sunBachelor of Science and TechnologyRKI FP-31 formaldehyde detector

FP-31The photoelectric photometric formaldehyde analyzer is a product specially customized by Riken Instrument Co., Ltd. in Japan for the detection of formaldehyde in indoor air in China, fully meeting the national standards of the People's Republic of ChinaGB9663General hygiene requirements for public places: "Method for determination of formaldehyde in public places". RIKENFP-31The technical indicators of the formaldehyde detector fully meet the formaldehyde limit values in public places and air quality hygiene indicators(0.1mg/m3)The requirements.

RIKENFP-31Detection principle of formaldehyde analyzer:

The concentration of formaldehyde in indoor air is measured using the photoelectric photometry method. When formaldehyde gas passes through the detection unit, the paper soaked in a coloring agent in the detection unit changes color from white to yellow due to a chemical reaction. The change in reflected light intensity caused by the degree of discoloration is a function of formaldehyde concentration. Measure the concentration of formaldehyde based on the rate of change in reflected light intensity. Wait for the instrument to reach the test paper reaction time to read the value.

Measurement range and error:

Measurement range:0.02mg/m3-1.25mg/m3In BCO、CO2, C andNH3use1ug/gRelative error when concentration coexists with formaldehyde<5%

RIKENFP-31Product features of formaldehyde detector:

1Simply install the testing pills for easy detection

2Formaldehyde display unitmg/m3

3Automatic storage function with measurement data attached(99group)And can be downloaded toPCmachine

4No preheating time required

5Automatic backlit display

6The formaldehyde determination steps required by the national standard:

Read the value when the instrument reaches the reaction time of the test paper

interval10minRepeat once, repeat in total3Next time. Take the arithmetic mean of all data

Record on-site temperature, atmospheric pressure, and relative humidity

The air inlet of the instrument should be away from the front breathing zone of the human body1rice

7The concentration unit is cost-effective:

8Regarding the conversion relationship between the measured value of quality score and mass concentration:Cp=(C′×30.03×T0)/[B×(273+t)]

In the formula:

Cp——Formaldehyde mass concentration,mg/m3;

C'- Quality score measurement value, μg/g;

B——Under standard conditions0℃，101.3kPaMolar volume of gas,B=22.4L/moL);

T0——Standard state temperature,273K;

T——On site temperature, ℃.

RIKENRKI FP-31Formaldehyde detector configuration:

Testing test pieceTAB(20a flat/wrap)

Portable package

alkaline battery

operating manual

certificate of conformity