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Drager Short Term Water Vapour Detection Tubes

PRODUCT CODE:
702795-01

Drager Short Term Detection Tubes for Water Vapour, used with the Drager Accuro Gas Detection Pump (or the Drager X-act 5000 for the 3/a) for short-term measurement of water vapour through a colour change reaction. Available in 0.1/a (mg/L), 1/b (mg/L) and 3/a (lbs/MMcF) variants, supplied in packs of 10 with a 2 year shelf life.

These tubes are designed for spot-measurements and must be used with the Drager Accuro Gas Detection Pump. Buy now from Frontline Safety.

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£97.81
Final product price inc VAT

Product description

The Drager Short Term Detection Tubes for Water Vapour are used for the short-term measurement of water vapour concentration. The tubes use a reaction between water vapour and magnesium perchlorate that produces a colour change from yellow to blue or turquoise-blue. The 0.1/a and 1/b are used with the Drager Accuro Gas Detection Pump, while the 3/a is compatible with either the Accuro pump or the Drager X-act 5000.

This bundle is available in three variants with different measurement units and ranges. The 0.1/a measures 0.1 to 1.0 mg/L. The 1/b measures 1 to 40 mg/L (dual range). The 3/a measures 3 to 60 lbs/MMcF (pounds per million cubic feet), the US gas industry unit for moisture content in natural gas.

All three variants are supplied in packs of 10 with a 2 year shelf life. See the spec table for detailed measurement conditions for the 0.1/a and 1/b.

Image is for illustration only.

Specification

Measuring Range
  • 0.1/a: 0.1 to 1.0 mg/L (first scale mark = 0.05 mg H2O/L)
  • 1/b: 1 to 18 mg/L (2 strokes) or 20 to 40 mg/L (1 stroke, dual range)
  • 3/a: 3 to 60 lbs/MMcF

Number of Strokes
  • 0.1/a: 3
  • 1/b: 1 (high range) or 2 (low range)

Time for Measurement
  • 0.1/a: approx. 1.5 minutes
  • 1/b: approx. 20 seconds (high range) or 40 seconds (low range)

Standard Deviation

± 15 to 20%

Colour Change

Yellow to blue (0.1/a) / Yellow to turquoise-blue (1/b)

Reaction Principle

H2O + Mg(ClO4)2 → blue / turquoise-blue reaction product

Ambient Temperature

0 to 30°C (0.1/a) / 0 to 50°C (1/b)

Humidity Notes (1/b)

Up to 100% RH. Condensation in the tube causes measurement errors. For RH above 80%, the tube temperature should be at least 5°C higher than ambient. For RH below 80%, the tube temperature should be at least equal to ambient.

Cross Sensitivity
  • 0.1/a: Basic substances cause plus errors; acidic substances cause minus errors. No interference from 1200 ppm nitrogen dioxide, 6000 ppm sulphur dioxide, 2000 ppm ethanol or 2000 ppm acetone
  • 1/b: Acid gases cause plus errors; basic gases cause minus errors

Pack Size

10 tubes

Shelf Life

2 years
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