Hach 911, User Manual

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Section 4 Meter Installation
DANGER
Only qualified personnel should conduct the tasks described in this section of the
manual.
DANGER
Seul un technicien qualifié peut effectuer les tâches d'installation décrites dans
cette section du manuel.
This section describes the
ONLY
approved installation instructions for the 911 and 940
Flow Meters. This section also describes battery installation and interface wiring for a
RS232, Modem, and Sampler connection.
4.1 Approved 911 and 940 Installation Drawings
DANGER
Any installation or flow meter configuration not specifically detailed on the
following control drawings is not allowed. In all cases, the local authority having
jurisdiction shall have a final say.
DANGER
Il est interdit de procéder à toute installation ou configuration d'un débitmètre qui
n'est pas explicitement détaillée dans les schémas de contrôle de l'installation
ci-dessous. Dans tous les cas, c'est l'autorité locale responsable qui aura le
dernier mot.
Figure 1 on page 16 through Figure 13 on page 28 are approved control drawings. These
certified drawings detail the
ONLY
approved method of installing the 911 and 940 Flow
Meters. Additionally, these drawings list both part number, description, and the only
certified sensors, probes, and associated equipment to be used with these meters. Any
substitutions automatically void the Intrinsically Safe certification of the flow meter and
could result in fire or explosion.