Hach 911, Руководство пользователя

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Meter Installation
• Sample history logging.
4.6.1 Connecting the Sampler Cable to a 940 Flow Meter
Note: The sampler must be located in a non-hazardous location.
1. Connect the Optically Isolated Sampler Interface (Cat. No. 4274) between the 940
sampler receptacle and the samplers auxiliary receptacle.
2. Program the sampler for Special Output/Sample Output.
4.6.2 Connecting a Non-Sigma Sampler to a 940 Flow Meter
DANGER
Do not attempt to connect any sampler to the 940 Flow Meter without the use of the
Optically Isolated Sampler Interface (Cat. No. 4274). Failure to do so may result in
fire or explosion.
DANGER
Le raccordement d'un échantillonneur quelconque à un débitmètre 940 sans
utilisation de l'interface d'échantillonneur à isolation optique (No. Cat. 4274) annule
à la fois la garantie et l'agrément de sécurité intrinsèque du débitmètre, et peut
provoquer un incendie ou une explosion. Reportez-vous aux schémas de contrôle
de l'installation.
The Optically Isolated Sampler Interface can also be used with samplers produced by
other manufacturers. In many cases a non-Sigma sampler may be connected to the
Optically Isolated
Sampler Interface without any modifications or alterations
If a non-Sigma sampler is not compatible with the connector on the end of the sampler
interface cable it may be necessary to remove the existing cable from the sampler
interface and use the other manufacturer’s sampler cable.
Figure 21 Sampler Communications
1 Use “approved” seal to minimize passage of gases or
vapors from hazardous location to non-hazardous
location. 3 Sampler located in a non-hazardous location
2 Optically Isolated Sampler Interface (Cat. No. 4274) in a
non-hazardous location 4 940 Flow Meter in a hazardous location