoftime* ChemicallySelective
OEM gas module - admin - 2010-04-08 15:10:13
* no false alarms - does not react with changes in temperature/humidity/pressure
OEM gas module - admin - 2010-04-08 14:56:19
Duct mounted Temperature and humidity transmitter ,RS485 output,support standard Modbus agreement and dual 4 ~ 20 mA linear current output transmitter(4~20mA and RS485 output)
temp&humidity transducer - admin - 2010-04-08 14:41:49
Adopt Imported electrochemical or catalytic combustion gas sensor, has the advantage of stable performance, high accuracy and good linearity, strong anti-jamming and long life.
gas transducer/detector - admin - 2010-04-08 14:06:51
Smart transmitter MIC-O2 ,which adopt the most advanced and international standards VLSI technology,proprietary digital simulation of hybrid technology designed gas intelligent transmitter
gas transducer/detector - admin - 2010-04-08 13:40:46
The low price,high-resolution DigitalTemperature and Humidity Transmitter
temp&humidity transducer - admin - 2010-04-08 13:15:22
Medium-range ultrasonic level transmitter
ultrasonic level sensor - admin - 2010-03-31 14:20:46