TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook DG-TT7-K, Руководство по эксплуатации

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MULTIXPLO AND MULTITOX DETECTORS
OPERATING MANUAL
2 NOSP17665
Revision 02a
1.2 DG-TX7-X
Detectors are calibrated on 100% LEL (Lower Explosive Limit) of a particular-gas or vapour.
The DG-TX7-X is a MultiXplo detector based on a thermo-catalytic oxidation transducer, which
requires oxygen to function properly.
In the event of a long period without oxygen, the measurement will no longer be representative
of the concentration of gases or vapours.
The characteristics of the device can also be altered by the presence of certain catalyst poisons
such as silicone fumes, vapours of organometallic compounds and, to some extent by
halogenated compounds.
1.3 DG-TT7-K
The DG-TT7-K is a MultiTox detector, based on catharometric transducer. Its measurement range
is usually expressed in terms of %vol. relative to a particular-gas (for example 5%vol. H
2
, 5%vol.
He...).
The DG-TT7-K measurement principle is based on the heat exchange between a heated filament
and a "cold" separation. The effectiveness of the exchange between those two elements depends
of the value of the thermal conductivity of the mixture which separate them.
This measurement principle is very stable, and able to operate with high gas concentrations.
In this configuration, the presence of oxygen is not essential, and catalytic poisoning is not an
issue.
1.4 Technical specifications
Each detector is constructed as follows:
•
A wall-mounted support secured by three screws and including cable gland (M20)
(optional). There are 2 standard entries and an optional one.
•
A stainless-steel explosion-proof housing containing:
-
A set of tropicalized electronic cards
-
A display and infrared communication electronic card allowing the
communication with the remote control (TLU600)
•
A colour coded cartridge, yellow for combustible gas detectors (DG-TX7-X) and brown
for catharometers (DG-TT7-K), located in the lower part of the detector.