CO2 Sensor Company

AMT GmbH, Germany——CO₂sensor

Measure the dissolved carbon dioxide content (including HCO) in water^3-ａnd CO₃^2-）It is one of the important parameters for water quality monitoring. AMT, a German company, has developed an optical CO coated with a new type of film₂The sensor is equipped with a titanium alloy casing and other optimized components. CO₂The sensor can withstand voltage up to a depth of 1000 meters, with analog and digital outputs, low current intake, and internal temperature compensation functions. CO₂The sensor can be connected to the external interface of CTD, with a separate measurement system, and can be used as an independent sensor.

CO₂sensorMeasurement principle:

The sensor separates the sample from the internal volume through a gas permeable silicone membrane. Liquids and solids cannot pass through silicone membranes. When the sensor is immersed in the sample, CO can be achieved between the sensor volume and the sample₂Balanced voltage distribution. The internal sensor is an optical sensor, and its working principle is based on the single beam dual wavelength infrared analysis method. CO₂The measurement of carbon dioxide concentration is calculated by measuring the temperature in water and the pressure in air.

CO₂sensorCharacteristics:

-Submersible direct reading sensors for natural water, seawater, and industrial water

-In addition, CO can be detected when measuring pH₂And the total inorganic carbon content

-Silicates, phosphates, HCO^3-ａnd CO₃^2-No interference

-Internally stored calibration coefficients

-Pressure resistant depth of 1000 meters

-Power consumption less than 0.5W

-Digital output or analog output

-Internal temperature compensation

-Humidity compensation and other influencing factors

-The heated sensor head can avoid condensation

Compared with the M chemical method, optical carbon dioxide sensors have some significant advantages, and it was found that silicates, phosphates, HCO^3-And CO₃^2-No interference.

Comparison between M-method and optical carbon dioxide method

CO₂sensorTechnical Specifications:

carbon dioxide:

Carbon dioxide measurement range: 15 mg/l, 50 mg/l, 340 mg/l (others can be customized)

精度： 0...5 mg/l CO2: ± 0.06 mg/l

5... 15 mg/l CO2: ± 2% measured value

15... 50 mg/l CO2: ± 3.5% measured value

50...80 mg/l CO2: ± 1.5 mg/l CO2

80...340 mg/l CO2: ± 6 mg/l CO2

Size: 225mm in length, 33mm in diameter

Shell material: titanium alloy

Connector: Subconn MCBH4M

Power supply: When using digital or voltage output, the voltage is 12-30 V DC; When outputting current, the voltage is 20-30V DC

Power consumption:<0.5W

warm-up time＜12 seconds, * precise＜2 minutes

Voltage endurance depth:≤1,000 m/1,000 dbar

Output: 4... 20 mA, 0... 5 V DC or digital output RS485

Storage and measurement temperature range: 0... 60 ° C

Internal temperature compensation

Humidity compensation and other influencing factors