SAMPLE GAS DEHUMIDIFIER DH6 Manual, Rev. 10/2020
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The cooler/dryer DH6 (mounted at the point of sample) and the 24VDC/40W power supply are
connected with an electric cable. The maximal length of this cable may be 10 meters. An FEP
tubing 3x5 mm (optional Swagelok) is leading the sample gas from the DH6 to the ozone analys-
er (also available are fittings for 4x6 mm FEP tubing, and Swagelok 6 mm or ¼"). The dehumidi-
fied sample gas now will not form any condensate inside the sample tubing.
An optional Dirt Trap DT 100 can be provided in the tubing line for safety, and to watch the
sample gas after passage through the sample gas cooler/dryer.
2
Cautions & Warnings
The
exclamation point
within an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance (servicing) in-
structions in the literature accompanying the instrument.
Warning:
Ozone is a highly toxic gas. The ozone concentrations fed through the SAMPLE GAS
DEHUMIDIFIER DH6 might be above the lethal limit. Appropriate safety devices (ozone mon-
itors) should be used.
Warning:
Before opening the sample gas connections make sure that the sample line does not
contain ozone gas, and is not under pressure.
Caution
: Before opening the lid of the electronics, the user should ground himself by touching
grounded points in order to prevent damage of the electronics by electrostatic discharge.
Précautions:
Avertissement
: L’ozone est un gaz à forte toxicité. Les concentrations d’ozone passant par le refroidisseur
/sécheur DH6 peuvent aller au-delà de la limite mortelle. C’est pourquoi
il convient d’utiliser une technique de sécurité adéquate (détecteur d’ozone).
Avertissement
: Avant d’ouvrir le circuit gaz, assurez-vous qu’il n’y a
pas de surpression dans la conduite du gaz à mesurer et qu’il n’y a pas
d’ozone dans le gaz.
Attention
: Avant d’enlever le couvercle du compartiment électronique,
reliez-vous à la terre en touchant une surface conductrice reliée à la terre
afin d'éviter d'endommager l’électronique par une décharge électrostatique.
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Installation
The DH6 removes water vapor from the sample gas. This re-
duction of the water vapor dew point obviously has to be per-
formed at the point of sample (e.g. on top of a reaction vessel,
or on a large diameter off-gas tube) to avoid condensate build-
up in the sample gas tubing leading from the sample point to
e.g. a photometric analyser. This patented principle allows for
