Panametrics DigitalFlow GC868, Руководство для стартапов

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Chapter 1. Installation
1-1 DigitalFlow™ GC868 Startup Guide (1 and 2-Channel)
1.1 Introduction
To ensure safe and reliable operation of the Model GC868 Clamp-on Gas Flowmeter,
the system must be installed in accordance with the guidelines established by
Panametrics. Those guidelines, which are explained in detail in this chapter, include
the following specific topics:
• Unpacking the Model GC868 system
• Selecting a suitable site for the electronics console and the clamping
fixture/transducers
• Installing the clamping fixture, transducers and damping material
• Installing temperature and pressure transmitters
• Installing the electronics console
• Wiring the electronics console.
1.2 Unpacking
Carefully remove the electronics console, the transducers, the clamping fixture, the
preamplifier, and the cables from the shipping containers. Before discarding any of
the packing materials, account for all components and documentation listed on the
packing slip. The discarding of an important item along with the packing materials is
all too common. If anything is missing or damaged, contact the factory immediately
for assistance.
1.3 Site
Considerations
Because the relative physical locations of the clamping fixture and the Model GC868
electronics console are important, use the guidelines given in this section to plan the
Model GC868 system installation.
1.3.1 Electronics
Console Location
The standard Model GC868 electronics enclosure is a Type-4X weather-resistant,
dust-tight, indoor/outdoor type. Typically, the electronics console is mounted in a
meter shed. When choosing a mounting site, make sure that the location permits
easy access to the console for programming, testing, and servicing.
Note:
For compliance with the European Union’s Low Voltage Directive (73/23/EEC),
this unit requires an external power disconnect device such as a switch or
circuit breaker. The disconnect device must be marked as such, clearly
visible, directly accessible, and located within 1.8 m (6 ft) of the Model
GC868.
1.3.2 Installation
Location
The pipe location must accommodate the clamping fixture, the flowmeter
transducers and any pressure and/or temperature transducers employed as part of
the flowmeter system. Ideally, choose a section of straight run pipe with unlimited
access; for example, a long stretch of pipe that is above ground. However, if you are
dealing with an underground pipe, dig a pit around the pipe to facilitate installation
of the flowmeter equipment.
WARNING!
The Model GC868 flowmeter can measure the flow rate
of many gases, some of which are potentially
hazardous. The importance of proper safety practices
cannot be overemphasized.
Be sure to follow all applicable local safety codes and
regulations for installing electrical equipment and
working with hazardous gases or flow conditions.
Consult company safety personnel or local safety
authorities to verify the safety of any procedure or
practice.
ATTENTION EUROPEAN CUSTOMERS! In order to meet CE Mark
requirements, all wiring connections must be made in accordance
with the instructions in Appendix A, CE Mark Compliance.