Gastec 4H Quick-measuring Detector tubesHydrogen sulphide H2S (10-4000ppm)

Name: Gastec 4H Quick-measuring Detector tubesHydrogen sulphide H2S (10-4000ppm)
Brand: Gastec

ຜູ້ຜະລິດGastec(ເບິ່ງສິນຄ້າອື່ນໆຂອງຍີ່ຫໍ້ນີ້)

Model4H

ຕິດຕໍ່

ຈຳນວນ

ການຊຳລະເງິນທີ່ປອດໄພ

ການຮັບປະກັນຄຸນນະພາບ

ປ່ຽນ ແລະ ສົ່ງຄືນງ່າຍ

ມີບໍລິການຈັດສົ່ງ

Indicator: 100 to 2000 ppm
Measuring Range:
+ 10 ~ 100 ppm, Number of Pump Strokes 2 to 10
+ 100 ~ 2000 ppm, Number of Pump Strokes 1
+ 2000 ~ 4000 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: White → Brown
Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
Coefficient of Variation: 5% (for 100 to 2000 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Catalog

Manual

Manual tubes

Performance

Measuring Range

10 to 100 ppm

100 to 2000 ppm

2000 to 4000 ppm

Number of Pump Strokes

2 to 10

1/2

Correction Factor

1/2 to 1/10

Sampling Time

45 seconds per pump stroke

Detecting Limit

2 ppm (n=10)

Colour Change

White → Brown

Reaction Principle

H2S + Pb(CH3COO)2 → PbS + 2CH3COOH

Coefficient of Variation

5% (for 100 to 2000 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

Ammonia		No	No
Carbon monoxide, Carbon dioxide		No	No
sulphur dioxide	1/1	+	No
Mercaptans		No	No
Organic substance		No	No
Nitrogen dioxide	1/4		No

Calibration gas generation

Permeation tube method

TLV-TWA	TLV-STEL	Explosive range
1 ppm	5 ppm	4.0 to 44%

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