Gastec 124 便携式气体检测管苯乙烯检测管 C6H5CH：CH2 (10-1500 ppm)

Name: Gastec 124 便携式气体检测管苯乙烯检测管 C6H5CH：CH2 (10-1500 ppm)
Brand: Gastec

制造商Gastec(查看更多该品牌的产品)

Model124

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Indicator: 20 to 500 ppm
Measuring Range:
+ 10 to 20 ppm, Number of Pump Strokes 2
+ 20 to 500 ppm, Number of Pump Strokes 1
+ 500 to 1500 ppm, Number of Pump Strokes 1/2
Sampling Time: 30 seconds per pump stroke
Colour Change: White → Yellow
Reaction Principle: C6H5CH:CH2+ H2S2O7 → Condensation Polymer
Coefficient of Variation: 15% (for 20 to 100 ppm), 10% (for 100 to 500 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Catalog

Manual

Manual tube

Performance

Measuring Range

10 to 20 ppm

20 to 500 ppm

500 to 1500 ppm

Number of Pump Strokes

1/2

Correction Factor

1/2

Sampling Time

30 seconds per pump stroke

Detecting Limit

1 ppm (n=2)

Colour Change

White → Yellow

Reaction Principle

C6H5CH:CH2+ H2S2O7 → Condensation Polymer

Coefficient of Variation

15% (for 20 to 100 ppm), 10% (for 100 to 500 ppm)

Shelf Life

3 Years

Corrections for temperature & humidity

Unnecessary

Store the tubes at cool and dark place.

Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change colour by itself to

Alcohols	≧ 0.5%	+ (Bleaching)	No
Esters	≧ 0.5%	+ (Bleaching)	No
Ketones	≧ 0.5%	+ (Bleaching)	No

Calibration gas generation

Diffusion tube method

TLV-TWA	TLV-STEL	Explosive range
20 ppm	40 ppm	1.1 to 6.1%

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