Gastec 91TP 检测甲醛气体管HCHO(0.01 - 1.75 ppm)

Indicator: 0.03 - 0.50 ppm 
Calibration Range: 0.01 - 0.50 ppm 
Measuring Range: 0.01 - 1.75 ppm 
Sampling (flow) Rate: 100mL/min , 50mL/min
Sampling Volume: 1000mL , 500mL
Sampling Time: 10 min
Colour Change: Yellow → Pale orange
Nr. of tests: 10
Automatic Gas Sampler: GSP-300FT-2

Detail

Catalog

Specifications
Calibration Range (0.01) - 0.50 ppm
Measuring range 0.01 - 1.75 ppm
Sampling (flow) Rate 100mL/min , 50mL/min
Sampling Volume 1000mL , 500mL
Sampling Time 10min
Detecting Limit 0.005ppm (1000mL)
Colour Change Yellow → Pale orange
Corrections for temperature/humidity Temperature correction is necessary
Shelf life 1 year (in the refrigerator)
Accuracy CV=5-10%
(CV: Coefficient of variation = σ: standard deviation / mean value x 100)
Possibly coexisting substances and their interferences (NOTE)
Substance(s) Interference Colour change by itself
Acetaldehyde   + Pale orange
Acetone   + Pale orange
Ethanol 0.15% Yellow
Xylene 50ppm No No
Ammonia 1ppm Yellow
Nitrogen dioxide 1ppm No No
Calibration gas generation Permeation tube method
 
TLV-TWA TLV-STEL Explosive range
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C0.3ppm(2014)

7.0 - 73%

 

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